/* CloudLearn stylesheet - tokens, layout, components */
:root{--bg:#f4f7fb;--sf:#fff;--tx:#0f172a;--mu:#64748b;--bd:#e2e8f0;--ac:#0e7490;--ac2:#0891b2;--fl:#f59e0b;--ok:#16a34a;--on:#fff;--sh:0 1px 2px rgba(15,23,42,.05),0 10px 28px rgba(15,23,42,.07);--r:14px;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#0b1220;--sf:#111a2c;--tx:#e5ecf6;--mu:#8fa0b8;--bd:#22304a;--ac:#22b8d6;--ac2:#38d3ee;--fl:#fbbf24;--ok:#4ade80;--on:#04202a;--sh:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.35);color-scheme:dark}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--tx);font:400 15px/1.6 Manrope,system-ui,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em}h2{font-size:1.35rem;margin:32px 0 14px}h3{font-size:1.05rem;margin:26px 0 10px}
a{color:var(--ac)}
/* header */
header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--sf) 82%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--bd)}
.bar-in{max-width:1120px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.br{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;letter-spacing:-.02em;cursor:pointer}
.logo{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--ac),var(--ac2));color:var(--on);font-size:.8rem}
.user{display:flex;align-items:center;gap:10px}.ut{display:flex;flex-direction:column;line-height:1.2}.ut small{color:var(--mu);text-transform:capitalize}
.av{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--ac);color:var(--on);font-weight:800}
main{max-width:1120px;margin:0 auto;padding:8px 20px 24px}
footer{max-width:1120px;margin:0 auto;padding:18px 20px 36px;color:var(--mu);font-size:.82rem;text-align:center}
/* hero */
.hero{margin-top:20px;padding:30px 32px;border-radius:20px;color:#fff;background:linear-gradient(120deg,#0b2a45,#0e7490 70%,#22b8d6);box-shadow:var(--sh)}
.hero h1{margin:0 0 6px;font-size:1.8rem}.hero p{margin:0;opacity:.88;max-width:640px}
/* grid + cards */
.g{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.card{background:var(--sf);border:1px solid var(--bd);border-radius:var(--r);padding:18px;margin-bottom:14px;box-shadow:var(--sh)}
.g .card{margin:0}.card p{margin:6px 0}
.course{padding:0;overflow:hidden;display:flex;flex-direction:column;transition:transform .18s,box-shadow .18s}
.course:hover{transform:translateY(-3px)}
.thumb{height:104px;display:flex;align-items:flex-end;justify-content:space-between;padding:12px 14px;color:#fff;font-size:2rem}
.thumb em{font:700 .72rem Manrope,sans-serif;text-transform:uppercase;letter-spacing:.08em;background:rgba(255,255,255,.22);padding:3px 10px;border-radius:20px}
.cb{padding:16px;display:flex;flex-direction:column;flex:1}.cb h3{margin:0 0 2px}.cb .ds{flex:1;color:var(--mu);font-size:.9rem}
.stat b{font-size:2.1rem;letter-spacing:-.03em;color:var(--ac)}
.row{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--bd)}.row:last-child{border:0}
.mu{color:var(--mu)}.hint{color:var(--mu);font-size:.85rem}
.chip{font-size:.78rem;font-weight:600;color:var(--ac);background:color-mix(in srgb,var(--ac) 12%,transparent);border-radius:20px;padding:2px 10px}
.ok{color:var(--ok);font-weight:700}.fl{color:var(--fl);font-weight:700}
/* buttons */
button{font:700 .88rem Manrope,system-ui,sans-serif;background:linear-gradient(135deg,var(--ac),var(--ac2));color:var(--on);border:0;border-radius:10px;padding:9px 16px;cursor:pointer;transition:filter .15s,transform .1s}
button:hover{filter:brightness(1.08)}button:active{transform:scale(.97)}
button.s{background:var(--sf);color:var(--ac);border:1px solid var(--bd)}button.s:hover{border-color:var(--ac)}
button.ln{background:none;color:var(--ac);padding:14px 0 0}button.wide{width:100%;margin-top:6px;padding:12px}
:focus-visible{outline:2px solid var(--fl);outline-offset:2px}
/* forms */
label{display:block;font-weight:600;font-size:.84rem;margin:12px 0 5px}
input,select,textarea{display:block;width:100%;margin:0 0 4px;padding:11px 12px;border:1px solid var(--bd);border-radius:10px;background:var(--bg);color:var(--tx);font:inherit}
input:focus,select:focus,textarea:focus{border-color:var(--ac);outline:0;box-shadow:0 0 0 3px color-mix(in srgb,var(--ac) 20%,transparent)}
textarea{min-height:84px;resize:vertical}.card input,.card select,.card textarea{margin-bottom:10px}
/* progress */
.bar{height:8px;background:var(--bd);border-radius:8px;position:relative;margin:10px 0}
.bar i{display:block;height:100%;border-radius:8px;background:linear-gradient(90deg,var(--ok),var(--ac2))}
.bar b{position:absolute;top:-4px;width:4px;height:16px;border-radius:3px;background:var(--fl)}
/* tabs, table, video */
.tabs,.seg{display:inline-flex;gap:4px;padding:4px;background:var(--bd);border-radius:12px;margin:0 0 14px}
.tabs button.s,.seg button.s{border:0;background:transparent}.tabs button.s.on,.seg button.s.on{background:var(--sf);box-shadow:var(--sh)}
video{width:100%;max-height:520px;border-radius:12px;background:#000}
table{width:100%;border-collapse:collapse;font-size:.9rem}th{font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;color:var(--mu)}
th,td{text-align:left;padding:11px 10px;border-bottom:1px solid var(--bd);vertical-align:top}tr:hover td{background:color-mix(in srgb,var(--ac) 5%,transparent)}
ul{padding-left:20px}li{margin:4px 0}
/* auth */
.auth-wrap{min-height:100vh;display:grid;grid-template-columns:1.1fr 1fr}
.auth-hero{display:flex;flex-direction:column;justify-content:center;gap:18px;padding:48px;color:#fff;background:radial-gradient(circle at 20% 10%,#22b8d6 0,transparent 45%),linear-gradient(150deg,#0b2a45,#0e7490)}
.auth-hero h1{font-size:2.3rem;margin:10px 0}.auth-hero ul{list-style:none;padding:0}.auth-hero li{margin:12px 0;font-size:1.02rem;opacity:.92}
.auth-form{align-self:center;width:100%;max-width:420px;margin:0 auto;padding:32px 24px}.auth-form h2{margin-top:6px}
/* toast */
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--tx);color:var(--bg);padding:11px 18px;border-radius:10px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:50;box-shadow:var(--sh)}
@media (max-width:820px){.auth-wrap{grid-template-columns:1fr}.auth-hero{padding:32px 24px}.auth-hero h1{font-size:1.6rem}.ut{display:none}.hero{padding:22px}.hero h1{font-size:1.4rem}}