/* School Apps — Hallmark Design System
   Shared tokens + components for portal, duty, schedule, and admin pages.
   Radio widget has its own namespace (.school-radio) in school-radio.css.

   · Hallmark · macrostructure: schema-library · Theme: Studio-Clean (OKLCH teal-cyan)
   · Per-page stamps: portal = Marquee-Hero (statement), duty = Stat-Led (metric-first),
     schedule = Workbench (toolbar + live status). Divergent structures on purpose. */

/* ── Tokens (OKLCH) ── */
:root {
  color-scheme: light;

  /* Paper scale */
  --color-paper-0: oklch(98.5% 0.003 250);   /* page background */
  --color-paper-1: oklch(100% 0 0);           /* surface / card */
  --color-paper-2: oklch(96.5% 0.004 250);   /* surface-alt / hover */
  --color-paper-3: oklch(92% 0.006 250);     /* pressed / active */

  /* Ink scale */
  --color-ink-0: oklch(18% 0.01 250);        /* primary text */
  --color-ink-1: oklch(42% 0.015 250);       /* secondary */
  --color-ink-2: oklch(58% 0.012 250);       /* tertiary / placeholder */
  --color-ink-3: oklch(72% 0.01 250);        /* disabled / faint */

  /* Accent (teal-cyan anchor) */
  --color-accent: oklch(48% 0.16 195);       /* primary action */
  --color-accent-strong: oklch(42% 0.18 195); /* hover */
  --color-accent-subtle: oklch(88% 0.06 195); /* surface tint */
  --color-accent-border: oklch(78% 0.1 195);  /* focus ring / border */

  /* Semantic accents */
  --color-success: oklch(58% 0.18 145);
  --color-success-subtle: oklch(88% 0.06 145);
  --color-warning: oklch(68% 0.18 85);
  --color-warning-subtle: oklch(92% 0.06 85);
  --color-danger: oklch(55% 0.22 25);
  --color-danger-subtle: oklch(90% 0.06 25);

  /* Border */
  --color-border: oklch(88% 0.004 250);
  --color-border-strong: oklch(82% 0.006 250);

  /* Focus */
  --color-focus: var(--color-accent);
  --color-focus-ring: var(--color-accent-subtle);

  /* Radius */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Shadow */
  --shadow-sm: 0 1px 2px oklch(18% 0.01 250 / 0.04), 0 1px 3px oklch(18% 0.01 250 / 0.03);
  --shadow: 0 2px 8px oklch(18% 0.01 250 / 0.06), 0 1px 2px oklch(18% 0.01 250 / 0.04);
  --shadow-lg: 0 8px 24px oklch(18% 0.01 250 / 0.1), 0 2px 6px oklch(18% 0.01 250 / 0.06);

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans Thai', -apple-system, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Menlo', 'Consolas', monospace;

  /* Type scale */
  --text-xs: clamp(11px, 0.7rem, 12px);
  --text-sm: clamp(12px, 0.8rem, 13px);
  --text-base: clamp(14px, 0.9rem, 15px);
  --text-lg: clamp(16px, 1.05rem, 17px);
  --text-xl: clamp(20px, 1.3rem, 22px);
  --text-2xl: clamp(26px, 1.7rem, 30px);
  --text-3xl: clamp(34px, 2.2rem, 40px);
  --text-4xl: clamp(44px, 3rem, 52px);
  --text-5xl: clamp(56px, 4rem, 72px);
  --text-6xl: clamp(72px, 5.5rem, 96px);

  /* Display faces */
  --font-display: 'Inter', 'Noto Sans Thai', -apple-system, system-ui, sans-serif;
  --font-display-weight: 800;
  --font-display-tracking-tight: -0.03em;
  --font-display-tracking-tighter: -0.04em;

  /* Spacing (4pt scale) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* Motion */
  --dur-fast: 120ms;
  --dur-base: 200ms;
  --dur-slow: 320ms;
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-in: cubic-bezier(0.6, 0, 0.4, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --max-width-narrow: 640px;
  --max-width-base: 880px;
  --max-width-wide: 1200px;
  --max-width-full: 1440px;
}

/* Dark mode */
html[data-theme="dark"] {
  color-scheme: dark;

  --color-paper-0: oklch(14% 0.01 250);
  --color-paper-1: oklch(18% 0.012 250);
  --color-paper-2: oklch(23% 0.01 250);
  --color-paper-3: oklch(28% 0.01 250);

  --color-ink-0: oklch(96% 0.005 250);
  --color-ink-1: oklch(72% 0.01 250);
  --color-ink-2: oklch(56% 0.01 250);
  --color-ink-3: oklch(42% 0.008 250);

  --color-accent: oklch(68% 0.16 195);
  --color-accent-strong: oklch(76% 0.14 195);
  --color-accent-subtle: oklch(28% 0.08 195);
  --color-accent-border: oklch(48% 0.12 195);

  --color-success: oklch(64% 0.16 145);
  --color-success-subtle: oklch(26% 0.08 145);
  --color-warning: oklch(78% 0.16 85);
  --color-warning-subtle: oklch(30% 0.08 85);
  --color-danger: oklch(62% 0.2 25);
  --color-danger-subtle: oklch(28% 0.08 25);

  --color-border: oklch(28% 0.01 250);
  --color-border-strong: oklch(34% 0.012 250);

  --shadow-sm: 0 1px 2px oklch(0% 0 0 / 0.2), 0 1px 3px oklch(0% 0 0 / 0.15);
  --shadow: 0 2px 8px oklch(0% 0 0 / 0.25), 0 1px 2px oklch(0% 0 0 / 0.15);
  --shadow-lg: 0 8px 24px oklch(0% 0 0 / 0.35), 0 2px 6px oklch(0% 0 0 / 0.2);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: clip; }
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--color-ink-0);
  background: var(--color-paper-0);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  overflow-x: clip;
}
img, svg, canvas, video { max-width: 100%; display: block; }
button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; font: inherit; }
button:not(:disabled) { cursor: pointer; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { overflow-wrap: anywhere; }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ── Layout ── */
.wrap {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: var(--space-8) var(--space-4) var(--space-12);
}

/* ── Typography ── */
.hero {
  text-align: center;
  padding: var(--space-6) 0 var(--space-7);
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: var(--font-display-weight);
  font-size: var(--text-4xl);
  letter-spacing: var(--font-display-tracking-tight);
  line-height: 1.05;
  color: var(--color-ink-0);
}
.hero h2 {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-ink-1);
  margin-top: var(--space-2);
}
.hero p {
  max-width: 520px;
  margin: var(--space-3) auto 0;
  color: var(--color-ink-1);
  font-weight: 500;
  line-height: 1.6;
  font-size: var(--text-base);
}

/* Section heads */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-2xl);
  letter-spacing: -0.02em;
  color: var(--color-ink-0);
}
.section-head .section-lead {
  color: var(--color-ink-1);
  font-size: var(--text-base);
  font-weight: 500;
  line-height: 1.5;
}

/* ── Surface / Card ── */
.card {
  background: var(--color-paper-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

/* ── Toolbar ── */
.tools {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: 0 0 var(--space-6);
  align-items: center;
}

/* ── Search ── */
.search-wrap {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 200px;
  padding: 0 var(--space-4);
  background: var(--color-paper-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.search-wrap:focus-within {
  border-color: var(--color-accent-border);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}
.search-icon {
  font-size: var(--text-sm);
  color: var(--color-ink-2);
  margin-right: var(--space-2);
  flex-shrink: 0;
}
.search {
  flex: 1;
  padding: var(--space-3) 0;
  font-size: var(--text-base);
  font-weight: 500;
  border: 0;
  outline: 0;
  color: var(--color-ink-0);
  background: transparent;
  min-width: 0;
}
.search::placeholder { color: var(--color-ink-2); font-weight: 400; }
.search-clear {
  background: transparent;
  border: 0;
  outline: 0;
  font-size: var(--text-xl);
  color: var(--color-ink-2);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--dur-fast), background var(--dur-fast);
}
.search-clear:hover { color: var(--color-ink-1); background: var(--color-paper-2); }

/* ── Badge / Pill ── */
.badge {
  padding: var(--space-2) var(--space-4);
  font-weight: 700;
  font-size: var(--text-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  user-select: none;
  background: var(--color-paper-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-ink-0);
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
select.badge {
  border: 0;
  outline: 0;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2386868b' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 32px;
}
html[data-theme="dark"] select.badge {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23a1a1a6' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
}

/* ── Stat / Metric Cards (replaces info-card) ── */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.stat {
  padding: var(--space-5) var(--space-4);
  background: var(--color-paper-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast), transform var(--dur-fast);
}
.stat:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow); }
.stat:active { transform: scale(0.99); }
.stat-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-2);
  margin-bottom: var(--space-2);
}
.stat-value {
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-ink-0);
}
.stat-value--accent { color: var(--color-accent); }
.stat-meta {
  display: block;
  margin-top: var(--space-2);
  color: var(--color-ink-1);
  font-weight: 500;
  line-height: 1.4;
  font-size: var(--text-sm);
}

/* ── Table ── */
.table-wrap {
  overflow: auto;
  border-radius: var(--radius-lg);
  background: var(--color-paper-1);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.table-wrap::-webkit-scrollbar { width: 6px; height: 6px; }
.table-wrap::-webkit-scrollbar-track { background: transparent; }
.table-wrap::-webkit-scrollbar-thumb { background: var(--color-ink-3); border-radius: 99px; }

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 4px;
  min-width: 900px;
  table-layout: fixed;
}
th, td {
  padding: var(--space-3) var(--space-2);
  text-align: center;
  font-size: var(--text-sm);
  font-weight: 600;
  border: 0;
  word-wrap: break-word;
  overflow-wrap: break-word;
  border-radius: var(--radius-sm);
  transition: background var(--dur-fast) var(--ease-out);
}
th {
  background: var(--color-paper-2);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-ink-1);
  position: sticky;
  top: 0;
  z-index: 1;
}
td { background: var(--color-paper-1); }
td:hover { background: var(--color-paper-2); }

.day {
  width: 120px;
  min-width: 120px;
  font-size: var(--text-base);
  font-weight: 800;
  color: var(--color-accent);
  white-space: nowrap;
  word-break: keep-all;
  background: transparent !important;
}
.day span {
  display: inline-block;
  background: var(--color-accent-subtle);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
}
.day:hover { background: transparent !important; }
tr:nth-child(even) td:not(.day) { background: var(--color-paper-2); }
tr:nth-child(even) td:not(.day):hover { background: var(--color-border); }

.today td { outline: 2px solid var(--color-warning); outline-offset: -1px; }
.today td.day span { background: var(--color-warning-subtle); color: var(--color-warning); }

.active { outline: 2px solid var(--color-success) !important; outline-offset: -1px; background: var(--color-success-subtle) !important; }
.match { outline: 2px solid var(--color-accent) !important; outline-offset: -1px; }
.break { color: var(--color-warning); font-weight: 700; background: var(--color-warning-subtle) !important; }
.elective { background: var(--color-paper-2) !important; }
.subject { font-weight: 700; line-height: 1.25; }
.teacher, .period-note { color: var(--color-ink-1); font-size: var(--text-xs); font-weight: 600; margin-top: var(--space-1); line-height: 1.3; }
.free { color: var(--color-ink-2); font-weight: 600; }
th .period-note { font-size: 10px; font-weight: 600; margin-top: 2px; opacity: 0.7; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  font-weight: 700;
  font-size: var(--text-sm);
  border: 0;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 2px 8px oklch(48% 0.16 195 / 0.2);
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-secondary {
  background: var(--color-paper-2);
  color: var(--color-ink-0);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover { background: var(--color-border); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--color-ink-1);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { color: var(--color-ink-0); background: var(--color-paper-2); }
.btn-sm { padding: var(--space-1) var(--space-3); font-size: var(--text-xs); }
.btn-block { width: 100%; }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.btn-row .btn { flex: 1 1 auto; min-width: 0; }

/* ── Segmented Toggle ── */
.view-toggle {
  position: relative;
  display: flex;
  padding: 3px;
  background: var(--color-paper-2);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
}
.toggle-btn {
  flex: 1;
  border: 0;
  background: transparent;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 700;
  font-family: inherit;
  color: var(--color-ink-1);
  cursor: pointer;
  z-index: 2;
  border-radius: var(--radius-pill);
  transition: color var(--dur-base) var(--ease-out);
}
.toggle-btn.active { color: #fff; }
.toggle-slider {
  position: absolute;
  top: 3px;
  left: 3px;
  width: calc(50% - 3px);
  height: calc(100% - 6px);
  background: var(--color-accent);
  border-radius: var(--radius-pill);
  z-index: 1;
  transition: transform var(--dur-slow) var(--ease-spring);
}
.view-toggle[data-active="tui"] .toggle-slider { transform: translateX(100%); }

/* ── Search Results ── */
.result {
  max-height: 0;
  padding: 0 var(--space-5);
  margin-bottom: 0;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
  background: var(--color-paper-1);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  transition: max-height var(--dur-slow) var(--ease-out), padding var(--dur-slow) var(--ease-out), margin-bottom var(--dur-slow) var(--ease-out), opacity var(--dur-base) var(--ease-out), border-color var(--dur-slow) var(--ease-out);
}
.result.show {
  max-height: 2000px;
  padding: var(--space-5);
  margin-bottom: var(--space-4);
  opacity: 1;
  border-color: var(--color-border);
  pointer-events: auto;
}
.result h2 {
  font-size: var(--text-lg);
  font-weight: 800;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.result-count-badge {
  font-size: var(--text-xs);
  font-weight: 700;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  padding: 2px var(--space-2);
  border-radius: var(--radius-pill);
}
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
}
.result-card {
  padding: var(--space-4);
  border-radius: var(--radius);
  background: var(--color-paper-2);
  border: 1px solid var(--color-border);
  transition: border-color var(--dur-fast) var(--ease-out);
}
.result-card:hover { border-color: var(--color-accent-border); }
.rc-num {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-pill);
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}
.rc-name {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.rc-details {
  margin-top: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
}
.rc-detail-item { display: flex; align-items: center; gap: var(--space-2); }
.rc-icon {
  font-size: var(--text-xs);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 var(--space-1);
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border-radius: 6px;
  white-space: nowrap;
}
.rc-val { font-size: var(--text-sm); font-weight: 600; color: var(--color-ink-1); }
.result-empty, .result-placeholder {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  font-weight: 600;
  color: var(--color-ink-1);
  font-size: var(--text-base);
}
.result-placeholder { font-weight: 500; }

/* ── Links Card ── */
.links-card {
  margin-top: var(--space-6);
  padding: var(--space-4);
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
.link-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-paper-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--text-base);
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.link-item:hover {
  border-color: var(--color-accent-border);
  background: var(--color-accent-subtle);
}
.link-item:active { transform: scale(0.98); }

/* ── Admin Entry ── */
.admin-entry {
  margin: var(--space-10) auto 0;
  padding: var(--space-5);
  max-width: var(--max-width-base);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  background: var(--color-paper-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.admin-entry-text b {
  display: block;
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.admin-entry-text span {
  font-size: var(--text-sm);
  color: var(--color-ink-1);
  font-weight: 500;
  line-height: 1.5;
  margin-top: var(--space-1);
  display: block;
}

/* ── Admin Panel Modal ── */
.admin-panel {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-base) var(--ease-out), visibility var(--dur-base);
}
.admin-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: oklch(0% 0 0 / 0.3);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}
.admin-panel.show { opacity: 1; visibility: visible; }
.admin-panel.show::before { opacity: 1; }
.admin-card {
  position: relative;
  z-index: 1;
  width: min(680px, 96vw);
  max-height: 90vh;
  overflow: auto;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  background: var(--color-paper-1);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  transform: translateY(12px);
  opacity: 0;
  transition: transform var(--dur-slow) var(--ease-spring), opacity var(--dur-base) var(--ease-out);
}
.admin-panel.show .admin-card { transform: translateY(0); opacity: 1; }
.admin-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); margin: var(--space-3) 0; }
.admin-actions { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); margin-top: var(--space-3); }
.admin-btn {
  border: 0;
  border-radius: var(--radius);
  padding: var(--space-2) var(--space-3);
  font-weight: 700;
  font-family: inherit;
  font-size: var(--text-sm);
  cursor: pointer;
  color: #fff;
  background: var(--color-accent);
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out);
}
.admin-btn:hover { filter: brightness(1.05); }
.admin-btn:active { transform: scale(0.97); }
.admin-btn.secondary { background: var(--color-ink-2); }
.admin-btn.warn { background: var(--color-warning); color: var(--color-ink-0); }
.admin-btn.danger { background: var(--color-danger); }
.admin-input, .admin-select {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  outline: 0;
  font-family: inherit;
  font-size: var(--text-base);
  font-weight: 500;
  background: var(--color-paper-2);
  color: var(--color-ink-0);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.admin-input:focus, .admin-select:focus {
  border-color: var(--color-accent-border);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}
.admin-list { display: grid; gap: var(--space-2); margin-top: var(--space-3); }
.admin-name {
  display: grid;
  grid-template-columns: 44px 1fr auto auto;
  gap: var(--space-2);
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  background: var(--color-paper-2);
  border: 1px solid var(--color-border);
  transition: background var(--dur-fast);
}
.admin-name:hover { background: var(--color-border); }

/* ── TUI Shell ── */
.tui-shell {
  -webkit-tap-highlight-color: transparent;
  position: relative;
  background: oklch(8% 0.02 140);
  color: oklch(72% 0.12 140);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  font-family: var(--font-mono);
  font-variant-ligatures: none;
  tab-size: 4;
  box-shadow: var(--shadow-lg);
  border: 1px solid oklch(48% 0.18 145 / 0.12);
  overflow: hidden;
}
.tui-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 60px oklch(48% 0.18 145 / 0.03);
}
.tui-top {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  color: oklch(62% 0.14 145);
  border-bottom: 1px solid oklch(48% 0.18 145 / 0.12);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
}
.tui-screen {
  white-space: pre-wrap;
  line-height: 1.6;
  font-size: var(--text-sm);
  min-height: 380px;
  margin-bottom: var(--space-2);
}
.tui-line { display: flex; align-items: center; gap: var(--space-2); font-family: inherit; }
.tui-prompt { color: oklch(62% 0.14 145); font-weight: 900; white-space: nowrap; font-size: var(--text-sm); }
#tuiInput {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: 0;
  color: oklch(72% 0.12 140);
  font: inherit;
  font-size: var(--text-sm);
  caret-color: oklch(62% 0.14 145);
}

/* ── Footer ── */
.small {
  text-align: center;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-ink-2);
  margin-top: var(--space-6);
}

/* ── Page fade-in ── */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.hero, .tools, .stats, .stat-led, .table-wrap, .links-card, .admin-entry { animation: fadeIn var(--dur-base) var(--ease-out) both; }
.stats { animation-delay: 0.05s; }
.stat-led { animation-delay: 0.05s; }
.table-wrap { animation-delay: 0.1s; }

/* ── Responsive ── */
@media (max-width: 760px) {
  .wrap { padding: var(--space-5) var(--space-3) var(--space-8); }
  .tools { flex-direction: column; }
  .tools > * { min-width: 0; width: 100%; }
  .search-wrap { min-width: 0; }
  .hero { padding-top: var(--space-4); }
  th, td { font-size: var(--text-xs); padding: var(--space-2) var(--space-1); }
  .admin-row, .admin-actions { grid-template-columns: 1fr; }
  .admin-entry { flex-direction: column; align-items: stretch; }
  .links-card { flex-direction: column; align-items: stretch; }
  .result-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
}

/* ── Utility ── */
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }