:root {
  --bg: #031028;
  --panel: #0a1d3d;
  --line: #1b3c6a;
  --text: #e8f4ff;
  --muted: #8eb1d7;
  --accent: #19c6ff;
  --good: #24e3a7;
  --bad: #ff7a8a;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 15% 10%, #12366e 0%, #04122d 40%, #020916 100%);
  color: var(--text);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

.page { max-width: 1180px; margin: 0 auto; padding: 24px 16px 40px; }
.card { background: linear-gradient(180deg, rgba(10,29,61,0.96), rgba(7,19,43,0.96)); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.center { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(420px, 100%); }
h1, h2, h3, p { margin: 0; }
.title { font-size: 32px; font-weight: 800; }
.subtitle { margin-top: 6px; color: var(--muted); font-size: 14px; }
.form { margin-top: 18px; display: grid; gap: 10px; }
.field { width: 100%; border: 1px solid #265288; border-radius: 10px; background: #020d24; color: var(--text); padding: 11px 12px; font-size: 15px; }
.btn { border: 1px solid transparent; border-radius: 10px; background: linear-gradient(180deg, #22d9ff, #10b8e8); color: #022537; font-weight: 700; font-size: 15px; padding: 10px 14px; cursor: pointer; }
.btn.secondary { background: #10274d; color: #ddf6ff; border-color: #335f93; }
.btn.small { padding: 6px 10px; font-size: 13px; }
.btn:disabled { opacity: 0.65; cursor: not-allowed; }
.error { margin-top: 8px; color: var(--bad); font-size: 13px; }
.notice { margin-top: 8px; color: var(--good); font-size: 13px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 16px; }
.meta { color: var(--muted); font-size: 13px; }
.home-grid { margin-top: 16px; display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px; }
.game-card { cursor: pointer; border: 1px solid #2a588f; border-radius: 14px; overflow: hidden; background: #061633; padding: 0; color: inherit; text-align: left; }
.game-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
.game-body { padding: 12px; }
.game-name { font-size: 18px; font-weight: 800; }
.game-desc { margin-top: 6px; color: var(--muted); font-size: 13px; }
.play-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
.board-wrap { border: 1px solid #2a588f; background: #03112b; border-radius: 12px; overflow: hidden; }
.board { display: grid; grid-template-columns: repeat(5, minmax(58px, 1fr)); gap: 2px; background: #1f4f7d; padding: 2px; }
.cell { min-height: 94px; background: #0a2f55; display: grid; place-items: center; border: 1px solid rgba(255,255,255,0.12); }
.cell img { width: 100%; height: 100%; object-fit: cover; }
.cell.win { border-color: #ff3f4d; box-shadow: inset 0 0 0 2px rgba(255, 58, 74, 0.8); }
.panel-row { display: grid; grid-template-columns: repeat(4, minmax(120px, 1fr)); gap: 10px; }
.info { border: 1px solid #244a78; border-radius: 10px; background: #031029; padding: 10px; }
.info .k { color: var(--muted); font-size: 12px; }
.info .v { margin-top: 4px; font-size: 21px; font-weight: 700; }
.info .v.good { color: var(--good); }
.info .v.bad { color: var(--bad); }
.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; }
.control { min-width: 170px; display: grid; gap: 6px; }
.control label { color: var(--muted); font-size: 12px; }
.raw { margin-top: 8px; border: 1px solid #244a78; background: #020a1a; border-radius: 10px; padding: 10px; max-height: 230px; overflow: auto; font-size: 12px; color: #b8d8ff; }

@media (max-width: 920px) {
  .panel-row { grid-template-columns: repeat(2, minmax(120px, 1fr)); }
  .cell { min-height: 72px; }
}