/* 24 Challenge Puzzle Page Styles - Built from Number Cages Template */

/* .puzzle24-grid-wrapper inherits from puzzle-grid-wrapper */

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    padding: 15px;
    border-radius: 16px;
    border: 2px solid var(--border-color);
    width: 350px;
    height: 350px;
}

/* Number Card */
.number-card {
    aspect-ratio: 1 / 1;
    background: var(--bg-primary);
    border: 3px solid var(--text-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.number-card:hover {
    background: var(--bg-secondary);
    transform: translateY(-3px);
}

.number-card.selected {
    background: var(--primary-color) !important;
    color: #fff !important;
    border-color: var(--primary-color);
    box-shadow: 0 8px 20px rgba(var(--primary-rgb), 0.3);
}

.number-card.dummy {
    background: transparent;
    border: 2px dashed var(--border-color);
    pointer-events: none;
    opacity: 0.4;
}

.number-card.dummy:hover {
    transform: none;
    background: transparent;
}

/* Solved View in Cards Grid */
.cards-grid.solved {
    display: flex;
    padding: 15px;
}

.solved-view {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 15px;
    text-align: center;
}

.solved-numbers,
.solved-steps {
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.solved-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
    margin-bottom: 8px;
}

.solved-nums-grid {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.solved-num {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 2px solid var(--text-primary);
    border-radius: 8px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.solved-steps-list {
    font-family: monospace;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.solved-step {
    padding: 3px 0;
}

.solved-result {
    font-size: 1.5rem;
    font-weight: 800;
    color: #4CAF50;
    padding: 10px;
    background: rgba(76, 175, 80, 0.1);
    border-radius: 8px;
}

/* Original Numbers Display */
.original-numbers {
    width: 100%;
    max-width: 350px;
    padding: 10px 15px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 10px;
    text-align: center;
}

.original-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.original-nums {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
}

/* Steps Display */
.steps-display {
    width: 100%;
    max-width: 350px;
    padding: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-family: monospace;
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.step-item {
    border-bottom: 1px dashed var(--border-color);
}

.step-item:last-child {
    border-bottom: none;
}

.step-placeholder {
    color: var(--text-secondary);
    font-style: italic;
    font-family: system-ui, sans-serif;
}

/* Num Pad (for Operators) - largely duplicates common num-pad but 24 uses 4 cols.
   Keeping for safety unless common can handle it. Common uses 5 cols. */
.num-pad {
    margin-top: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    width: 100%;
    max-width: 350px;
}

/* Override overrides? .num-btn and op-btn active logic is specific enough to keep small tweaks */
.num-btn.op-btn.active {
    background: var(--text-primary);
    color: var(--bg-primary);
}

/* Responsive */
@media (max-width: 600px) {
    .number-card {
        font-size: 2rem;
    }

    .op-btn {
        width: 48px;
        height: 48px;
        font-size: 1.4rem;
    }

    .cards-grid {
        width: 100%;
        aspect-ratio: 1 / 1;
        padding: 15px;
        gap: 10px;
    }
}