/* ===================================
   THEME SYSTEM - CSS VARIABLES
   =================================== */

:root {
    /* Dark Theme (Default) */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-hover: #252525;
    --bg-quaternary: #0f0f0f;
    
    --border-primary: #1f1f1f;
    --border-secondary: #2a2a2a;
    --border-hover: #3a3a3a;
    --border-quaternary: #4a4a4a;
    
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;
    
    --accent-primary: #06b6d4;
    --accent-secondary: #0891b2;
    --accent-hover: #0284c7;
    
    --success-bg: #064e3b;
    --success-bg-hover: #065f46;
    --success-border: #10b981;
    --success-border-hover: #34d399;
    --success-text: #10b981;
    
    --warning-bg: #1a1a1a;
    --warning-bg-alt: rgba(245, 158, 11, 0.1);
    --warning-border: #f59e0b;
    --warning-border-alt: rgba(245, 158, 11, 0.3);
    --warning-text: #f59e0b;
    
    --error-bg: #1f1f1f;
    --error-bg-alt: #7c2d12;
    --error-border: #3a3a3a;
    --error-border-alt: #ea580c;
    --error-text: #6b7280;
    --error-text-alt: #fb923c;
    
    --special-red: #dc2626;
    --special-red-hover: #b91c1c;
    --special-red-light: #fca5a5;
    
    --special-green: #10b981;
    --special-green-hover: #059669;
    
    --special-amber: #f59e0b;
    --special-amber-hover: #d97706;
    
    --special-purple: #8b5cf6;
    --special-purple-hover: #7c3aed;
    --special-purple-dark: #6d28d9;
    --special-purple-light: #c4b5fd;
    
    --special-gold: #fbbf24;
    
    --modal-backdrop: rgba(0, 0, 0, 0.9);
    --modal-backdrop-heavy: rgba(0, 0, 0, 0.95);
}

/* Light Theme */
body.light-theme {
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-hover: #e5e7eb;
    --bg-quaternary: #fafafa;
    
    --border-primary: #e5e7eb;
    --border-secondary: #d1d5db;
    --border-hover: #9ca3af;
    --border-quaternary: #6b7280;
    
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #6b7280;
    
    --accent-primary: #0891b2;
    --accent-secondary: #06b6d4;
    --accent-hover: #0e7490;
    
    --success-bg: #d1fae5;
    --success-bg-hover: #a7f3d0;
    --success-border: #059669;
    --success-border-hover: #10b981;
    --success-text: #065f46;
    
    --warning-bg: #fef3c7;
    --warning-bg-alt: #fef3c7;
    --warning-border: #d97706;
    --warning-border-alt: rgba(217, 119, 6, 0.5);
    --warning-text: #92400e;
    
    --error-bg: #fee2e2;
    --error-bg-alt: #fecaca;
    --error-border: #dc2626;
    --error-border-alt: #ef4444;
    --error-text: #991b1b;
    --error-text-alt: #dc2626;
    
    --special-red: #dc2626;
    --special-red-hover: #b91c1c;
    --special-red-light: #ef4444;
    
    --special-green: #059669;
    --special-green-hover: #047857;
    
    --special-amber: #d97706;
    --special-amber-hover: #b45309;
    
    --special-purple: #7c3aed;
    --special-purple-hover: #6d28d9;
    --special-purple-dark: #5b21b6;
    --special-purple-light: #a78bfa;
    
    --special-gold: #d97706;
    
    --modal-backdrop: rgba(0, 0, 0, 0.6);
    --modal-backdrop-heavy: rgba(0, 0, 0, 0.75);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Selective transitions for better performance */
body,
.container,
header,
.icon-btn,
.letter-cell,
.modal-content,
.modal-header,
.modal-body,
.key,
.win-modal-content,
.setting-item,
.calendar-day,
.footer,
.keyboard,
.badge,
.win-btn,
.archive-action-btn,
.calendar-nav-btn,
.got-it-btn,
.toggle-slider,
.close-btn,
.win-stat {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, system-ui, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: max(env(safe-area-inset-top), 12px) env(safe-area-inset-right, 12px) max(env(safe-area-inset-bottom), 12px) env(safe-area-inset-left, 12px);
    margin: 0;
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    -webkit-user-select: none;
    user-select: none;
}

.container {
    width: 100%;
    max-width: 428px;
    padding: 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 24px);
    min-height: calc(100dvh - 24px);
    justify-content: space-between;
    position: relative;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 12px 20px;
    flex-shrink: 0;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-primary);
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0;
    color: var(--text-primary);
}

.header-buttons {
    display: flex;
    gap: 12px;
}

.icon-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    color: var(--text-primary);
    font-size: 1.1rem;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
}

.icon-btn:hover,
.icon-btn:active {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

@media (hover: none) {
    .icon-btn:hover {
        background: var(--bg-tertiary);
        transform: none;
    }
}

/* Game Board */
.game-board {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 16px 0;
    align-items: center;
    flex-grow: 1;
    justify-content: center;
    padding: 0 16px;
}

.word-row {
    display: flex;
    gap: 6px;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 396px;
}

.letter-cell {
    width: 44px;
    height: 44px;
    border: 2px solid var(--border-primary);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    transition: all 0.2s ease;
    cursor: pointer;
    touch-action: manipulation;
    background: var(--bg-secondary);
    -webkit-tap-highlight-color: transparent;
    position: relative;
}

.letter-cell:hover {
    border-color: var(--border-secondary);
}

.letter-cell.hidden {
    background: transparent !important;
    border: 2px solid var(--bg-quaternary) !important;
}

.letter-cell.filled {
    background: var(--bg-tertiary);
    border-color: var(--border-secondary);
    color: var(--accent-primary);
    font-weight: 700;
}

.letter-cell.hint {
    background: var(--bg-tertiary);
    border-color: var(--warning-border);
    color: var(--warning-text);
    position: relative;
}

.letter-cell.hint::after {
    content: '💡';
    position: absolute;
    top: -2px;
    right: -2px;
    font-size: 0.6rem;
    opacity: 0.8;
}

.letter-cell.correct {
    background: var(--success-bg);
    border-color: var(--success-border);
    color: var(--success-text);
    animation: correctPulse 0.4s ease-out;
}

.letter-cell.wrong {
    background: var(--error-bg);
    border-color: var(--error-border);
    color: var(--error-text);
    animation: wrongShake 0.5s ease-in-out;
}

.letter-cell.current {
    border-color: var(--accent-primary);
    background: rgba(6, 182, 212, 0.1);
    box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.2);
    animation: currentPulse 2s ease-in-out infinite;
}

body.light-theme .letter-cell.current {
    background: rgba(8, 145, 178, 0.1);
    box-shadow: 0 0 0 2px rgba(8, 145, 178, 0.2);
}

.letter-cell.empty {
    background: var(--bg-secondary);
    border-color: var(--border-primary);
}

.letter-cell.guess {
    background: var(--bg-tertiary);
    border-color: var(--border-secondary);
    color: var(--text-primary);
    animation: guessEntry 0.2s ease-out;
}


.footer {
    margin-top: auto;
    padding: 12px 16px 8px 16px;
    color: var(--text-tertiary);
    font-size: 0.8rem;
    font-weight: 500;
    flex-shrink: 0;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-primary);
    margin: 0 16px 8px 16px;
}

/* iOS-Style On-screen Keyboard */
.keyboard {
    margin-top: auto;
    padding: 16px 8px calc(env(safe-area-inset-bottom, 8px) + 8px) 8px;
    display: none;
    flex-shrink: 0;
    background: var(--bg-quaternary);
    border-radius: 16px 16px 0 0;
    border-top: 1px solid var(--border-primary);
}

.keyboard.mobile {
    display: block;
}

.keyboard-row {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-bottom: 6px;
}

.key {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    min-width: 36px;
    height: 48px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
    touch-action: manipulation;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.key:active,
.key.active {
    background: var(--bg-hover);
    transform: scale(0.95);
}

@media (hover: none) {
    .key:hover {
        background: var(--bg-tertiary);
    }
}

.key.wide {
    min-width: 64px;
    font-size: 0.9rem;
}

.key.backspace {
    min-width: 60px;
    font-size: 0.9rem;
    background: var(--special-red);
    border-color: var(--special-red);
    color: white;
}

.key.backspace:active,
.key.backspace.active {
    background: var(--special-red-hover);
    border-color: var(--special-red-hover);
}

.key.clear {
    min-width: 50px;
    font-size: 0.7rem;
    background: var(--special-amber);
    border-color: var(--special-amber);
    color: #000000;
    font-weight: 700;
}

body.light-theme .key.clear {
    color: #ffffff;
}

.key.clear:active,
.key.clear.active {
    background: var(--special-amber-hover);
    border-color: var(--special-amber-hover);
}

.keyboard-row-bottom {
    margin-top: 2px;
}

.keyboard-row-bottom .key {
    flex: 1;
    min-width: 0;
    max-width: none;
}

.key.enter {
    background: var(--special-green);
    border-color: var(--special-green);
    font-size: 0.9rem;
    color: #ffffff;
    font-weight: 700;
}

.key.enter:active,
.key.enter.active {
    background: var(--special-green-hover);
    border-color: var(--special-green-hover);
}

/* Animations */
@keyframes correctPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.08); }
    100% { transform: scale(1); }
}

@keyframes wrongShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

@keyframes currentPulse {
    0%, 100% { box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.2); }
    50% { box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.4); }
}

@keyframes guessEntry {
    0% { transform: scale(0.9); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes clearPulse {
    0% { 
        background: var(--special-amber);
        transform: scale(1);
    }
    50% { 
        background: var(--warning-bg-alt);
        transform: scale(0.95);
    }
    100% { 
        background: var(--bg-secondary);
        transform: scale(1);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUpScale {
    0% {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }

    
}

@keyframes celebrationBounce {
    0%, 100% { transform: scale(1) rotate(0deg); }
    25% { transform: scale(1.2) rotate(-5deg); }
    75% { transform: scale(1.2) rotate(5deg); }
}

@keyframes confettiFall {
    0% {
        transform: translateY(-100vh) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

/* Add these animations for the error notification */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    to {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-backdrop);
}

.modal-content {
    background-color: var(--bg-secondary);
    margin: 5% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    border: 1px solid var(--border-primary);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-primary);
}

.modal-header h2 {
    font-size: 1.5rem;
    margin: 0;
    color: var(--text-primary);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease;
}

.close-btn:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 25px;
}

.modal-body p {
    line-height: 1.6;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.modal-body h3 {
    margin: 25px 0 15px 0;
    color: var(--text-primary);
}

.modal-body ul {
    margin-left: 20px;
    color: var(--text-secondary);
}

.modal-body li {
    margin-bottom: 8px;
    line-height: 1.5;
}

.example-grid {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin: 15px 0;
    align-items: center;
}

.example-row {
    display: flex;
    gap: 4px;
}

.example-grid .letter {
    width: 35px;
    height: 35px;
    border: 2px solid var(--accent-primary);
    background-color: var(--success-bg);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: bold;
    color: var(--success-text);
}

.got-it-btn {
    background-color: var(--accent-primary);
    border: none;
    color: #000000;
    font-size: 1rem;
    font-weight: bold;
    padding: 15px 40px;
    border-radius: 8px;
    cursor: pointer;
    margin-top: 20px;
    width: 100%;
    transition: background-color 0.2s ease;
}

body.light-theme .got-it-btn {
    color: #ffffff;
}

.got-it-btn:hover {
    background-color: var(--accent-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-top: 5px;
}

.achievements-section {
    margin: 30px 0 20px 0;
    padding-top: 20px;
    border-top: 1px solid var(--border-primary);
}

.achievements-section h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    text-align: left;
}

.achievement-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    min-height: 50px;
}

.badge {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
    border: 1px solid rgba(99, 102, 241, 0.4);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.badge:hover {
    transform: translateY(-2px);
    border-color: rgba(99, 102, 241, 0.6);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.no-achievements {
    color: var(--text-tertiary);
    font-style: italic;
    font-size: 0.9rem;
    text-align: center;
    width: 100%;
}

.next-game {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

#countdown {
    font-weight: bold;
    color: var(--accent-primary);
}

/* Win Modal Styles */
.win-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-backdrop-heavy);
    backdrop-filter: blur(8px);
    animation: fadeIn 0.3s ease-out;
}

.win-modal-content {
    background: var(--bg-quaternary);
    margin: 15% auto;
    padding: 0;
    border-radius: 16px;
    width: 90%;
    max-width: 420px;
    border: 1px solid var(--border-primary);
    animation: slideUpScale 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: hidden;
}

.win-header {
    background: var(--bg-secondary);
    padding: 30px 20px;
    text-align: center;
    border-bottom: 1px solid var(--border-primary);
}

.win-header h2 {
    font-size: 2.2rem;
    margin: 0 0 10px 0;
    color: var(--text-primary);
}

.win-emoji {
    font-size: 3.5rem;
    margin-bottom: 10px;
    display: block;
    animation: celebrationBounce 0.6s ease-out;
}

.win-message {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin: 0;
}

.win-body {
    padding: 30px 25px;
}

.win-achievement {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--special-gold);
    margin-bottom: 25px;
    padding: 15px;
    background: var(--warning-bg-alt);
    border-radius: 8px;
    border: 1px solid var(--warning-border-alt);
    animation: achievementPulse 2s ease-in-out infinite;
}

@keyframes achievementPulse {
    0%, 100% { 
        transform: scale(1);
        border-color: var(--warning-border-alt);
    }
    50% { 
        transform: scale(1.02);
        border-color: var(--warning-border);
    }
}

.win-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 25px;
}

.win-stat {
    text-align: center;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-primary);
    transition: all 0.2s ease;
}

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

.win-stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-primary);
    margin-bottom: 5px;
}

.win-stat-label {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.win-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.win-btn {
    flex: 1;
    padding: 16px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.win-btn-share {
    background: linear-gradient(135deg, var(--special-green), var(--special-green-hover));
    color: #ffffff;
    position: relative;
    overflow: hidden;
    grid-column: 1 / -1;
}

.win-btn-share:hover,
.win-btn-share:active {
    background: linear-gradient(135deg, var(--special-green-hover), #047857);
    transform: translateY(-2px);
}

.win-btn-share.copied {
    background: var(--accent-primary);
    animation: shareSuccess 0.6s ease-out;
}

@keyframes shareSuccess {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.win-btn-primary {
    background: var(--accent-primary);
    color: #000000;
}

body.light-theme .win-btn-primary {
    color: #ffffff;
}

.win-btn-primary:hover,
.win-btn-primary:active {
    background: var(--accent-secondary);
    transform: translateY(-2px);
}

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

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

/* Settings Modal Styles */
.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 15px;
    border: 1px solid var(--border-secondary);
}

.setting-info h3 {
    font-size: 1.1rem;
    margin: 0 0 5px 0;
    color: var(--text-primary);
}

.setting-info p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.4;
}

.setting-note {
    padding: 15px;
    background: var(--warning-bg-alt);
    border: 1px solid var(--warning-border-alt);
    border-radius: 8px;
    margin-top: 10px;
}

.setting-note p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--warning-text);
    line-height: 1.5;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 56px;
    height: 32px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-secondary);
    transition: 0.3s;
    border-radius: 32px;
    border: 2px solid var(--border-hover);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-tertiary);
    transition: 0.3s;
    border-radius: 50%;
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
    background-color: #ffffff;
}

.toggle-slider:hover {
    border-color: var(--border-quaternary);
}

/* Hard Mode Indicator Badge */
.hard-mode-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    margin: 12px auto 0 auto;
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.2), rgba(185, 28, 28, 0.2));
    border: 1px solid rgba(220, 38, 38, 0.4);
    border-radius: 8px;
    color: var(--special-red-light);
    font-size: 0.9rem;
    font-weight: 600;
    max-width: fit-content;
    animation: hardModePulse 2s ease-in-out infinite;
}

.badge-icon {
    font-size: 1.1rem;
}

@keyframes hardModePulse {
    0%, 100% { 
        border-color: rgba(220, 38, 38, 0.4);
        box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.4);
    }
    50% { 
        border-color: rgba(220, 38, 38, 0.6);
        box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.2);
    }
}

/* Confetti Animation */
.confetti {
    position: fixed;
    width: 10px;
    height: 10px;
    background: var(--accent-primary);
    position: absolute;
    animation: confettiFall 3s linear forwards;
    z-index: 1999;
}

.confetti:nth-child(2n) { background: var(--special-green); }
.confetti:nth-child(3n) { background: var(--special-amber); }
.confetti:nth-child(4n) { background: var(--accent-primary); }
.confetti:nth-child(5n) { background: #ffffff; }

/* ===================================
   ARCHIVE MODAL STYLES
   =================================== */

.archive-stats-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 25px;
    padding: 20px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-secondary);
}

.archive-stat {
    text-align: center;
}

.archive-stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-primary);
    margin-bottom: 5px;
}

.archive-stat-label {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.archive-action-btn {
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--special-purple), var(--special-purple-hover));
    border: none;
    border-radius: 8px;
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.archive-action-btn:hover,
.archive-action-btn:active {
    background: linear-gradient(135deg, var(--special-purple-hover), var(--special-purple-dark));
    transform: translateY(-2px);
}

.archive-section-title {
    margin-bottom: 20px;
}

.archive-section-title h3 {
    font-size: 1.2rem;
    margin: 0 0 5px 0;
    color: var(--text-primary);
}

.archive-note {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

.calendar-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-secondary);
}

.calendar-month-year {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.calendar-nav-btn {
    background: var(--bg-hover);
    border: 1px solid var(--border-hover);
    color: var(--text-primary);
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calendar-nav-btn:hover,
.calendar-nav-btn:active {
    background: var(--border-secondary);
    border-color: var(--border-quaternary);
    transform: scale(1.05);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
    margin-bottom: 20px;
}

.calendar-day-header {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-tertiary);
    padding: 8px 4px;
    text-transform: uppercase;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-secondary);
    color: var(--text-tertiary);
    position: relative;
}

.calendar-day.available {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.calendar-day.available:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

.calendar-day.completed {
    background: var(--success-bg);
    border-color: var(--success-border);
    color: var(--success-text);
}

.calendar-day.completed::after {
    content: '✓';
    position: absolute;
    top: 2px;
    right: 2px;
    font-size: 0.65rem;
    opacity: 0.8;
}

.calendar-day.completed:hover {
    background: var(--success-bg-hover);
    border-color: var(--success-border-hover);
    transform: scale(1.05);
}

.calendar-day.today {
    border-color: var(--special-gold);
    box-shadow: 0 0 0 2px rgba(251, 191, 36, 0.3);
}

.calendar-day.today.available {
    background: rgba(251, 191, 36, 0.1);
    color: var(--special-gold);
    font-weight: 700;
}

body.light-theme .calendar-day.today.available {
    background: rgba(217, 119, 6, 0.1);
}

.calendar-day.future {
    background: var(--bg-quaternary);
    border-color: var(--bg-tertiary);
    color: var(--border-hover);
    cursor: not-allowed;
}

.calendar-day.other-month {
    opacity: 0.3;
    cursor: default;
}

.archive-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    padding: 15px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-secondary);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.legend-indicator {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 2px solid;
}

.legend-indicator.today {
    background: rgba(251, 191, 36, 0.1);
    border-color: var(--special-gold);
}

body.light-theme .legend-indicator.today {
    background: rgba(217, 119, 6, 0.1);
}

.legend-indicator.completed {
    background: var(--success-bg);
    border-color: var(--success-border);
}

.legend-indicator.available {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
}

.legend-indicator.future {
    background: var(--bg-quaternary);
    border-color: var(--bg-tertiary);
}

/* Archive Mode Indicator Badge */
.archive-mode-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    margin: 12px auto 0 auto;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(124, 58, 237, 0.2));
    border: 1px solid rgba(139, 92, 246, 0.4);
    border-radius: 8px;
    color: var(--special-purple-light);
    font-size: 0.9rem;
    font-weight: 600;
    max-width: fit-content;
    animation: archiveModePulse 2s ease-in-out infinite;
}

@keyframes archiveModePulse {
    0%, 100% { 
        border-color: rgba(139, 92, 246, 0.4);
        box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.4);
    }
    50% { 
        border-color: rgba(139, 92, 246, 0.6);
        box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.2);
    }
}

/* ===================================
   COLOR-BLIND ACCESSIBILITY MODE
   =================================== */

body.colorblind-mode .letter-cell.filled {
    background: #1e40af;
    border-color: #3b82f6;
    color: #60a5fa;
}

body.colorblind-mode .letter-cell.hint {
    background: #92400e;
    border-color: #f97316;
    color: #fb923c;
}

body.colorblind-mode .letter-cell.correct {
    background: #1e40af;
    border-color: #3b82f6;
    color: #60a5fa;
    position: relative;
}

body.colorblind-mode .letter-cell.correct::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 4px,
        rgba(96, 165, 250, 0.3) 4px,
        rgba(96, 165, 250, 0.3) 8px
    );
    pointer-events: none;
    border-radius: 6px;
}

body.colorblind-mode .letter-cell.hint::after {
    content: '⚠️';
    position: absolute;
    top: -2px;
    right: -2px;
    font-size: 0.6rem;
    opacity: 0.9;
}

body.colorblind-mode .letter-cell.wrong {
    background: #7c2d12;
    border-color: #ea580c;
    color: #fb923c;
    position: relative;
}

body.colorblind-mode .letter-cell.wrong::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle, rgba(251, 146, 60, 0.4) 1px, transparent 1px);
    background-size: 6px 6px;
    pointer-events: none;
    border-radius: 6px;
}

body.colorblind-mode .letter-cell.current {
    border-color: #fbbf24;
    background: rgba(251, 191, 36, 0.15);
    box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.3);
}

body.colorblind-mode .key.enter {
    background: #2563eb;
    border-color: #2563eb;
}

body.colorblind-mode .key.enter:active,
body.colorblind-mode .key.enter.active {
    background: #1d4ed8;
    border-color: #1d4ed8;
}

body.colorblind-mode .key.clear {
    background: #f97316;
    border-color: #f97316;
}

body.colorblind-mode .key.clear:active,
body.colorblind-mode .key.clear.active {
    background: #ea580c;
    border-color: #ea580c;
}

body.colorblind-mode .key.backspace {
    background: #ea580c;
    border-color: #ea580c;
}

body.colorblind-mode .key.backspace:active,
body.colorblind-mode .key.backspace.active {
    background: #c2410c;
    border-color: #c2410c;
}

body.colorblind-mode .win-stat-number {
    color: #3b82f6;
}

body.colorblind-mode .win-btn-share {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

body.colorblind-mode .win-btn-primary {
    background: #3b82f6;
}

body.colorblind-mode .win-btn-primary:hover,
body.colorblind-mode .win-btn-primary:active {
    background: #2563eb;
}

body.colorblind-mode .toggle-switch input:checked + .toggle-slider {
    background-color: #2563eb;
    border-color: #2563eb;
}

body.colorblind-mode .example-grid .letter {
    border: 2px solid #3b82f6;
    background-color: #1e40af;
    color: #60a5fa;
}

body.colorblind-mode .icon-btn i {
    stroke: #60a5fa;
}

/* ===================================
   LUCIDE ICON SYSTEM
   =================================== */

.icon-btn i {
    width: 20px;
    height: 20px;
    stroke-width: 2px;
    display: block;
}

.close-btn i {
    width: 24px;
    height: 24px;
    stroke-width: 2px;
    display: block;
}

.key.backspace i {
    width: 18px;
    height: 18px;
    stroke-width: 2.5px;
}

.icon-btn i,
.close-btn i {
    transition: transform 0.2s ease;
}

.icon-btn:hover i,
.close-btn:hover i {
    transform: scale(1.1);
}

.icon-btn:active i,
.close-btn:active i {
    transform: scale(0.95);
}

/* ===================================
   DAILY HINT SYSTEM
   =================================== */

/* Hint Button */
.hint-btn {
    position: relative;
}

.hint-btn.available {
    animation: hintPulse 2.5s ease-in-out infinite;
}

.hint-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.hint-btn.disabled .hint-badge {
    background: var(--border-secondary);
    color: var(--text-tertiary);
}

@keyframes hintPulse {
    0%, 100% { 
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(251, 191, 36, 0);
    }
    50% { 
        transform: scale(1.08);
        box-shadow: 0 0 12px 4px rgba(251, 191, 36, 0.4);
    }
}

.hint-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    background: var(--special-gold);
    color: #000000;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 3px 6px;
    border-radius: 12px;
    min-width: 22px;
    text-align: center;
    border: 2px solid var(--bg-primary);
    line-height: 1;
}

body.light-theme .hint-badge {
    color: #ffffff;
}

/* Hint Modal Specific Styles */
.hint-modal-content {
    max-width: 450px;
}

.hint-status {
    text-align: center;
    padding: 20px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid var(--border-secondary);
}

.hint-status p {
    margin: 8px 0;
    font-size: 1rem;
    color: var(--text-secondary);
}

.hint-count-display {
    color: var(--special-gold);
    font-weight: 700;
    font-size: 1.1rem;
}

.hint-next-reset {
    font-size: 0.9rem !important;
    color: var(--text-tertiary) !important;
    margin-top: 8px !important;
}

#hint-countdown {
    color: var(--accent-primary);
    font-weight: 600;
}

.hint-explanation {
    text-align: center;
    padding: 24px;
    background: var(--warning-bg-alt);
    border: 2px solid var(--warning-border-alt);
    border-radius: 12px;
    margin-bottom: 20px;
}

/* Lucide Icon Styling for Hint Icon */
.hint-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 16px;
}

.hint-icon i {
    width: 64px;
    height: 64px;
    stroke-width: 1.5px;
    color: var(--special-gold);
    animation: hintIconFloat 3s ease-in-out infinite;
}

@keyframes hintIconFloat {
    0%, 100% { 
        transform: translateY(0) scale(1);
    }
    50% { 
        transform: translateY(-8px) scale(1.05);
    }
}

.hint-explanation h3 {
    font-size: 1.3rem;
    margin: 12px 0 8px 0;
    color: var(--text-primary);
}

.hint-explanation p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.hint-warning {
    padding: 12px;
    background: var(--error-bg-alt);
    border: 1px solid var(--error-border-alt);
    border-radius: 8px;
    margin-bottom: 20px;
}

.hint-warning p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--error-text-alt);
    text-align: center;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hint-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.hint-cancel-btn,
.hint-confirm-btn {
    padding: 14px 20px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.hint-cancel-btn:hover,
.hint-cancel-btn:active {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.hint-confirm-btn {
    background: linear-gradient(135deg, var(--special-gold), #f59e0b);
    color: #000000;
    position: relative;
    overflow: hidden;
}

body.light-theme .hint-confirm-btn {
    color: #ffffff;
}

.hint-confirm-btn:hover,
.hint-confirm-btn:active {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(251, 191, 36, 0.4);
}

.hint-confirm-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    animation: hintShimmer 3s infinite;
}

@keyframes hintShimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* Hint Result Modal */
.hint-result-modal .modal-content {
    max-width: 420px;
}

.hint-result-content {
    text-align: center;
    padding: 20px;
}

/* Lucide Icon for Result */
.hint-result-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

.hint-result-icon i {
    width: 80px;
    height: 80px;
    stroke-width: 1.5px;
    color: var(--special-gold);
    animation: hintResultPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes hintResultPop {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.hint-result-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--special-gold);
    margin: 16px 0;
    padding: 20px;
    background: var(--warning-bg-alt);
    border: 2px solid var(--warning-border);
    border-radius: 12px;
    animation: hintTextFade 0.4s ease-out 0.2s both;
}

@keyframes hintTextFade {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hint-used-status {
    margin-top: 20px;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-secondary);
}

.hint-used-status p {
    margin: 6px 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.hint-used-status strong {
    color: var(--text-primary);
    font-weight: 700;
}

.hint-next {
    font-size: 0.85rem !important;
    color: var(--text-tertiary) !important;
}

#hint-result-countdown {
    color: var(--accent-primary);
    font-weight: 600;
}

/* Daily Hint Letter Cell Styling - Keep the star emoji for the cell indicator */
.letter-cell.daily-hint {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.2), rgba(245, 158, 11, 0.2));
    border-color: var(--special-gold);
    color: var(--special-gold);
    font-weight: 800;
    position: relative;
    animation: dailyHintReveal 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.letter-cell.daily-hint::after {
    content: '⭐';
    position: absolute;
    top: -4px;
    right: -4px;
    font-size: 0.75rem;
    animation: starTwinkle 2s ease-in-out infinite;
}

@keyframes dailyHintReveal {
    0% {
        transform: scale(0.3) rotate(-180deg);
        opacity: 0;
    }
    60% {
        transform: scale(1.15) rotate(10deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

@keyframes starTwinkle {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.3);
        opacity: 0.7;
    }
}

/* Modal Header Icon Styling */
.modal-header h2 i {
    stroke-width: 2px;
    color: var(--accent-primary);
}

/* Mobile Responsiveness for Hints */
@media (max-width: 480px) {
    .hint-modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .hint-explanation {
        padding: 16px;
    }
    
    .hint-icon i {
        width: 48px;
        height: 48px;
    }
    
    .hint-explanation h3 {
        font-size: 1.1rem;
    }
    
    .hint-explanation p {
        font-size: 0.9rem;
    }
    
    .hint-actions {
        grid-template-columns: 1fr;
    }
    
    .hint-result-icon i {
        width: 60px;
        height: 60px;
    }
    
    .hint-result-text {
        font-size: 1.1rem;
        padding: 16px;
    }
    
    .hint-badge {
        top: -4px;
        right: -4px;
        font-size: 0.6rem;
        padding: 2px 5px;
    }
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

/* Mobile Responsiveness */
@media (max-width: 480px) {
    .win-modal-content {
        margin: 20% auto;
        width: 92%;
    }
    
    .win-header h2 {
        font-size: 1.8rem;
    }
    
    .win-emoji {
        font-size: 3rem;
    }
    
    .win-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }
    
    .win-stat {
        padding: 15px 10px;
    }
    
    .win-stat-number {
        font-size: 1.5rem;
    }
    
    .win-stat-label {
        font-size: 0.75rem;
    }
    
    .win-actions {
        grid-template-columns: 1fr;
    }
    
    .win-btn-share {
        grid-column: 1;
    }
    
    .setting-item {
        padding: 15px;
    }
    
    .setting-info h3 {
        font-size: 1rem;
    }
    
    .setting-info p {
        font-size: 0.85rem;
    }
    
    .hard-mode-badge {
        font-size: 0.85rem;
        padding: 8px 16px;
    }
    
    .archive-stats-summary {
        padding: 15px;
        gap: 8px;
    }
    
    .archive-stat-number {
        font-size: 1.5rem;
    }
    
    .archive-stat-label {
        font-size: 0.75rem;
    }
    
    .archive-action-btn {
        font-size: 1rem;
        padding: 14px 20px;
    }
    
    .calendar-day {
        font-size: 0.85rem;
    }
    
    .archive-legend {
        gap: 10px;
    }
    
    .legend-item {
        font-size: 0.8rem;
    }
}

/* Tablet Adjustments */
@media (min-width: 481px) {
    .container {
        max-width: 520px;
        padding: 20px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .letter-cell {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }
    
    .game-board {
        gap: 8px;
        margin: 25px 0;
    }
    
    .word-row {
        gap: 3px;
    }
  
    
    .keyboard {
        display: none !important;
    }
}

/* Desktop Adjustments */
@media (min-width: 769px) {
    body {
        align-items: center;
    }
    
    .container {
        max-width: 650px;
        padding: 30px;
        min-height: auto;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    .letter-cell {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
    }
    
    .word-row {
        gap: 4px;
    }
    
    .header-buttons {
        gap: 10px;
    }
    
    .icon-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .game-board {
        margin: 30px 0;
    }
    
    
    .footer {
        font-size: 0.9rem;
        margin-top: 40px;
    }
}

/* Don't Show Again Checkbox */
.dont-show-container {
    margin: 20px 0 10px 0;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-secondary);
}

.dont-show-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
    user-select: none;
}

.dont-show-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-primary);
}

.dont-show-label:hover {
    color: var(--text-primary);
}