/* ── Layout ─────────────────────────────────── */
.play-header { text-align: center; margin-bottom: 24px; }
.play-header h1 { color: var(--color-dark); font-size: 1.8rem; margin-bottom: 8px; }
.play-header .play-subtitle { color: var(--color-text-muted); font-size: 1rem; }

/* ── Tab Bar ────────────────────────────────── */
.play-tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: 28px;
}
.play-tab {
    flex: 1;
    padding: 12px 16px;
    text-align: center;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text-muted);
    cursor: pointer;
    border: none;
    background: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: color 0.2s, border-color 0.2s;
    font-family: inherit;
}
.play-tab:hover { color: var(--color-dark); }
.play-tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.play-panel { display: none; }
.play-panel.active { display: block; }

/* ── Board Area ─────────────────────────────── */
.play-board-area {
    display: flex;
    gap: 24px;
    justify-content: center;
    align-items: flex-start;
    flex-wrap: wrap;
}

.board-wrap {
    width: 520px;
    height: 520px;
    flex-shrink: 0;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.board-wrap cg-board { border-radius: 4px; }

/* ── Side Panel ─────────────────────────────── */
.play-side-panel {
    min-width: 240px;
    max-width: 300px;
    flex: 1;
}

/* ── Puzzle Info ─────────────────────────────── */
.puzzle-info {
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    padding: 20px;
}
.puzzle-info h3 {
    font-size: 1rem;
    color: var(--color-dark);
    margin-bottom: 12px;
}
.puzzle-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}
.puzzle-meta-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
}
.puzzle-meta-label { color: var(--color-text-muted); }
.puzzle-meta-value { color: var(--color-dark); font-weight: 600; }

.puzzle-turn {
    text-align: center;
    padding: 10px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 16px;
}
.puzzle-turn.white { background: #f8f8f0; color: #333; border: 1px solid #ddd; }
.puzzle-turn.black { background: #333; color: #f8f8f0; }

/* Difficulty selector */
.difficulty-selector {
    display: flex;
    gap: 6px;
    margin-bottom: 16px;
}
.diff-btn {
    flex: 1;
    padding: 8px 4px;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    background: #fff;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    text-align: center;
    transition: all 0.2s;
    font-family: inherit;
    color: var(--color-text);
}
.diff-btn:hover { border-color: var(--color-primary); }
.diff-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* Action buttons */
.puzzle-actions {
    display: flex;
    gap: 8px;
}
.puzzle-btn {
    flex: 1;
    padding: 10px 12px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: background 0.2s;
    font-family: inherit;
}
.puzzle-btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.puzzle-btn-primary:hover { background: var(--color-primary-dark); }
.puzzle-btn-secondary {
    background: var(--color-bg-light);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}
.puzzle-btn-secondary:hover { background: var(--color-border); }

/* Puzzle feedback */
.puzzle-feedback {
    text-align: center;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 12px;
    display: none;
}
.puzzle-feedback.correct {
    display: block;
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}
.puzzle-feedback.wrong {
    display: block;
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}
.puzzle-feedback.solved {
    display: block;
    background: #f0fdf4;
    color: #15803d;
    border: 1px solid #4ade80;
}

/* Puzzle stats */
.puzzle-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}
.puzzle-stat { text-align: center; }
.puzzle-stat-num {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-dark);
}
.puzzle-stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}
.puzzle-stat-num.correct-color { color: #16a34a; }
.puzzle-stat-num.wrong-color { color: #dc2626; }

/* ── Free Play Panel ────────────────────────── */
.freeplay-info {
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    padding: 20px;
}
.freeplay-info h3 {
    font-size: 1rem;
    color: var(--color-dark);
    margin-bottom: 12px;
}
.move-history {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 12px;
    min-height: 120px;
    max-height: 240px;
    overflow-y: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 16px;
    color: var(--color-text);
}
.move-history .move-number { color: var(--color-text-muted); }
.move-history .move { cursor: pointer; padding: 1px 3px; border-radius: 3px; }
.move-history .move:hover { background: var(--color-bg-light); }
.move-history .move.last { background: #fef3c7; }

.freeplay-turn {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}
.freeplay-turn strong { color: var(--color-dark); }

.freeplay-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.freeplay-btn {
    flex: 1;
    min-width: 80px;
    padding: 10px 8px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: #fff;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8rem;
    text-align: center;
    transition: all 0.2s;
    font-family: inherit;
    color: var(--color-text);
}
.freeplay-btn:hover {
    background: var(--color-bg-light);
    border-color: var(--color-primary);
}

/* ── Chessground overrides ──────────────────── */
cg-board {
    background-color: #b58863;
}
cg-board square.last-move {
    background-color: rgba(155, 199, 0, 0.41) !important;
}
cg-board square.selected {
    background-color: rgba(20, 85, 30, 0.5) !important;
}
cg-board square.move-dest {
    background: radial-gradient(rgba(20, 85, 30, 0.3) 22%, transparent 22%);
}
cg-board square.puzzle-correct {
    background-color: rgba(34, 197, 94, 0.5) !important;
}
cg-board square.puzzle-wrong {
    background-color: rgba(239, 68, 68, 0.5) !important;
}

/* ── Bot Panel ──────────────────────────────── */
.bot-info {
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    padding: 20px;
}
.bot-info h3 {
    font-size: 1rem;
    color: var(--color-dark);
    margin-bottom: 16px;
}

.bot-difficulty {
    margin-bottom: 16px;
}
.bot-diff-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    display: block;
    margin-bottom: 8px;
}
.bot-diff-buttons {
    display: flex;
    gap: 6px;
}
.bot-diff-btn {
    flex: 1;
    padding: 8px 4px;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    background: #fff;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    text-align: center;
    transition: all 0.2s;
    font-family: inherit;
    color: var(--color-text);
}
.bot-diff-btn:hover { border-color: var(--color-primary); }
.bot-diff-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.bot-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 12px;
    background: #f8f8f0;
    color: #333;
    border: 1px solid #ddd;
}
.bot-status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}
.bot-status-dot.white-dot { background: #f0f0f0; border: 1px solid #999; }
.bot-status-dot.black-dot { background: #333; }

.bot-feedback {
    text-align: center;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 12px;
    display: none;
}
.bot-feedback.thinking {
    display: block;
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
}
.bot-feedback.win {
    display: block;
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}
.bot-feedback.lose {
    display: block;
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}
.bot-feedback.draw {
    display: block;
    background: #f0f4ff;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

.bot-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}
.bot-btn {
    flex: 1;
    padding: 10px 8px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.8rem;
    text-align: center;
    transition: all 0.2s;
    font-family: inherit;
}
.bot-btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.bot-btn-primary:hover { background: var(--color-primary-dark); }
.bot-btn-secondary {
    background: var(--color-bg-light);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}
.bot-btn-secondary:hover { background: var(--color-border); }
.bot-btn-danger {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fca5a5;
}
.bot-btn-danger:hover { background: #fee2e2; }

.bot-engine-status {
    text-align: center;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    padding: 8px;
}
.bot-engine-status.ready { color: #16a34a; }

/* ── Credit ─────────────────────────────────── */
.play-credit {
    text-align: center;
    margin-top: 24px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}
.play-credit a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}
.play-credit a:hover { text-decoration: underline; }

/* ── Responsive ─────────────────────────────── */
@media (max-width: 700px) {
    .play-board-area {
        flex-direction: column;
        align-items: center;
    }
    .board-wrap {
        width: calc(100vw - 48px);
        height: calc(100vw - 48px);
        max-width: 520px;
        max-height: 520px;
    }
    .play-side-panel {
        min-width: unset;
        max-width: unset;
        width: 100%;
    }
    .puzzle-stats { gap: 16px; }
}