:root{color-scheme:dark;--bg:#031126;--shell:#020f22;--sidebar:#04142a;--panel:#061b38;--panel2:#091c3a;--soft:#0c2347;--text:#f7faff;--muted:#a7b9dc;--line:#133b74;--line2:#133057;--blue:#00b6fb;--deepblue:#0868ff;--purple:#a100f0;--green:#04de9d;--amber:#ffbf2e;--red:#ff4c77;--card-gradient:linear-gradient(125deg,#02162f,#0e2148);--head-gradient:linear-gradient(103deg,#09205c 0%,#0c2870 45%,#5319b3 100%);--brand-gradient:linear-gradient(110deg,#00b6ff,#2571ff 48%,#a300f5);--shadow:0 12px 25px rgba(0,0,0,.08)}
html[data-theme="light"]{color-scheme:light;--bg:#eaf2ff;--shell:#eff5ff;--sidebar:#f8faff;--panel:#fff;--panel2:#f5f9ff;--soft:#eaf2fd;--text:#142746;--muted:#516788;--line:#c5d9f6;--line2:#d7e4f7;--card-gradient:linear-gradient(125deg,#fff,#f3f7ff);--head-gradient:linear-gradient(105deg,#e9edff,#d9eaff 55%,#f0e0ff);--shadow:0 8px 24px rgba(53,90,170,.08)}
html[data-accent="purple"]{--brand-gradient:linear-gradient(115deg,#576bff,#9837ee,#e138ed);--blue:#8263ff}html[data-accent="green"]{--brand-gradient:linear-gradient(115deg,#00b8de,#03c895,#529bff);--blue:#00bbab}html[data-accent="orange"]{--brand-gradient:linear-gradient(115deg,#ec8b22,#ff6b70,#9e41df);--blue:#f59d2c}html[data-accent="pink"]{--brand-gradient:linear-gradient(115deg,#fc34a0,#8f42fa,#148dfd);--blue:#ec39ad}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.48 Inter,'Segoe UI',system-ui,-apple-system,sans-serif;min-height:100vh}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}button:disabled{opacity:.52;cursor:not-allowed}h1,h2,h3,h4,p{margin-top:0}h1{line-height:1.15}h2{font-size:20px}h3{font-size:17px}p{color:var(--muted)}small{font-size:12px}.ico{display:inline-block;vertical-align:middle;flex-shrink:0}svg{vertical-align:middle}[hidden]{display:none!important}button,input,select,textarea{outline-offset:3px}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,a:focus-visible{outline:2px solid var(--blue)}.app-shell{display:flex;min-height:100vh;max-width:2050px;margin:auto;box-shadow:0 0 60px rgba(0,0,0,.05)}.sidebar{width:256px;min-width:256px;background:linear-gradient(160deg,var(--sidebar) 50%,var(--bg));border-right:1px solid var(--line2);height:100vh;position:sticky;top:0;display:flex;flex-direction:column;z-index:50}.brand{height:91px;padding:18px 19px;display:flex;align-items:center;gap:15px;white-space:nowrap;border-bottom:1px solid var(--line2)}.brand-mark,.heading-icon,.metric-icon,.promo-cup,.pick-icon{display:grid;place-items:center;background:var(--brand-gradient);color:#fff;box-shadow:0 9px 20px rgba(0,70,200,.24)}.brand-mark{width:65px;height:65px;min-width:65px;border-radius:13px}.brand strong{display:block;font-size:23px;letter-spacing:-.8px;line-height:1.1}.brand em,.mobile-brand em{font-style:normal;color:#00bdfc}.brand small{display:block;color:#06d8ff;font-size:9.4px;font-weight:750;letter-spacing:.15px;margin-top:8px}.side-nav{padding:24px 13px;display:flex;flex-direction:column;gap:7px;flex:1;overflow:auto;scrollbar-width:thin}.side-link{display:flex;align-items:center;gap:24px;padding:14px 20px;height:56px;border-radius:11px;font-size:16px;color:var(--muted);transition:.17s ease;white-space:nowrap}.side-link .ico{color:#99ccff}.side-link:hover{background:var(--soft);color:var(--text)}.side-link.active{background:var(--brand-gradient);color:white!important;box-shadow:0 6px 17px rgba(55,62,250,.31)}.side-link.active .ico{color:#fff}.sidebar-promo{min-height:155px;margin:12px 14px 19px;background:linear-gradient(130deg,#042453,#130a42 75%,#420d7e);border:1px solid #5147fb;border-radius:15px;position:relative;overflow:hidden;padding:24px 15px;display:flex;align-items:flex-start;gap:16px;isolation:isolate}.promo-cup{width:63px;height:63px;min-width:63px;border-radius:14px}.sidebar-promo strong{font-size:15px;line-height:1.55}.sidebar-promo small{display:block;margin-top:7px;color:#b9b8ff}.wave{position:absolute;bottom:-47px;left:-35px;width:270px;height:120px;border-radius:50%;border-top:10px solid #00aaff;transform:rotate(13deg);filter:drop-shadow(0 0 9px #5c35ff);z-index:-1}.wave:after{content:'';position:absolute;inset:15px 0 0;border-top:11px solid #763dff;border-radius:50%}.shell-main{flex:1;min-width:0;overflow:hidden}.topbar{height:90px;border-bottom:1px solid var(--line2);display:flex;align-items:center;justify-content:space-between;gap:14px;padding:0 24px;background:linear-gradient(95deg,var(--bg),var(--shell),rgba(75,9,130,.2))}.top-title{font-weight:800;font-size:23px;min-width:190px}.mobile-menu,.mobile-brand{display:none!important}.search-box{background:linear-gradient(110deg,rgba(11,94,184,.35),rgba(21,64,136,.3));border:1px solid var(--line);border-radius:28px;display:flex;align-items:center;gap:14px;padding:0 17px;height:50px;max-width:560px;flex:1;color:#9dc8fa}.search-box input{background:transparent;border:0;outline:0;color:var(--text);min-width:0;width:100%;font-size:14px}.search-box input::placeholder{color:var(--muted)}.search-box kbd{white-space:nowrap;background:var(--soft);border:1px solid var(--line2);border-radius:6px;color:var(--muted);padding:3px 7px;font:12px monospace}.top-actions{display:flex;align-items:center;gap:16px}.icon-btn,.theme-button{border:0;background:transparent;color:#a3ccff;display:grid;place-items:center;flex-shrink:0}.theme-button{color:#ffd329;filter:drop-shadow(0 0 8px #edb317);padding:10px}.notify-btn{position:relative;padding:8px}.notify-btn b{position:absolute;right:5px;top:4px;width:10px;height:10px;border-radius:50%;background:#ff3171;box-shadow:0 0 0 4px rgba(255,49,113,.12)}.streak{padding:10px 14px;color:#ffd34d;background:rgba(255,151,22,.08);border:1px solid rgba(235,170,60,.12);border-radius:13px;white-space:nowrap;display:flex;align-items:center;gap:7px;font-size:13px}.streak svg{color:#ff973b}.profile-short{display:flex;align-items:center;gap:12px;white-space:nowrap;font-size:14px}.profile-short>b,.avatar-circle{display:grid;place-items:center;width:45px;height:45px;border-radius:50%;background:linear-gradient(135deg,#00acfd,#1162fd 75%,#7844ff);font-size:21px;color:white}.profile-short .ico{color:#30d6ff}.page{padding:15px 17px 24px;max-width:1700px;margin:0 auto}.panel{background:var(--card-gradient);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.page-heading{background:var(--head-gradient);padding:15px 18px;display:flex;align-items:center;gap:18px;min-height:99px;margin-bottom:15px}.heading-icon{width:70px;height:70px;min-width:70px;border-radius:14px}.heading-copy{flex:1;min-width:0}.heading-copy h1{margin:0 0 4px;font-size:28px;font-weight:750}.heading-copy p{margin:0;color:var(--text);opacity:.84;font-size:14px}.heading-extra{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.heading-extra label{display:flex;align-items:center;gap:8px;font-size:13px}.heading-extra select,.page-heading select,.typing-settings select,.setting-row select{background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:9px;padding:10px 12px;max-width:200px}.gradient-button,.ghost-button,.outline-button{display:inline-flex;align-items:center;justify-content:center;gap:12px;border-radius:11px;border:1px solid transparent;padding:12px 22px;font-weight:650;font-size:15px;min-height:46px;transition:transform .15s,filter .15s;text-align:center}.gradient-button:hover,.ghost-button:hover,.outline-button:hover{filter:brightness(1.13);transform:translateY(-1px)}.gradient-button{background:var(--brand-gradient);color:#fff;box-shadow:0 6px 19px rgba(65,70,252,.22)}.ghost-button,.outline-button{background:rgba(8,34,80,.34);color:var(--text);border-color:var(--line)}.slim{min-height:42px;padding:8px 17px}.full-button{width:100%}.section-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:13px}.section-head h2,.section-head h3{margin:0;display:flex;align-items:center;gap:11px;font-weight:700}.section-head h2 .ico,.section-head h3 .ico{color:var(--blue)}.section-head a,.section-head button,.link-button{color:#17d6ff;background:transparent;border:0;font-size:13px;display:inline-flex;align-items:center;gap:5px;white-space:nowrap}.section-head p{margin:6px 0 0;font-size:13px}.soft-paragraph{font-size:14px;line-height:1.8}.empty-text{color:var(--muted);padding:22px 10px;text-align:center}.small-note{color:var(--muted);font-size:12px}.green-text{color:var(--green)!important}.red-text{color:var(--red)!important}.cyan-text{color:#11d9ff!important}.level-pill,.tag{color:#0fffad;background:#003b3f;border:1px solid #08645c;border-radius:20px;padding:5px 12px;display:inline-block;font-size:12px;font-weight:600}
/* DASHBOARD */
.hero{height:291px;position:relative;overflow:hidden;background:radial-gradient(ellipse at 70% 60%,#072a8e 0%,transparent 49%),linear-gradient(115deg,#021734 14%,#02132e 58%,#180a62 100%);border-color:#1778f8;border-radius:21px;margin-bottom:13px;isolation:isolate}.hero:after{content:"";position:absolute;right:-30px;bottom:-108px;width:530px;height:215px;border-top:4px solid #663fff;border-radius:50%;filter:drop-shadow(0 0 16px #8944f8);z-index:-1}.hero-text{padding:31px 35px;width:49%;position:relative;z-index:3}.hero-eyebrow{display:block;font-size:10px;color:#86ceff;letter-spacing:3px;font-weight:700;margin-bottom:11px}.hero h1{font-size:48px;font-weight:850;letter-spacing:-1.8px;line-height:1.05;margin-bottom:11px;color:#fff}.hero h1 span{color:#16b7ff}.hero p{font-size:16px;max-width:480px;margin-bottom:17px;color:#bfd0e8}.hero-buttons{display:flex;gap:14px;flex-wrap:wrap}.hero-art{position:absolute;inset:-4px 10% 0 36%;background:url('../img/dashboard-keys.webp') center/contain no-repeat;filter:contrast(1.1) saturate(1.25);opacity:.89;z-index:0}.hero-quote{position:absolute;right:32px;top:42px;font-family:cursive;font-style:italic;font-size:30px;line-height:1.65;transform:rotate(-10deg);text-align:right;color:#b3a3ff;text-shadow:0 0 13px #333dff;max-width:240px}.summary-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px;margin-bottom:13px}.metric{min-height:113px;display:flex;align-items:center;padding:16px 18px;gap:17px;overflow:hidden}.metric-icon{width:62px;height:62px;min-width:62px;border-radius:12px;background:linear-gradient(150deg,#083b88,#005ce1);color:#4cb9ff}.metric-icon.green{color:#04f6a4;background:linear-gradient(130deg,#004334,#006654)}.metric-icon.purple{color:#da4aff;background:linear-gradient(130deg,#2b095f,#420da0)}.metric-icon.amber{color:#ffba36;background:linear-gradient(130deg,#52300f,#89510a)}.metric-icon.red{color:#ff4667;background:linear-gradient(130deg,#511b37,#82213b)}.metric-label{display:block;color:var(--muted);font-size:13px;white-space:nowrap}.metric strong{display:block;font-size:25px;font-weight:800;line-height:1.36;white-space:nowrap}.metric small{display:block;color:var(--muted);line-height:1.25}.dashboard-panels{display:grid;grid-template-columns:1.1fr 1fr .93fr;gap:13px;margin-bottom:13px}.dashboard-panels>.panel,.dashboard-side>.panel{padding:15px 17px}.dashboard-side{display:grid;grid-template-rows:1fr auto;gap:13px}.next-lesson{display:flex;gap:17px;min-height:160px}.lesson-art{width:130px;min-width:130px;border-radius:14px;background:radial-gradient(circle at center,#227ce2,#0b075e 70%);display:grid;place-items:center;border:1px solid #2f55cb;box-shadow:inset 0 0 35px #073c9d}.lesson-art span{font-size:55px;font-weight:800;color:#90eeff;transform:rotate(-10deg);text-shadow:0 0 22px #00a9ff}.next-lesson small{color:var(--blue)}.next-lesson h3{margin:3px 0 8px;font-size:17px}.next-lesson p{font-size:12px;margin:7px 0}.result-row{display:flex;align-items:center;gap:12px;background:var(--soft);padding:10px;border:1px solid var(--line2);border-radius:10px;margin:8px 0;min-height:67px}.result-dot{display:grid;place-items:center;width:46px;height:46px;min-width:46px;border-radius:50%;background:linear-gradient(140deg,#104af2,#5f21a0);color:white;font-size:19px;font-weight:800}.result-details{flex:1;min-width:0}.result-details strong{font-size:14px;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.result-details small{color:var(--muted);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.result-numbers{text-align:right;white-space:nowrap}.result-numbers b{color:#00cfff;display:block;font-size:14px}.result-numbers small{color:var(--green)}.bar-chart{height:126px;display:flex;align-items:flex-end;gap:11px;padding:7px 0 0}.bar-item{height:100%;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:7px}.bar-item .bar{min-width:16px;width:100%;border-radius:4px 4px 0 0;background:linear-gradient(0deg,#2472f3,#12b7ff);box-shadow:0 0 8px rgba(0,172,255,.25)}.bar-item:nth-child(2n) .bar{background:linear-gradient(0deg,#2046f7,#8b3af6)}.bar-item small{color:var(--muted)}.goal-panel{min-height:90px}.goal-panel strong{display:flex;align-items:center;gap:10px}.goal-panel strong .ico{color:var(--blue)}.goal-panel>span{display:block;color:var(--muted);font-size:12px;margin:5px 0}.progress-bar{height:12px;background:#172955;border-radius:12px;overflow:hidden;flex:1}.progress-bar i{display:block;height:100%;background:var(--brand-gradient);border-radius:12px;transition:width .25s}.trust-strip{display:flex;justify-content:space-around;align-items:center;padding:13px;gap:15px}.trust-strip span{display:flex;align-items:center;gap:13px;font-size:13px}.trust-strip .ico{color:var(--blue)}
/* WORKSPACES */
.workspace-columns{display:grid;grid-template-columns:minmax(0,1fr) 334px;gap:15px;align-items:start}.workspace-columns>div{min-width:0}.right-rail{display:flex;flex-direction:column;gap:13px;min-width:0}.rail-box{padding:16px 17px}.rail-box h3{display:flex;align-items:center;gap:10px;font-size:16px;margin:0 0 14px}.rail-box h3>.ico{color:#7cbaff}.rail-box .result-row{border:none;background:transparent;padding:8px 0;border-bottom:1px solid var(--line2);border-radius:0}.rail-box .result-dot{width:40px;height:40px;min-width:40px;font-size:17px}.rail-box .result-details strong{font-size:12px}.rail-box .result-numbers b{font-size:12px}.typing-workspace{display:block;min-width:0}.typing-metrics,.lesson-summary{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin-bottom:14px}.typing-metrics .metric,.lesson-summary .metric{min-height:91px;padding:12px;gap:12px}.typing-metrics .metric-icon,.lesson-summary .metric-icon{width:54px;height:54px;min-width:54px}.typing-metrics .metric-icon .ico{width:31px;height:31px}.typing-metrics .metric strong,.lesson-summary .metric strong{font-size:24px}.typing-metrics .metric-label,.lesson-summary .metric-label{font-size:12px}.typing-zone{position:relative;padding:12px;margin-bottom:0;border-color:#0759a2;background:linear-gradient(150deg,#01132c,#041b3b)}html[data-theme="light"] .typing-zone{background:#f3f8ff}.passage{padding:19px 21px;color:#bfcdf0;line-height:1.68;font:24px/1.7 'Consolas','Courier New',monospace;letter-spacing:3px;min-height:160px;max-height:209px;overflow:auto;border:1px solid var(--line2);border-radius:12px;background:rgba(2,13,33,.35);white-space:pre-wrap;word-break:break-word}.typing-zone .passage{padding-right:47px}.passage .correct{color:#00ffa4;background:rgba(0,220,128,.23)}.passage .wrong{color:#fff;background:#ef285a}.passage .current{background:#047f66;color:#a9ffde;border-left:2px solid #00dcaa;animation:caretPulse 1.3s infinite}.passage .upcoming{color:#aebfdf}.passage-refresh{position:absolute;right:30px;top:30px;background:transparent;border:0;color:#93bff6}.typing-input{display:block;width:100%;min-height:56px;resize:vertical;background:rgba(8,28,61,.72);color:var(--text);border:1px solid var(--line);border-radius:9px;margin-top:10px;padding:11px 14px;font-family:monospace;font-size:17px;line-height:1.4}.typing-input:disabled{opacity:.62}.typing-hint{font-size:11px;color:var(--muted);padding:5px 3px 0}.keyboard{border:1px solid #0c3a70;border-radius:0 0 12px 12px;background:#051a34;padding:10px 10px 11px;display:flex;flex-direction:column;gap:6px;user-select:none}html[data-theme="light"] .keyboard{background:#dceafa}.key-row{display:flex;gap:6px;height:39px}.key{display:flex;flex:1;align-items:center;justify-content:center;background:linear-gradient(150deg,#24405e,#172945);border-radius:6px;color:#f1f6fe;font-size:14px;border:1px solid rgba(119,175,248,.07);box-shadow:0 2px 2px rgba(0,0,0,.11);min-width:0}.key.wide{flex:1.4}.key.space{flex:5}.key.home-left{background:linear-gradient(135deg,#007ce3,#0c54bb);border-color:#067ffb}.key.home-right{background:linear-gradient(135deg,#008d57,#057b28);border-color:#06b66a}.key.pressed{filter:brightness(1.8);transform:translateY(1px);box-shadow:0 0 10px #47b7ff}.typing-footer{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:13px 6px 9px;background:rgba(6,19,40,.52)}.typing-footer .start-button{width:40%;max-width:425px;min-height:59px;font-size:18px;white-space:nowrap}.typing-footer .outline-button{padding:12px 11px;font-size:13px}.typing-settings{margin:0 0 14px;padding:15px;display:flex;gap:15px;flex-wrap:wrap}.typing-settings label{display:flex;align-items:center;gap:11px}.typing-settings select{min-width:110px}.test-finish{margin-top:15px;padding:23px;text-align:center}.test-finish .finish-icon{color:#ffd44c}.test-finish h2{font-size:25px;margin:9px 0}.test-finish .inline-actions{justify-content:center}.finish-stats{display:flex;gap:16px;justify-content:center;margin:13px auto 20px;flex-wrap:wrap}.finish-stats span{background:var(--soft);padding:10px 15px;border-radius:8px}.inline-actions{display:flex;gap:12px;flex-wrap:wrap}.live-stats{background:var(--bg);padding:14px;border-radius:12px;display:flex;flex-direction:column;gap:18px}.live-stats>div{display:flex;justify-content:space-between;align-items:center}.live-stats b{font-size:24px}.tab-buttons{display:flex;gap:9px;margin:0 0 14px;min-width:0}.tab-buttons button{display:flex;align-items:center;justify-content:center;gap:8px;flex:1;white-space:nowrap;padding:14px 10px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);font-size:13px}.tab-buttons button.selected,.period-tabs button.selected{background:var(--brand-gradient);color:#fff;border-color:transparent;box-shadow:0 5px 15px rgba(32,67,250,.28)}.pick-list{display:flex;flex-direction:column;gap:6px}.pick-row{display:flex;align-items:center;gap:11px;background:rgba(20,40,86,.32);border:1px solid var(--line2);border-radius:11px;padding:9px;color:var(--text);text-align:left;width:100%}.pick-row:hover{border-color:var(--blue)}.pick-row.active{background:var(--brand-gradient);border-color:transparent;color:#fff}.pick-row .pick-icon{height:44px;width:44px;min-width:44px;border-radius:11px}.pick-row>span:nth-child(2){flex:1}.pick-row strong,.pick-row small{display:block}.pick-row strong{font-weight:500;font-size:13px}.pick-row small{font-size:12px;color:var(--muted)}.pick-row.active small{color:#e3eaff}.info-list{display:flex;flex-direction:column;gap:0}.info-list div{display:flex;justify-content:space-between;gap:14px;border-bottom:1px solid var(--line2);padding:11px 0;font-size:13px}.info-list div:last-child{border-bottom:0}.info-list b{color:#0de4ef;text-align:right}.custom-panel{padding:15px;margin-bottom:14px}.custom-panel textarea{width:100%;margin-top:8px;min-height:80px;resize:vertical;padding:10px;border:1px solid var(--line);border-radius:7px;background:var(--bg);color:var(--text)}.lesson-summary{grid-template-columns:repeat(4,minmax(0,1fr))}.lesson-summary .metric{min-height:92px}.lesson-summary .metric strong{font-size:19px;white-space:normal}.lesson-list{max-height:680px;overflow:auto;scrollbar-width:thin}.lesson-list-row{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line2);padding:11px 8px;color:var(--text)}.lesson-list-row.active{background:var(--brand-gradient);border-radius:10px}.lesson-list-row.locked{opacity:.62;cursor:not-allowed}.lesson-number{width:42px;height:42px;border-radius:50%;background:#1c3b8b;color:white;display:grid;place-items:center;min-width:42px;font-size:20px}.lesson-list-row.active .lesson-number{background:#00b0fb}.lesson-name{flex:1;min-width:0}.lesson-name strong{display:block;font-size:14px;font-weight:600}.lesson-name small{color:var(--muted);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson-list-row.active small{color:#e4eaff}
/* PROGRESS */
.progress-summary .metric{padding:13px;min-height:109px}.chart-panel{padding:17px 20px;margin:0 0 13px;min-height:310px}.segmented{background:var(--bg);border:1px solid var(--line);padding:3px;border-radius:11px;display:inline-flex;gap:3px;align-items:center}.segmented button{background:transparent;color:var(--text);border:none;border-radius:9px;padding:7px 15px;font-size:12px}.segmented button.active{background:var(--brand-gradient);color:white}.line-chart{height:223px;position:relative;margin:6px 0}.line-chart svg{width:100%;height:196px;overflow:visible}.grid-lines path{stroke:var(--line2);stroke-width:1;stroke-dasharray:6 4}.chart-labels{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);padding-left:45px}.progress-bottom{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.performance-line{display:flex;align-items:center;gap:9px;padding:9px 0;font-size:12px}.performance-line span{width:108px}.performance-line .progress-bar{height:16px}.performance-line b{white-space:nowrap;color:#12d2fe}.donut{margin:15px auto 4px;width:168px;height:168px;border-radius:50%;background:conic-gradient(#00d98d calc(var(--percent)*1%),#233e73 0);display:grid;place-items:center}.donut>div{height:135px;width:135px;border-radius:50%;background:var(--panel);display:flex;flex-direction:column;align-items:center;justify-content:center}.donut b{font-size:26px}.donut small{max-width:90px;text-align:center;color:var(--muted)}.cal-weekdays,.cal-days{display:grid;grid-template-columns:repeat(7,1fr);gap:5px;text-align:center}.cal-weekdays{color:var(--muted);font-size:11px;margin-bottom:7px}.cal-days span{height:33px;display:grid;place-items:center;border-radius:50%;background:rgba(19,40,84,.6);font-size:12px}.cal-days span:empty{background:transparent}.cal-days span.practiced{background:#0b9d6a;color:white}.cal-days span.today{background:#008ffb;color:white;box-shadow:0 0 0 2px #c5efff inset}.calendar-key{display:flex;justify-content:center;gap:15px;color:var(--muted);font-size:11px;margin-top:15px}.calendar-key span:first-child{color:var(--green)}.calendar-key span:last-child{color:var(--blue)}.achieve-mini{display:flex;justify-content:space-around;gap:7px}.achieve-mini>span{text-align:center;font-size:32px}.achieve-mini small{display:block;font-size:10px;color:var(--muted);max-width:68px}.achievement-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.badge-card{padding:25px;text-align:center}.badge-card>.ico{color:#e4b72b}.badge-card h3{margin:14px 0 4px}.badge-card strong{color:var(--blue)}.badge-card p{margin:8px}
/* LEADERBOARD */
.podium{height:225px;padding:13px 30px 0;background:radial-gradient(ellipse at 52% 50%,#1b1955,var(--bg) 82%);position:relative;overflow:hidden}.confetti{position:absolute;top:8px;width:90%;text-align:center;color:#ffaf2e;font-size:28px;letter-spacing:24px;opacity:.8}.podium-people{height:210px;display:flex;align-items:end;justify-content:center;gap:35px;position:relative;z-index:1}.podium-person{width:28%;height:170px;text-align:center;background:linear-gradient(180deg,rgba(23,65,154,.15),rgba(18,64,135,.35));border:1px solid var(--line);border-radius:12px 12px 0 0;padding:0 10px;display:flex;flex-direction:column;align-items:center;justify-content:center}.podium-person.place-1{height:196px;background:linear-gradient(180deg,#63470c70,#60441330);border-color:#a76f0f}.podium-person.place-3{height:157px;background:linear-gradient(180deg,#75361f50,#6a2a2d30)}.podium-crown{font-size:23px;margin-top:-22px}.podium-avatar{width:55px;height:55px;background:linear-gradient(130deg,#0c85fe,#5b30bf);border:2px solid #9acaff;display:grid;place-items:center;border-radius:50%;font-size:26px}.podium-person b{background:#2877f7;border-radius:18px;padding:1px 17px;margin-top:-1px}.podium-person.place-1 b{background:#efab16}.podium-person.place-3 b{background:#b96145}.podium-person strong{margin-top:4px;font-size:13px;white-space:nowrap;max-width:100%;overflow:hidden;text-overflow:ellipsis}.podium-person big{font-size:19px;font-weight:750}.podium-person small{color:var(--green)}.leaderboard-table{padding:8px 6px 12px;margin-top:12px}.period-tabs{display:flex;gap:8px;margin-bottom:10px}.period-tabs button{flex:1;padding:11px;background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:9px}.table-scroll{overflow-x:auto}.table-scroll table{width:100%;border-collapse:collapse;font-size:13px;white-space:nowrap}.table-scroll th{font-weight:500;background:#052244;color:#bed1f2;text-align:left;padding:10px}.table-scroll td{padding:9px 11px}.table-scroll tr:nth-child(even){background:rgba(19,46,92,.27)}html[data-theme="light"] .table-scroll th{background:#dceafb;color:#183d76}.rank-dot{width:27px;height:27px;display:grid;place-items:center;border-radius:50%;background:#1750a9;color:white}.user-cell{display:flex;align-items:center;gap:9px}.user-cell b{height:26px;width:26px;border-radius:50%;display:grid;place-items:center;background:#1763ca;color:white}.your-rank{display:flex;align-items:center;gap:16px;padding:13px 0 20px}.your-rank .avatar-circle{width:73px;height:73px;font-size:29px}.your-rank>div{font-size:16px}.your-rank>div strong{font-size:26px;display:block}.your-rank>div small{display:block;color:var(--muted)}.rank-stats{display:flex;justify-content:space-between;border-top:1px solid var(--line2);padding:16px 0 5px;gap:10px}.rank-stats>div{display:flex;flex-direction:column;gap:4px;align-items:center;text-align:center}.rank-stats small{color:var(--muted)}.top-performer{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line2);padding:8px 0;font-size:13px}.top-performer>b{border-radius:50%;background:#1d4080;width:29px;height:29px;display:grid;place-items:center}.top-performer span{flex:1}.top-performer strong{color:#00d8f1}
/* SETTINGS */
.settings-tabs{gap:6px}.settings-tabs button{padding:13px 7px}.settings-panels{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.setting-card{padding:15px}.setting-card h3{display:flex;align-items:center;gap:10px;font-size:16px;margin:0 0 4px}.setting-card h3 .ico{color:#16b6ff}.setting-card>p{font-size:12px;margin-bottom:10px}.setting-row{min-height:41px;border-top:1px solid var(--line2);display:flex;justify-content:space-between;align-items:center;gap:10px;padding:5px 0;font-size:13px}.setting-row select{padding:8px 11px;font-size:12px;min-width:124px;max-width:150px}.switch{appearance:none;width:48px;height:26px;background:#50688b;border-radius:18px;position:relative;cursor:pointer;transition:.2s;flex-shrink:0}.switch:after{content:"";width:19px;height:19px;background:white;border-radius:50%;position:absolute;top:3px;left:4px;transition:.2s}.switch:checked{background:#008fff}.switch:checked:after{left:24px}.color-dots{display:flex;gap:10px}.color-dots button{width:24px;height:24px;border-radius:50%;border:0;background:var(--dot)}.color-dots button.active{outline:2px solid var(--text);outline-offset:3px}.account-link{background:transparent;border:0;border-bottom:1px solid var(--line2);width:100%;padding:13px 4px;display:flex;justify-content:space-between;align-items:center;color:var(--text);text-align:left;font-size:13px}.account-link:hover{color:var(--blue)}.logout-button{width:100%;margin-top:13px;border:1px solid #ff4266;color:#ff526c;background:transparent;border-radius:10px;padding:10px;display:flex;align-items:center;justify-content:center;gap:7px}.profile-form{display:grid;gap:10px;padding:10px 0;border-top:1px solid var(--line2);margin-bottom:16px}.profile-form label{font-size:13px;display:grid;gap:5px}.profile-form input{background:var(--bg);border:1px solid var(--line);padding:11px;color:var(--text);border-radius:8px}.profile-form button{justify-self:start}.settings-panels.focus-one{grid-template-columns:1fr}.settings-panels.focus-one .setting-card{display:none}.settings-panels.focus-one .setting-card.is-shown{display:block}.settings-panels.focus-one .setting-card .setting-row{min-height:53px}
/* HISTORY */
.history-panel{padding:18px}.search-results{position:fixed;top:84px;left:45%;transform:translateX(-10%);z-index:100;width:min(450px,90vw);background:var(--panel2);border:1px solid var(--line);padding:11px;border-radius:12px;box-shadow:0 20px 30px #0004}.search-results a{display:flex;padding:10px;align-items:center;gap:10px;border-radius:8px}.search-results a:hover{background:var(--soft)}.toast{position:fixed;right:26px;bottom:22px;z-index:500;opacity:0;pointer-events:none;transform:translateY(20px);background:#123e6a;color:white;padding:14px 20px;border:1px solid #258cff;border-radius:10px;box-shadow:0 12px 30px #0004;max-width:390px;transition:.2s}.toast.show{opacity:1;transform:translateY(0)}
/* PUBLIC AUTH */
.guest{background:radial-gradient(ellipse at 75% 20%,#14084e,var(--bg) 75%)}.guest .sidebar{background:linear-gradient(175deg,#041632,#060d2b)}.auth-main{flex:1;display:flex;align-items:center;justify-content:space-around;gap:24px;padding:36px 30px;min-width:0;position:relative;overflow:hidden}.auth-main:after{content:'';position:absolute;width:1200px;height:250px;border-radius:50%;border-top:8px solid #3d5cff;bottom:-215px;left:-50px;transform:rotate(-3deg);box-shadow:0 -16px 50px rgba(76,32,216,.28);pointer-events:none}.auth-left{flex:1;max-width:770px;min-width:0;position:relative;z-index:1}.feature-badge{display:inline-flex;background:var(--soft);border:1px solid var(--line);border-radius:30px;padding:13px 20px;color:#c4d8ff;font-size:14px;margin-bottom:29px}.auth-left h1{font-size:clamp(40px,4.15vw,72px);font-weight:850;letter-spacing:-2.5px;line-height:1.09;margin-bottom:21px;position:relative;z-index:2}.auth-left h1 span{background:linear-gradient(95deg,#4ccfff,#177bff);background-clip:text;color:transparent}.auth-left>p{font-size:21px;color:#afc4ea;max-width:420px;line-height:1.48;position:relative;z-index:2;margin-bottom:55px}.auth-art{position:absolute;right:-70px;top:52px;width:60%;height:435px;background:url('../img/login-keys.webp') center/cover no-repeat;mask-image:linear-gradient(90deg,transparent 0%,#000 35%);opacity:.91;z-index:0}.auth-highlights{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:54px;position:relative;z-index:2}.auth-highlights div{display:flex;align-items:center;gap:10px;font-size:13px;color:#f0f6ff}.auth-highlights b{display:grid;place-items:center;min-width:52px;height:52px;border:1px solid #03aaee;border-radius:12px;background:#003755;color:#00feac;font-size:30px}.auth-highlights div:nth-child(2) b{color:#b240ff;border-color:#6234f0;background:#260e5b}.auth-highlights div:nth-child(3) b{color:#ffaf37;border-color:#ce8730;background:#42250d}.auth-highlights div:nth-child(4) b{color:#ed5bcc;border-color:#dc3db9;background:#4f0e49}.auth-numbers{display:flex;justify-content:space-around;padding:22px;position:relative;z-index:2}.auth-numbers div{flex:1;display:flex;flex-direction:column;align-items:center;border-right:1px solid var(--line);text-align:center}.auth-numbers div:last-child{border:0}.auth-numbers strong{font-size:30px;color:#02bfff}.auth-numbers b{font-size:22px}.auth-numbers small{color:var(--muted);font-size:13px}.auth-card{width:478px;flex:0 0 478px;max-width:100%;padding:29px 32px;min-height:655px;border:1px solid #1189fc;border-radius:21px;background:linear-gradient(135deg,rgba(16,30,74,.97),rgba(6,16,48,.96));box-shadow:0 0 38px rgba(5,84,223,.12);position:relative;z-index:2}.auth-tabs{display:flex;background:#182748;border-radius:14px;padding:4px;margin-bottom:33px}.auth-tabs button{flex:1;border:0;padding:12px;background:transparent;color:#aab7d8;border-radius:10px;font-weight:650;font-size:16px}.auth-tabs button.active{background:var(--brand-gradient);color:#fff}.auth-title{text-align:center;margin-bottom:29px}.auth-title h2{color:#fff;font-size:28px;margin:0 0 8px}.auth-title p{color:#a9bbd8;margin:0}.auth-field{display:flex;align-items:center;gap:12px;height:60px;background:#142448;color:#77b9fc;border:1px solid #2e4877;border-radius:13px;margin-bottom:14px;padding:0 16px}.auth-field input{background:transparent;border:0;outline:0;width:100%;min-width:0;color:white;font-size:14px}.auth-field input::placeholder{color:#b4bfdb}.auth-field button{color:#a4bedc;background:transparent;border:0}.remember-line{display:flex;justify-content:space-between;align-items:center;gap:8px;margin:13px 0 27px;color:#d8e4ff;font-size:13px}.remember-line label{display:flex;align-items:center;gap:6px}.remember-line input{accent-color:#008dff}.remember-line a,.auth-switch a{color:#00c5ff}.auth-submit{width:100%;height:56px;font-size:17px}.auth-separator{text-align:center;font-size:12px;margin:33px 0;color:#a5b1cd;letter-spacing:1px}.social-sample{display:flex;gap:13px}.social-sample span{flex:1;display:flex;align-items:center;gap:9px;background:#192a49;border-radius:11px;padding:12px 10px;font-size:12px;color:#dfeaff}.social-sample .ico{color:#42bdff}.auth-switch{text-align:center;font-size:14px;margin:37px 0 0;color:#a9b9d7}.auth-theme-toggle{position:absolute;top:16px;right:20px;z-index:3;background:transparent;border:0;color:#ffda54}.form-error{background:#78223f66;border:1px solid #b44a5d;padding:10px;color:#ffd0d0;border-radius:8px;margin:0 0 17px}.simple-page{display:grid;place-items:center;min-height:100vh}.simple-card{max-width:540px;margin:20px;padding:30px}.simple-card a{margin-top:14px}
/* LIGHT MODE special decorative overrides */
html[data-theme="light"] .sidebar-promo,html[data-theme="light"] .hero,html[data-theme="light"] .auth-card{color:white}html[data-theme="light"] .hero h1,html[data-theme="light"] .hero p{color:white}html[data-theme="light"] .hero .ghost-button{color:white}html[data-theme="light"] .typing-footer{background:transparent}html[data-theme="light"] .key{background:#4e6788;color:white}html[data-theme="light"] .key.home-left{background:#0376d1}html[data-theme="light"] .key.home-right{background:#098452}html[data-theme="light"] .settings-panels .segmented{background:#edf4ff}html[data-theme="light"] .auth-highlights div{color:#234366}html[data-theme="light"] .auth-left>p{color:var(--muted)}html[data-theme="light"] .feature-badge{color:var(--text)}html[data-theme="light"] .auth-field input{color:white}html[data-theme="light"] .auth-numbers{background:#fff}
@keyframes caretPulse{50%{border-color:transparent}}
@media(max-width:1450px){.sidebar{width:226px;min-width:226px}.brand{padding:12px}.brand strong{font-size:20px}.brand small{font-size:8px}.brand-mark{width:55px;height:55px;min-width:55px}.side-link{gap:15px}.topbar{padding:0 15px}.top-title{min-width:125px}.profile-short>span,.streak{display:none}.workspace-columns{grid-template-columns:minmax(0,1fr) 294px}.metric{gap:11px;padding:12px}.metric-icon{width:50px;height:50px;min-width:50px}.metric strong{font-size:22px}.dashboard-panels{grid-template-columns:1fr 1fr}.dashboard-side{grid-column:span 2;display:grid;grid-template-columns:1fr 1fr}.hero h1{font-size:42px}.hero-quote{font-size:25px}.typing-metrics .metric{padding:9px;gap:7px}.typing-metrics .metric-icon{width:45px;height:45px;min-width:45px}.typing-metrics .metric strong{font-size:20px}.typing-metrics .metric-label{font-size:11px}.settings-panels{grid-template-columns:1fr 1fr}.auth-card{flex-basis:430px;width:430px}.auth-left h1{font-size:48px}.auth-highlights{gap:7px}.auth-highlights b{min-width:40px;height:46px}.auth-highlights div{font-size:11px}}
@media(max-width:1120px){.sidebar{width:76px;min-width:76px}.brand{padding:12px 9px}.brand-mark{width:55px;min-width:55px}.brand>span:last-child{display:none}.side-nav{padding:15px 7px}.side-link{justify-content:center;padding:12px 0;gap:0}.side-link span,.sidebar-promo{display:none}.topbar{height:78px}.page{padding:13px}.top-title{min-width:120px}.search-box{max-width:400px}.hero-text{width:62%}.hero-quote{font-size:19px}.workspace-columns{grid-template-columns:1fr}.right-rail{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:12px}.settings-panels{grid-template-columns:repeat(2,minmax(0,1fr))}.auth-main{padding:26px}.auth-card{width:390px;flex-basis:390px;padding:25px}.auth-left h1{font-size:42px}.auth-art{right:-30px;opacity:.6}.auth-highlights{display:grid;grid-template-columns:1fr 1fr}.auth-left>p{font-size:17px;margin-bottom:25px}}
@media(max-width:800px){.sidebar{position:fixed;transform:translateX(-100%);width:250px;min-width:250px;transition:transform .2s;box-shadow:15px 0 50px #0005}.sidebar.open{transform:translateX(0)}.sidebar .brand>span:last-child{display:block}.sidebar .side-link{justify-content:flex-start;gap:18px;padding:12px 17px}.sidebar .side-link span,.sidebar .sidebar-promo{display:block}.sidebar .sidebar-promo{display:flex}.topbar{height:72px;padding:0 12px}.desktop-page-title{display:none}.mobile-menu,.mobile-brand{display:inline-flex!important}.mobile-brand{font-weight:700;font-size:19px}.top-title{display:flex;align-items:center;gap:10px}.search-box{max-width:none;flex:1}.search-box kbd,.notify-btn,.streak{display:none}.top-actions{gap:5px}.profile-short>b{width:35px;height:35px;font-size:15px}.profile-short>span,.profile-short>.ico{display:none}.page{padding:10px}.hero{height:auto;min-height:275px}.hero-text{width:80%;padding:24px}.hero h1{font-size:37px}.hero p{font-size:14px}.hero-art{inset:0 -30% 0 25%;opacity:.3}.hero-quote{display:none}.summary-grid{grid-template-columns:repeat(2,1fr)}.dashboard-panels{grid-template-columns:1fr}.dashboard-side{grid-column:auto;grid-template-columns:1fr}.page-heading{padding:14px;gap:11px}.heading-icon{width:51px;height:51px;min-width:51px}.heading-icon .ico{width:29px;height:29px}.heading-copy h1{font-size:21px}.heading-copy p{font-size:12px}.heading-extra{margin-left:auto}.heading-extra label{font-size:11px}.heading-extra select{max-width:112px;padding:6px}.right-rail{grid-template-columns:1fr 1fr}.typing-metrics{grid-template-columns:repeat(3,1fr)}.lesson-summary{grid-template-columns:repeat(2,1fr)}.tab-buttons{flex-wrap:wrap}.tab-buttons button{min-width:26%;flex-grow:1}.typing-footer .start-button{width:auto;flex:1}.settings-panels{grid-template-columns:1fr 1fr}.progress-bottom{grid-template-columns:1fr}.auth-main{flex-direction:column;padding:40px 12px}.guest .sidebar{display:none}.auth-left{max-width:580px}.auth-left h1{font-size:46px}.auth-left>p{margin-bottom:35px}.auth-card{flex-basis:auto;width:min(100%,580px)}.auth-numbers{margin-bottom:20px}.auth-art{right:-90px}.trust-strip{flex-wrap:wrap}}
@media(max-width:520px){body{font-size:13px}.top-title{min-width:auto}.mobile-brand{font-size:15px}.topbar{gap:6px}.search-box{height:40px;padding:0 9px;gap:6px}.search-box input{font-size:11px}.theme-button{padding:4px}.hero-text{width:100%}.hero h1{font-size:32px}.hero-buttons{gap:7px}.hero-buttons .gradient-button,.hero-buttons .ghost-button{font-size:12px;padding:10px}.summary-grid{gap:7px}.metric{min-height:95px;padding:9px;gap:7px}.metric-icon{width:40px;height:40px;min-width:40px}.metric-icon .ico{width:22px;height:22px}.metric strong{font-size:18px}.metric-label{font-size:11px}.metric small{font-size:10px}.page-heading{flex-wrap:wrap}.heading-copy{flex:1}.heading-extra{width:100%;justify-content:flex-end}.right-rail{grid-template-columns:1fr}.typing-metrics{grid-template-columns:repeat(2,1fr);gap:6px}.typing-metrics .metric{min-height:70px}.typing-metrics .metric strong{font-size:18px}.typing-metrics .metric-icon{width:38px;height:38px;min-width:38px}.passage{font-size:16px;letter-spacing:1px;padding:10px;min-height:130px}.key-row{gap:2px;height:30px}.keyboard{padding:5px;gap:3px}.key{font-size:9px;border-radius:3px}.typing-footer{flex-wrap:wrap}.typing-footer .start-button{order:-1;flex:0 0 100%;width:100%;min-height:48px}.typing-footer .outline-button{flex:1;font-size:11px;padding:6px}.settings-panels{grid-template-columns:1fr}.settings-tabs button{min-width:40%}.auth-highlights{grid-template-columns:1fr 1fr}.auth-highlights div{font-size:11px}.auth-highlights b{min-width:40px}.auth-left h1{font-size:38px}.auth-numbers{padding:10px 0}.auth-numbers b{font-size:13px}.auth-numbers small{font-size:9px}.auth-card{padding:21px}.auth-art{opacity:.2}.podium{padding:10px}.podium-people{gap:7px}.podium-person{width:32%}.podium-person strong{font-size:11px}.podium-person big{font-size:16px}.achievement-grid{grid-template-columns:1fr}.trust-strip{display:none}}

/* Smaller lesson header, preserving live stats inside the workspace */
html[data-theme="light"] .auth-left h1{color:var(--text)}

.period-tabs a{flex:1;padding:11px;background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:9px;text-align:center}.period-tabs a.selected{background:var(--brand-gradient);border-color:transparent;color:#fff}

html[data-background="Solid"] body{background:var(--shell)}html[data-background="Solid"] .topbar{background:var(--shell)}html[data-density="Compact"] .metric{min-height:85px;padding:9px}html.no-motion *,html.no-motion *:before,html.no-motion *:after{transition:none!important;animation:none!important;scroll-behavior:auto!important}.passage.font-large{font-size:29px}.passage.font-small{font-size:18px}

/* ================================================================
   VERSION 2 — SOFTWARE WORKSPACE / TRUE LIGHT MODE
   Browser fullscreen uses the native Fullscreen API, only after click.
   Fit Screen keeps content inside the viewport with internal scroll.
   ================================================================= */
:root{--toolbar-height:76px;--guest-toolbar-height:62px;--screen-padding:clamp(16px,2.1vw,40px)}
@media (min-width:801px){
  html[data-fit="on"] body{overflow:hidden}
  html[data-fit="on"] .app-shell{width:100%;max-width:none;height:100dvh;min-height:0;margin:0;overflow:hidden;box-shadow:none}
  html[data-fit="on"] .sidebar{position:relative;top:auto;height:100%;min-height:0;flex-shrink:0}
  html[data-fit="on"] .shell-main{height:100%;min-height:0;display:flex;flex-direction:column;overflow:hidden}
  html[data-fit="on"] .topbar{flex:0 0 var(--toolbar-height);height:var(--toolbar-height)}
  html[data-fit="on"] .page{flex:1;min-height:0;width:100%;max-width:none;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;padding:16px clamp(14px,1.3vw,26px) 24px}
  html[data-fit="on"] .auth-main{height:100%;min-height:0;overflow:hidden}
  html[data-fit="on"] .auth-stage{overflow:auto;overscroll-behavior:contain;scrollbar-width:thin}
  html[data-fit="off"] .app-shell{width:100%;max-width:none}
}
@media (min-width:1121px){.sidebar{width:clamp(228px,16vw,278px);min-width:clamp(228px,16vw,278px)}}
.sidebar,.shell-main,.auth-main,.auth-stage{transition:background .22s,border-color .22s}
.topbar{min-width:0}.top-title{display:flex;align-items:center;gap:12px;min-width:140px}
.sidebar-collapse{height:38px;width:38px;color:var(--muted);border:1px solid var(--line2);border-radius:10px;background:var(--soft)}
.sidebar-collapse:hover{color:var(--text);border-color:var(--blue)}
.top-actions,.guest-window-actions{display:flex;align-items:center;gap:10px}
.fit-control{display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;height:38px;padding:0 13px;font-size:12px;color:var(--muted);background:var(--panel2);border:1px solid var(--line);border-radius:10px;font-weight:700}
.fit-control.is-active{color:var(--blue);background:var(--soft);border-color:var(--blue)}
.fullscreen-control{width:38px;height:38px;border:1px solid var(--line);background:var(--panel2);color:var(--muted);border-radius:10px}
.fullscreen-control:hover,.fullscreen-control[aria-pressed="true"]{color:var(--blue);border-color:var(--blue)}
html.sidebar-is-collapsed .sidebar{width:79px!important;min-width:79px!important}
html.sidebar-is-collapsed .sidebar .brand{padding:12px 9px;justify-content:center}
html.sidebar-is-collapsed .sidebar .brand>span:last-child{display:none}
html.sidebar-is-collapsed .sidebar .side-nav{padding:18px 8px}
html.sidebar-is-collapsed .sidebar .side-link{gap:0;justify-content:center;padding:12px 0}
html.sidebar-is-collapsed .sidebar .side-link>span,.sidebar-is-collapsed .sidebar .sidebar-promo{display:none!important}
html.sidebar-is-collapsed .sidebar .brand-mark{width:54px;min-width:54px;height:54px}
html.sidebar-is-collapsed .sidebar .side-link{height:56px}
html.is-fullscreen .app-shell{width:100vw;height:100dvh}
/* public software-style login window */
.guest .auth-main{display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;padding:0;background:radial-gradient(ellipse at 62% 30%,rgba(36,36,151,.22),transparent 61%),linear-gradient(140deg,var(--bg),var(--shell) 80%);position:relative}
.guest .auth-main:after{width:85%;height:210px;bottom:-194px;left:3%;z-index:0}
.guest-toolbar{height:var(--guest-toolbar-height);min-height:var(--guest-toolbar-height);padding:0 clamp(14px,2.2vw,36px);display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line2);background:rgba(5,22,49,.76);position:relative;z-index:5}
.guest-workspace-name,.guest-window-actions{display:flex;align-items:center;gap:12px;min-width:0}
.guest-workspace-name{color:var(--text);font-size:14px}.guest-workspace-name strong{font-size:15px;white-space:nowrap}.guest-toolbar-subtitle{font-size:12px;color:var(--muted);padding-left:12px;border-left:1px solid var(--line)}
.workspace-led{height:9px;width:9px;flex:0 0 9px;border-radius:50%;background:#00e6b1;box-shadow:0 0 10px #00b984}
.guest-toolbar .auth-theme-toggle{position:static;border:1px solid var(--line);border-radius:10px;background:var(--panel2);color:#ffcd37;height:38px;width:38px;display:grid;place-items:center}
.auth-stage{flex:1;min-height:0;width:100%;max-width:1900px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1.32fr) minmax(360px,.9fr);align-items:center;gap:clamp(24px,3.4vw,72px);padding:clamp(20px,3.1vh,40px) var(--screen-padding);position:relative;z-index:2}
.auth-left{width:100%;max-width:950px;align-self:center}.auth-card{align-self:center;justify-self:stretch;width:100%;max-width:515px;min-width:0;min-height:0;flex:auto;margin:0 auto;padding:clamp(20px,2vw,33px);border-radius:20px}
.auth-left h1{font-size:clamp(40px,4vw,74px);margin-bottom:15px;line-height:1.07}
.feature-badge{padding:10px 16px;margin-bottom:20px}
.auth-left>p{font-size:clamp(16px,1.3vw,21px);margin-bottom:clamp(19px,3.5vh,45px)}
.auth-art{top:clamp(75px,12vh,165px);right:-4%;width:61%;height:clamp(270px,47vh,490px);background-size:contain;mask-image:radial-gradient(ellipse at 56% 49%,black 20%,transparent 82%);pointer-events:none}
.auth-highlights{gap:12px;margin-bottom:clamp(18px,4vh,48px);align-items:stretch}
.auth-highlights div{flex:1;min-width:0;position:relative}.auth-highlights div span{line-height:1.45}
.auth-numbers{padding:clamp(13px,2vh,22px)}.auth-numbers b{font-size:clamp(15px,1.2vw,22px)}
.auth-tabs{margin-bottom:clamp(15px,2.6vh,32px)}.auth-title{margin-bottom:clamp(15px,2.7vh,29px)}
.auth-field{height:clamp(48px,6vh,60px);margin-bottom:clamp(10px,1.6vh,14px)}
.auth-submit{height:clamp(48px,6vh,56px)}
.auth-separator{margin:clamp(17px,3vh,33px) 0;font-size:11px}
.auth-switch{margin:clamp(18px,3vh,37px) 0 0}.remember-line{margin:10px 0 clamp(16px,2.5vh,26px)}
.auth-main .panel,.auth-card,.auth-field{transition:background .2s,border-color .2s,color .2s}
.guest-preview-dialog{width:min(440px,calc(100vw - 30px));background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:0 30px 100px rgba(0,0,0,.48)}
.guest-preview-dialog::backdrop{background:rgba(1,8,28,.7);backdrop-filter:blur(5px)}
.guest-preview-dialog .dialog-kicker{font-size:11px;letter-spacing:2px;color:var(--blue);font-weight:800}.guest-preview-dialog h2{margin:12px 0;font-size:26px}.guest-preview-dialog p{line-height:1.7}.guest-preview-dialog .dialog-actions{margin-top:24px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}.guest-preview-dialog .dialog-close{position:absolute;top:12px;right:15px;border:0;background:transparent;font-size:27px;color:var(--muted)}
/* light theme — full application, including public authentication */
html[data-theme="light"]{--bg:#edf4ff;--shell:#f6f9ff;--sidebar:#fafdff;--panel:#ffffff;--panel2:#f4f8ff;--soft:#eaf2ff;--text:#1b3155;--muted:#607694;--line:#cbdbf2;--line2:#dce7f5;--blue:#116de5;--green:#008d68;--amber:#b97900;--red:#db375f;--card-gradient:linear-gradient(145deg,#fff,#f7faff);--head-gradient:linear-gradient(110deg,#ebf5ff,#dee9ff 57%,#f1e4ff);--shadow:0 7px 24px rgba(33,83,156,.07)}
html[data-theme="light"] .guest{background:#eef5ff}
html[data-theme="light"] .guest .sidebar{background:linear-gradient(180deg,#ffffff,#eef5ff)}
html[data-theme="light"] .guest .auth-main{background:radial-gradient(ellipse at 57% 20%,rgba(98,166,255,.13),transparent 66%),linear-gradient(135deg,#fafdff,#eaf2ff)}
html[data-theme="light"] .guest-toolbar{background:rgba(255,255,255,.9);border-bottom-color:#d9e5f8}
html[data-theme="light"] .guest-toolbar .auth-theme-toggle{background:#fff;color:#1968ed}
html[data-theme="light"] .auth-left h1{color:#18335e}
html[data-theme="light"] .feature-badge{background:#fff;color:#365780;border:1px solid #c8d9f4}
html[data-theme="light"] .auth-left>p{color:#546d91}
html[data-theme="light"] .auth-highlights div{color:#253e64}
html[data-theme="light"] .auth-highlights b{background:#e5f8ff;color:#0076cb}
html[data-theme="light"] .auth-highlights div:nth-child(2) b{background:#eee8ff;color:#8340db}
html[data-theme="light"] .auth-highlights div:nth-child(3) b{background:#fff2d9;color:#cf7600}
html[data-theme="light"] .auth-highlights div:nth-child(4) b{background:#ffe8f9;color:#bd2c9d}
html[data-theme="light"] .auth-art{opacity:.63}
html[data-theme="light"] .auth-numbers{background:#fff;border-color:#d2e2f7;box-shadow:0 14px 32px #164f9a0c}
html[data-theme="light"] .auth-numbers strong{color:#0877de}
html[data-theme="light"] .auth-numbers small{color:#6a7e9d}
html[data-theme="light"] .auth-card{color:#1b3155;background:linear-gradient(145deg,#fff,#f7faff);border-color:#b6d5ff;box-shadow:0 15px 45px rgba(42,106,210,.14)}
html[data-theme="light"] .auth-tabs{background:#e8f0fc}
html[data-theme="light"] .auth-tabs button{color:#536e95}
html[data-theme="light"] .auth-tabs button.active{color:#fff}
html[data-theme="light"] .auth-title h2{color:#172b50}
html[data-theme="light"] .auth-title p{color:#657a9b}
html[data-theme="light"] .auth-field{background:#f4f8ff;border-color:#cbdaef;color:#2472da}
html[data-theme="light"] .auth-field:focus-within{border-color:#2c8dff;box-shadow:0 0 0 3px #3b93ef22}
html[data-theme="light"] .auth-field input{color:#203757}
html[data-theme="light"] .auth-field input::placeholder{color:#7689a6}
html[data-theme="light"] .auth-field button{color:#477aa9}
html[data-theme="light"] .remember-line{color:#425d80}
html[data-theme="light"] .remember-line a,html[data-theme="light"] .auth-switch a{color:#086cd8}
html[data-theme="light"] .auth-separator{color:#7d8eaa}
html[data-theme="light"] .social-sample span{background:#eaf2fe;color:#305179;border:1px solid #d9e6f9}
html[data-theme="light"] .auth-switch{color:#627894}
html[data-theme="light"] .sidebar-promo{background:linear-gradient(125deg,#eaf5ff,#dbe6ff 55%,#eadbff);border-color:#99affd;color:#1d396a}
html[data-theme="light"] .sidebar-promo small{color:#536998}
html[data-theme="light"] .topbar{background:linear-gradient(100deg,#fcfdff,#f5f9ff,#f3edff)}
html[data-theme="light"] .search-box{background:#fff;border-color:#cbdcf2;color:#3974ba}
html[data-theme="light"] .search-box input{color:#1b3155}
html[data-theme="light"] .theme-button{color:#256ee8;filter:none}
html[data-theme="light"] .icon-btn{color:#3e75bc}
html[data-theme="light"] .fit-control{background:#fff}
html[data-theme="light"] .fit-control.is-active{background:#e9f3ff}
html[data-theme="light"] .ghost-button,html[data-theme="light"] .outline-button{background:#eff5ff;color:#284972;border-color:#c9dafa}
html[data-theme="light"] .hero{background:radial-gradient(ellipse at 65% 55%,rgba(135,195,255,.55),transparent 58%),linear-gradient(115deg,#fdfdff,#dceaff 72%,#e8dafa);border-color:#91b6f9}
html[data-theme="light"] .hero h1{color:#1d3965}
html[data-theme="light"] .hero p{color:#52698b}
html[data-theme="light"] .hero-eyebrow{color:#246ecd}
html[data-theme="light"] .hero-quote{color:#4949bf;text-shadow:0 0 8px #9993ff66}
html[data-theme="light"] .hero-art{opacity:.72}
html[data-theme="light"] .typing-zone{background:#f9fbff;border-color:#b6d4f7}
html[data-theme="light"] .passage{color:#314d75;background:#fff;border-color:#d4e1f2}
html[data-theme="light"] .passage .upcoming{color:#597397}
html[data-theme="light"] .passage .current{background:#adf5d9;color:#075745;border-left-color:#00a977}
html[data-theme="light"] .passage .correct{color:#076a4f;background:#bef4df}
html[data-theme="light"] .passage .wrong{color:#fff}
html[data-theme="light"] .typing-input{background:#fff;color:#1b3155;border-color:#c4d8f3}
html[data-theme="light"] .typing-footer{background:transparent}
html[data-theme="light"] .keyboard{background:#dfeafa;border-color:#c7daf3}
html[data-theme="light"] .key{background:linear-gradient(145deg,#fff,#e9eff8);border:1px solid #c5d7ef;box-shadow:0 2px 2px rgba(25,80,149,.06);color:#304d73}
html[data-theme="light"] .key.home-left{background:linear-gradient(135deg,#008ee8,#2464d7);color:white}
html[data-theme="light"] .key.home-right{background:linear-gradient(135deg,#009f72,#087647);color:white}
html[data-theme="light"] .pick-row{background:#f4f8ff}
html[data-theme="light"] .cal-days span{background:#e8f1fd;color:#37557c}
html[data-theme="light"] .cal-days span.practiced{background:#05a875;color:white}
html[data-theme="light"] .cal-days span.today{background:#128bfc;color:white}
html[data-theme="light"] .progress-bar{background:#dce6f6}
html[data-theme="light"] .podium{background:radial-gradient(ellipse at 50% 50%,#e7edff,#f9fbff 83%)}
html[data-theme="light"] .podium-person{background:linear-gradient(180deg,#edf3ff,#d9e9ff)}
html[data-theme="light"] .podium-person.place-1{background:linear-gradient(180deg,#fff7e4,#f8edcf)}
html[data-theme="light"] .podium-person.place-3{background:linear-gradient(180deg,#fff0ec,#f6e1da)}
html[data-theme="light"] .table-scroll tr:nth-child(even){background:#f1f6ff}
html[data-theme="light"] .live-stats{background:#f3f8ff}
html[data-theme="light"] .lesson-list-row.active,html[data-theme="light"] .lesson-list-row.active strong{color:#fff}
html[data-theme="light"] .level-pill{background:#d7f8ed;color:#007653;border-color:#8cdabe}
html[data-theme="light"] .toast{background:#fff;color:#1b3155;border-color:#a1c3ed;box-shadow:0 20px 35px #11356630}
@media(max-width:1450px){
 .auth-stage{gap:clamp(18px,2.2vw,35px);padding:17px clamp(14px,1.8vw,30px)}
 .auth-left h1{font-size:clamp(38px,4vw,60px)}
 .auth-highlights{gap:6px}
 .auth-highlights b{min-width:41px;height:45px}
 .auth-card{max-width:470px}
 .guest-toolbar-subtitle{display:none}
 .top-actions{gap:8px}
}
@media(min-width:801px) and (max-height:780px){
 .guest-toolbar{height:54px;min-height:54px}
 .auth-stage{padding:10px 24px;gap:24px}
 .auth-left h1{font-size:clamp(35px,3.8vw,61px);margin-bottom:10px}
 .feature-badge{margin-bottom:12px;padding:8px 12px}
 .auth-left>p{margin-bottom:20px;line-height:1.38}
 .auth-highlights{margin-bottom:19px}
 .auth-numbers{padding:11px}
 .auth-card{padding:17px 22px}
 .auth-tabs{margin-bottom:15px}
 .auth-title{margin-bottom:16px}
 .auth-title h2{font-size:24px}
 .auth-field{height:46px;margin-bottom:10px}
 .remember-line{margin:8px 0 14px}
 .auth-submit{height:46px}
 .auth-separator{margin:13px 0}
 .social-sample span{padding:8px}
 .auth-switch{margin:16px 0 0}
 .sidebar-promo{min-height:114px;padding:14px}
 .side-nav{padding-top:12px;gap:3px}
 .side-link{height:48px;padding:10px 16px}
 .brand{height:78px}
}
@media(min-width:801px) and (max-height:600px){
 .auth-stage{align-items:start}
 .auth-card{margin:0 auto}
 .auth-left{padding-top:12px}
 .auth-highlights{margin-bottom:12px}
 .auth-left>p{margin-bottom:12px}
 .auth-numbers{padding:8px}
 .sidebar-promo{display:none}
}
@media(max-width:1120px){.top-title{min-width:auto}.top-actions .fit-control span{display:none}.top-actions .fit-control{width:38px;padding:0}.sidebar-collapse{display:none}}
@media(min-width:801px) and (max-width:1120px){.auth-stage{grid-template-columns:minmax(0,1fr) minmax(315px,.95fr);gap:20px}.auth-left h1{font-size:clamp(34px,4vw,50px)}.auth-highlights div{font-size:10px}.auth-numbers b{font-size:15px}.auth-card{padding:20px}}
@media(max-width:800px){
 .guest .auth-main{height:auto;min-height:100dvh;overflow:visible}
 .guest-toolbar{position:sticky;top:0;min-height:59px;height:59px;padding:0 12px}
 .guest-toolbar .mobile-menu{display:grid!important}
 .guest-toolbar .sidebar-collapse{display:none}
 .guest-workspace-name{gap:8px}.guest-workspace-name strong{font-size:13px}
 .guest-window-actions{gap:6px}.guest-window-actions .fit-control span{display:none}.guest-window-actions .fit-control{width:35px;padding:0}.guest-window-actions .fullscreen-control,.guest-window-actions .auth-theme-toggle{width:35px;height:35px}
 .auth-stage{display:flex;flex-direction:column;align-items:stretch;overflow:visible!important;padding:28px 13px 36px;gap:18px}
 .auth-left,.auth-card{max-width:650px;width:100%;margin:0 auto;flex:auto}
 .auth-card{padding:22px;min-height:0}
 .auth-left h1{font-size:clamp(36px,7vw,56px)}
 .auth-art{width:58%;right:0;top:40px;opacity:.4}
 .auth-left>p{margin-bottom:23px}
 .auth-highlights{margin-bottom:20px}
 .auth-numbers{margin-bottom:0}
 html[data-fit="on"] .app-shell{height:auto;min-height:100dvh;overflow:visible}
}
@media(max-width:520px){
 .guest-workspace-name strong{font-size:12px}.guest-workspace-name .workspace-led{display:none}
 .guest-window-actions .fit-control{display:none}
 .auth-stage{padding-top:18px}.auth-left h1{letter-spacing:-1.5px}
 .auth-highlights div{font-size:10px}.auth-highlights b{min-width:37px;height:40px;font-size:23px}
 .auth-numbers strong{font-size:21px}.auth-numbers b{font-size:13px}
 .auth-tabs button{padding:11px}.auth-title h2{font-size:24px}
}
/* A collapsed desktop sidebar becomes a normal slide-out drawer on mobile. */
@media(max-width:800px){
 html.sidebar-is-collapsed .sidebar{width:250px!important;min-width:250px!important}
 html.sidebar-is-collapsed .sidebar .brand>span:last-child{display:block}
 html.sidebar-is-collapsed .sidebar .brand{justify-content:flex-start;padding:12px 9px}
 html.sidebar-is-collapsed .sidebar .side-nav{padding:15px 7px}
 html.sidebar-is-collapsed .sidebar .side-link{justify-content:flex-start;gap:18px;padding:12px 17px}
 html.sidebar-is-collapsed .sidebar .side-link>span{display:inline!important}
 html.sidebar-is-collapsed .sidebar .sidebar-promo{display:flex!important}
}
/* Fade image fragments into the actual HTML design instead of a hard rectangular crop. */
.hero-art{mask-image:radial-gradient(ellipse at 56% 44%,#000 35%,transparent 85%)}
html[data-theme="light"] .hero-art{opacity:.54;mask-image:radial-gradient(ellipse at 56% 44%,#000 30%,transparent 80%)}
html[data-theme="light"] .hero .ghost-button{color:#264972;background:#f0f5ff;border-color:#c0d4f4}

/* ================================================================
   VERSION 3 — FULL-HEIGHT LESSON STUDIO
   Uses the available desktop viewport, keeps the virtual keyboard
   near the sidebar promo bottom, and expands the typing editor when
   the keyboard is hidden. Falls back to normal scrolling on laptops.
   ================================================================ */
.lesson-workspace-columns{--lesson-gap:12px}
.lesson-workspace-columns .lesson-summary,.lesson-workspace-columns .typing-metrics{gap:10px;margin-bottom:var(--lesson-gap)}
.lesson-workspace-columns .typing-zone{transition:border-color .18s,background .18s}
.lesson-workspace-columns .typing-input{resize:none}
.lesson-workspace-columns .keyboard{border-radius:0 0 13px 13px}
.lesson-workspace-columns .typing-footer{padding-left:4px;padding-right:4px}
.lesson-workspace-columns .typing-footer .start-button{min-width:235px}
.lesson-rail-box{overflow:hidden}
.lesson-rail-head{margin-bottom:11px}
.lesson-total{display:inline-flex;align-items:center;white-space:nowrap;border:1px solid var(--line);border-radius:16px;padding:5px 9px;font-size:11px;color:var(--muted);background:var(--soft)}
.lesson-rail-tools{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.lesson-search{min-width:0;flex:1;display:flex;align-items:center;gap:7px;background:var(--panel2);border:1px solid var(--line2);color:var(--muted);border-radius:9px;padding:7px 9px}
.lesson-search:focus-within{border-color:var(--blue);box-shadow:0 0 0 2px rgba(11,142,248,.12)}
.lesson-search input{background:none;border:0;outline:0;color:var(--text);font-size:12px;min-width:0;width:100%}
.lesson-search input::placeholder{color:var(--muted)}
.lesson-done-count{font-size:10px;color:var(--green);font-weight:650;white-space:nowrap}
.lesson-list{scrollbar-color:var(--line) transparent;scrollbar-width:thin}
.lesson-list-row{border-radius:9px;transition:background-color .12s;min-height:73px}
.lesson-list-row:not(.active):not(.locked):hover{background:var(--soft)}
.lesson-list-row[hidden]{display:none!important}
.lesson-list-row .lesson-number{flex-shrink:0}
.lesson-list-row:focus-visible{outline-offset:-2px}
.lesson-workspace-columns .typing-zone:focus-within{border-color:var(--blue)}
/* The reading pane grows to fill the space released by a hidden keyboard. */
.lesson-workspace-columns .keyboard-is-hidden .typing-zone{min-height:275px;display:flex;flex-direction:column}
.lesson-workspace-columns .keyboard-is-hidden .passage{flex:1 1 48%;max-height:none;min-height:110px}
.lesson-workspace-columns .keyboard-is-hidden .typing-input{flex:1 1 45%;height:auto;min-height:130px;font-size:clamp(16px,1.1vw,19px);line-height:1.65;padding:17px 19px}
.lesson-workspace-columns .keyboard-is-hidden .typing-hint{flex:none}
.lesson-workspace-columns .keyboard-is-hidden .typing-footer{margin-top:auto}
@media(min-width:1121px) and (min-height:690px){
 html[data-fit="on"] body[data-page="lessons"] .page{display:flex;flex-direction:column;padding-bottom:19px}
 html[data-fit="on"] body[data-page="lessons"] .page-heading{flex:0 0 auto}
 html[data-fit="on"] body[data-page="lessons"] .lesson-workspace-columns{flex:1 1 0;min-height:0;align-items:stretch}
 html[data-fit="on"] body[data-page="lessons"] .lesson-primary{min-width:0;min-height:0;display:flex;flex-direction:column}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary{flex:0 0 auto}
 html[data-fit="on"] body[data-page="lessons"] .typing-workspace{flex:1 1 0;min-height:0;display:flex;flex-direction:column}
 html[data-fit="on"] body[data-page="lessons"] .typing-metrics{flex:0 0 auto}
 html[data-fit="on"] body[data-page="lessons"] .typing-zone{flex:1 1 0;min-height:0;display:flex;flex-direction:column;padding:11px}
 html[data-fit="on"] body[data-page="lessons"] .passage{flex:1 1 0;min-height:85px;max-height:none;overflow:auto;padding:clamp(13px,1.8vh,22px);padding-right:45px}
 html[data-fit="on"] body[data-page="lessons"] .typing-input{flex:0 0 auto;min-height:62px;height:clamp(62px,8vh,90px);margin-top:8px}
 html[data-fit="on"] body[data-page="lessons"] .typing-hint{flex:0 0 auto}
 html[data-fit="on"] body[data-page="lessons"] .keyboard{flex:0 0 auto;padding:clamp(6px,.7vh,10px);gap:clamp(3px,.5vh,6px)}
 html[data-fit="on"] body[data-page="lessons"] .key-row{height:clamp(31px,3.9vh,47px);gap:clamp(3px,.34vw,6px)}
 html[data-fit="on"] body[data-page="lessons"] .typing-footer{flex:0 0 auto;min-height:68px;padding-top:9px;padding-bottom:4px}
 html[data-fit="on"] body[data-page="lessons"] .typing-footer .start-button{min-height:51px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-right-rail{height:100%;min-height:0;align-self:stretch}
 html[data-fit="on"] body[data-page="lessons"] .lesson-rail-box{flex:1 1 0;min-height:0;display:flex;flex-direction:column;padding:14px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-list{flex:1 1 0;min-height:0;max-height:none;overflow-y:auto;overscroll-behavior:contain}
 html[data-fit="on"] body[data-page="lessons"] .keyboard-is-hidden .typing-zone{flex:1 1 0}
 html[data-fit="on"] body[data-page="lessons"] .keyboard-is-hidden .typing-input{flex:1 1 0;min-height:100px;height:auto;margin-top:12px}
}
@media(min-width:1121px) and (min-height:690px) and (max-height:810px){
 html[data-fit="on"] body[data-page="lessons"] .page-heading{min-height:78px;padding:10px 15px;margin-bottom:11px}
 html[data-fit="on"] body[data-page="lessons"] .heading-icon{width:54px;height:54px;min-width:54px}
 html[data-fit="on"] body[data-page="lessons"] .heading-icon .ico{width:28px;height:28px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary .metric{min-height:75px;padding:9px}
 html[data-fit="on"] body[data-page="lessons"] .typing-metrics .metric{min-height:72px;padding:8px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary .metric-icon,html[data-fit="on"] body[data-page="lessons"] .typing-metrics .metric-icon{width:40px;height:40px;min-width:40px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary .metric strong,html[data-fit="on"] body[data-page="lessons"] .typing-metrics .metric strong{font-size:17px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-workspace-columns{--lesson-gap:8px}
 html[data-fit="on"] body[data-page="lessons"] .key-row{height:31px}
 html[data-fit="on"] body[data-page="lessons"] .typing-footer{min-height:56px}
 html[data-fit="on"] body[data-page="lessons"] .typing-footer .start-button{min-height:44px;font-size:15px}
}
@media(max-width:1120px){
 .lesson-rail-box .lesson-list{max-height:500px}
 .lesson-workspace-columns .typing-footer .start-button{min-width:0}
}
@media(max-width:800px){
 .lesson-workspace-columns .keyboard-is-hidden .typing-zone{min-height:320px}
 .lesson-workspace-columns .keyboard-is-hidden .typing-input{min-height:150px}
 .lesson-done-count{display:none}
}
@media(max-width:520px){
 .lesson-rail-tools{margin:2px 0 10px}
 .lesson-rail-box .lesson-list{max-height:480px}
 .lesson-workspace-columns .typing-footer .start-button{min-width:0}
}

/* v3.1: Lesson Studio automatically uses the normal browser window at 100% scale.
   At laptop browser heights of 600–689px, condense sections without losing the
   keyboard, footer controls, or the full-height scrollable lesson list. */
@media (min-width:1121px) and (min-height:600px) and (max-height:689px){
 html[data-fit="on"] body[data-page="lessons"] .page{display:flex;flex-direction:column;padding:10px 12px 10px}
 html[data-fit="on"] body[data-page="lessons"] .page-heading{flex:0 0 auto;min-height:62px;margin-bottom:7px;padding:7px 11px;gap:10px}
 html[data-fit="on"] body[data-page="lessons"] .heading-icon{width:42px;height:42px;min-width:42px;border-radius:9px}
 html[data-fit="on"] body[data-page="lessons"] .heading-icon .ico{width:24px;height:24px}
 html[data-fit="on"] body[data-page="lessons"] .heading-copy h1{font-size:21px}
 html[data-fit="on"] body[data-page="lessons"] .heading-copy p{font-size:11px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-workspace-columns{flex:1 1 0;min-height:0;align-items:stretch;gap:9px;--lesson-gap:6px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-primary{min-height:0;min-width:0;display:flex;flex-direction:column}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary{flex:0 0 auto;gap:7px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary .metric{padding:6px;min-height:55px;gap:7px;border-radius:9px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary .metric-icon{width:34px;height:34px;min-width:34px;border-radius:7px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary .metric-icon .ico{width:22px;height:22px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary .metric strong{font-size:14px;line-height:1.12}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary .metric small{font-size:9px;line-height:1.2}
 html[data-fit="on"] body[data-page="lessons"] .typing-workspace{flex:1 1 0;min-height:0;display:flex;flex-direction:column}
 html[data-fit="on"] body[data-page="lessons"] .typing-metrics{flex:0 0 auto;gap:7px}
 html[data-fit="on"] body[data-page="lessons"] .typing-metrics .metric{min-height:55px;padding:6px;gap:7px}
 html[data-fit="on"] body[data-page="lessons"] .typing-metrics .metric-icon{width:34px;height:34px;min-width:34px}
 html[data-fit="on"] body[data-page="lessons"] .typing-metrics .metric-icon .ico{width:21px;height:21px}
 html[data-fit="on"] body[data-page="lessons"] .typing-metrics .metric strong{font-size:15px}
 html[data-fit="on"] body[data-page="lessons"] .typing-metrics .metric small{font-size:9px}
 html[data-fit="on"] body[data-page="lessons"] .typing-zone{min-height:0;flex:1 1 0;display:flex;flex-direction:column;padding:7px}
 html[data-fit="on"] body[data-page="lessons"] .passage{min-height:60px;max-height:none;flex:1 1 0;overflow:auto;padding:10px 36px 8px 11px;font-size:clamp(16px,1.5vw,22px);line-height:1.55}
 html[data-fit="on"] body[data-page="lessons"] .typing-input{min-height:44px;height:clamp(44px,7vh,50px);margin-top:5px;font-size:13px;padding:6px 10px;flex:0 0 auto}
 html[data-fit="on"] body[data-page="lessons"] .typing-hint{font-size:9px;flex:0 0 auto}
 html[data-fit="on"] body[data-page="lessons"] .keyboard{flex:0 0 auto;padding:5px;gap:3px;border-radius:0 0 10px 10px}
 html[data-fit="on"] body[data-page="lessons"] .key-row{height:clamp(22px,3.6vh,26px);gap:3px}
 html[data-fit="on"] body[data-page="lessons"] .key{font-size:clamp(9px,.82vw,12px);border-radius:4px}
 html[data-fit="on"] body[data-page="lessons"] .typing-footer{flex:0 0 auto;min-height:43px;padding-top:5px;padding-bottom:2px;gap:6px}
 html[data-fit="on"] body[data-page="lessons"] .typing-footer .start-button{min-height:38px;font-size:13px;padding:6px 13px}
 html[data-fit="on"] body[data-page="lessons"] .typing-footer .outline-button{min-height:34px;padding:5px 9px;font-size:11px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-right-rail{min-height:0;height:100%;align-self:stretch}
 html[data-fit="on"] body[data-page="lessons"] .lesson-rail-box{min-height:0;flex:1 1 0;display:flex;flex-direction:column;padding:10px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-rail-head{margin-bottom:7px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-rail-tools{margin-bottom:6px}
 html[data-fit="on"] body[data-page="lessons"] .lesson-list{flex:1 1 0;min-height:0;max-height:none;overflow:auto;overscroll-behavior:contain}
 html[data-fit="on"] body[data-page="lessons"] .lesson-list-row{min-height:60px}
 html[data-fit="on"] body[data-page="lessons"] .keyboard-is-hidden .typing-zone{flex:1 1 0;min-height:0}
 html[data-fit="on"] body[data-page="lessons"] .keyboard-is-hidden .passage{flex:1 1 0;min-height:60px}
 html[data-fit="on"] body[data-page="lessons"] .keyboard-is-hidden .typing-input{flex:1 1 0;min-height:75px;height:auto}
}
@media (min-width:1121px) and (max-height:599px){
 html[data-fit="on"] body[data-page="lessons"] .page{overflow-y:auto}
}


/* ========================================================================
   v4.0 — UNIFIED DESKTOP WORKSPACE / NO DEAD SPACE
   One source of truth for desktop usable height. Header and left sidebar
   remain fixed; content uses the viewport and scrolls only where needed.
   ======================================================================== */
:root { --mtl-gap:clamp(8px, .75vh, 13px); --mtl-page-pad:clamp(10px,1.35vh,17px); }
html,body { width:100%; }
html[data-fit="on"] body {overflow:hidden}
html[data-fit="on"] .app-shell {width:100%; max-width:none; height:100dvh; min-height:0; margin:0;}
html[data-fit="on"] .sidebar {height:100dvh; min-height:0;}
html[data-fit="on"] .shell-main {height:100%;min-height:0;min-width:0;display:flex;flex-direction:column;}
html[data-fit="on"] .page {width:100%;max-width:none;flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;scrollbar-gutter:stable;}
html[data-fit="on"] .topbar {width:100%;min-width:0;flex-shrink:0;}
html[data-fit="on"] .sidebar-promo {flex:0 0 auto;}
/* Always give accessible title/tool positions even when sidebar collapses. */
.topbar .top-title {flex-shrink:0;}
.topbar .top-actions {flex-shrink:0;}
.topbar .search-box {min-width:110px;}
/* Buttons always show an accurate state. */
.fullscreen-control[aria-pressed="true"], .fit-control[aria-pressed="true"] {color:var(--blue);border-color:var(--blue);background:var(--soft);}
.fullscreen-control {width:38px;height:38px;border:1px solid var(--line);border-radius:10px;background:var(--panel2);}
.fullscreen-control:hover, .fit-control:hover {filter:brightness(1.12);border-color:var(--blue);}
html.is-fullscreen .app-shell,html.immersive-fallback .app-shell {width:100vw!important;height:100dvh!important;max-width:none!important;}
html.immersive-fallback body {overflow:hidden}
html.immersive-fallback .app-shell {position:fixed;inset:0;z-index:1000;}
html.immersive-fallback .sidebar {height:100dvh;}
html.immersive-fallback .shell-main {height:100dvh;}
html.immersive-fallback .page {flex:1;min-height:0;overflow:auto}
/* Fullscreen uses CSS even when a browser/embedding blocks the native API. */
html:fullscreen, html:fullscreen body {background:var(--bg);width:100%;height:100%;}
@media (min-width:1121px) and (min-height:600px) {
 html[data-fit="on"] .page {padding:var(--mtl-page-pad) clamp(11px,1.1vw,24px) var(--mtl-page-pad);display:flex;flex-direction:column;}
 html[data-fit="on"] .page>.page-heading {flex:0 0 auto;margin-bottom:var(--mtl-gap);min-height:clamp(66px,9.4vh,99px);padding:10px 15px;}
 html[data-fit="on"] .page>.page-heading .heading-icon {height:clamp(45px,5.7vh,65px);width:clamp(45px,5.7vh,65px);min-width:clamp(45px,5.7vh,65px);}
 html[data-fit="on"] .page>.page-heading .heading-icon .ico {width:clamp(25px,3.8vh,35px);height:clamp(25px,3.8vh,35px);}
 html[data-fit="on"] .page>.workspace-columns {flex:1 1 0;min-height:0;align-items:stretch;gap:var(--mtl-gap);}
 html[data-fit="on"] .workspace-columns>div:first-child {min-width:0;min-height:0;}
 html[data-fit="on"] .workspace-columns>.right-rail {height:100%;min-height:0;min-width:0;align-self:stretch;overflow:hidden;}
 html[data-fit="on"] .workspace-columns .rail-box {min-width:0;}
 /* Typing Test + Practice + Mock Test + Lessons share the same available height */
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .workspace-columns>div:first-child {display:flex;flex-direction:column;}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .typing-workspace {flex:1 1 0;min-height:0;display:flex;flex-direction:column;}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .typing-zone {flex:1 1 0;min-height:0;display:flex;flex-direction:column;padding:9px 10px;}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .passage {flex:1 1 0;min-height:42px;max-height:none;overflow:auto;font-size:clamp(16px,1.25vw,23px);line-height:1.52;padding:clamp(9px,1.2vh,15px) 42px clamp(7px,1vh,14px) 12px;}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .typing-input {resize:none;flex:0 0 auto;min-height:42px;height:clamp(46px,7.5vh,88px);margin-top:7px;}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .typing-hint {flex:0 0 auto;font-size:10px;}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .typing-metrics {flex:0 0 auto;gap:var(--mtl-gap);margin-bottom:var(--mtl-gap);}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .typing-metrics .metric {min-height:clamp(59px,8.1vh,88px);padding:clamp(6px,.9vh,11px);}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .typing-metrics .metric-icon {width:clamp(35px,4.5vh,51px);height:clamp(35px,4.5vh,51px);min-width:clamp(35px,4.5vh,51px);}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .typing-metrics .metric strong {font-size:clamp(15px,2.2vh,21px);}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .keyboard {flex:0 0 auto;padding:clamp(4px,.75vh,9px);gap:clamp(3px,.46vh,6px);}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .key-row {height:clamp(25px,3.8vh,39px);gap:clamp(3px,.35vw,6px);}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .typing-footer {flex:0 0 auto;min-height:clamp(46px,6.3vh,65px);padding:6px 4px 1px;}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .typing-footer .start-button {min-height:clamp(39px,5.3vh,55px);font-size:clamp(13px,1.25vw,18px);}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .tab-buttons {flex:0 0 auto;margin-bottom:var(--mtl-gap);}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .tab-buttons button {padding:clamp(8px,1.3vh,14px) 7px;}
 /* THE ROOT FIX: Hide keyboard => move editor DOWN, not leave an empty hole. */
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .keyboard-is-hidden .typing-zone {flex:1 1 0!important;min-height:0!important;display:flex;flex-direction:column;}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .keyboard-is-hidden .passage {flex:1 1 0;min-height:65px;max-height:none;}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .keyboard-is-hidden .typing-input {flex:1 1 0!important;height:auto!important;min-height:90px;max-height:none;}
 html[data-fit="on"] body[data-page="lessons"] .lesson-workspace-columns{flex:1 1 0;min-height:0;align-items:stretch;}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary{flex:0 0 auto;margin-bottom:var(--mtl-gap);gap:var(--mtl-gap)}
 html[data-fit="on"] body[data-page="lessons"] .lesson-summary .metric{min-height:clamp(59px,8.1vh,88px);padding:clamp(6px,.9vh,11px)}
 html[data-fit="on"] body[data-page="lessons"] .lesson-primary {height:100%;display:flex;flex-direction:column;min-height:0;}
 html[data-fit="on"] body[data-page="lessons"] .lesson-right-rail {display:flex;flex-direction:column;}
 html[data-fit="on"] body[data-page="lessons"] .lesson-rail-box{height:100%;flex:1 1 0;min-height:0;display:flex;flex-direction:column;padding:clamp(10px,1.2vh,15px);}
 html[data-fit="on"] body[data-page="lessons"] .lesson-list{flex:1 1 0;min-height:0;max-height:none;overflow-y:auto;}
 /* Non-lesson side panels have their own scroll containers, not dead areas. */
 html[data-fit="on"] body:is([data-page="typing-test"],[data-page="practice"],[data-page="mock-test"],[data-page="progress"],[data-page="leaderboard"],[data-page="settings"]) .right-rail {overflow-y:auto;scrollbar-width:thin;}
 html[data-fit="on"] body:is([data-page="progress"],[data-page="leaderboard"],[data-page="settings"]) .workspace-columns>div:first-child {overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;}
 html[data-fit="on"] body[data-page="leaderboard"] .workspace-columns>div:first-child {display:flex;flex-direction:column;}
 html[data-fit="on"] body[data-page="settings"] .workspace-columns>div:first-child {padding-bottom:3px;}
 html[data-fit="on"] body[data-page="progress"] .chart-panel {min-height:220px;}
 html[data-fit="on"] body[data-page="progress"] .line-chart{height:clamp(140px,22vh,205px)}
 html[data-fit="on"] body[data-page="progress"] .line-chart svg {height:100%;}
 html[data-fit="on"] body[data-page="dashboard"] .hero{flex:0 0 auto;height:clamp(288px,31vh,310px);min-height:288px;}
 html[data-fit="on"] body[data-page="dashboard"] .summary-grid {flex:0 0 auto;}
 html[data-fit="on"] body[data-page="dashboard"] .dashboard-panels{flex:1 0 auto;}
 html[data-fit="on"] body[data-page="dashboard"] .trust-strip{flex:0 0 auto;}
}
/* Browser windows under ~650 CSS px: scroll only inside the main view;
   never overlap controls or force unreadably small letters. */
@media(min-width:801px) and (max-height:650px){
 html[data-fit="on"] .page {overflow:auto;}
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .page>.workspace-columns{min-height:500px;}
}
@media(max-width:1120px){
 .topbar .top-actions{gap:5px}
 .topbar .top-title{min-width:0}
}
@media(max-width:800px){
 html[data-fit="on"] body{overflow:auto}
 html[data-fit="on"] .app-shell{min-height:100dvh;height:auto;overflow:visible}
 html[data-fit="on"] .shell-main{height:auto;min-height:100dvh}
 html[data-fit="on"] .page{overflow:visible;scrollbar-gutter:auto}
 html[data-fit="on"] .sidebar{height:100dvh;}
 .fullscreen-control {width:32px;height:32px;}
}

/* v5 SOFTWARE STUDIO — fullscreen-preserving in-document navigation + unified rails */
html[data-fit="on"] .app-shell{max-width:none;width:100%;}
.studio-menu{display:grid!important;place-items:center;border:1px solid var(--line);border-radius:10px;width:38px;height:38px;color:var(--muted);background:var(--panel2);transition:background .2s,transform .2s;}
.studio-menu:hover{background:var(--soft);color:var(--text);transform:translateY(-1px)}
.topbar .top-title{display:flex;align-items:center;gap:12px;min-width:0;white-space:nowrap}
.topbar .top-title .desktop-page-title{font-weight:800;}
.drawer-close{position:absolute;top:17px;right:10px;z-index:5;border:1px solid var(--line);border-radius:10px;background:var(--soft);color:var(--text);width:35px;height:35px;display:none;font-size:26px;line-height:1}
.sidebar-scrim{display:none;position:fixed;inset:0;background:rgba(0,8,25,.55);backdrop-filter:blur(3px);z-index:75;}
html.sidebar-drawer-open .sidebar-scrim{display:block;}
html.sidebar-drawer-open .sidebar{position:fixed!important;top:0;left:0;bottom:0;width:256px!important;min-width:256px!important;height:100dvh!important;transform:translateX(0)!important;z-index:90;box-shadow:20px 0 60px #0008;visibility:visible;overflow:visible;}
html.sidebar-drawer-open .sidebar .brand>span:last-child{display:block!important;}
html.sidebar-drawer-open .sidebar .side-link{justify-content:flex-start!important;gap:18px!important;padding:11px 16px!important;}
html.sidebar-drawer-open .sidebar .side-link span{display:inline!important;}
html.sidebar-drawer-open .sidebar .sidebar-promo{display:flex!important;}
html.sidebar-drawer-open .sidebar .brand{justify-content:flex-start;padding:12px 12px;}
html.sidebar-drawer-open .sidebar .side-nav{padding:15px 10px;}
html.sidebar-drawer-open .sidebar .brand-mark{width:51px;min-width:51px;height:51px;}
html.sidebar-drawer-open .drawer-close{display:block}
/* Normal dashboard/analytics have conventional sidebar. Workspace pages focus on their editor. */
html.sidebar-is-collapsed:not(.sidebar-drawer-open) .sidebar{width:0!important;min-width:0!important;border:0!important;visibility:hidden;transform:translateX(-100%);overflow:hidden;}
html.sidebar-is-collapsed .shell-main{min-width:0}
html.sidebar-is-collapsed:not(.sidebar-drawer-open) .sidebar .brand,html.sidebar-is-collapsed:not(.sidebar-drawer-open) .sidebar .side-nav{pointer-events:none;}
html.sidebar-is-collapsed:not(.sidebar-drawer-open) .sidebar .sidebar-promo{display:none!important}
html[data-fit="on"] .page{scrollbar-gutter:auto!important}
html[data-fit="on"] body:is([data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .workspace-columns>.right-rail,
html[data-fit="on"] body:is([data-page="progress"],[data-page="leaderboard"]) .workspace-columns>.right-rail{display:flex;flex-direction:column;overflow:hidden;min-height:0;height:100%;align-self:stretch;gap:10px;}
html[data-fit="on"] body:is([data-page="typing-test"],[data-page="practice"],[data-page="mock-test"],[data-page="progress"],[data-page="leaderboard"]) .right-rail>.rail-box{min-height:0;display:flex;flex-direction:column;overflow:hidden;}
html[data-fit="on"] body[data-page="typing-test"] .right-rail>.rail-box{flex:1 1 0;}
.history-rail-box .rail-subtitle{font-size:12px;margin:-3px 0 14px;color:var(--muted)}
.history-rail-list{min-height:0;flex:1 1 0;overflow-y:auto;scrollbar-width:thin;overscroll-behavior:contain;}
.history-empty{display:flex;min-height:100%;flex-direction:column;align-items:center;justify-content:center;gap:13px;text-align:center;color:var(--muted);padding:20px 14px;}
.history-empty svg{color:var(--blue);opacity:.7;}
.history-empty strong{color:var(--text);font-size:15px}
.history-empty span{max-width:215px;font-size:13px;line-height:1.6}
.history-view-all{display:flex;align-items:center;justify-content:center;gap:7px;min-height:39px;margin-top:12px;border-radius:9px;border:1px solid var(--line);color:var(--blue);background:var(--soft);font-size:12px;font-weight:700;}
html[data-fit="on"] body[data-page="practice"] .practice-rail>.rail-box:first-child{flex:1.4 1 0;}
html[data-fit="on"] body[data-page="practice"] .practice-rail>.rail-box:last-child{flex:1 1 0;}
html[data-fit="on"] body[data-page="mock-test"] .mock-rail>.rail-box:first-child{flex:1.2 1 0;}
html[data-fit="on"] body[data-page="mock-test"] .mock-rail>.rail-box:last-child{flex:1 1 0;}
html[data-fit="on"] .practice-rail .pick-list,html[data-fit="on"] .mock-rail .pick-list{overflow-y:auto;min-height:0;flex:1;scrollbar-width:thin;overscroll-behavior:contain;}
html[data-fit="on"] .practice-rail>.rail-box:last-child>.empty-text,html[data-fit="on"] .mock-rail>.rail-box:last-child>.info-list{flex:1;min-height:0;}
html[data-fit="on"] .practice-rail>.rail-box:last-child{overflow-y:auto;}
html[data-fit="on"] body[data-page="progress"] .progress-rail>.rail-box:first-child{flex:1.15 1 0;}
html[data-fit="on"] body[data-page="progress"] .progress-rail>.rail-box:nth-child(2){flex:.84 1 0;}
html[data-fit="on"] body[data-page="progress"] .progress-rail>.rail-box:last-child{flex:1 1 0;overflow-y:auto;}
html[data-fit="on"] body[data-page="leaderboard"] .leaderboard-rail>.rail-box:first-child{flex:1 1 0;}
html[data-fit="on"] body[data-page="leaderboard"] .leaderboard-rail>.rail-box:nth-child(2){flex:1.3 1 0;overflow-y:auto;}
html[data-fit="on"] body[data-page="leaderboard"] .leaderboard-rail>.rail-box:last-child{flex:.95 1 0;overflow-y:auto;}
html[data-fit="on"] body[data-page="leaderboard"] .leaderboard-table{flex:1 0 auto;min-height:210px}
html[data-fit="on"] body[data-page="leaderboard"] .podium{flex:0 0 auto;}
html[data-fit="on"] body[data-page="progress"] .progress-bottom{margin-bottom:0;}
html[data-fit="on"] .right-rail .rail-box h3{flex:0 0 auto;}
@media(min-width:1121px) and (min-height:600px){
 html[data-fit="on"] body:is([data-page="typing-test"],[data-page="practice"],[data-page="mock-test"],[data-page="progress"],[data-page="leaderboard"]) .workspace-columns{min-height:0;}
 html[data-fit="on"] body[data-page="typing-test"] .right-rail{overflow:hidden;}
}
@media(max-width:1120px){
 html.sidebar-is-collapsed:not(.sidebar-drawer-open) .sidebar{width:0!important;min-width:0!important;}
 html.sidebar-drawer-open .sidebar{width:250px!important;min-width:250px!important;}
}
@media(max-width:800px){
 .desktop-page-title{display:none!important}
 .studio-menu{width:35px;height:35px;}
 .topbar .top-title{flex:0 0 auto;}
 html[data-fit="on"] body:is([data-page="typing-test"],[data-page="practice"],[data-page="mock-test"],[data-page="progress"],[data-page="leaderboard"]) .workspace-columns>.right-rail{height:auto;overflow:visible;display:grid;grid-template-columns:1fr;}
 html[data-fit="on"] body:is([data-page="typing-test"],[data-page="practice"],[data-page="mock-test"],[data-page="progress"],[data-page="leaderboard"]) .right-rail>.rail-box{overflow:visible;}
 .history-rail-list{max-height:540px;}
}
@media(prefers-reduced-motion:no-preference){.sidebar{transition:width .24s ease,min-width .24s ease,transform .24s ease,visibility .24s}.sidebar-scrim{animation:mtlScrim .2s ease-out}@keyframes mtlScrim{from{opacity:0}to{opacity:1}}}

/* Drawer brand leaves a reserved close-button hit area. */
html.sidebar-drawer-open .sidebar .brand{padding:11px 47px 11px 10px!important;gap:8px;min-height:76px;white-space:nowrap;}
html.sidebar-drawer-open .sidebar .brand-mark{width:44px!important;min-width:44px!important;height:44px!important;}
html.sidebar-drawer-open .sidebar .brand strong{font-size:17px;}
html.sidebar-drawer-open .sidebar .brand small{font-size:7px;letter-spacing:0;}
html.sidebar-drawer-open .drawer-close{right:8px;top:18px;}
/* Stacked tablet rails must not inherit fixed viewport heights. */
@media(min-width:801px) and (max-width:1120px){
 html[data-fit="on"] body:is([data-page="typing-test"],[data-page="practice"],[data-page="mock-test"],[data-page="progress"],[data-page="leaderboard"]) .workspace-columns>.right-rail{height:auto;overflow:visible;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-self:auto;}
 html[data-fit="on"] body[data-page="typing-test"] .history-rail>.rail-box{grid-column:1/-1;min-height:240px;}
 html[data-fit="on"] body:is([data-page="practice"],[data-page="mock-test"],[data-page="progress"],[data-page="leaderboard"]) .right-rail>.rail-box{height:auto;min-height:170px;overflow:visible;}
}
html[data-fit="on"] .progress-rail>.rail-box,html[data-fit="on"] .leaderboard-rail>.rail-box,html[data-fit="on"] .mock-rail>.rail-box:last-child{overflow-y:auto;scrollbar-width:thin;}


/* =======================================================================
   v6 — keyboard polish / global bottom credits / public fullscreen fix
   ======================================================================= */
:root { --mtl-credit-h: 32px; }
/* The footer belongs to the flex column: never overlay input or buttons. */
.developer-footer {
  flex:0 0 var(--mtl-credit-h);min-height:var(--mtl-credit-h);width:100%;
  display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:0 14px;
  padding:5px 12px;background:var(--shell);color:var(--muted);
  border-top:1px solid var(--line2);font-size:11px;font-weight:500;line-height:1.35;
  text-align:center;letter-spacing:.06px;
}
.developer-footer strong { color:var(--text);font-weight:750; }
.developer-footer a { color:var(--blue);font-weight:750;white-space:nowrap; }
.developer-footer a:hover { text-decoration:underline; }
html[data-theme="light"] .developer-footer { background:#f7faff;border-top-color:#d7e4f6; }
/* In desktop software view, footer takes reserved height out of the content,
   not from outside the viewport. */
@media(min-width:801px){
  html[data-fit="on"] .guest .auth-main{display:flex;flex-direction:column;}
  html[data-fit="on"] .guest .auth-stage{flex:1 1 0;min-height:0;}
  html[data-fit="on"] .guest .developer-footer{position:relative;z-index:4;}
}
/* The keys are 10% taller than the previous responsive keyboard rows. */
.key-row{height:42.9px;min-height:0;flex:0 0 auto;}
.key {
  position:relative;border-radius:7px;
  background:linear-gradient(170deg,#344e6f 0%,#263c59 26%,#172a47 100%);
  border:1px solid #3a5678;
  border-bottom:1px solid #0a1930;
  box-shadow:inset 0 1px 0 rgba(219,239,255,.17),0 3px 0 #0a172b,0 5px 8px rgba(0,0,0,.24);
  transform:translateY(-1px);font-weight:650;
  text-shadow:0 1px 1px rgba(0,0,0,.16);
  transition:filter .12s ease,transform .12s ease,box-shadow .12s ease;
}
.key.home-left {
  background:linear-gradient(165deg,#158ef7 0%,#0c70d1 40%,#06469e 100%);
  border-color:#2aa6ff;box-shadow:inset 0 1px 0 #ffffff55,0 3px 0 #043579,0 5px 8px #0006;
}
.key.home-right {
  background:linear-gradient(165deg,#11b66b 0%,#008951 45%,#006038 100%);
  border-color:#28d083;box-shadow:inset 0 1px 0 #ffffff44,0 3px 0 #03462d,0 5px 8px #0006;
}
.key.pressed {
  filter:brightness(1.35);transform:translateY(2px)!important;
  box-shadow:inset 0 1px 3px #0006,0 0 14px rgba(54,169,255,.4)!important;
}
html[data-theme="light"] .key{
  color:#223d63;background:linear-gradient(165deg,#ffffff,#eef4fc 50%,#d8e5f6);
  border:1px solid #adbed7;border-bottom-color:#849eba;
  box-shadow:inset 0 1px 0 #fff,0 3px 0 #9ab1cf,0 5px 9px rgba(20,75,155,.13);
  text-shadow:none;
}
html[data-theme="light"] .key.home-left{
  background:linear-gradient(165deg,#168ef7,#096bc3 55%,#08559c);color:#fff;
  border-color:#258ff2;box-shadow:inset 0 1px 0 #ffffff50,0 3px 0 #05477e,0 5px 9px #0002;
}
html[data-theme="light"] .key.home-right{
  background:linear-gradient(165deg,#13af77,#008554 55%,#00633d);color:#fff;
  border-color:#13bd82;box-shadow:inset 0 1px 0 #ffffff50,0 3px 0 #035538,0 5px 9px #0002;
}
@media(min-width:1121px) and (min-height:600px){
 html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .key-row {
   height:calc(clamp(25px,3.8vh,39px) * 1.10);
 }
}
@media(max-width:1120px) and (min-width:521px){.key-row{height:43px;}}
@media(max-width:520px){
 .key-row{height:33px;}
 .key{border-radius:5px;font-size:9px;}
 .developer-footer{min-height:38px;flex-basis:auto;padding:7px 6px;font-size:10px;gap:2px 8px;}
}
@media(max-width:800px){
 .guest .developer-footer{position:relative;z-index:2;}
 .shell-main>.developer-footer{margin-top:auto;}
}


/* ======================================================================
   v7 PREMIUM TYPING STUDIO — purely visual, functional hooks unchanged.
   Bigger ergonomic raised keys, coherent components and light/dark parity.
   ====================================================================== */
:root{
  --premium-rim:rgba(112,178,255,.28);
  --premium-glow:rgba(30,127,255,.13);
  --premium-soft-shadow:0 10px 28px rgba(0,5,25,.20);
  --premium-key-border:#42638a;
  --premium-key-base:#0b1a32;
}
html[data-theme="light"]{
  --premium-rim:rgba(62,118,203,.25);
  --premium-glow:rgba(42,110,216,.08);
  --premium-soft-shadow:0 10px 28px rgba(32,77,145,.095);
  --premium-key-border:#b5c9e4;
  --premium-key-base:#91aaca;
}
/* A more restrained product-style shell; every element still uses theme vars. */
.topbar,.guest-toolbar{
  box-shadow:inset 0 -1px 0 var(--premium-rim);
  backdrop-filter:saturate(130%) blur(13px);
}
.page-heading{
  border-color:var(--premium-rim);
  border-radius:17px;
  box-shadow:inset 0 1px rgba(255,255,255,.12),var(--premium-soft-shadow);
}
.panel{
  border-color:var(--premium-rim);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.035),var(--premium-soft-shadow);
}
html[data-theme="light"] .panel{
  box-shadow:inset 0 1px 0 #fff, var(--premium-soft-shadow);
}
.brand-mark,.heading-icon,.metric-icon,.pick-icon,.promo-cup{
  box-shadow:inset 0 1px 0 rgba(255,255,255,.26),0 8px 22px var(--premium-glow);
}
.side-link{border:1px solid transparent;border-radius:12px}
.side-link.active{border-color:rgba(255,255,255,.18);box-shadow:0 7px 20px var(--premium-glow)}
.gradient-button{
  border:1px solid rgba(255,255,255,.24);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.24),0 9px 24px var(--premium-glow);
  border-radius:12px;
}
.outline-button,.ghost-button,.fit-control,.fullscreen-control,.studio-menu{
  border-color:var(--premium-rim);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.045);
}
.typing-zone{
  border:1px solid var(--premium-rim);
  border-radius:15px 15px 0 0;
  box-shadow:inset 0 1px rgba(255,255,255,.055), 0 10px 26px var(--premium-glow);
  background:linear-gradient(152deg,var(--panel2),var(--shell));
}
.typing-zone .passage{
  border-color:var(--premium-rim);
  border-radius:11px;
  background:rgba(0,10,28,.25);
}
.typing-zone .typing-input{
  border-color:var(--premium-rim);
  border-radius:10px;
  transition:border-color .15s,box-shadow .15s;
}
.typing-zone .typing-input:focus{
  border-color:var(--blue);
  outline:none;
  box-shadow:0 0 0 3px var(--premium-glow);
}
html[data-theme="light"] .typing-zone{
  background:linear-gradient(150deg,#fafdff,#ecf4ff);
}
html[data-theme="light"] .typing-zone .passage{background:rgba(255,255,255,.85)}

/* Keyboard enclosure: padded precision-machined tray with a light edge. */
.keyboard,
html[data-theme="light"] .keyboard{
  position:relative;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:14px 14px 17px;
  border:1px solid var(--premium-key-border);
  border-top-color:var(--premium-rim);
  border-radius:0 0 17px 17px;
  background:linear-gradient(155deg,#0c2748 0%,#061a33 54%,#081d38 100%);
  box-shadow:inset 0 2px 1px rgba(188,222,255,.075),
             inset 0 -2px 0 rgba(0,5,20,.42),
             0 14px 32px rgba(0,8,26,.28);
  isolation:isolate;
}
.keyboard::before{
  content:"";
  pointer-events:none;
  position:absolute;
  top:0;
  left:15px;
  right:15px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--blue),#a46aff,transparent);
  opacity:.7;
}
.key-row,
html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .key-row{
  height:54px;
  gap:8px;
  flex:0 0 auto;
}
.key,
html[data-theme="light"] .key{
  position:relative;
  min-width:0;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:center;
  height:100%;
  padding:0 3px;
  font-family:Inter,'Segoe UI',system-ui,sans-serif;
  font-size:clamp(12px,1.05vw,15px);
  font-weight:750;
  letter-spacing:.06px;
  border-radius:10px;
  border:1px solid #507095;
  border-bottom-color:#07172c;
  color:#f4f9ff;
  background:linear-gradient(165deg,#3b5b80 0%,#273f5f 44%,#192e4d 100%);
  box-shadow:inset 0 1px 0 rgba(230,243,255,.27),
             inset 0 -1px 1px rgba(1,10,29,.40),
             0 4px 0 var(--premium-key-base),
             0 7px 9px rgba(0,7,26,.28);
  text-shadow:0 1px 1px rgba(0,8,25,.4);
  transform:translateY(-2px);
  transition:filter .12s ease,transform .12s ease,box-shadow .12s ease;
}
.key.wide{
  background:linear-gradient(160deg,#305779,#234461 45%,#173552);
  font-size:clamp(10px,.88vw,13px);
}
.key.space{
  background:linear-gradient(168deg,#375777,#26435f 45%,#193452);
  font-size:12px;
  letter-spacing:2px;
}
.key.home-left,
html[data-theme="light"] .key.home-left{
  color:#fff;
  background:linear-gradient(160deg,#2bb7ff 0%,#087be4 42%,#064ba4 100%);
  border-color:#49baff;
  border-bottom-color:#044486;
  box-shadow:inset 0 1px rgba(255,255,255,.44),0 4px 0 #063f7f,0 7px 13px rgba(0,56,150,.33);
}
.key.home-right,
html[data-theme="light"] .key.home-right{
  color:#fff;
  background:linear-gradient(160deg,#21d8a0 0%,#079e69 42%,#056340 100%);
  border-color:#37dca4;
  border-bottom-color:#075a3d;
  box-shadow:inset 0 1px rgba(255,255,255,.40),0 4px 0 #07583b,0 7px 13px rgba(0,76,44,.3);
}
.key.pressed,.key.home-left.pressed,.key.home-right.pressed,
html[data-theme="light"] .key.pressed{
  filter:brightness(1.23);
  transform:translateY(2px)!important;
  box-shadow:inset 0 2px 5px rgba(0,15,40,.36),0 0 0 2px var(--blue),0 0 18px var(--premium-glow)!important;
}
html[data-theme="light"] .keyboard{
  background:linear-gradient(155deg,#e9f2ff 0%,#dce9f9 56%,#d2e1f5 100%);
  box-shadow:inset 0 2px 1px #ffffffc2,inset 0 -2px 0 #a9bbd5,0 12px 26px rgba(42,82,151,.11);
}
html[data-theme="light"] .key{
  color:#294469;
  text-shadow:none;
  border:1px solid #b5c8e2;
  border-bottom-color:#9fb4d1;
  background:linear-gradient(160deg,#fff 0%,#f2f7fe 46%,#dce9f9 100%);
  box-shadow:inset 0 1px 0 #fff,0 4px 0 #9eb3d0,0 7px 9px rgba(30,72,130,.13);
}
html[data-theme="light"] .key.wide,
html[data-theme="light"] .key.space{
  background:linear-gradient(160deg,#f5f9ff,#e7f0fd 55%,#d3e2f6);
}
.typing-footer{
  border-radius:0 0 14px 14px;
  gap:12px;
  padding:14px 8px 9px;
  background:transparent;
}
.typing-footer .start-button{
  font-weight:800;
  letter-spacing:.15px;
  border-radius:13px;
}
.typing-footer .outline-button{border-radius:11px}
/* Accessible focus without ever converting visual keys into clickable inputs. */
@media (prefers-reduced-motion:reduce){.key,.key.pressed{transition:none}}
@media (min-width:801px){
  html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .key-row{
    height:clamp(44px,5.8vh,56px);
    gap:clamp(5px,.50vw,9px);
  }
  html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .keyboard{
    padding:clamp(9px,1.35vh,15px) clamp(8px,1vw,15px) clamp(12px,1.5vh,17px);
    gap:clamp(5px,.85vh,9px);
  }
  /* Keyboard grows first; typing content remains scrollable at laptop heights. */
  html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .passage{
    min-height:90px;
  }
}
@media (min-width:801px) and (max-height:720px){
  html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .key-row{
    height:44px;
  }
  html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .page>.workspace-columns{
    min-height:520px;
  }
}
@media (max-width:800px){
  .keyboard,html[data-theme="light"] .keyboard{padding:11px 9px 14px;gap:6px}
  .key-row,
  html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .key-row{
    height:46px;
    gap:5px;
  }
  .key{border-radius:7px;font-size:clamp(9px,1.7vw,12px);}
  .key.wide{font-size:clamp(8px,1.35vw,11px)}
  .key.space{font-size:10px;letter-spacing:.6px}
  .typing-footer{gap:7px}
}
@media (max-width:520px){
  .keyboard,html[data-theme="light"] .keyboard{padding:9px 5px 11px;gap:5px}
  .key-row,
  html[data-fit="on"] body:is([data-page="lessons"],[data-page="typing-test"],[data-page="practice"],[data-page="mock-test"]) .key-row{
    height:39px;
    gap:3px;
  }
  .key{border-radius:6px;font-size:9px;padding:0 1px}
  .key.wide{font-size:7.5px}
  .key.space{font-size:8px;letter-spacing:0}
  .typing-footer .start-button{min-width:0}
}