/* ===================================
   Modern Wordle - Dark Theme
   =================================== */

/* CSS Variables */
:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #121218;
    --bg-tertiary: #1a1a24;
    --bg-elevated: #202030;
    
    /* Accent Colors */
    --accent-primary: #3BD380;
    --accent-hover: #2DB86A;
    --accent-active: #2DB86A;
    
    /* Text Colors */
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    
    /* Tile States */
    --tile-empty: #2a2a3c;
    --tile-filled: #32324a;
    --tile-correct: #3BD380;
    --tile-present: #f59e0b;
    --tile-absent: #3f3f46;
    
    /* Border Colors */
    --border-default: #27272a;
    --border-focus: #3f3f46;
    --border-hover: #52525b;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

/* ===================================
   Global Styles
   =================================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif !important;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* ===================================
   Header Styles
   =================================== */

.game-header {
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-default);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xs) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-actions {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-md);
    width: 100%;
    max-width: 900px;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.27rem var(--spacing-lg);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    min-height: 1.67rem;
}

.action-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
    color: var(--accent-primary);
}

.action-btn:active {
    transform: translateY(0);
}

.action-btn i,
.action-btn .btn-icon {
    font-size: 1rem;
    width: 1rem;
    height: 1rem;
}

.btn-icon {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
}

.new-game-btn .btn-icon {
    width: 1.125rem;
    height: 1.125rem;
    margin-right: 0.5rem;
}

.modal-close .btn-icon {
    width: 1.5rem;
    height: 1.5rem;
}

.btn .btn-icon {
    width: 1.125rem;
    height: 1.125rem;
    margin-right: 0.5rem;
}

.action-btn.timer-active {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.action-btn.timer-active:hover {
    background: var(--accent-hover);
}

/* ===================================
   Main Game Container
   =================================== */

.game-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 13px var(--spacing-sm) 1.5625rem;
    gap: 1rem;
    max-width: 540px;
    margin: 0 auto;
    width: 100%;
}

/* ===================================
   Game Board
   =================================== */

.board-container {
    width: 100%;
    max-width: clamp(280px, calc(345px * (var(--word-length, 5) / 5)), 690px);
}

.game-board {
    display: grid;
    grid-template-rows: repeat(6, 1fr);
    gap: 0.5rem;
    padding: var(--spacing-sm);
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.board-row {
    display: grid;
    grid-template-columns: repeat(var(--word-length, 5), 1fr);
    gap: 0.5rem;
}

.tile {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Arial Black', 'Arial Bold', Arial, 'Helvetica Neue', sans-serif !important;
    font-size: clamp(1.4rem, calc(2rem * (5 / var(--word-length, 5))), 2.2rem);
    font-weight: 900 !important;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    background: var(--tile-empty);
    border: 2px solid var(--border-default);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: all var(--transition-normal);
}

.tile.filled {
    background: var(--tile-filled);
    border-color: var(--border-focus);
    animation: pop 0.1s ease;
}

.tile.correct {
    background: var(--tile-correct);
    border-color: var(--tile-correct);
    color: white;
}

.tile.present {
    background: var(--tile-present);
    border-color: var(--tile-present);
    color: white;
}

.tile.absent {
    background: var(--tile-absent);
    border-color: var(--tile-absent);
    color: var(--text-secondary);
}

/* Next-input caret: blinking bar on the empty cell where the next letter goes */
.tile.tile-caret {
    position: relative;
}

.tile.tile-caret::after {
    content: "" !important;
    position: absolute !important;
    left: 50% !important;
    top: 50% !important;
    width: 2px !important;
    height: 60% !important;
    max-height: 2.2rem !important;
    border-radius: 1px !important;
    background: #fff !important;
    pointer-events: none !important;
    -webkit-transform: translate(-50%, -50%) !important;
    transform: translate(-50%, -50%) !important;
    -webkit-animation: caretBlink 1.2s infinite !important;
    animation: caretBlink 1.2s infinite !important;
    z-index: 10 !important;
}

@-webkit-keyframes caretBlink {
    0%, 40% { opacity: 1; }
    50%, 90% { opacity: 0; }
    100% { opacity: 1; }
}

@keyframes caretBlink {
    0%, 40% { opacity: 1; }
    50%, 90% { opacity: 0; }
    100% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
    .tile.tile-caret::after {
        -webkit-animation: none;
        animation: none;
        opacity: 0.85;
    }
}

/* ===================================
   Keyboard
   =================================== */

.keyboard-container {
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-xs);
}

.keyboard {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
}

.new-game-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--accent-primary);
    border: 1px solid var(--accent-hover);
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(59, 211, 128, 0.3);
    margin: 0 auto;
}

.new-game-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 211, 128, 0.5);
}

.new-game-btn:active {
    transform: translateY(0);
    background: var(--accent-active);
}

.keyboard-row {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    width: 100%;
}

.key {
    min-width: 3.2rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--spacing-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    flex-shrink: 0;
}

.key:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.key:active {
    transform: translateY(0);
}

.key.wide {
    min-width: 5rem;
    font-size: 0.85rem;
}

.key.correct {
    background: var(--tile-correct);
    border-color: var(--tile-correct);
    color: white;
}

.key.present {
    background: var(--tile-present);
    border-color: var(--tile-present);
    color: white;
}

.key.absent {
    background: var(--tile-absent);
    border-color: var(--tile-absent);
    color: white;
}

/* Delete Key Icon */
.delete-key {
    padding: 0;
}

.delete-icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    transition: transform var(--transition-fast);
}

.delete-key:hover .delete-icon {
    transform: scale(1.05);
}

.delete-key:active .delete-icon {
    transform: scale(0.95);
}

/* ===================================
   Toast Notification
   =================================== */

.toast-notification {
    position: fixed;
    top: 5rem;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: var(--bg-elevated);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    transition: all var(--transition-normal);
    pointer-events: none;
}

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

.toast-notification p {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

/* ===================================
   Confetti Canvas - Ensure it's on top
   =================================== */

body > canvas {
    position: fixed !important;
    z-index: 9999 !important;
    pointer-events: none !important;
}

/* ===================================
   Modal Styles
   =================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: var(--spacing-md);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.modal-overlay.visible {
    display: flex;
    opacity: 1;
}

.modal-container {
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    transform: rotate(90deg);
}

.modal-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-default);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-content {
    padding: var(--spacing-lg) var(--spacing-xl);
}

/* Result Section - ???????????/????????? */
.result-section {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(59, 211, 128, 0.1) 0%, rgba(45, 184, 106, 0.1) 100%);
    border-radius: var(--radius-xl);
    border: 2px solid rgba(59, 211, 128, 0.3);
    display: none;
    text-align: center;
}

.result-section.visible {
    display: block;
}

.result-message {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
    line-height: 1.4;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-default);
    transition: all var(--transition-fast);
}

.stat-item:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Distribution Chart */
.distribution-section {
    margin-bottom: var(--spacing-lg);
}

.distribution-section h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.distribution-chart {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.distribution-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.row-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    width: 1.5rem;
    text-align: center;
}

.bar-container {
    flex: 1;
    height: 1.75rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-default);
}

.bar-fill {
    height: 100%;
    min-width: 2rem;
    background: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: var(--spacing-sm);
    transition: width var(--transition-slow);
}

.bar-value {
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
}

/* ????????????????????????????????????????? */
.game-result .distribution-section {
    display: none !important;
}

/* ??????????? - ???????????????????????????PC? */
.social-share-icons {
    display: none; /* ????????? */
}

.game-result .social-share-icons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-top: var(--spacing-md);
}

.social-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: white;
}

.social-icon svg {
    display: block;
    width: 20px;
    height: 20px;
}

.social-icon:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.social-icon:active {
    transform: translateY(-1px) scale(1.05);
}

.social-icon.twitter {
    background: #000000;
}

.social-icon.twitter:hover {
    background: #1a1a1a;
}

.social-icon.facebook {
    background: #1877f2;
}

.social-icon.facebook:hover {
    background: #0c63d4;
}

.social-icon.reddit {
    background: #ff4500;
}

.social-icon.reddit:hover {
    background: #e03d00;
}

.social-icon.email {
    background: #6b7280;
}

.social-icon.email:hover {
    background: #4b5563;
}

/* Modal Actions */
.modal-actions {
    display: flex;
    gap: var(--spacing-md);
}

.btn {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

/* ?????????????????????????? */
.game-result .modal-actions {
    flex-direction: column;
    padding-top: var(--spacing-lg);
}

.game-result .btn {
    width: 100%;
}

/* ??????????????????????? - ?????????????? */
.game-result #shareResultBtn {
    order: -1; /* ?????????? */
    background: linear-gradient(135deg, #3BD380 0%, #2DB86A 100%);
    color: white;
    font-size: 1.1rem;
    padding: 1rem var(--spacing-xl);
    box-shadow: 0 4px 15px rgba(59, 211, 128, 0.4);
}

.game-result #shareResultBtn:hover {
    background: linear-gradient(135deg, #2DB86A 0%, #2DB86A 100%);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(59, 211, 128, 0.5);
}

.game-result #shareResultBtn:active {
    transform: translateY(-1px);
}

.game-result #shareResultBtn i {
    font-size: 1.2rem;
}

/* ???????????????????????????? - ?? */
.game-result #playAgainBtn {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-default);
    font-size: 0.95rem;
    padding: 0.75rem var(--spacing-lg);
}

.game-result #playAgainBtn:hover {
    background: var(--bg-secondary);
    border-color: var(--border-hover);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.game-result #playAgainBtn:active {
    transform: translateY(0);
}

/* ?????????????????????????? */
.btn-primary {
    background: var(--accent-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    background: var(--accent-active);
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.btn-secondary:active {
    transform: translateY(0);
}

/* ===================================
   Animations
   =================================== */

@keyframes pop {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes flip {
    0% {
        transform: rotateX(0);
    }
    50% {
        transform: rotateX(90deg);
    }
    100% {
        transform: rotateX(0);
    }
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

@media (max-width: 1024px) {
    .header-content {
        padding: var(--spacing-xs) var(--spacing-lg);
    }
    
    .header-actions {
        gap: var(--spacing-sm);
    }
    
    .action-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        min-height: 2rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    .header-actions {
        max-width: 100%;
    }
    
    .btn-text {
        display: none;
    }
    
    /* Timer button always shows text when active */
    .timer-active .btn-text {
        display: inline-block;
        font-size: 0.95rem;
        font-weight: 700;
    }
    
    .action-btn {
        padding: var(--spacing-sm);
        min-height: 1.83rem;
        font-size: 1.125rem;
    }
    
    .action-btn i,
    .action-btn .btn-icon {
        font-size: 1.25rem;
        width: 1.25rem;
        height: 1.25rem;
    }
    
    .game-container {
        padding: 13px var(--spacing-sm) 0.9375rem;
        gap: 0.75rem;
        max-width: 480px;
    }
    
    .board-container {
        max-width: 360px;
    }
    
    .keyboard-container {
        max-width: 360px;
        padding: 0;
    }
    
    .new-game-btn {
        font-size: 0.95rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .game-board {
        padding: var(--spacing-sm);
    }
    
    .tile {
        font-size: clamp(1.2rem, calc(1.8rem * (5 / var(--word-length, 5))), 2rem);
        font-weight: 900;
    }
    
    .key {
        min-width: 2rem;
        height: 2rem;
        padding: 0 var(--spacing-sm);
        font-size: 0.75rem;
    }
    
    .key.wide {
        min-width: 3rem;
    }
    
    .delete-icon {
        width: 20px;
        height: 20px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .modal-container {
        max-width: 90%;
    }
    
    .custom-word-input {
        font-size: 1rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

@media (max-width: 640px) {
    .header-content {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .header-actions {
        grid-template-columns: repeat(5, 1fr);
        gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: var(--spacing-xs);
    }
    
    .header-actions {
        grid-template-columns: repeat(5, 1fr);
        gap: var(--spacing-xs);
    }
    
    .action-btn {
        padding: var(--spacing-xs);
        min-height: 1.67rem;
        font-size: 0.875rem;
    }
    
    .action-btn i,
    .action-btn .btn-icon {
        font-size: 1rem;
        width: 1rem;
        height: 1rem;
    }
    
    /* ???????????????????????? */
    .game-result .social-share-icons {
        display: none !important;
    }
    
    /* ??????????????????????????????? */
    .game-result #shareResultBtn {
        font-size: 1rem;
        padding: 0.9rem var(--spacing-lg);
    }
    
    .game-result #shareResultBtn i {
        font-size: 1.1rem;
    }
    
    .game-result #playAgainBtn {
        font-size: 0.9rem;
        padding: 0.7rem var(--spacing-md);
    }
    
    .result-message {
        font-size: 1.25rem;
    }
    
    .result-section {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }
    
    .game-container {
        padding: 13px var(--spacing-sm) 0.5625rem;
        gap: 0.75rem;
        max-width: 420px;
    }
    
    .board-container {
        max-width: 315px;
    }
    
    .keyboard-container {
        max-width: 315px;
        padding: 0;
    }
    
    .new-game-btn {
        font-size: 0.875rem;
        padding: var(--spacing-sm);
    }
    
    .game-board {
        padding: var(--spacing-sm);
    }
    
    .tile {
        font-size: clamp(1rem, calc(1.5rem * (5 / var(--word-length, 5))), 1.8rem);
        font-weight: 900;
    }
    
    .key {
        min-width: 1.75rem;
        height: 1.83rem;
        font-size: 0.7rem;
    }
    
    .delete-icon {
        width: 18px;
        height: 18px;
    }
    
    .modal-description {
        font-size: 0.875rem;
    }
    
    .custom-word-input {
        font-size: 0.875rem;
        padding: var(--spacing-sm);
    }
}

/* ===================================
   Custom Scrollbar (Dark Theme)
   =================================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* ===================================
   SweetAlert2 Dark Theme Override
   =================================== */

.swal2-popup {
    background: var(--bg-elevated) !important;
    border: 1px solid var(--border-default) !important;
    border-radius: var(--radius-xl) !important;
}

.swal2-title {
    color: var(--text-primary) !important;
}

.swal2-html-container {
    color: var(--text-secondary) !important;
}

.swal2-confirm {
    background: var(--accent-primary) !important;
    border-radius: var(--radius-md) !important;
}

.swal2-confirm:hover {
    background: var(--accent-hover) !important;
}

.swal2-icon.swal2-info {
    border-color: #3BD380 !important;
    color: #3BD380 !important;
}

.swal2-icon.swal2-success {
    border-color: #3BD380 !important;
    color: #3BD380 !important;
}

.swal2-close {
    color: var(--text-secondary) !important;
}

.swal2-close:hover {
    color: var(--text-primary) !important;
}

/* ===================================
   Create Game Modal Styles
   =================================== */

.modal-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    line-height: 1.5;
}

.input-group {
    margin-bottom: var(--spacing-lg);
}

.custom-word-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    text-transform: uppercase;
    text-align: center;
    letter-spacing: 0.1em;
    transition: all var(--transition-fast);
    outline: none;
}

.custom-word-input::placeholder {
    color: var(--text-tertiary);
    text-transform: none;
    letter-spacing: normal;
    font-weight: 400;
}

.custom-word-input:focus {
    border-color: var(--accent-primary);
    background: var(--bg-secondary);
    box-shadow: 0 0 0 3px rgba(59, 211, 128, 0.1);
}

.custom-word-input.error {
    border-color: #ef4444;
    animation: shake 0.3s ease;
}

.input-error {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: var(--spacing-sm);
    min-height: 1.25rem;
    text-align: center;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* =====================================================
   LIGHT THEME  (body.light-theme)
   Elegant, refined ? overrides all dark CSS variables
   ===================================================== */
body.light-theme {
    --bg-primary:   #f5f6fa;
    --bg-secondary: #eef0f6;
    --bg-tertiary:  #e6e9f2;
    --bg-elevated:  #ffffff;

    --accent-primary: #16a34a;
    --accent-hover:   #15803d;
    --accent-active:  #166534;

    --text-primary:   #1e2330;
    --text-secondary: #4b5563;
    --text-tertiary:  #9ca3af;

    /* Tiles */
    --tile-empty:   #ffffff;
    --tile-filled:  #f0f2f8;
    --tile-correct: #4caf50;
    --tile-present: #f5a623;
    --tile-absent:  #9aa5b4;

    /* Borders */
    --border-default: #d0d5e0;
    --border-focus:   #9ca3af;
    --border-hover:   #6b7280;

    /* Shadows ?? softer for light bg */
    --shadow-sm: 0 1px 4px rgba(0,0,0,.07);
    --shadow-md: 0 3px 10px rgba(0,0,0,.09);
    --shadow-lg: 0 6px 20px rgba(0,0,0,.10);
    --shadow-glow: 0 0 16px rgba(22,163,74,.15);
}

body.light-theme {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Game board */
body.light-theme .game-board {
    background: transparent;
    box-shadow: none;
    border: none;
}

/* Tiles ?? empty state: white card with subtle border */
body.light-theme .tile {
    background: #ffffff;
    border-color: #cbd2e0;
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
body.light-theme .tile.filled {
    background: #f0f2f8;
    border-color: #9ba8c0;
    color: var(--text-primary);
}
body.light-theme .tile.correct {
    background: #4caf50;
    border-color: #4caf50;
    color: #ffffff;
}
body.light-theme .tile.present {
    background: #f5a623;
    border-color: #f5a623;
    color: #ffffff;
}
body.light-theme .tile.absent {
    background: #9aa5b4;
    border-color: #9aa5b4;
    color: #ffffff;
}

/* Caret blink on light */
body.light-theme .tile.tile-caret::after {
    background: #374151 !important;
}

/* Keyboard */
body.light-theme .key {
    background: #e8ecf5;
    border-color: #c8cfe0;
    color: #1e2330;
    box-shadow: 0 2px 0 #bbc3d8, 0 1px 3px rgba(0,0,0,.08);
}
body.light-theme .key:hover {
    background: #dce1ef;
    border-color: #9ba8c0;
    box-shadow: 0 3px 0 #b0b9cc, 0 2px 5px rgba(0,0,0,.10);
}
body.light-theme .key:active {
    transform: translateY(1px);
    box-shadow: 0 1px 0 #b0b9cc;
}
body.light-theme .key.correct {
    background: #4caf50;
    border-color: #3d9142;
    color: #ffffff;
    box-shadow: 0 2px 0 #357a38;
}
body.light-theme .key.present {
    background: #f5a623;
    border-color: #d4891a;
    color: #ffffff;
    box-shadow: 0 2px 0 #b87415;
}
body.light-theme .key.absent {
    background: #9aa5b4;
    border-color: #7f8fa0;
    color: #ffffff;
    box-shadow: 0 2px 0 #6b7a8d;
}
body.light-theme .delete-icon {
    color: #1e2330;
}

/* Header */
body.light-theme .game-header {
    background: #f5f6fa;
    border-bottom: 1px solid #dde2ed;
    box-shadow: none;
}
body.light-theme .action-btn {
    background: transparent;
    border: none;
    box-shadow: none;
    color: #6b7280;
    font-weight: 500;
    transition: color 0.15s ease, background 0.15s ease;
}
body.light-theme .action-btn:hover {
    background: rgba(30, 168, 94, 0.08);
    border: none;
    box-shadow: none;
    color: #1e2330;
    transform: none;
}
body.light-theme .action-btn:hover .btn-icon {
    color: #4caf50;
}
body.light-theme .action-btn:active {
    background: rgba(30, 168, 94, 0.14);
    color: #16a34a;
}
body.light-theme .action-btn.timer-active {
    background: #16a34a;
    color: #ffffff;
}

/* New Game button */
body.light-theme .new-game-btn {
    box-shadow: 0 2px 8px rgba(22,163,74,.25);
}

/* Toast */
body.light-theme .toast-notification {
    background: #1e2330;
    border-color: #374151;
    box-shadow: 0 4px 16px rgba(0,0,0,.25);
    color: #f3f4f6;
}
body.light-theme .toast-notification p {
    color: #f3f4f6;
}

/* Modals */
body.light-theme .modal-overlay {
    background: rgba(0,0,0,.30);
}
body.light-theme .modal-container {
    background: #ffffff;
    border: 1px solid #e2e6f0;
    box-shadow: 0 16px 48px rgba(0,0,0,.14);
}
body.light-theme .modal-container h2,
body.light-theme .modal-container h3 {
    color: #1e2330;
}
body.light-theme .modal-description,
body.light-theme .stat-label {
    color: #4b5563;
}
body.light-theme .stat-value {
    color: #1e2330;
}
body.light-theme .modal-close {
    color: #6b7280;
}
body.light-theme .modal-close:hover {
    background: #f3f5fc;
    color: #374151;
}

/* Distribution bars */
body.light-theme .bar-container {
    background: #e8ecf5;
}
body.light-theme .bar-fill {
    background: #16a34a;
}
body.light-theme .row-label {
    color: #4b5563;
}

/* Custom word input */
body.light-theme .custom-word-input {
    background: #f3f5fc;
    border-color: #d0d5e0;
    color: #1e2330;
}
body.light-theme .custom-word-input:focus {
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(22,163,74,.12);
}

/* Social share buttons */
body.light-theme .social-icon {
    background: #f3f5fc;
    border-color: #d0d5e0;
    color: #374151;
}
body.light-theme .social-icon:hover {
    background: #e8ecf5;
}

/* ?? Mode dropdown ??????????????????????????????????????? */
.mode-dropdown-wrap {
    position: relative;
}
.mode-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 130px;
    background: var(--bg-secondary, #1e2030);
    border: 1px solid var(--border-default, #3a3f4b);
    border-radius: 10px;
    padding: 4px;
    z-index: 999;
    box-shadow: 0 8px 24px rgba(0,0,0,.35);
}
.mode-dropdown.open {
    display: block;
}
.mode-dropdown-group {
    display: flex;
    flex-direction: column;
}
.mode-dropdown-divider {
    height: 1px;
    background: var(--border-default, #3a3f4b);
    margin: 4px 0;
}
.mode-dropdown-item {
    width: 100%;
    text-align: left;
    padding: 7px 12px;
    background: none;
    border: none;
    border-radius: 7px;
    color: var(--text-primary, #e4e4e7);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}
.mode-dropdown-item:hover {
    background: var(--bg-tertiary, #2a2d3e);
    color: var(--accent-primary, #6ee7b7);
}
.mode-dropdown-item.active {
    color: var(--accent-primary, #6ee7b7);
    font-weight: 700;
    background: rgba(110,231,183,.08);
}

/* light theme */
body.light-theme .mode-dropdown {
    background: #ffffff;
    border-color: #d0d5e0;
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
}
body.light-theme .mode-dropdown-divider {
    background: #e5e7eb;
}
body.light-theme .mode-dropdown-item {
    color: #374151;
}
body.light-theme .mode-dropdown-item:hover {
    background: #f3f5fc;
    color: #1ea85e;
}
body.light-theme .mode-dropdown-item.active {
    color: #1ea85e;
    font-weight: 700;
    background: rgba(30,168,94,.08);
}