:root{color-scheme:light;--ink:#1b2a4a;--muted:#5a6b88;--line:rgba(26,66,138,.14);--bg:#ffffff;--panel:#f0f5fc;--blue:#0397d6;--navy:#1a428a;--lime:#ff8a26}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 75% 0%,rgba(3,151,214,.08) 0,transparent 36%),radial-gradient(circle at 0 85%,rgba(26,66,138,.05) 0,transparent 42%),var(--bg);color:var(--ink);font-family:Tajawal,system-ui,sans-serif;min-height:100vh}
#siteLoader{position:fixed;inset:0;z-index:9999;display:grid;place-items:center;background:var(--bg);transition:opacity .5s ease,visibility .5s ease}
#siteLoader.hide{opacity:0;visibility:hidden;pointer-events:none}
.loader-scene{width:84px;height:84px;perspective:420px}
.loader-cube{width:100%;height:100%;position:relative;transform-style:preserve-3d;animation:loaderSpin 3.2s linear infinite}
.loader-cube span{position:absolute;inset:0;border-radius:14px;background:linear-gradient(135deg,rgba(36,171,226,.9),rgba(26,66,138,.65));border:1px solid rgba(36,171,226,.35);box-shadow:0 0 28px rgba(3,151,214,.3)}
.loader-cube span:nth-child(1){transform:translateZ(42px)}
.loader-cube span:nth-child(2){transform:rotateY(180deg) translateZ(42px)}
.loader-cube span:nth-child(3){transform:rotateY(90deg) translateZ(42px)}
.loader-cube span:nth-child(4){transform:rotateY(-90deg) translateZ(42px)}
.loader-cube span:nth-child(5){transform:rotateX(90deg) translateZ(42px)}
.loader-cube span:nth-child(6){transform:rotateX(-90deg) translateZ(42px)}
@keyframes loaderSpin{0%{transform:rotateX(-18deg) rotateY(0)}100%{transform:rotateX(-18deg) rotateY(360deg)}}
button,input,textarea,select{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.screen{max-width:1200px;margin:auto;padding:28px 26px 80px}.brand{display:inline-flex;gap:12px;align-items:center;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:24px;letter-spacing:-.06em}.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:linear-gradient(135deg,#24abe2,#1a428a);color:#ffffff;font-size:25px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:8px 0 28px;border-bottom:1px solid var(--line)}.top-actions{display:flex;gap:12px;align-items:center}.top-actions a,.text-btn{color:var(--muted);font-size:14px}.text-btn{border:0;background:none}.top-actions a:hover,.text-btn:hover{color:var(--ink)}.pill{border:1px solid rgba(3,151,214,.3);border-radius:100px;color:#0b7fb8;padding:7px 12px;font-size:12px;font-weight:700;background:rgba(3,151,214,.1)}.grid-login{display:grid;grid-template-columns:1.2fr .8fr;gap:70px;align-items:center;min-height:calc(100vh - 120px)}.hero-copy{max-width:650px}.eyebrow{color:#0b7fb8;font-size:13px;font-weight:800;letter-spacing:.09em;text-transform:uppercase}.hero-copy h1{font-size:clamp(52px,6vw,100px);line-height:.99;margin:24px 0;letter-spacing:-.04em}.hero-copy h1 em{font-style:normal;color:var(--blue)}.hero-copy p{font-size:19px;line-height:1.85;color:var(--muted);max-width:550px}.hero-stats{display:flex;gap:26px;margin-top:36px;border-top:1px solid var(--line);padding-top:24px}.hero-stats div{display:grid;gap:4px}.hero-stats strong{font-size:26px;color:var(--blue)}.hero-stats span{color:var(--muted);font-size:13px}.card{background:linear-gradient(145deg,#ffffff,#f3f8fd);border:1px solid var(--line);border-radius:24px;box-shadow:0 20px 60px rgba(14,80,120,.08)}.login-card{padding:38px}.login-card h2{font-size:32px;margin:0 0 7px}.subtle{color:var(--muted);line-height:1.7}.field{display:grid;gap:8px;margin:20px 0}.field label{font-size:14px;font-weight:700}.field input,.field textarea,.field select{width:100%;padding:15px 16px;background:#f8fbfd;border:1px solid var(--line);border-radius:12px;color:var(--ink);outline:none}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(3,151,214,.18)}.field input::placeholder,.field textarea::placeholder{color:#93a4b8}.password-wrap{position:relative}.password-wrap input{padding-inline-end:76px}.password-wrap button{position:absolute;inset-inline-end:8px;top:8px;padding:9px;border:0;background:none;color:var(--muted)}.button{border:0;background:linear-gradient(110deg,#0397d6,#24abe2);color:#ffffff;padding:15px 22px;border-radius:12px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;gap:9px;transition:transform .2s,filter .2s}.button:hover{transform:translateY(-2px);filter:brightness(1.06)}.button:disabled{opacity:.55;cursor:wait}.button.ghost{color:var(--ink);background:#eef6fb;border:1px solid var(--line)}.button.danger{background:#fde2e2;color:#b42318}.button.small{padding:9px 13px;font-size:13px}.login-card .button{width:100%;margin-top:12px}.help-line{text-align:center;color:var(--muted);font-size:13px;margin:20px 0 0}.help-line a{color:#0b7fb8}.message{display:none;padding:13px;border-radius:10px;margin:13px 0;color:#b42318;background:#fdeaea;border:1px solid rgba(220,38,38,.22)}.message.show{display:block}.message.ok{color:#166534;background:#e8f9ee;border-color:#bbe8cc}.page-title{margin:45px 0 12px;font-size:clamp(35px,4vw,57px);line-height:1.05}.page-intro{font-size:18px;color:var(--muted);line-height:1.7;max-width:700px}.dashboard-grid{display:grid;grid-template-columns:1.5fr .5fr;gap:24px;margin:32px 0}.feature-card{padding:32px;position:relative;overflow:hidden}.feature-card:before{content:'';position:absolute;width:240px;height:240px;border-radius:100%;background:#24abe2;filter:blur(90px);opacity:.3;inset-inline-end:-60px;top:-70px}.feature-card>*{position:relative}.feature-card h2{font-size:32px;margin:12px 0}.feature-card p{color:var(--muted);line-height:1.7}.metric{padding:30px;display:grid;align-content:center;gap:8px}.metric strong{font-size:48px;color:#cc6a10}.section-head{display:flex;justify-content:space-between;align-items:end;gap:14px;margin:36px 0 14px}.section-head h2{font-size:27px;margin:0}.lesson-list{display:grid;gap:10px}.lesson-row{display:grid;grid-template-columns:48px 1fr auto;align-items:center;gap:15px;padding:17px 21px;background:#f6fafc;border:1px solid var(--line);border-radius:14px}.lesson-row:hover{border-color:rgba(3,151,214,.45)}.lesson-number{background:#fff0e0;color:#cc6a10;border-radius:11px;width:42px;height:42px;display:grid;place-items:center;font-family:'Space Grotesk',sans-serif}.lesson-row h3{margin:0;font-size:17px}.lesson-row p{margin:4px 0 0;color:var(--muted);font-size:13px}.lesson-row .status{font-size:13px;color:#cc6a10}.player-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;margin-top:28px}.player-card{overflow:hidden}.video-frame{background:#0b1220;aspect-ratio:16/9;display:grid;place-items:center}.video-frame video{width:100%;height:100%;object-fit:contain}.video-placeholder{text-align:center;color:var(--muted);padding:40px}.video-placeholder strong{display:block;font-size:22px;color:var(--ink);margin:12px}.player-details{padding:27px}.player-details h1{font-size:30px;margin:0}.player-details p{color:var(--muted);line-height:1.8}.player-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:23px}.side-card{padding:22px}.side-card h2{font-size:20px;margin:0 0 14px}.side-card .lesson-row{grid-template-columns:32px 1fr;padding:12px;gap:10px}.side-card .lesson-number{width:32px;height:32px;font-size:11px}.side-card .lesson-row h3{font-size:13px}.studio-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:26px}.studio-card{padding:25px}.studio-card h2{margin:0;font-size:24px}.studio-card .button{margin-top:10px}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse;text-align:start}.data-table th,.data-table td{padding:14px 10px;border-bottom:1px solid var(--line);font-size:14px;text-align:start}.data-table th{color:var(--muted);font-size:12px}.data-table td .button{margin:0}.studio-lesson{border:1px solid var(--line);border-radius:14px;padding:16px;margin:10px 0}.studio-lesson header{display:flex;justify-content:space-between;gap:12px}.studio-lesson h3{margin:0}.studio-lesson p{margin:5px 0;color:var(--muted);font-size:13px}.studio-lesson .row-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.upload-progress{width:100%;height:8px;accent-color:#ff8a26}.footer-note{color:var(--muted);font-size:13px;margin-top:70px;border-top:1px solid var(--line);padding-top:24px}.loading{padding:80px;text-align:center;color:var(--muted)}
.msg-thread{display:grid;gap:10px;margin:14px 0;max-height:360px;overflow-y:auto}
.msg-bubble{padding:12px 16px;border-radius:14px;background:#eef5fa;border:1px solid var(--line);max-width:80%}
.msg-bubble.mine{background:#dff0fa;margin-inline-start:auto}
.msg-bubble p{margin:0;line-height:1.6;white-space:pre-line}
.msg-time{display:block;margin-top:6px;font-size:11px;color:var(--muted)}
@media(max-width:900px){.grid-login,.dashboard-grid,.player-grid,.studio-grid{grid-template-columns:1fr}.grid-login{gap:20px;padding-top:45px}.hero-copy h1{font-size:58px}.login-card{padding:27px}.screen{padding:18px 16px 60px}.topbar{padding-bottom:18px}.hero-stats{gap:18px}.player-grid{gap:16px}}
@media(max-width:540px){.hero-copy h1{font-size:45px}.hero-copy p{font-size:16px}.hero-stats strong{font-size:20px}.lesson-row{grid-template-columns:38px 1fr;gap:11px;padding:13px}.lesson-row .status{grid-column:2}.page-title{margin-top:30px}.top-actions .pill{display:none}.studio-card{padding:18px}.data-table td,.data-table th{min-width:110px}}
.lesson-editor{border-top:1px solid var(--line);margin-top:18px;padding-top:12px}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
.dashboard-grid .reveal:nth-child(2){transition-delay:.08s}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
.card{transition:transform .25s ease,box-shadow .25s ease}
.card:hover{transform:translateY(-3px);box-shadow:0 22px 50px rgba(14,100,140,.12)}
.lesson-row{transition:transform .2s ease,box-shadow .2s ease}
.lesson-row:hover{transform:translateX(-2px);box-shadow:0 10px 26px rgba(14,100,140,.1)}
.skel-card{height:120px;border-radius:14px;background:linear-gradient(90deg,#f1f6f9 25%,#e7eef3 37%,#f1f6f9 63%);background-size:400% 100%;animation:skelShine 1.4s ease infinite;border:1px solid var(--line)}
@keyframes skelShine{0%{background-position:100% 0}100%{background-position:0 0}}
@media(prefers-reduced-motion:reduce){.skel-card{animation:none}}
/* ===== UI improvements 2026-10-21: layered brand background (academy family) ===== */
body{background-image:linear-gradient(115deg,transparent 42%,rgba(3,151,214,.05) 48%,transparent 56%),linear-gradient(65deg,transparent 55%,rgba(26,66,138,.045) 63%,transparent 72%),radial-gradient(1000px 520px at 88% -8%,rgba(3,151,214,.13),transparent 62%),radial-gradient(860px 460px at 4% 10%,rgba(26,66,138,.11),transparent 60%),radial-gradient(700px 420px at 50% 110%,rgba(36,171,226,.1),transparent 62%)}
@media(max-width:900px){body{background-attachment:scroll}}