/* Smart Learning Apps — shared design system (dark glass, brand gradient) */
:root{--bg:#070b1f;--bg2:#0b1026;--panel:rgba(255,255,255,.055);--panel2:rgba(255,255,255,.09);--line:rgba(255,255,255,.12);--line2:rgba(255,255,255,.2);--tx:#eef2ff;--mut:#a5b0d0;--mut2:#7c87ab;--c1:#22d3ee;--c2:#7c3aed;--c3:#ec4899;--ok:#34d399;--warn:#fbbf24;--bad:#fb7185;--g:linear-gradient(100deg,#22d3ee,#7c3aed 55%,#ec4899);--r:18px;--sh:0 30px 80px -30px rgba(0,0,0,.7);--ease:cubic-bezier(.2,.8,.2,1)}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body.sla{font-family:"Plus Jakarta Sans",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--tx);line-height:1.55;min-height:100vh;overflow-x:hidden}
body.sla:before{content:"";position:fixed;inset:-20vmax;z-index:-2;background:radial-gradient(40vmax 30vmax at 12% 8%,rgba(34,211,238,.16),transparent 60%),radial-gradient(45vmax 35vmax at 92% 12%,rgba(124,58,237,.22),transparent 60%),radial-gradient(40vmax 35vmax at 70% 100%,rgba(236,72,153,.14),transparent 60%),var(--bg);animation:slaBg 24s ease-in-out infinite alternate}
body.sla:after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:26px 26px;mask-image:linear-gradient(#000,transparent 70%)}
@keyframes slaBg{to{transform:translate3d(-3vmax,2vmax,0) scale(1.05)}}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}
img{max-width:100%;display:block}
.gt{background:var(--g);-webkit-background-clip:text;background-clip:text;color:transparent}
.wrap{max-width:1320px;margin:0 auto;padding:0 28px}
/* top bar */
.sla-top{position:sticky;top:0;z-index:40;backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);background:rgba(7,11,31,.72);border-bottom:1px solid var(--line)}
.sla-top .wrap{display:flex;align-items:center;gap:14px;height:66px}
.sla-brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.3px;white-space:nowrap}
.sla-brand svg{width:34px;height:30px}
.sla-brand small{display:block;font-size:11px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;color:var(--mut)}
.sla-brand b{font-size:16px}
.sla-sep{width:1px;height:28px;background:var(--line)}
.sla-app{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;white-space:nowrap}
.sla-app i{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;font-style:normal;background:var(--g);box-shadow:0 8px 20px -6px rgba(124,58,237,.7);font-size:15px}
.sla-sp{flex:1}
.sla-chip{display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:var(--panel);font-size:12.5px;font-weight:700;color:var(--mut);white-space:nowrap}
.sla-chip .d{width:8px;height:8px;border-radius:50%;background:var(--warn);box-shadow:0 0 0 4px rgba(251,191,36,.15)}
.sla-chip.live .d{background:var(--ok);box-shadow:0 0 0 4px rgba(52,211,153,.18)}
.sla-guest{display:flex;align-items:center;gap:8px;padding:4px 12px 4px 4px;border-radius:999px;background:var(--panel2);border:1px solid var(--line);font-size:13px;font-weight:700;cursor:pointer}
.sla-guest img{width:30px;height:30px;border-radius:50%;object-fit:cover;border:2px solid rgba(255,255,255,.25)}
.sla-lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.sla-lang button{background:none;border:0;padding:6px 10px;font-size:12px;font-weight:800;color:var(--mut);cursor:pointer}
.sla-lang button.on{background:var(--panel2);color:#fff}
.sla-ham{display:none}
/* buttons */
.b{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:14px;border:1px solid var(--line);background:var(--panel2);font-weight:700;font-size:14.5px;cursor:pointer;transition:transform .25s var(--ease),box-shadow .25s,background .2s,border-color .2s;white-space:nowrap;user-select:none}
.b:hover{transform:translateY(-2px);border-color:var(--line2);background:rgba(255,255,255,.13)}
.b:active{transform:translateY(0) scale(.98)}
.b.p{background:var(--g);border:0;color:#fff;box-shadow:0 14px 34px -12px rgba(124,58,237,.8)}
.b.p:hover{box-shadow:0 18px 40px -12px rgba(236,72,153,.75)}
.b.s{padding:8px 14px;font-size:13px;border-radius:11px}
.b.ghost{background:transparent}
.b[disabled]{opacity:.45;pointer-events:none}
.b .spin{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
/* panels */
.pn{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.pn.pad{padding:22px}
.h-k{font-size:12px;font-weight:800;letter-spacing:2px;text-transform:uppercase;color:var(--c1)}
.h1{font-size:clamp(30px,4.4vw,54px);line-height:1.05;letter-spacing:-1.6px;font-weight:800}
.h2{font-size:clamp(22px,2.4vw,30px);line-height:1.15;letter-spacing:-.6px;font-weight:800}
.h3{font-size:17px;font-weight:800;letter-spacing:-.2px}
.mut{color:var(--mut)}.small{font-size:13px}
.lbl{display:block;font-size:12.5px;font-weight:800;color:var(--mut);margin:0 0 7px;letter-spacing:.3px}
.in,.ta,.sel{width:100%;background:rgba(5,8,24,.55);border:1px solid var(--line);border-radius:13px;padding:12px 14px;outline:none;transition:border-color .2s,box-shadow .2s}
.in:focus,.ta:focus,.sel:focus{border-color:rgba(34,211,238,.6);box-shadow:0 0 0 4px rgba(34,211,238,.12)}
.ta{resize:vertical;min-height:120px;line-height:1.5}
.sel option{background:#0b1026}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.grid{display:grid;gap:16px}
.tabs{display:inline-flex;padding:4px;border-radius:14px;background:rgba(5,8,24,.5);border:1px solid var(--line);gap:4px;flex-wrap:wrap}
.tabs button{border:0;background:none;padding:9px 14px;border-radius:10px;font-weight:700;font-size:13.5px;color:var(--mut);cursor:pointer;transition:.2s}
.tabs button.on{background:var(--panel2);color:#fff;box-shadow:inset 0 0 0 1px var(--line2)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chp{padding:8px 13px;border-radius:999px;border:1px solid var(--line);background:var(--panel);font-size:13px;font-weight:700;cursor:pointer;transition:.2s;color:var(--tx)}
.chp:hover{border-color:var(--line2)}
.chp.on{background:linear-gradient(100deg,rgba(34,211,238,.22),rgba(124,58,237,.3));border-color:rgba(167,139,250,.7)}
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:11.5px;font-weight:800;letter-spacing:.4px;background:rgba(124,58,237,.22);color:#d8ccff;border:1px solid rgba(167,139,250,.35)}
.pill.c{background:rgba(34,211,238,.14);color:#a5f3fc;border-color:rgba(34,211,238,.35)}
.pill.k{background:rgba(236,72,153,.16);color:#fbcfe8;border-color:rgba(236,72,153,.4)}
.pill.ok{background:rgba(52,211,153,.14);color:#a7f3d0;border-color:rgba(52,211,153,.4)}
/* hero band for each app */
.ah{position:relative;border-radius:26px;overflow:hidden;margin:26px 0 22px;min-height:230px;display:flex;align-items:flex-end;border:1px solid var(--line)}
.ah img.cv{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(1.04);animation:kb 18s ease-in-out infinite alternate}
@keyframes kb{to{transform:scale(1.12) translate(-1.5%,-1%)}}
.ah:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,11,31,.94) 0%,rgba(7,11,31,.72) 45%,rgba(7,11,31,.15) 100%),linear-gradient(0deg,rgba(7,11,31,.6),transparent 50%)}
.ah .ai{position:relative;z-index:2;padding:30px 34px;max-width:720px}
.ah p{color:#cdd5f3;margin-top:10px;font-size:16px;max-width:560px}
.steps{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.steps span{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;color:#dbe3ff;padding:6px 12px 6px 6px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid var(--line)}
.steps b{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--g);font-size:11px}
/* toast & modal */
.sla-toasts{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);z-index:90;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.sla-toast{pointer-events:auto;padding:12px 18px;border-radius:14px;background:rgba(15,20,48,.94);border:1px solid var(--line2);box-shadow:var(--sh);font-weight:700;font-size:14px;animation:tin .35s var(--ease)}
@keyframes tin{from{opacity:0;transform:translateY(12px) scale(.96)}}
.sla-modal{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:18px;background:rgba(3,6,18,.72);backdrop-filter:blur(8px);animation:fade .25s}
@keyframes fade{from{opacity:0}}
.sla-modal .box{width:min(560px,100%);max-height:92vh;overflow:auto;padding:26px;border-radius:24px;background:linear-gradient(180deg,#131a3d,#0b1026);border:1px solid var(--line2);box-shadow:0 40px 120px -20px rgba(0,0,0,.8);animation:pop .4s var(--ease)}
.sla-modal .box.wide{width:min(980px,100%)}
@keyframes pop{from{opacity:0;transform:translateY(16px) scale(.97)}}
.x-close{float:right;background:var(--panel2);border:1px solid var(--line);width:34px;height:34px;border-radius:50%;cursor:pointer;font-size:18px;line-height:1}
/* ai shimmer */
.shim{position:relative;overflow:hidden}
.shim:after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,transparent 30%,rgba(255,255,255,.12) 50%,transparent 70%);transform:translateX(-100%);animation:sh 1.4s infinite}
@keyframes sh{to{transform:translateX(100%)}}
.gen{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:16px;background:linear-gradient(100deg,rgba(34,211,238,.1),rgba(124,58,237,.16),rgba(236,72,153,.1));border:1px solid rgba(167,139,250,.35)}
.gen .orb{width:38px;height:38px;border-radius:50%;background:conic-gradient(from 0deg,#22d3ee,#7c3aed,#ec4899,#22d3ee);animation:spin 1.6s linear infinite;mask:radial-gradient(circle,transparent 42%,#000 44%)}
.gen .lines{flex:1}.gen .lines div{height:9px;border-radius:6px;background:rgba(255,255,255,.12);margin:6px 0}
.note{font-size:12.5px;color:var(--mut);padding:10px 12px;border-radius:12px;background:rgba(251,191,36,.07);border:1px dashed rgba(251,191,36,.35)}
.note b{color:#fde68a}
details.prm{font-size:13px;color:var(--mut)}
details.prm summary{cursor:pointer;font-weight:700;color:#c7d2fe}
details.prm pre{white-space:pre-wrap;margin-top:8px;padding:12px;border-radius:12px;background:rgba(0,0,0,.35);border:1px solid var(--line);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:#cbd5e1}
.fadein{animation:up .55s var(--ease) both}
@keyframes up{from{opacity:0;transform:translateY(14px)}}
.av{border-radius:50%;object-fit:cover;border:2px solid rgba(255,255,255,.22)}
.foot-mini{padding:34px 0 40px;color:var(--mut2);font-size:12.5px;text-align:center}
.foot-mini a{color:#c7d2fe}
.confetti{position:fixed;inset:0;pointer-events:none;z-index:95}
::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:10px}
@media (max-width:860px){
 .wrap{padding:0 16px}
 .sla-top .wrap{height:58px;gap:10px}
 .sla-brand small,.sla-brand b,.sla-sep,.sla-lang,.sla-chip .t{display:none}
 .sla-app{font-size:14px}
 .sla-guest span{display:none}.sla-guest{padding:3px}
 .ah{min-height:200px;border-radius:20px;margin:16px 0}
 .ah .ai{padding:22px 20px}
 .ah p{font-size:14.5px}
 .ah:after{background:linear-gradient(0deg,rgba(7,11,31,.96) 10%,rgba(7,11,31,.55) 70%,rgba(7,11,31,.35))}
 .pn.pad{padding:16px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}