/* ===== Gomoku Game ===== */

.gb-tool .row-layout {
  align-items: stretch;
}

.gb-panels > [class*='col-'] {
  display: flex;
  flex-direction: column;
}

.gb-panel,
.gb-side {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-width: 0;
}

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

.gb-panel-header > span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.gb-mode-switch {
  display: inline-flex;
  background: var(--bg-soft, #f1f5f9);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
}

.gb-mode-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary, #64748b);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.gb-mode-btn.is-active {
  background: var(--accent, #2563eb);
  color: #fff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.gb-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1 1 auto;
}

/* status */
.gb-status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 10px;
  background: var(--bg-card, #fff);
  font-size: 14px;
  font-weight: 600;
  color: var(--text, #0f172a);
}

.gb-status-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 2px solid rgba(0, 0, 0, 0.2);
}

.gb-status-dot.black {
  background: #111;
}

.gb-status-dot.white {
  background: #f8f8f8;
}

.gb-status-dot.neutral {
  background: #94a3b8;
}

/* board */
.gb-board-wrap {
  display: flex;
  justify-content: center;
  background: var(--bg-soft, #f8fafc);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 12px;
  padding: 12px;
}

#gb-board {
  width: 100%;
  max-width: 560px;
  height: auto;
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  cursor: pointer;
  touch-action: manipulation;
}

/* controls */
.gb-controls {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.gb-settings {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.gb-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12.5px;
  color: var(--text-secondary, #475569);
}

.gb-field .form-control {
  min-width: 130px;
}

.gb-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* message */
.gb-message {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.5;
}

.gb-message.hidden {
  display: none;
}

.gb-msg-info {
  background: var(--info-soft, #eff6ff);
  color: var(--info, #2563eb);
  border: 1px solid var(--info-border, #bfdbfe);
}

.gb-msg-success {
  background: var(--success-soft, #f0fdf4);
  color: var(--success, #16a34a);
  border: 1px solid var(--success-border, #bbf7d0);
}

.gb-msg-error {
  background: var(--danger-soft, #fef2f2);
  color: var(--danger, #dc2626);
  border: 1px solid var(--danger-border, #fecaca);
}

.gb-message.is-fading {
  opacity: 0;
  transition: opacity 0.25s ease;
}

/* score */
.gb-score {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

.gb-score-item {
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 10px;
  padding: 10px 12px;
  text-align: center;
  background: var(--bg-card, #fff);
}

.gb-score-item b {
  display: block;
  font-size: 24px;
  color: var(--text, #0f172a);
  font-variant-numeric: tabular-nums;
}

.gb-score-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--text-secondary, #475569);
}

.gb-dot-black {
  color: #111;
  font-size: 10px;
}

.gb-dot-white {
  color: #cbd5e1;
  font-size: 10px;
}

/* move list */
.gb-movelist-wrap {
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 10px;
  overflow: hidden;
}

.gb-movelist-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text, #0f172a);
  border-bottom: 1px solid var(--border, #e2e8f0);
  background: var(--bg-soft, #f8fafc);
}

.gb-move-count {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-secondary, #64748b);
}

.gb-movelist {
  max-height: 180px;
  overflow-y: auto;
  padding: 4px 0;
}

.gb-movelist-empty {
  padding: 18px 14px;
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary, #64748b);
}

.gb-move-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  font-size: 13px;
  color: var(--text, #0f172a);
  font-variant-numeric: tabular-nums;
}

.gb-move-num {
  color: var(--text-secondary, #94a3b8);
  min-width: 26px;
}

.gb-move-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.25);
}

.gb-move-dot.black {
  background: #111;
}

.gb-move-dot.white {
  background: #f8f8f8;
}

/* rules */
.gb-rules {
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 10px;
  padding: 0 14px;
  background: var(--bg-card, #fff);
}

.gb-rules summary {
  cursor: pointer;
  padding: 10px 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--text, #0f172a);
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.gb-rules summary::-webkit-details-marker {
  display: none;
}

.gb-rules summary::after {
  content: '\f282';
  font-family: 'bootstrap-icons';
  margin-left: auto;
  font-size: 11px;
  color: var(--text-secondary, #64748b);
  transition: transform 0.2s ease;
}

.gb-rules[open] summary::after {
  transform: rotate(180deg);
}

.gb-rules-body {
  padding: 4px 0 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-secondary, #475569);
}

.gb-rules-body p {
  margin: 0 0 8px;
}

.gb-rules-body p:last-child {
  margin-bottom: 0;
}

.gb-rules-body code {
  background: var(--bg-soft, #f1f5f9);
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 12px;
  color: var(--text, #0f172a);
}

.gb-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 14px;
  background: var(--info-soft, #eff6ff);
  border: 1px solid var(--info-border, #bfdbfe);
  border-radius: 10px;
  color: var(--info, #1d4ed8);
  font-size: 12.5px;
  line-height: 1.6;
}

@media (max-width: 767px) {
  .gb-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .gb-actions {
    justify-content: flex-start;
  }
}