/* Giao diện chỉ dành cho điện thoại: một cột, rộng tối đa 480px, căn giữa khi mở trên màn hình lớn. */
:root{
  --paper:#FAF5EC; --paper-2:#F1E8D8; --card:#FFFDF8;
  --ink:#1C140D; --ink-2:#5E5346; --line:#E2D6C2;
  --orange:#F28A00; --orange-soft:#FFE7C2; --red:#B93815; --grey:#9A8F80;
  --ok:#1F9D55;
  --f-disp:'Archivo',system-ui,sans-serif; --f-body:'Be Vietnam Pro',system-ui,sans-serif;
  --r:14px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#16100B; --paper-2:#21190F; --card:#241B12;
    --ink:#F7EEDF; --ink-2:#B9AB96; --line:#3A2E20;
    --orange:#FF9B1F; --orange-soft:#4A3010; --red:#FF7A52; --grey:#8A7E6E;
    --ok:#4CD08A;
  }
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;background:var(--paper-2)}
body{margin:0;background:var(--paper-2);color:var(--ink);font:400 16px/1.5 var(--f-body)}
.page{max-width:480px;margin:0 auto;min-height:100vh;background:var(--paper);padding-bottom:calc(110px + env(safe-area-inset-bottom,0px));box-shadow:0 0 0 1px var(--line)}
:focus-visible{outline:3px solid var(--orange);outline-offset:2px}
button{font:inherit}

.demo-tag{background:var(--orange);color:#1C140D;text-align:center;font:600 12.5px/1.3 var(--f-body);padding:7px 12px}
/* ---------- Đầu trang ---------- */
.hero{display:flex;align-items:center;gap:12px;background:#1C140D;color:#F7EEDF;padding:calc(14px + env(safe-area-inset-top,0px)) 18px 14px}
.logo{flex:none;border-radius:9px;background:#fff}
.hero h1{margin:0;font:900 22px/1.1 var(--f-disp);font-stretch:110%;letter-spacing:-.01em}

/* ---------- Khối chung ---------- */
.sec{padding:18px 18px;border-bottom:1px solid var(--line)}
.sec h2{margin:0 0 4px;font:900 22px/1.1 var(--f-disp);font-stretch:108%;letter-spacing:-.01em}
.lead{margin:0 0 14px;color:var(--ink-2);font-size:15px}
.note{margin:10px 0 0;font-size:13.5px;color:var(--ink-2)}
.note.bad{color:var(--red);font-weight:500}
.skel{height:70px;border-radius:var(--r);background:linear-gradient(90deg,var(--paper-2),var(--card),var(--paper-2));background-size:200% 100%;animation:sk 1.2s infinite;margin:8px 0}
@keyframes sk{to{background-position:-200% 0}}

/* ---------- 1. Lịch lớp ---------- */
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.poster{display:block;width:100%;padding:0;border:2px solid var(--ink);border-radius:var(--r);overflow:hidden;background:var(--card);cursor:zoom-in;margin-top:10px}
.poster img{display:block;width:100%;height:auto}
.zoom{position:fixed;inset:0;z-index:60;background:rgba(12,8,3,.92);overflow:auto;-webkit-overflow-scrolling:touch;padding:56px 0 24px}
.zoom-box{width:900px;max-width:none;margin:0 auto;padding:0 12px}
.zoom-box img{display:block;width:100%;height:auto;border-radius:10px}
.zoom-x{position:fixed;top:calc(8px + env(safe-area-inset-top,0px));right:10px;z-index:61;width:44px;height:44px;border:0;border-radius:50%;background:#F7EEDF;color:#1C140D;font-size:28px;line-height:1;cursor:pointer}

/* ---------- 2. Thông tin đăng ký ---------- */
.field{margin-top:10px}
.two{display:block}   /* họ tên ngay dưới số điện thoại, email dưới họ tên: mỗi ô một hàng đủ rộng */
#f-email.ro{overflow-wrap:anywhere}
.two .field{min-width:0}
.field label{display:block;margin-bottom:4px;font-weight:600;font-size:14px}
.field input{width:100%;padding:13px;border:2px solid var(--ink);border-radius:11px;background:var(--card);color:var(--ink);font:inherit;font-size:16px}
.field input[aria-invalid="true"]{border-color:var(--red)}
.ro{display:flex;align-items:center;padding:0 12px;border:2px dashed var(--line);border-radius:11px;background:var(--paper-2);color:var(--ink-2);font-size:15px;min-height:50px;line-height:1.25;overflow-wrap:anywhere}
.ro[data-state="found"]{border:2px solid var(--ink);background:var(--card);color:var(--ink);font-weight:600}
.ro[data-state="none"]{border-color:var(--red);color:var(--red);font-weight:600;font-size:13px;background:color-mix(in srgb,var(--red) 8%,var(--card))}
.ro[data-state="loading"]{color:var(--ink-2);font-style:italic}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden}

/* ---------- 3. Bảng chọn buổi ---------- */
.mx{display:grid;gap:5px;margin-top:10px}
#s-pick{padding-left:12px;padding-right:12px}
#s-pick h2{padding-left:6px}
.mx-sep{grid-column:1/-1;height:1px;margin:4px 0;background:var(--line)}
.mx-h{font:800 15px/1.2 var(--f-disp);font-stretch:105%;text-align:center;color:var(--ink);padding:2px 0 6px;white-space:nowrap}
.mx-d{align-self:stretch;display:flex;flex-direction:column;justify-content:center;padding:0 2px;line-height:1.1}
.mx-d b{font:900 22px/1 var(--f-disp);font-stretch:112%}
.mx-d span{font-size:11px;color:var(--ink-2);margin-top:2px;white-space:nowrap}
.mx-d.today b{color:var(--orange)}
.mx-d.today span{color:var(--orange);font-weight:600}
.cell{position:relative;min-height:74px;padding:8px 6px 8px 13px;display:flex;flex-direction:column;justify-content:space-between;gap:4px;text-align:left;color:var(--ink);background:var(--card);border:1.5px solid var(--line);border-radius:12px;cursor:pointer;overflow:hidden;transition:transform .12s,background .15s}
.cell::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--ok)}
.cell .gn{font-weight:600;font-size:12px;line-height:1.25;white-space:nowrap;letter-spacing:-.01em}
.cell .sl{font-size:12px;font-weight:600;color:var(--ink-2)}
.cell.low .sl{color:var(--red)}
.cell:active{transform:scale(.98)}
.cell[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.cell[aria-pressed="true"] .sl{color:var(--orange)}
.cell[aria-pressed="true"]::after{content:"✓";position:absolute;bottom:6px;right:6px;width:20px;height:20px;border-radius:50%;background:var(--orange);color:#1C140D;display:grid;place-items:center;font:700 12px/1 var(--f-body)}
.cell:disabled{cursor:not-allowed;color:var(--grey);background:repeating-linear-gradient(135deg,transparent 0 7px,color-mix(in srgb,var(--grey) 14%,transparent) 7px 14px)}
.cell:disabled::before{background:var(--grey);opacity:.5}
.cell:disabled .sl{color:var(--grey)}
.cell.shake{animation:shake .35s}
@keyframes shake{20%,60%{transform:translateX(-4px)}40%,80%{transform:translateX(4px)}}
.cell.none{min-height:74px;display:grid;place-items:center;border:1.5px dashed var(--line);border-radius:12px;color:var(--line);font-weight:700}
.cell.none::before{display:none}
.legend{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px 14px;font-size:12.5px;color:var(--ink-2)}
.legend li{display:flex;align-items:center;gap:6px}
.lg{width:14px;height:14px;border-radius:4px;border:1.5px solid var(--line);background:var(--card)}
.lg-full{background:repeating-linear-gradient(135deg,transparent 0 3px,color-mix(in srgb,var(--grey) 40%,transparent) 3px 6px)}

/* ---------- Thanh xác nhận ---------- */
.bar{position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--ink);color:var(--paper);padding:12px 0 calc(12px + env(safe-area-inset-bottom,0px))}
.bar-in{max-width:480px;margin:0 auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.bar-txt{display:flex;align-items:center;gap:6px;font-size:14.5px;white-space:nowrap}
.bar-txt b{font:900 26px/1 var(--f-disp)}
.bar-dots{display:flex;gap:4px;margin-left:8px}
.bar-dots i{width:8px;height:8px;border-radius:50%;border:1.5px solid var(--orange)}
.bar-dots i.on{background:var(--orange)}
.bar-msg{max-width:480px;margin:0 auto;padding:0 18px;font-size:13px;color:#FFB59B;min-height:0}
.bar-msg:not(:empty){padding-top:8px}
.go{padding:12px 18px;border:2px solid var(--orange);border-radius:12px;background:var(--orange);color:#1C140D;font:700 15.5px var(--f-body);cursor:pointer;white-space:nowrap}
.go:disabled{opacity:.6;cursor:wait}

/* ---------- Thành công ---------- */
.stamp{display:inline-grid;place-items:center;width:60px;height:60px;border-radius:50%;background:var(--orange);border:3px solid var(--ink);font-size:30px;font-weight:700;transform:rotate(-8deg)}
.done h2{margin:12px 0 2px;font-size:28px}
.who{margin:0 0 4px;color:var(--ink-2)}
.ticket{list-style:none;margin:14px 0;padding:0;display:grid;gap:10px}
.ticket li{display:grid;grid-template-columns:54px 1fr;gap:12px;align-items:center;padding:11px 13px;border:2px solid var(--ink);border-radius:var(--r);background:var(--card);border-left:8px solid var(--ok)}
.ticket .dn{font:900 30px/.9 var(--f-disp);font-stretch:118%;text-align:center}
.ticket .dn small{display:block;font:500 11px var(--f-body);color:var(--ink-2);margin-top:3px}
.ticket .tm{font:800 18px var(--f-disp);font-stretch:108%}
.ticket .gp{color:var(--ink-2);font-size:14px}
.again{margin-top:6px;padding:12px 20px;border:2px solid var(--ink);border-radius:12px;background:transparent;color:var(--ink);font:600 15.5px var(--f-body);cursor:pointer}

/* ---------- 4. Nội quy ---------- */
.rules{background:var(--paper-2);border-bottom:0}
.rules h2{font-size:20px;margin-bottom:12px}
.rules h3{margin:18px 0 6px;font:700 16px/1.3 var(--f-body)}
.rules ul{margin:0;padding-left:20px;color:var(--ink-2);font-size:14.5px}
.rules li{margin:5px 0}
.rules .closing{margin:16px 0 0;font-size:14.5px;color:var(--ink-2)}
.rules .copy{margin:18px 0 0;font-size:12px;color:var(--grey)}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
@media (max-width:380px){.cell .gn{font-size:10.5px}.cell{padding-left:11px}#s-pick{padding-left:8px;padding-right:8px}.mx{grid-template-columns:42px repeat(2,minmax(0,1fr))!important}.mx-h{font-size:13.5px}}