:root {
  --bg: #000000;
  --panel: #101010;
  --panel-2: #1b1b1b;
  --line: #2a2a2a;
  --text: #f4f4f4;
  --muted: #a3a3a3;
  --accent: #e5262b;
  --accent-dark: #b81c20;
  --ok: #2fbf71;
  --bad: #ff6b6b;
  --radius: 14px;
  font-family: "Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.5; font-size: 16px; }
img { max-width: 100%; height: auto; }
a { color: var(--text); }
[hidden] { display: none !important; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; max-width: 880px; margin: 0 auto; }
.brand img { display: block; width: 150px; height: auto; }
.back { color: var(--muted); font-size: 14px; text-decoration: none; }
.back:hover { color: var(--text); }

main { max-width: 880px; margin: 0 auto; padding: 0 16px 48px; }
.hero { padding: 18px 0 8px; }
.hero h1 { margin: 0 0 8px; font-size: clamp(28px, 6vw, 40px); letter-spacing: 0.01em; font-weight: 800; }
.hero p { margin: 0; color: var(--muted); max-width: 60ch; }

.step, .summary, .done { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 16px; margin: 16px 0; }
.step h2, .summary h2 { margin: 0 0 14px; font-size: 18px; display: flex; align-items: center; gap: 10px; }
.n { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--text); color: var(--bg); font-size: 14px; font-weight: 800; }

.cards { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .cards { grid-template-columns: 1fr 1fr; } }
.card { position: relative; display: block; text-align: left; background: var(--panel-2); border: 2px solid var(--line); border-radius: var(--radius); padding: 16px; color: var(--text); cursor: pointer; font: inherit; width: 100%; }
.card:hover { border-color: #444; }
.card[aria-checked="true"] { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(229, 38, 43, 0.25); }
.card .t { display: block; font-weight: 800; letter-spacing: 0.06em; font-size: 15px; }
.card .p { display: block; font-size: 28px; font-weight: 800; margin: 6px 0 4px; }
.card .p small { font-size: 14px; font-weight: 600; color: var(--muted); }
.card .d { display: block; color: var(--muted); font-size: 14px; }

.row { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .row { grid-template-columns: 1fr 1fr; } }
.field { display: block; border: 0; padding: 0; margin: 0 0 12px; min-width: 0; }
.field > span, legend { display: block; font-size: 14px; color: var(--muted); margin-bottom: 6px; padding: 0; }
input[type="text"], input[type="email"], input[type="tel"], input[type="date"], select {
  width: 100%; min-height: 48px; padding: 10px 12px; background: var(--panel-2); color: var(--text);
  border: 1px solid var(--line); border-radius: 10px; font: inherit; color-scheme: dark;
}
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible, .card:focus-visible, .slot:focus-visible, .pl:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 2px;
}
input[aria-invalid="true"] { border-color: var(--bad); }

.slots { display: grid; grid-template-columns: repeat(auto-fill, minmax(84px, 1fr)); gap: 8px; margin-top: 10px; }
.slot { min-height: 48px; background: var(--panel-2); color: var(--text); border: 1px solid var(--line); border-radius: 10px; font: inherit; font-weight: 700; cursor: pointer; }
.slot:hover:not(:disabled) { border-color: var(--ok); }
.slot[aria-pressed="true"] { background: var(--text); color: var(--bg); border-color: var(--text); }
.slot:disabled { color: #666; text-decoration: line-through; cursor: not-allowed; background: transparent; }

.players { display: flex; gap: 8px; flex-wrap: wrap; }
.pl { width: 56px; height: 56px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel-2); color: var(--text); font: inherit; font-size: 20px; font-weight: 800; cursor: pointer; }
.pl[aria-pressed="true"] { background: var(--text); color: var(--bg); border-color: var(--text); }

.check { display: flex; gap: 12px; align-items: flex-start; margin: 12px 0 4px; cursor: pointer; }
.check input { width: 22px; height: 22px; margin-top: 2px; flex: none; accent-color: var(--accent); }
.check small { display: block; color: var(--muted); font-size: 13px; margin-top: 2px; }
.student { background: var(--panel-2); border: 1px solid var(--line); border-radius: 12px; padding: 12px; margin-bottom: 16px; }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.err { color: var(--bad); font-size: 13px; min-height: 0; margin: 4px 0 0; }
.err:empty { display: none; }
.muted { color: var(--muted); font-size: 14px; }
.notice { padding: 12px 14px; border-radius: 10px; margin: 12px 0; font-size: 15px; }
.notice-error { background: rgba(255, 107, 107, 0.12); border: 1px solid var(--bad); }

dl { margin: 0; }
dl > div { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
dl dt { color: var(--muted); }
dl dd { margin: 0; text-align: right; font-weight: 600; }
.total { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding-top: 14px; font-weight: 700; }
.total strong { font-size: 32px; font-weight: 800; }
.pay { margin: 6px 0 0; color: var(--muted); font-size: 14px; }

.cta { width: 100%; min-height: 60px; margin-top: 8px; border: 0; border-radius: 14px; background: var(--accent); color: #fff; font: inherit; font-size: 18px; font-weight: 800; letter-spacing: 0.02em; cursor: pointer; }
.cta:hover:not(:disabled) { background: var(--accent-dark); }
.cta:disabled { opacity: 0.6; cursor: progress; }
.ghost { display: inline-block; margin: 8px 8px 0 0; min-height: 44px; padding: 10px 16px; border-radius: 10px; border: 1px solid var(--line); background: transparent; color: var(--text); font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; }
.ghost:hover { border-color: #555; }
.danger { background: transparent; border-color: var(--bad); color: var(--bad); }

.done .badge { display: inline-block; background: var(--ok); color: #04210f; font-weight: 800; font-size: 13px; padding: 4px 10px; border-radius: 999px; }
.done h2 { margin: 12px 0 4px; font-size: 26px; }
.done .big { font-size: 18px; margin: 0 0 14px; }
.manage { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); }
.manage h3 { margin: 0 0 6px; font-size: 16px; }
.manage p { margin: 0 0 10px; color: var(--muted); font-size: 14px; }

.foot { max-width: 880px; margin: 0 auto; padding: 0 16px 32px; color: var(--muted); font-size: 13px; }

@media (prefers-reduced-motion: no-preference) {
  .card, .slot, .pl, .cta { transition: border-color 0.15s, background-color 0.15s, box-shadow 0.15s; }
}