.screen[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  background: #111;
  color: #eee;
}

#app {
  min-height: 100vh;
}

.screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.panel {
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 24px;
}

.setup-panel {
  width: min(100%, 420px);
}

.setup-panel h1 {
  margin: 0 0 8px;
  font-size: 1.75rem;
}

.subtitle {
  margin: 0 0 20px;
  color: #aaa;
}

.app-version {
  margin: 16px 0 0;
  font-size: 0.75rem;
  color: #666;
  text-align: center;
}

.field-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.size-fieldset {
  border: none;
  margin: 0 0 16px;
  padding: 0;
}

.size-fieldset legend {
  margin-bottom: 8px;
  font-size: 0.95rem;
  color: #ccc;
}

.toggle-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.toggle-group input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.toggle-group label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid #444;
  border-radius: 4px;
  background: #222;
  color: #eee;
  font-size: 1rem;
  cursor: pointer;
  user-select: none;
}

.toggle-group input:checked + label {
  background: #0a7;
  border-color: #0a7;
  color: #fff;
}

.toggle-group input:focus-visible + label {
  outline: 2px solid #0cb;
  outline-offset: 2px;
}

.toggle-group label:hover {
  filter: brightness(1.1);
}

.field-row label {
  flex: 0 0 80px;
}

.error {
  color: #f66;
  margin: 0 0 12px;
}

.btn {
  padding: 10px 16px;
  border: 1px solid #444;
  border-radius: 4px;
  background: #222;
  color: #eee;
  font-size: 1rem;
  cursor: pointer;
  min-height: 44px;
}

.btn.primary {
  background: #0a7;
  border-color: #0a7;
  color: #fff;
  width: 100%;
}

.setup-actions {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

.setup-actions .btn {
  flex: 1;
  min-width: 0;
}

.btn:hover:not(:disabled) {
  filter: brightness(1.1);
}

.btn:disabled {
  opacity: 0.45;
  cursor: default;
}

#game-screen {
  justify-content: flex-start;
  gap: 0;
}

.game-column {
  container-type: inline-size;
  container-name: game-column;
  width: min(100%, 960px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hud {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px 16px;
  width: 100%;
  padding: 8px 12px;
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 8px;
  font-size: 0.95rem;
}

.hud-left,
.hud-center {
  display: flex;
  align-items: center;
  gap: 16px 20px;
}

.hud-left {
  justify-self: start;
}

.hud-center {
  justify-self: center;
}

.hud-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  justify-self: end;
}

.hud-stat {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35em;
  white-space: nowrap;
}

.hud-value-wrap {
  display: inline-flex;
  align-items: baseline;
}

.hud-value {
  display: inline-block;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.hud-value--rotations,
.hud-value--min {
  min-width: 4ch;
}

.hud-value--time {
  min-width: 5ch;
}

.hud-value--connected {
  min-width: 7ch;
}

.btn--hud {
  min-height: 40px;
  padding: 8px 14px;
  white-space: nowrap;
}

.btn--hud.primary {
  width: auto;
}

@container game-column (max-width: 580px) {
  .hud {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
  }

  .hud-left {
    grid-column: 1;
    grid-row: 1;
    display: grid;
    grid-template-columns: max-content 4ch;
    column-gap: 0.35em;
    row-gap: 2px;
    justify-self: stretch;
  }

  .hud-center {
    grid-column: 2;
    grid-row: 1;
    display: grid;
    grid-template-columns: max-content auto;
    column-gap: 0.35em;
    row-gap: 2px;
    justify-content: end;
    justify-self: stretch;
  }

  .hud-left .hud-stat,
  .hud-center .hud-stat {
    display: contents;
  }

  .hud-actions {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-self: stretch;
  }

  .hud-actions .btn--hud {
    flex: 1;
  }
}

.canvas-wrap {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
}

#game-canvas {
  display: block;
  max-width: 100%;
  height: auto;
  background: #000;
  touch-action: none;
  user-select: none;
}

.win-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.65);
  border-radius: 4px;
}

.win-overlay[hidden] {
  display: none !important;
}

.win-card {
  position: relative;
  width: min(90%, 360px);
  text-align: center;
}

.win-title {
  margin: 0 0 16px;
  padding: 0 32px;
  color: #0cb;
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid #444;
  border-radius: 50%;
  background: #222;
  color: #ccc;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

.modal-close:hover:not(:disabled) {
  color: #fff;
  border-color: #666;
  background: #2a2a2a;
}

.modal-close:disabled {
  opacity: 0.35;
  cursor: default;
}

.win-score {
  margin: 0 0 16px;
  font-size: 1.25rem;
}

.win-score strong {
  color: #0cb;
  font-variant-numeric: tabular-nums;
}

.win-stats {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  text-align: left;
}

.win-stats li {
  padding: 6px 0;
}

.win-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.win-notice {
  margin: 0 0 12px;
  font-size: 0.9rem;
  color: #aaa;
}

.win-notice--success {
  color: #0cb;
}

.name-dialog {
  z-index: 2;
  background: transparent;
}

.name-dialog-input {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 12px;
  border: 1px solid #444;
  border-radius: 4px;
  background: #222;
  color: #eee;
  font-size: 1rem;
}

.help-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(0, 0, 0, 0.75);
}

.help-overlay[hidden] {
  display: none !important;
}

.help-card {
  width: min(100%, 480px);
  max-height: min(90vh, 640px);
  overflow: auto;
}

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

.help-header h2 {
  margin: 0;
}

.help-intro {
  margin: 0 0 8px;
  color: #ccc;
}

.help-note {
  margin: 0 0 12px;
  font-size: 0.9rem;
  color: #aaa;
}

.help-subtitle {
  margin: 24px 0 8px;
  font-size: 1rem;
  color: #ccc;
}

.help-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.help-table th,
.help-table td {
  padding: 6px 8px;
  text-align: left;
  border-bottom: 1px solid #333;
}

.help-table th {
  color: #aaa;
  font-weight: normal;
}

.leaderboard-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(0, 0, 0, 0.75);
}

.leaderboard-overlay[hidden] {
  display: none !important;
}

.leaderboard-card {
  position: relative;
  width: min(100%, 640px);
  max-height: min(90vh, 720px);
  display: flex;
  flex-direction: column;
}

.leaderboard-title {
  margin: 0 0 12px;
  padding: 0 32px 0 0;
}

.leaderboard-status {
  margin: 0 0 12px;
  color: #aaa;
}

.leaderboard-table-wrap {
  overflow: auto;
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.leaderboard-table th,
.leaderboard-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid #333;
}

.leaderboard-table th {
  color: #aaa;
  font-weight: normal;
  position: sticky;
  top: 0;
  background: #1a1a1a;
}

.leaderboard-table td:nth-child(1),
.leaderboard-table td:nth-child(2) {
  font-variant-numeric: tabular-nums;
}

.leaderboard-rank,
.leaderboard-score {
  font-weight: bold;
}

.leaderboard-row--rank-1 .leaderboard-rank,
.leaderboard-row--rank-1 .leaderboard-score {
  font-size: 1.2rem;
  color: #ffd700;
}

.leaderboard-row--rank-2 .leaderboard-rank,
.leaderboard-row--rank-2 .leaderboard-score {
  font-size: 1.2rem;
  color: #c0c0c0;
}

.leaderboard-row--rank-3 .leaderboard-rank,
.leaderboard-row--rank-3 .leaderboard-score {
  font-size: 1.2rem;
  color: #cd7f32;
}

.leaderboard-anonymous {
  font-style: italic;
  color: #aaa;
}

.leaderboard-stats {
  width: 1%;
  text-align: center;
  white-space: nowrap;
}

.leaderboard-stats-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: #ccc;
  cursor: pointer;
}

.leaderboard-stats-btn:hover,
.leaderboard-stats-btn:focus-visible,
.leaderboard-stats-btn[aria-expanded='true'] {
  color: #fff;
  border-color: #444;
  background: #222;
  outline: none;
}

.leaderboard-stats-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.leaderboard-stats-tip {
  position: fixed;
  z-index: 200;
  min-width: 140px;
  padding: 10px 12px;
  border: 1px solid #444;
  border-radius: 8px;
  background: #222;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  color: #eee;
  font-size: 0.85rem;
  line-height: 1.35;
  pointer-events: none;
}

.leaderboard-stats-tip[hidden] {
  display: none !important;
}

.leaderboard-stats-tip p {
  margin: 0;
}

.leaderboard-stats-tip p + p {
  margin-top: 4px;
}

.leaderboard-stats-tip strong {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.leaderboard-stats-tip__empty {
  margin: 0;
  color: #aaa;
}