:root{--brand:#4f46e5;--brand2:#06b6d4;--bg:#f3f5fb;--card:#fff;--ink:#0f172a;--mut:#64748b;--line:#e2e8f0;--ok:#16a34a;--warn:#d97706;--bad:#dc2626;--info:#2563eb;--r:14px;--sh:0 1px 2px rgba(15,23,42,.06),0 10px 28px rgba(15,23,42,.06)}
@media(prefers-color-scheme:dark){:root{--bg:#0b1020;--card:#121a30;--ink:#e8ecf8;--mut:#93a0bf;--line:#243050;--sh:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.35)}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:15px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);min-height:100vh;display:flex;flex-direction:column}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:24px;margin:0 0 4px}h2{font-size:18px;margin:0 0 12px}h3{font-size:15px;margin:0 0 8px}
.muted{color:var(--mut)}.small{font-size:13px}.right{margin-left:auto}.nowrap{white-space:nowrap}

/* top bar */
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:18px;padding:10px 20px;padding-top:calc(10px + env(safe-area-inset-top));background:rgba(255,255,255,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
@media(prefers-color-scheme:dark){.topbar{background:rgba(18,26,48,.85)}}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--ink);white-space:nowrap}.brand:hover{text-decoration:none}
.brand em{font-style:normal;font-weight:400;letter-spacing:3px;font-size:12px;color:var(--brand2);margin-left:2px}
.nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;flex:1}
.nav a{padding:7px 12px;border-radius:9px;color:var(--mut);font-weight:600;white-space:nowrap}
.nav a:hover{background:rgba(79,70,229,.08);text-decoration:none;color:var(--ink)}
.nav a.on{background:linear-gradient(135deg,var(--brand),#6366f1);color:#fff}
.me{display:flex;align-items:center;gap:8px;white-space:nowrap}
.who{color:var(--ink);font-weight:600}.who small{display:block;color:var(--mut);font-weight:400;font-size:11px;text-transform:uppercase;letter-spacing:1px;line-height:1}
.imp{background:#fef3c7;color:#92400e;text-align:center;padding:6px;font-size:13px}
@media(max-width:820px){.topbar{flex-wrap:wrap;gap:8px 12px}.nav{order:3;flex-basis:100%}.who small{display:none}.brand span{font-size:15px}}

.wrap{width:100%;max-width:1120px;margin:0 auto;padding:22px 18px 40px;flex:1}
.foot{text-align:center;color:var(--mut);font-size:12px;padding:16px}
.page-h{display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.page-h p{margin:0;color:var(--mut)}

/* cards, grid */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);padding:18px;margin-bottom:16px}
.grid{display:grid;gap:14px}.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.g4{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;box-shadow:var(--sh)}
.stat b{display:block;font-size:30px;line-height:1.1;background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:var(--mut);font-size:13px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:10px;border:1px solid transparent;background:linear-gradient(135deg,var(--brand),#6366f1);color:#fff;font:inherit;font-weight:600;cursor:pointer;text-decoration:none!important;transition:.15s transform,.15s box-shadow}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(79,70,229,.3)}
.btn-sm{padding:5px 11px;font-size:13px;border-radius:8px}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}.btn-ghost:hover{box-shadow:none;background:rgba(100,116,139,.1)}
.btn-ok{background:linear-gradient(135deg,#16a34a,#22c55e)}
.btn-danger{background:linear-gradient(135deg,#dc2626,#ef4444)}
.btn-big{padding:13px 24px;font-size:16px;border-radius:12px}
.btn[disabled]{opacity:.5;pointer-events:none}

/* forms */
label{display:block;font-weight:600;font-size:13px;margin:0 0 4px}
input,select,textarea{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:10px;padding:9px 12px;width:100%}
input:focus,select:focus{outline:2px solid rgba(79,70,229,.35);border-color:var(--brand)}
input[type=checkbox]{width:auto}
.frm{display:grid;gap:12px}.frm .two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:560px){.frm .two{grid-template-columns:1fr}}
.inline{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}.inline>div{flex:1;min-width:150px}
.inline form{display:inline}
.t12{display:inline-flex;gap:4px}.t12 select{width:auto;padding:9px 6px}
.days{display:flex;gap:6px;flex-wrap:wrap}.days label{display:flex;gap:6px;align-items:center;border:1px solid var(--line);border-radius:9px;padding:6px 11px;margin:0;cursor:pointer;font-weight:600}
.days input:checked+span{color:var(--brand)}

/* tables */
.tw{overflow-x:auto}
table.t{width:100%;border-collapse:collapse}
.t th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.6px;color:var(--mut);padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
.t td{padding:10px;border-bottom:1px solid var(--line);vertical-align:middle}
.t tr:last-child td{border-bottom:0}
.t tbody tr:hover{background:rgba(79,70,229,.04)}
.acts{display:flex;gap:6px;flex-wrap:wrap}.acts form{margin:0}

/* badges & alerts */
.badge{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:700;white-space:nowrap}
.b-ok{background:rgba(22,163,74,.14);color:var(--ok)}.b-warn{background:rgba(217,119,6,.15);color:var(--warn)}
.b-bad{background:rgba(220,38,38,.14);color:var(--bad)}.b-info{background:rgba(37,99,235,.13);color:var(--info)}
.b-mut{background:rgba(100,116,139,.15);color:var(--mut)}
.pulse{animation:pulse 1.4s infinite}@keyframes pulse{50%{opacity:.55}}
.alert{padding:11px 14px;border-radius:11px;margin-bottom:14px;border:1px solid;word-break:break-word}
.a-ok{background:rgba(22,163,74,.1);border-color:rgba(22,163,74,.35);color:var(--ok)}
.a-err{background:rgba(220,38,38,.1);border-color:rgba(220,38,38,.35);color:var(--bad)}
.a-warn{background:rgba(217,119,6,.1);border-color:rgba(217,119,6,.35);color:var(--warn)}
.a-info{background:rgba(37,99,235,.08);border-color:rgba(37,99,235,.3);color:var(--info)}
code,.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px}
.linkbox{display:flex;gap:6px;align-items:center}.linkbox input{font-size:12px}

/* class cards */
.cls{display:flex;gap:14px;align-items:center;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--card);margin-bottom:10px}
.cls .time{min-width:104px;font-weight:700}.cls .time small{display:block;color:var(--mut);font-weight:500}
.cls .grow{flex:1;min-width:0}.cls .grow b{display:block}
.cls.live{border-color:rgba(220,38,38,.5);background:linear-gradient(135deg,rgba(220,38,38,.07),transparent)}
.cls.open{border-color:rgba(22,163,74,.5);background:linear-gradient(135deg,rgba(22,163,74,.07),transparent)}
@media(max-width:560px){.cls{flex-wrap:wrap}.cls .time{min-width:0}}
.hero{border-radius:var(--r);padding:20px;color:#fff;background:linear-gradient(135deg,#4f46e5,#06b6d4);margin-bottom:16px;box-shadow:var(--sh)}
.hero h2{margin:0 0 4px}.hero p{margin:0;opacity:.9}

/* attendance */
.st-attended{background:rgba(22,163,74,.14);color:var(--ok)}.st-brief{background:rgba(217,119,6,.15);color:var(--warn)}
.st-clicked{background:rgba(37,99,235,.13);color:var(--info)}.st-absent{background:rgba(100,116,139,.15);color:var(--mut)}
.bar{height:6px;border-radius:6px;background:var(--line);overflow:hidden;min-width:70px}.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2))}

/* login / bare pages */
body.bare{background:radial-gradient(1200px 600px at 10% -10%,rgba(79,70,229,.25),transparent),radial-gradient(900px 500px at 100% 0%,rgba(6,182,212,.22),transparent),var(--bg)}
.auth{max-width:420px;margin:6vh auto 0}
.auth .logo{text-align:center;margin-bottom:18px}
.auth .logo svg{filter:drop-shadow(0 10px 20px rgba(79,70,229,.35))}
.auth .logo h1{margin:10px 0 0;font-size:28px;font-weight:800}
.auth .logo h1 em{display:block;font-style:normal;font-weight:400;letter-spacing:9px;font-size:13px;color:var(--brand2);margin-top:2px}

/* splash / loading screen */
#splash{position:fixed;inset:0;z-index:9999;display:grid;place-items:center;background:radial-gradient(circle at 30% 20%,#4f46e5,#0b1020 72%);color:#fff;transition:opacity .45s,visibility .45s}
#splash.hide{opacity:0;visibility:hidden}
.no-splash #splash{display:none}
.sp-in{text-align:center}
.sp-mark{animation:pop .85s cubic-bezier(.2,.9,.3,1.3) both;filter:drop-shadow(0 18px 40px rgba(6,182,212,.45))}
.sp-mark .hub,.sp-mark .n1,.sp-mark .n2{transform-box:fill-box;transform-origin:center;animation:beat 1.3s ease-in-out infinite}
.sp-mark .n2{animation-delay:.2s}.sp-mark .hub{animation-delay:.4s}
.sp-name{margin-top:18px;font-weight:800;font-size:30px;letter-spacing:.4px;animation:fade .8s .3s both}
.sp-name b{display:block;font-weight:300;letter-spacing:11px;font-size:14px;color:#67e8f9;margin-top:2px}
.sp-bar{width:190px;height:4px;border-radius:4px;background:rgba(255,255,255,.18);margin:26px auto 0;overflow:hidden}
.sp-bar i{display:block;height:100%;width:40%;background:linear-gradient(90deg,#67e8f9,#fff);border-radius:4px;animation:slide 1.1s ease-in-out infinite}
@keyframes pop{from{transform:scale(.55) rotate(-10deg);opacity:0}to{transform:none;opacity:1}}
@keyframes beat{50%{transform:scale(1.25)}}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes slide{0%{transform:translateX(-100%)}100%{transform:translateX(350%)}}

/* joining screen */
.joining{text-align:center;max-width:460px;margin:10vh auto 0}
.joining .spin{width:46px;height:46px;border-radius:50%;border:4px solid var(--line);border-top-color:var(--brand);margin:18px auto;animation:rot 1s linear infinite}
@keyframes rot{to{transform:rotate(360deg)}}

@media print{
  body{background:#fff;color:#000;display:block}
  .topbar,.imp,.foot,.noprint,#splash,.btn,.acts{display:none!important}
  .wrap{max-width:none;padding:0}.card{box-shadow:none;border:0;padding:0}
  .t th,.t td{border-bottom:1px solid #bbb;padding:5px 6px;font-size:12px}
  .badge{border:1px solid #888;background:none!important;color:#000!important}
  .printonly{display:block!important}
}
.printonly{display:none}