:root {
  --bg: #f4f4f5;
  --ink: #1c1917;
  --muted: #78716c;
  --card: #fff;
  --line: #e7e5e4;
  --accent: #0f766e;
  --danger: #b91c1c;
  --chip: #ecfdf5;
  --shadow: 0 8px 24px rgba(28, 25, 23, 0.06);
  --radius: 12px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);
  --side-w: 220px;
  --topbar-h: 52px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(1100px, calc(100% - 2rem)); margin: 0 auto; }
.muted { color: var(--muted); }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  padding: 0.5rem 0 1.2rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
}
.card h2, .card h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.toolbar {
  display: flex; gap: 0.55rem; flex-wrap: wrap; align-items: center;
  margin: 0.8rem 0 1rem;
}
input[type=text], input[type=password], input[type=search], input[type=number], select, textarea {
  width: 100%;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  background: #fff;
  font: inherit;
  font-size: 16px; /* avoid iOS zoom */
}
textarea { min-height: 160px; font-family: ui-monospace, Consolas, monospace; font-size: 0.9rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border: 0; border-radius: 10px; padding: 0.65rem 1rem;
  background: var(--accent); color: #fff; font-weight: 650; cursor: pointer;
  text-decoration: none; min-height: 42px;
}
.btn:hover { filter: brightness(1.05); text-decoration: none; }
.btn.secondary { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 0.4rem 0.7rem; font-size: 0.85rem; min-height: 36px; }
.play-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.play-table th, .play-table td {
  border-bottom: 1px solid var(--line);
  text-align: left; padding: 0.65rem 0.4rem; vertical-align: top;
}

/* Mobile-first list cards (replace wide tables on H5) */
.item-list {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.item-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow);
}
.item-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 0.45rem;
}
.item-card-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  word-break: break-word;
}
.item-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.55rem;
  margin: 0.35rem 0 0.55rem;
  color: var(--muted);
  font-size: 0.88rem;
}
.item-card-meta code,
.item-card-body code {
  font-size: 0.86rem;
  word-break: break-all;
  background: #f5f5f4;
  padding: 0.1rem 0.35rem;
  border-radius: 6px;
}
.item-card-body {
  color: var(--ink);
  font-size: 0.92rem;
  word-break: break-word;
}
.item-card-body + .item-card-body { margin-top: 0.35rem; }
.item-kv {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 0.25rem 0.5rem;
  font-size: 0.9rem;
  margin: 0.35rem 0;
}
.item-kv .k { color: var(--muted); }
.item-kv .v { word-break: break-word; }
.row-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line);
}
.row-actions .btn {
  flex: 1 1 0;
  min-height: 44px;
}
.row-actions form { flex: 1 1 0; display: flex; margin: 0; }
.row-actions form .btn { width: 100%; }
.tag {
  display: inline-flex;
  align-items: center;
  background: #f5f5f4;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.12rem 0.55rem;
  font-size: 0.78rem;
  color: var(--muted);
}
.tag.accent { background: var(--chip); color: #115e59; border-color: #a7f3d0; }
.grid a.card { color: inherit; text-decoration: none; }
.grid a.card:hover { border-color: #99f6e4; text-decoration: none; }
.grid a.card h3 { color: var(--ink); }

.chips { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.chip {
  background: var(--chip); color: #115e59;
  border-radius: 8px; padding: 0.12rem 0.4rem; font-size: 0.8rem; font-variant-numeric: tabular-nums;
}
.alert {
  padding: 0.75rem 0.9rem; border-radius: 10px; margin: 0.8rem 0;
  background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46;
}
.alert.error { background: #fef2f2; border-color: #fecaca; color: #991b1b; }
.num-grid {
  display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 0.35rem;
}
.num-grid label {
  display: flex; align-items: center; justify-content: center; gap: 0.15rem;
  border: 1px solid var(--line); border-radius: 8px; padding: 0.45rem 0;
  background: #fff; cursor: pointer; font-size: 0.85rem; min-height: 40px;
}
.num-grid input { accent-color: var(--accent); }
.login-box { width: min(400px, calc(100% - 2rem)); margin: 12vh auto; padding-bottom: var(--safe-b); }

/* Admin shell */
.admin-body { background: var(--bg); }
.admin-shell {
  display: grid;
  grid-template-columns: var(--side-w) 1fr;
  min-height: 100vh;
  min-height: 100dvh;
}
.admin-topbar {
  display: none;
  position: sticky; top: 0; z-index: 40;
  height: calc(var(--topbar-h) + var(--safe-t));
  padding: var(--safe-t) 0.75rem 0;
  align-items: center; gap: 0.6rem;
  background: #1c1917; color: #fafaf9;
}
.admin-top-title { flex: 1; font-weight: 700; font-size: 0.95rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.admin-top-link { color: #d6d3d1; font-size: 0.9rem; padding: 0.4rem; }
.nav-toggle {
  border: 0; background: #292524; color: #fff; width: 40px; height: 40px;
  border-radius: 10px; font-size: 1.2rem; cursor: pointer;
}
.admin-backdrop {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 45;
}
.admin-side {
  background: #1c1917; color: #e7e5e4; padding: 1.2rem 1rem;
  position: sticky; top: 0; height: 100vh; height: 100dvh; overflow-y: auto;
}
.admin-brand { font-weight: 700; margin-bottom: 1rem; padding: 0 0.4rem; }
.admin-nav a {
  display: block; color: #d6d3d1; padding: 0.7rem 0.7rem; border-radius: 10px; margin-bottom: 0.15rem;
  font-weight: 600;
}
.admin-nav a:hover { background: #292524; text-decoration: none; color: #fff; }
.admin-main {
  padding: 1.1rem 1.1rem calc(1.5rem + var(--safe-b));
  max-width: 1100px;
  width: 100%;
}
.admin-main h1 { margin: 0 0 0.4rem; font-size: clamp(1.35rem, 4vw, 1.75rem); }

@media (min-width: 900px) {
  .num-grid { grid-template-columns: repeat(10, minmax(0, 1fr)); }
  .item-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
  }
}
@media (max-width: 860px) {
  .admin-shell { grid-template-columns: 1fr; }
  .admin-topbar { display: flex; }
  .admin-side {
    position: fixed; left: 0; top: 0; bottom: 0; width: min(82vw, 280px);
    z-index: 50; transform: translateX(-105%); transition: transform .22s ease;
    padding-top: calc(0.8rem + var(--safe-t));
    box-shadow: 8px 0 30px rgba(0,0,0,.25);
  }
  body.nav-open .admin-side { transform: translateX(0); }
  body.nav-open .admin-backdrop { display: block; }
  .admin-main { padding: 0.9rem 0.85rem calc(1.4rem + var(--safe-b)); }
  .play-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .play-table th, .play-table td { white-space: nowrap; }
  .toolbar .btn { flex: 1 1 calc(50% - 0.3rem); }
  .grid { grid-template-columns: 1fr; }
  .item-kv { grid-template-columns: 3.8rem 1fr; }
}