/**
 * Math Block Master Tool - Zhween Classroom Tools
 *
 * Educational game for learning place value with base ten blocks
 * Supports RTL languages and dark mode
 */

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */

:root {
    /* Brand Colors */
    --mathblock-primary: #15aebf;
    --mathblock-primary-hover: #0e9aa8;
    --mathblock-primary-light: rgba(21, 174, 191, 0.1);

    /* Game Colors */
    --mathblock-success: #00b894;
    --mathblock-success-light: rgba(0, 184, 148, 0.1);
    --mathblock-danger: #e17055;
    --mathblock-danger-light: rgba(225, 112, 85, 0.1);
    --mathblock-warning: #ffd93d;
    --mathblock-warning-light: rgba(255, 217, 61, 0.15);
    --mathblock-accent: #ff6b35;

    /* Level Colors */
    --mathblock-level-1: linear-gradient(135deg, #00b894, #00cec9);
    --mathblock-level-2: linear-gradient(135deg, #0984e3, #74b9ff);
    --mathblock-level-3: linear-gradient(135deg, #e17055, #fdcb6e);
    --mathblock-level-4: linear-gradient(135deg, #a29bfe, #6c5ce7);

    /* Block Colors */
    --mathblock-hundred-bg: #3b82f6;
    --mathblock-hundred-border: #1e3a8a;
    --mathblock-hundred-cell: #1e40af;
    --mathblock-ten-bg: #10b981;
    --mathblock-ten-border: #065f46;
    --mathblock-ten-cell: #047857;
    --mathblock-one-bg: #eab308;
    --mathblock-one-border: #854d0e;

    /* Surface Colors */
    --mathblock-bg: #f8fafc;
    --mathblock-surface: #ffffff;

    /* Text Colors */
    --mathblock-text: #1e293b;
    --mathblock-text-secondary: #64748b;
    --mathblock-text-muted: #94a3b8;

    /* Border & Dividers */
    --mathblock-border: #e2e8f0;
    --mathblock-border-light: #f1f5f9;

    /* Shadows */
    --mathblock-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --mathblock-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);

    /* Spacing */
    --mathblock-gap: 1rem;
    --mathblock-radius: 12px;
    --mathblock-radius-sm: 8px;
    --mathblock-radius-lg: 16px;
    --mathblock-radius-full: 9999px;

    /* Transitions */
    --mathblock-transition: 150ms ease;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --mathblock-bg: #0f172a;
        --mathblock-surface: #1e293b;
        --mathblock-text: #f1f5f9;
        --mathblock-text-secondary: #94a3b8;
        --mathblock-text-muted: #64748b;
        --mathblock-border: #334155;
        --mathblock-border-light: #1e293b;
        --mathblock-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
        --mathblock-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
    }
}

/* ==========================================================================
   Base Container
   ========================================================================== */

.mathblock {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100%;
    padding: var(--mathblock-gap);
    background: var(--mathblock-bg);
    color: var(--mathblock-text);
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ==========================================================================
   Screens
   ========================================================================== */

.mathblock__screen {
    display: none;
    width: 100%;
    max-width: 600px;
    animation: mathblock-fade-in 0.3s ease;
}

.mathblock__screen--active {
    display: block;
}

@keyframes mathblock-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Card
   ========================================================================== */

.mathblock__card {
    background: var(--mathblock-surface);
    border-radius: var(--mathblock-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--mathblock-shadow-lg);
    border: 1px solid var(--mathblock-border);
}

/* ==========================================================================
   Header (Level Screen)
   ========================================================================== */

.mathblock__header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.mathblock__title {
    font-size: clamp(1.5rem, 5vw, 2rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--mathblock-primary), #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 0.5rem 0;
}

.mathblock__subtitle {
    font-size: 1rem;
    color: var(--mathblock-text-secondary);
    margin: 0;
}

/* ==========================================================================
   Level Selector
   ========================================================================== */

.mathblock__level-selector {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.mathblock__level-btn {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    border: none;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    cursor: pointer;
    transition: transform var(--mathblock-transition), box-shadow var(--mathblock-transition);
    box-shadow: var(--mathblock-shadow);
}

.mathblock__level-btn:hover {
    transform: scale(1.1);
}

.mathblock__level-btn--active {
    transform: scale(1.15);
    box-shadow: 0 4px 20px rgba(21, 174, 191, 0.35);
}

/* ==========================================================================
   Level Details
   ========================================================================== */

.mathblock__level-details {
    background: var(--mathblock-primary-light);
    border-radius: var(--mathblock-radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(21, 174, 191, 0.15);
}

.mathblock__level-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: var(--mathblock-radius-full);
    color: white;
    font-weight: 700;
    font-size: 0.8rem;
    margin-bottom: 0.75rem;
}

.mathblock__level-details h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    color: var(--mathblock-text);
}

.mathblock__level-details > p {
    color: var(--mathblock-text-secondary);
    margin: 0 0 1rem 0;
    line-height: 1.5;
    font-size: 0.875rem;
}

.mathblock__info-box {
    background: var(--mathblock-surface);
    border-radius: var(--mathblock-radius-sm);
    padding: 0.875rem;
    margin-bottom: 0.75rem;
}

.mathblock__info-box:last-child {
    margin-bottom: 0;
}

.mathblock__info-box h3 {
    font-weight: 700;
    color: var(--mathblock-primary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mathblock__info-box h3::before {
    content: '';
    display: inline-block;
    width: 0.875rem;
    height: 0.875rem;
    background: var(--mathblock-primary);
    border-radius: 3px;
}

.mathblock__info-box p {
    font-size: 0.8rem;
    margin: 0;
    color: var(--mathblock-text-secondary);
    line-height: 1.5;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.mathblock__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--mathblock-radius-sm);
    cursor: pointer;
    transition: all var(--mathblock-transition);
}

.mathblock__btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.mathblock__btn--primary {
    background: linear-gradient(135deg, var(--mathblock-primary), #4ecdc4);
    color: white;
    box-shadow: 0 4px 14px rgba(21, 174, 191, 0.3);
}

.mathblock__btn--primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(21, 174, 191, 0.4);
}

.mathblock__btn--secondary {
    background: var(--mathblock-border-light);
    color: var(--mathblock-text);
}

.mathblock__btn--secondary:hover:not(:disabled) {
    background: var(--mathblock-border);
}

.mathblock__btn--success {
    background: linear-gradient(135deg, var(--mathblock-success), #00cec9);
    color: white;
}

.mathblock__btn--success:hover:not(:disabled) {
    transform: translateY(-2px);
}

.mathblock__btn--danger {
    background: var(--mathblock-danger);
    color: white;
}

.mathblock__btn--danger:hover:not(:disabled) {
    background: #d35400;
    transform: translateY(-1px);
}

.mathblock__btn--full {
    width: 100%;
}

.mathblock__btn-group {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.mathblock__btn-group .mathblock__btn {
    flex: 1;
    max-width: 180px;
}

/* ==========================================================================
   Game Header
   ========================================================================== */

.mathblock__game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--mathblock-border);
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.mathblock__stats {
    display: flex;
    gap: 1.5rem;
}

.mathblock__stat {
    text-align: center;
}

.mathblock__stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--mathblock-primary);
    line-height: 1;
}

.mathblock__stat-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--mathblock-text-muted);
    text-transform: uppercase;
    margin-top: 0.25rem;
}

.mathblock__streak {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    background: var(--mathblock-warning-light);
    padding: 0.375rem 0.75rem;
    border-radius: var(--mathblock-radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--mathblock-accent);
}

.mathblock__streak-icon {
    font-size: 1rem;
}

/* ==========================================================================
   Game Content
   ========================================================================== */

.mathblock__game-content {
    display: flex;
    flex-direction: column;
}

.mathblock__question {
    text-align: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--mathblock-text-secondary);
    margin: 0 0 1rem 0;
}

/* ==========================================================================
   Success Banner
   ========================================================================== */

.mathblock__success {
    background: linear-gradient(135deg, var(--mathblock-success), #00cec9);
    color: white;
    border-radius: var(--mathblock-radius);
    padding: 1.25rem;
    text-align: center;
    margin-bottom: 1rem;
    animation: mathblock-pop 0.3s ease;
}

@keyframes mathblock-pop {
    0% { transform: scale(0.8); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.mathblock__success-icon {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.mathblock__success-text {
    font-size: 1.25rem;
    font-weight: 800;
}

.mathblock__success-sub {
    font-size: 0.8rem;
    opacity: 0.9;
}

/* ==========================================================================
   Blocks Area
   ========================================================================== */

.mathblock__blocks-area {
    background: var(--mathblock-primary-light);
    border-radius: var(--mathblock-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 180px;
    border: 1px solid rgba(21, 174, 191, 0.15);
}

.mathblock__blocks-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
}

.mathblock__block-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

/* Hundred Block */
.mathblock__hundred {
    width: 4rem;
    height: 4rem;
    background: var(--mathblock-hundred-bg);
    border: 2px solid var(--mathblock-hundred-border);
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    display: grid;
    grid-template: repeat(10, 1fr) / repeat(10, 1fr);
    padding: 2px;
    gap: 1px;
}

.mathblock__hundred-cell {
    background: var(--mathblock-hundred-cell);
}

/* Ten Block */
.mathblock__ten {
    width: 4rem;
    height: 1.25rem;
    background: var(--mathblock-ten-bg);
    border: 2px solid var(--mathblock-ten-border);
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    display: flex;
    padding: 2px;
    gap: 1px;
}

.mathblock__ten-cell {
    flex: 1;
    background: var(--mathblock-ten-cell);
}

/* One Block */
.mathblock__one {
    width: 1.25rem;
    height: 1.25rem;
    background: var(--mathblock-one-bg);
    border: 2px solid var(--mathblock-one-border);
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   Answer Area
   ========================================================================== */

.mathblock__answer-area {
    text-align: center;
}

.mathblock__answer-input {
    width: 100%;
    max-width: 200px;
    margin: 0 auto 0.5rem;
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    padding: 0.75rem;
    border: 3px solid var(--mathblock-border);
    border-radius: var(--mathblock-radius-sm);
    display: block;
    background: var(--mathblock-surface);
    color: var(--mathblock-text);
    transition: border-color var(--mathblock-transition), box-shadow var(--mathblock-transition);
}

.mathblock__answer-input:focus {
    outline: none;
    border-color: var(--mathblock-primary);
    box-shadow: 0 0 0 3px var(--mathblock-primary-light);
}

.mathblock__answer-input--error {
    border-color: var(--mathblock-danger);
    background: var(--mathblock-danger-light);
}

.mathblock__error {
    color: var(--mathblock-danger);
    font-weight: 600;
    font-size: 0.8rem;
    margin-bottom: 0.75rem;
}

/* ==========================================================================
   Results Screen
   ========================================================================== */

.mathblock__results-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.mathblock__results-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.mathblock__results-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--mathblock-primary);
    margin: 0 0 0.25rem 0;
}

.mathblock__results-subtitle {
    color: var(--mathblock-text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

/* ==========================================================================
   Results Grid
   ========================================================================== */

.mathblock__results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.mathblock__result-card {
    padding: 1rem;
    border-radius: var(--mathblock-radius-sm);
    text-align: center;
}

.mathblock__result-card--score {
    background: var(--mathblock-primary-light);
}

.mathblock__result-card--score .mathblock__result-value {
    color: var(--mathblock-primary);
}

.mathblock__result-card--level {
    background: rgba(59, 130, 246, 0.1);
}

.mathblock__result-card--level .mathblock__result-value {
    color: #2563eb;
}

.mathblock__result-card--correct {
    background: var(--mathblock-success-light);
}

.mathblock__result-card--correct .mathblock__result-value {
    color: var(--mathblock-success);
}

.mathblock__result-card--accuracy {
    background: var(--mathblock-warning-light);
}

.mathblock__result-card--accuracy .mathblock__result-value {
    color: var(--mathblock-accent);
}

.mathblock__result-value {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
}

.mathblock__result-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--mathblock-text-muted);
    text-transform: uppercase;
    margin-top: 0.25rem;
}

/* ==========================================================================
   Summary
   ========================================================================== */

.mathblock__summary {
    background: var(--mathblock-primary-light);
    border-radius: var(--mathblock-radius-sm);
    padding: 1rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.mathblock__summary h3 {
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    color: var(--mathblock-text);
    font-size: 0.8rem;
    text-transform: uppercase;
}

.mathblock__summary p {
    color: var(--mathblock-text-secondary);
    font-size: 0.875rem;
    margin: 0;
    line-height: 1.5;
}

/* ==========================================================================
   Results Actions
   ========================================================================== */

.mathblock__results-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.mathblock__results-actions .mathblock__btn {
    flex: 1;
    max-width: 180px;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 640px) {
    .mathblock {
        padding: 0.75rem;
    }

    .mathblock__card {
        padding: 1rem;
        border-radius: var(--mathblock-radius);
    }

    .mathblock__hundred {
        width: 3rem;
        height: 3rem;
    }

    .mathblock__ten {
        width: 3rem;
    }

    .mathblock__stats {
        gap: 1rem;
    }

    .mathblock__stat-value {
        font-size: 1.25rem;
    }

    .mathblock__answer-input {
        font-size: 1.5rem;
        max-width: 150px;
    }

    .mathblock__result-value {
        font-size: 1.5rem;
    }

    .mathblock__btn-group .mathblock__btn,
    .mathblock__results-actions .mathblock__btn {
        max-width: none;
        flex-basis: 100%;
    }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .mathblock__screen {
        animation: none;
    }

    .mathblock__success {
        animation: none;
    }

    .mathblock__level-btn,
    .mathblock__btn {
        transition: none;
    }
}

/* ==========================================================================
   RTL Support
   ========================================================================== */

[dir="rtl"] .mathblock__info-box h3::before {
    order: 1;
}

[dir="rtl"] .mathblock__btn {
    flex-direction: row-reverse;
}

[dir="rtl"] .mathblock__streak {
    flex-direction: row-reverse;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .mathblock {
        background: white;
        padding: 0;
    }

    .mathblock__card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}