:root{
  --primary:#F39C12; --primary-dark:#C7721A; --accent:#FFD98A; --bg:#FFF8EC;
  --ink:#3b2a14; --muted:#8a7155; --card:#ffffff; --line:#f1e0c2;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:linear-gradient(180deg,#FBE3B0 0%,var(--bg) 320px);
  color:var(--ink); min-height:100vh; -webkit-font-smoothing:antialiased;
  line-height:1.4;
}
.wrap{max-width:560px;margin:0 auto;padding:18px 16px 56px}
a{color:var(--primary-dark)}
.hi{display:block;font-size:0.82em;font-weight:400;color:var(--muted);margin-top:2px}

.hfi-header{text-align:center;padding:14px 0 10px}
.sun{width:52px;height:52px;border-radius:50%;margin:0 auto 10px;
  background:radial-gradient(circle at 50% 60%,#ffe29a,var(--primary) 60%,var(--primary-dark));
  box-shadow:0 0 0 8px rgba(243,156,18,.15),0 0 0 18px rgba(243,156,18,.08)}
.hfi-header h1{font-size:26px;margin:4px 0 2px;letter-spacing:.2px}
.hfi-header .org{color:var(--muted);font-size:14px;margin:0}

.today-card{background:var(--card);border:1px solid var(--line);border-radius:20px;
  padding:16px;box-shadow:0 8px 28px rgba(120,80,20,.1);margin-bottom:16px}
.badge{display:inline-block;background:var(--primary);color:#fff;border-radius:999px;
  padding:4px 14px;font-weight:700;font-size:14px;margin-bottom:8px}
.slot-line{color:var(--muted);font-size:14px;margin:0 0 12px}

.player{position:relative;border-radius:14px;overflow:hidden;background:#2b1d0c;aspect-ratio:16/9}
.player video{position:absolute;inset:0;width:100%;height:100%;border:0;background:#000;object-fit:cover}
.live-badge{position:absolute;top:10px;left:10px;background:#e3281c;color:#fff;font-weight:700;
  font-size:12px;padding:4px 10px;border-radius:999px;letter-spacing:.3px;z-index:2}
.join-btn{position:absolute;inset:0;width:100%;height:100%;border:0;cursor:pointer;z-index:3;
  background:rgba(20,12,4,.45);color:#fff;font-size:17px;font-weight:700;display:flex;
  flex-direction:column;align-items:center;justify-content:center;gap:4px}
.join-btn .hi{color:#f0dcbb}
.fallback{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:12px;color:#f6e2c2;text-align:center;padding:16px;
  background:linear-gradient(135deg,#4a3216,#2b1d0c)}
.lesson-title{margin-top:10px;font-size:15px}

.ended-card{text-align:center;padding:26px 10px}
.ended-emoji{font-size:40px;margin-bottom:6px}
.ended-card h2{font-size:19px;margin:4px 0 10px}
.countdown{font-variant-numeric:tabular-nums;font-weight:700;font-size:30px;color:var(--primary-dark)}

.signup-card{background:var(--card);border:1px solid var(--line);border-radius:20px;
  padding:16px;margin-bottom:16px}
.signup-card h3{margin:0 0 10px;font-size:18px}
.slots{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.slot-btn{border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 14px;
  font:600 15px inherit;color:var(--ink);cursor:pointer;min-height:44px}
.slot-btn.on{background:var(--primary);border-color:var(--primary);color:#fff}
#signupForm{display:flex;flex-direction:column;gap:10px}
#signupForm input{border:1px solid var(--line);border-radius:12px;padding:11px 12px;
  font:16px inherit;background:#fff;color:var(--ink);min-height:44px}
.checkbox{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.btn-primary{appearance:none;border:0;border-radius:999px;padding:12px 16px;font:700 16px inherit;
  cursor:pointer;background:var(--primary);color:#fff;min-height:46px}
.btn-primary.small{padding:9px 14px;font-size:14px;min-height:40px}
.btn-ghost{appearance:none;border:1px solid var(--line);border-radius:999px;padding:10px 14px;
  font:600 14px inherit;cursor:pointer;background:#fff;color:var(--primary-dark);
  text-decoration:none;display:inline-flex;flex-direction:column;align-items:center;min-height:44px;justify-content:center}
.btn-ghost.small{padding:8px 12px;font-size:13px;min-height:38px}
.daily-link{display:block;word-break:break-all;background:#FFF3DA;border-radius:10px;padding:10px;margin:8px 0;font-size:14px}
.success{color:#2f6b2a;font-weight:600}
.error{color:#a8311c;font-weight:600}
.hide{display:none!important}

.controls-card{background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:14px;margin-bottom:12px;display:flex;flex-wrap:wrap;gap:10px}
.panel{width:100%;background:#FFF8EC;border-radius:12px;padding:12px;margin-top:4px}
.panel input{border:1px solid var(--line);border-radius:10px;padding:8px 10px;width:120px;margin:0 8px 8px 0}
#actionMsg{width:100%;color:var(--muted);font-size:13px}
.tag{background:var(--accent);border-radius:6px;padding:1px 6px;font-size:11px}

.cal-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.small{font-size:13px;color:var(--muted)}

footer{text-align:center;color:var(--muted);font-size:13px;margin-top:26px}

@media (max-width:420px){
  .hfi-header h1{font-size:23px}
  .today-card,.signup-card{padding:14px}
}

.player.is-audio{aspect-ratio:auto;height:140px;display:flex;align-items:center;justify-content:center}
.audio-art{font-size:48px}
.player.is-audio audio{position:absolute;bottom:8px;left:8px;right:8px;width:calc(100% - 16px)}

.closing-exercise{margin-top:14px}
.closing-exercise h4{margin:0 0 8px;font-size:14px;color:var(--muted)}
.closing-exercise video{width:100%;border-radius:12px;background:#000}

.worksheet-card{margin-top:14px;background:#FFF3DA;border-radius:14px;padding:12px}
.worksheet-card h4{margin:0 0 8px;font-size:14px}
.worksheet-card .ws-text{font-size:14px;margin:0 0 8px}
.worksheet-card .checkbox{margin-top:6px}

.variant-picker{width:100%;margin-top:4px}
.variant-picker .slots{margin-bottom:0}

.modal-backdrop{position:fixed;inset:0;background:rgba(30,20,8,.55);display:flex;
  align-items:flex-end;justify-content:center;z-index:50;padding:0}
.modal-card{background:#fff;border-radius:20px 20px 0 0;padding:20px 18px 26px;width:100%;
  max-width:560px;box-shadow:0 -8px 30px rgba(0,0,0,.2)}
@media (min-width:600px){
  .modal-backdrop{align-items:center}
  .modal-card{border-radius:20px}
}
.modal-q{font-size:16px;font-weight:700;margin:0 0 14px}
.modal-row{display:flex;gap:10px;margin-bottom:4px}