:root {
  --ink: #0F172A;
  --ink-muted: #334155;
  --ink-faint: #64748B;
  --paper: #F8FAFC;
  --paper-alt: #F1F5F9;
  --border: #CBD5E1;
  --frame: #94A3B8;
  --void: #0B1020;
  --system: #111827;
  --player: #F8FAFC;
  --tie: #9CA3AF;
  --accent: #1F2937;
  --accent-hover: #0F172A;
  --danger: #B91C1C;
  --success: #166534;
  --shadow-soft: 0 22px 64px rgba(15, 23, 42, 0.08);
  --shadow-panel: 0 24px 70px rgba(15, 23, 42, 0.12);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --panel-width: 400px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --max-page-width: 1480px;
  --transition-soft: 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
  --hud-backdrop: rgba(248, 250, 252, 0.72);
  --hud-border: rgba(203, 213, 225, 0.7);
  --font-ui: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  width: 100%;
  overflow-x: hidden;
  overscroll-behavior-x: none;
  background:
    radial-gradient(circle at top, rgba(148, 163, 184, 0.08), transparent 40%),
    linear-gradient(180deg, #EFF4F9 0%, #F8FAFC 24%, #F8FAFC 100%);
  color: var(--ink);
  font-family: var(--font-ui);
  -webkit-text-size-adjust: 100%;
  font-variant-numeric: tabular-nums;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

body {
  position: relative;
  line-height: 1.4;
}

img, svg { display: block; max-width: 100%; }

button, input {
  font: inherit;
}

button {
  border: none;
  background: none;
  padding: 0;
  color: inherit;
}

a {
  color: var(--ink);
  text-decoration: none;
}

a:hover { color: var(--accent-hover); }

main#app {
  width: 100%;
  min-height: 100svh;
}

.layout {
  width: min(100%, var(--max-page-width));
  margin: 0 auto;
}

.board-section {
  position: relative;
  background: var(--void);
  isolation: isolate;
  overflow: hidden;
}

.board-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 10%, rgba(148, 163, 184, 0.08), transparent 32%),
    radial-gradient(circle at 50% 92%, rgba(148, 163, 184, 0.05), transparent 24%);
  pointer-events: none;
  z-index: 0;
}

.board-shell {
  position: relative;
  width: 100%;
  height: 100%;
  touch-action: none;
  overflow: hidden;
  background:
    radial-gradient(circle at center, rgba(148, 163, 184, 0.05), rgba(11, 16, 32, 0) 52%),
    #0B1020;
}

.board-shell canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.board-noise {
  position: absolute;
  inset: 0;
  background: url('/assets/texture/paper-noise.svg');
  opacity: 0.06;
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.hud {
  position: absolute;
  top: calc(var(--safe-top) + 16px);
  left: 50%;
  transform: translateX(-50%);
  display: grid;
  gap: 4px;
  text-align: center;
  pointer-events: none;
  z-index: 4;
}

.hud-chip {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  align-items: center;
  padding: 10px 16px;
  min-width: 160px;
  border-radius: 999px;
  background: var(--hud-backdrop);
  border: 1px solid var(--hud-border);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-soft);
}

.hud-value {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hud-subvalue,
.hud-status {
  font-size: 12px;
  color: var(--ink-muted);
}

.hud-status[data-state="working"] { color: var(--ink); }
.hud-status[data-state="ready"] { color: var(--success); }

.micro-controls {
  position: absolute;
  top: calc(var(--safe-top) + 16px);
  right: 16px;
  display: flex;
  gap: 8px;
  z-index: 5;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: rgba(248, 250, 252, 0.9);
  color: var(--ink);
  border: 1px solid rgba(203, 213, 225, 0.92);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-soft), background var(--transition-soft), border-color var(--transition-soft);
  cursor: pointer;
}

.icon-button:hover { transform: translateY(-1px); }
.icon-button:active { transform: translateY(1px); }
.icon-button[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}

.icon-button svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
  fill: none;
  stroke: currentColor;
}

.panels {
  position: relative;
  background: transparent;
}

.panel-stack {
  display: grid;
  gap: 24px;
  padding: 24px 16px calc(32px + var(--safe-bottom));
  width: min(100%, 980px);
  margin: 0 auto;
}

.panel {
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.78), rgba(248,250,252,0.95)),
    url('/assets/texture/paper-noise.svg');
  border: 1px solid rgba(203, 213, 225, 0.9);
  box-shadow: var(--shadow-panel);
  padding: 18px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.panel-title {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.panel-subtitle {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--ink-muted);
}

.brand-panel {
  display: grid;
  gap: 12px;
}

.brand-lockup {
  width: min(100%, 420px);
}

.brand-copy {
  display: grid;
  gap: 6px;
  color: var(--ink-muted);
  font-size: 14px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(241, 245, 249, 0.85);
  color: var(--ink-muted);
  font-size: 13px;
}

.chip.success {
  color: var(--success);
  border-color: rgba(22, 101, 52, 0.24);
  background: rgba(22, 101, 52, 0.06);
}

.chip.guest {
  color: var(--ink);
}

.stats-grid {
  display: grid;
  gap: 12px;
}

.stat-card {
  display: grid;
  gap: 4px;
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(203, 213, 225, 0.78);
  background: rgba(255, 255, 255, 0.68);
}

.stat-label {
  color: var(--ink-muted);
  font-size: 13px;
}

.stat-value {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.split-stats {
  display: grid;
  gap: 12px;
}

.controls-grid {
  display: grid;
  gap: 10px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-soft), background var(--transition-soft), border-color var(--transition-soft), color var(--transition-soft), opacity var(--transition-soft);
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(1px); }
.btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--paper);
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  border-color: var(--border);
  background: rgba(255,255,255,0.7);
  color: var(--ink);
}

.btn-secondary:hover { background: rgba(241,245,249,0.9); }

.btn-danger {
  background: rgba(185, 28, 28, 0.08);
  color: var(--danger);
  border-color: rgba(185, 28, 28, 0.22);
}

.btn-danger:hover {
  background: rgba(185, 28, 28, 0.12);
}

.helper-text {
  font-size: 13px;
  color: var(--ink-muted);
}

.inline-field {
  display: grid;
  gap: 8px;
}

.field-label {
  font-size: 13px;
  color: var(--ink-muted);
}

.text-input {
  width: 100%;
  min-height: 46px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  outline: none;
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink);
  user-select: text;
  -webkit-user-select: text;
}

.text-input:focus {
  border-color: var(--frame);
  box-shadow: 0 0 0 4px rgba(148, 163, 184, 0.16);
}

.table-wrap {
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid rgba(203, 213, 225, 0.9);
  background: rgba(255,255,255,0.72);
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  min-width: 320px;
}

.table-wrap th,
.table-wrap td {
  padding: 12px 14px;
  text-align: left;
  white-space: nowrap;
  font-size: 14px;
}

.table-wrap th {
  color: var(--ink-muted);
  font-weight: 600;
  border-bottom: 1px solid rgba(203, 213, 225, 0.76);
  background: rgba(248,250,252,0.86);
}

.table-wrap tbody tr + tr td {
  border-top: 1px solid rgba(203, 213, 225, 0.42);
}

.table-wrap tbody tr.highlight {
  background: rgba(15, 23, 42, 0.055);
}

.rank-col { width: 54px; }
.percent-col, .points-col { text-align: right; }
.metal-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.medal-card {
  border-radius: 12px;
  padding: 12px;
  background: rgba(255,255,255,0.64);
  border: 1px solid rgba(203,213,225,0.76);
}

.medal-card .stat-value {
  font-size: 18px;
}

.help-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  color: var(--ink-muted);
}

.footer {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--ink-faint);
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-links a {
  color: var(--ink-muted);
}

.toast-region {
  position: fixed;
  inset: auto 0 calc(16px + var(--safe-bottom)) 0;
  display: grid;
  gap: 8px;
  justify-items: center;
  pointer-events: none;
  z-index: 30;
  padding: 0 16px;
}

.toast {
  pointer-events: none;
  min-width: min(92vw, 360px);
  max-width: 420px;
  padding: 12px 16px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.92);
  color: white;
  box-shadow: var(--shadow-panel);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition-soft), transform var(--transition-soft);
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.legal-page {
  width: min(100%, 880px);
  margin: 0 auto;
  padding: clamp(28px, 4vw, 48px) 20px 40px;
}

.legal-page .brand-lockup {
  width: min(100%, 340px);
  margin-bottom: 24px;
}

.legal-page h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1.05;
}

.legal-page h2 {
  margin: 28px 0 10px;
  font-size: clamp(20px, 3vw, 26px);
}

.legal-page p,
.legal-page li {
  color: var(--ink-muted);
  font-size: 16px;
}

.legal-page ul {
  display: grid;
  gap: 8px;
}

.legal-page .footer {
  margin-top: 32px;
}

.hidden {
  display: none !important;
}

@media (max-width: 1023px) {
  .layout {
    display: block;
  }

  .board-section {
    min-height: 100svh;
    height: 100svh;
    position: sticky;
    top: 0;
  }

  .panel-stack {
    width: 100%;
  }

  .split-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .brand-panel {
    padding-top: 6px;
  }
}

@media (min-width: 1024px) {
  .layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, var(--panel-width));
    align-items: stretch;
    min-height: 100svh;
  }

  .board-section {
    min-height: 100svh;
    height: 100svh;
    position: sticky;
    top: 0;
  }

  .panels {
    min-height: 100svh;
    max-height: 100svh;
    overflow-y: auto;
    border-left: 1px solid rgba(203, 213, 225, 0.8);
    background:
      linear-gradient(180deg, rgba(248,250,252,0.92), rgba(248,250,252,0.96)),
      url('/assets/texture/paper-noise.svg');
  }

  .panel-stack {
    width: 100%;
    padding: 24px;
  }

  .split-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metal-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 639px) {
  .panel {
    padding: 16px;
  }

  .panel-title {
    font-size: 20px;
  }

  .hud-chip {
    min-width: 148px;
    padding: 10px 14px;
  }

  .hud-value {
    font-size: 18px;
  }

  .button-row {
    flex-direction: column;
  }

  .button-row .btn {
    width: 100%;
  }

  .split-stats,
  .stats-grid,
  .metal-grid {
    grid-template-columns: 1fr;
  }

  .footer {
    align-items: flex-start;
    flex-direction: column;
  }
}