/* Word Search - Mobile-First Styles */

:root {
    --color-primary: #6366F1;
    --color-primary-dark: #4F46E5;
    --color-secondary: #8B5CF6;
    --color-success: #10B981;
    --color-success-light: #D1FAE5;
    --color-selecting: #FCD34D;
    --color-selecting-light: #FEF3C7;
    --color-bg: #F8FAFC;
    --color-grid-bg: #FFFFFF;
    --color-text: #1E293B;
    --color-text-light: #64748B;
    --color-border: #E2E8F0;
    --color-found: #10B981;

    --cell-size: 28px;
    --grid-gap: 2px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition-speed: 0.2s;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
}

/* Screen Management */
.screen {
    display: none;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 16px;
}

.screen.active {
    display: flex;
    flex-direction: column;
}

/* Theme Selection Screen */
#screen-themes {
    padding-top: 24px;
}

.header {
    text-align: center;
    margin-bottom: 24px;
}

.title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.title-icon {
    font-size: 1.5rem;
}

.subtitle {
    color: var(--color-text-light);
    margin-top: 8px;
    font-size: 1rem;
}

.themes-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

.theme-card {
    background: var(--color-grid-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: all var(--transition-speed);
    touch-action: manipulation;
}

.theme-card:hover,
.theme-card:active {
    border-color: var(--color-primary);
    transform: scale(1.02);
}

.theme-card-emoji {
    font-size: 2rem;
}

.theme-card-info {
    flex: 1;
}

.theme-card-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
}

.theme-card-count {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.theme-card-best {
    font-size: 0.875rem;
    color: var(--color-success);
    font-weight: 500;
}

.stats-summary {
    margin-top: auto;
    padding-top: 16px;
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Game Screen */
#screen-game {
    padding: 12px;
    gap: 12px;
}

.game-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
}

.btn-icon {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--color-text);
    border-radius: var(--radius-sm);
    transition: background var(--transition-speed);
    touch-action: manipulation;
}

.btn-icon:hover,
.btn-icon:active {
    background: var(--color-border);
}

.game-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-emoji {
    font-size: 1.5rem;
}

.theme-name {
    font-weight: 600;
    font-size: 1rem;
}

.timer {
    font-family: 'SF Mono', Monaco, 'Consolas', monospace;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-grid-bg);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.game-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Grid */
.grid-container {
    background: var(--color-grid-bg);
    border-radius: var(--radius-md);
    padding: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
}

.grid {
    display: grid;
    gap: var(--grid-gap);
    margin: 0 auto;
}

.cell {
    width: var(--cell-size);
    height: var(--cell-size);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'SF Mono', Monaco, 'Consolas', monospace;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-bg);
    border-radius: 4px;
    transition: background var(--transition-speed), transform var(--transition-speed);
    cursor: pointer;
}

.cell.selecting {
    background: var(--color-selecting);
    transform: scale(1.1);
    z-index: 1;
}

.cell.found {
    background: var(--color-success-light);
    color: var(--color-success);
}

.cell.found.selecting {
    background: var(--color-selecting-light);
}

/* Words List */
.words-section {
    background: var(--color-grid-bg);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.words-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: 8px;
}

.words-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
}

.word-item {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-speed);
}

.word-item.found {
    color: var(--color-success);
    text-decoration: line-through;
}

.word-checkbox {
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
}

.word-item.found .word-checkbox {
    background: var(--color-success);
    border-color: var(--color-success);
}

.word-checkbox svg {
    width: 12px;
    height: 12px;
    stroke: white;
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.word-item.found .word-checkbox svg {
    opacity: 1;
}

/* Game Actions */
.game-actions {
    display: flex;
    justify-content: center;
    padding: 8px 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-speed);
    touch-action: manipulation;
    min-height: 48px;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover,
.btn-primary:active {
    background: var(--color-primary-dark);
}

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-secondary:hover,
.btn-secondary:active {
    background: var(--color-border);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover,
.btn-outline:active {
    background: var(--color-primary);
    color: white;
}

/* Victory Screen */
#screen-victory {
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

.victory-content {
    background: var(--color-grid-bg);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    width: 100%;
    max-width: 320px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.victory-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
}

.victory-emoji {
    font-size: 2rem;
    animation: bounce 0.6s ease infinite alternate;
}

.victory-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
}

@keyframes bounce {
    from { transform: translateY(0); }
    to { transform: translateY(-8px); }
}

.victory-stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 32px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.stat-value {
    font-family: 'SF Mono', Monaco, 'Consolas', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.victory-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Confetti */
#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
}

/* Responsive - Tablet and up */
@media (min-width: 480px) {
    :root {
        --cell-size: 32px;
    }

    .grid-container {
        padding: 12px;
    }
}

@media (min-width: 768px) {
    :root {
        --cell-size: 44px;
    }

    .cell {
        font-size: 1.125rem;
    }

    .screen {
        padding: 24px;
        max-width: 600px;
        margin: 0 auto;
    }

    .title {
        font-size: 2rem;
    }

    .themes-container {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }

    .game-container {
        flex-direction: row;
        align-items: flex-start;
    }

    .grid-container {
        flex-shrink: 0;
    }

    .words-section {
        flex: 1;
    }

    .words-list {
        flex-direction: column;
    }
}

@media (min-width: 1024px) {
    :root {
        --cell-size: 48px;
    }

    .cell {
        font-size: 1.25rem;
    }

    .screen {
        max-width: 800px;
    }
}

/* Selection line overlay */
.selection-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 10;
}

.selection-line {
    position: absolute;
    height: 4px;
    background: var(--color-selecting);
    border-radius: 2px;
    transform-origin: left center;
    opacity: 0.8;
}

/* Pulse animation for found cells */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

.cell.just-found {
    animation: pulse 0.3s ease;
}

/* Toast notification */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-text);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 500;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 100;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}