/**
 * Feliz Natal em Família - Styles
 * Desenvolvido por B20 Conteúdo Digital
 * https://www.b20.com.br
 */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
    /* Christmas Color Palette */
    --primary-color: #DC143C;
    --primary-dark: #B22222;
    --primary-light: #FF4444;
    --secondary-color: #228B22;
    --secondary-dark: #006400;
    --secondary-light: #32CD32;
    --accent-gold: #FFD700;
    --accent-silver: #C0C0C0;
    
    /* Light Theme */
    --bg-color: #FFF8F0;
    --bg-secondary: #FFFFFF;
    --bg-card: #FFFFFF;
    --text-color: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #666666;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-strong: rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;
    
    /* Typography */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-christmas: 'Mountains of Christmas', cursive;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-Index Scale */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 500;
    --z-modal: 1000;
    --z-toast: 2000;
    
    /* Safe Areas */
    --safe-area-top: env(safe-area-inset-top, 0px);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
    
    /* Component Sizes */
    --header-height: 60px;
    --bottom-nav-height: 70px;
    --touch-target: 48px;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-color: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #1f2937;
    --text-color: #f5f5f5;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --border-color: #374151;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --shadow-strong: rgba(0, 0, 0, 0.4);
    --primary-light: #FF6666;
}

/* ========================================
   CSS Reset & Base Styles
   ======================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
    padding-top: calc(var(--header-height) + var(--safe-area-top));
    padding-bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom) + var(--spacing-xl));
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Focus Styles */
:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background-color: var(--primary-color);
    color: white;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ========================================
   Snow Animation
   ======================================== */
.snow-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: var(--z-base);
    overflow: hidden;
}

.snowflake {
    position: absolute;
    top: -10px;
    color: white;
    font-size: 1rem;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.8);
    animation: snowfall linear infinite;
    opacity: 0.8;
    user-select: none;
}

@keyframes snowfall {
    0% {
        transform: translateY(-10px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0.3;
    }
}

/* ========================================
   App Header
   ======================================== */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: white;
    padding: var(--spacing-md);
    padding-top: calc(var(--spacing-md) + var(--safe-area-top));
    display: flex;
    align-items: center;
    z-index: var(--z-sticky);
    box-shadow: 0 4px 20px var(--shadow-strong);
}

.header-content {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: #DC143C;
    font-family: var(--font-christmas);
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-shadow: none;
}

.app-logo {
    height: 96px;
    width: auto;
    object-fit: contain;
}

.christmas-icon {
    font-size: var(--font-size-2xl);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.theme-toggle {
    width: var(--touch-target);
    height: var(--touch-target);
    border: none;
    border-radius: var(--radius-full);
    background: rgba(220, 20, 60, 0.1);
    color: #DC143C;
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: rgba(220, 20, 60, 0.2);
    transform: rotate(15deg);
}

.theme-toggle:active {
    transform: scale(0.95);
}

/* ========================================
   Main Content & Container
   ======================================== */
main {
    position: relative;
    z-index: var(--z-base);
}

.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Page Sections */
.page-section {
    display: none;
    animation: fadeIn var(--transition-base);
}

.page-section.active {
    display: block;
}

.page-section[hidden] {
    display: none;
}

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

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    font-family: var(--font-christmas);
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.section-description {
    color: var(--text-muted);
    font-size: var(--font-size-base);
}

/* ========================================
   Hero Card (Home)
   ======================================== */
.hero-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    color: white;
    margin-bottom: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(220, 20, 60, 0.3);
}

.hero-decoration {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-3xl);
}

.decoration-item {
    animation: float 3s ease-in-out infinite;
}

.decoration-item:nth-child(2) {
    animation-delay: 0.5s;
}

.decoration-item:nth-child(3) {
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(5deg); }
}

.hero-title {
    font-family: var(--font-christmas);
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: var(--font-size-base);
    opacity: 0.95;
    max-width: 500px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.7;
}

/* Christmas Lights */
.christmas-lights {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.light {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    animation: blink 1s ease-in-out infinite;
}

.light.red { background: #ff0000; box-shadow: 0 0 10px #ff0000; }
.light.green { background: #00ff00; box-shadow: 0 0 10px #00ff00; animation-delay: 0.2s; }
.light.yellow { background: #ffff00; box-shadow: 0 0 10px #ffff00; animation-delay: 0.4s; }
.light.blue { background: #00bfff; box-shadow: 0 0 10px #00bfff; animation-delay: 0.6s; }

@keyframes blink {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

/* ========================================
   Info Card
   ======================================== */
.info-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px var(--shadow-strong);
}

.card-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.info-card h3 {
    font-family: var(--font-christmas);
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.info-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   Countdown Card
   ======================================== */
.countdown-card {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    color: white;
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 10px 40px rgba(34, 139, 34, 0.3);
}

.countdown-title {
    font-family: var(--font-christmas);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.countdown-display {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    min-width: 70px;
}

.countdown-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    font-family: var(--font-christmas);
    line-height: 1;
}

.countdown-label {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.9;
    margin-top: var(--spacing-xs);
}

.countdown-separator {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    opacity: 0.7;
}

.countdown-message {
    font-size: var(--font-size-base);
    opacity: 0.95;
}

/* Christmas Day State */
.countdown-card.christmas-day {
    background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA500 100%);
    animation: celebrate 1s ease-in-out infinite;
}

@keyframes celebrate {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* ========================================
   Quick Actions
   ======================================== */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-color);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
    min-height: var(--touch-target);
}

.action-btn i {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
}

.action-btn:hover {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(220, 20, 60, 0.3);
}

.action-btn:hover i {
    color: white;
}

.action-btn:active {
    transform: translateY(-2px);
}

/* ========================================
   Message Generator
   ======================================== */
.message-generator-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    text-align: center;
}

.generated-message {
    background: linear-gradient(135deg, rgba(220, 20, 60, 0.1) 0%, rgba(34, 139, 34, 0.1) 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border-color);
}

.message-text {
    font-size: var(--font-size-lg);
    color: var(--text-color);
    line-height: 1.8;
    font-style: italic;
}

/* Mobile adjustments for message generator */
@media (max-width: 480px) {
    .message-generator-card {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }

    .generated-message {
        padding: var(--spacing-lg);
        min-height: 100px;
    }

    .message-text {
        font-size: var(--font-size-base);
        line-height: 1.6;
    }

    .btn {
        min-height: 44px;
        padding: var(--spacing-md) var(--spacing-lg);
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    min-height: var(--touch-target);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(220, 20, 60, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 20, 60, 0.4);
}

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

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

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-generate {
    margin-bottom: var(--spacing-md);
}

/* ========================================
   Messages List
   ======================================== */
.messages-list {
    display: grid;
    gap: var(--spacing-md);
}

.message-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 4px 15px var(--shadow-color);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.message-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

.message-card:hover {
    transform: translateX(4px);
    box-shadow: 0 6px 20px var(--shadow-strong);
}

.message-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-style: italic;
    margin: 0;
}

.message-card .message-emoji {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    display: block;
}

/* Mobile responsive messages */
@media (max-width: 480px) {
    .messages-list {
        gap: var(--spacing-sm);
    }

    .message-card {
        padding: var(--spacing-md);
        border-left-width: 3px;
    }

    .message-card .message-emoji {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-xs);
    }

    .message-card p {
        font-size: var(--font-size-sm);
        line-height: 1.6;
    }
}

/* ========================================
   Games Grid
   ======================================== */
.games-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.game-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-gold));
}

.game-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px var(--shadow-strong);
}

.game-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.game-icon {
    font-size: var(--font-size-3xl);
    flex-shrink: 0;
}

.game-info {
    flex: 1;
}

.game-title {
    font-family: var(--font-christmas);
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.game-participants {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(34, 139, 34, 0.1);
    color: var(--secondary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.game-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Mobile responsive games */
@media (max-width: 480px) {
    .games-grid {
        gap: var(--spacing-md);
    }

    .game-card {
        padding: var(--spacing-md);
    }

    .game-header {
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }

    .game-icon {
        font-size: var(--font-size-2xl);
    }

    .game-title {
        font-size: var(--font-size-lg);
    }

    .game-description {
        font-size: var(--font-size-sm);
        line-height: 1.6;
    }
}

/* ========================================
   Curiosities List
   ======================================== */
.curiosities-list {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.curiosity-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    display: flex;
    gap: var(--spacing-md);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.curiosity-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-gold));
}

.curiosity-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px var(--shadow-strong);
}

.curiosity-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(220, 20, 60, 0.3);
}

.curiosity-content h4 {
    font-family: var(--font-christmas);
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.curiosity-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* Mobile responsive curiosities */
@media (max-width: 480px) {
    .curiosities-list {
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-xl);
    }

    .curiosity-card {
        padding: var(--spacing-md);
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }

    .curiosity-number {
        width: 35px;
        height: 35px;
        font-size: var(--font-size-base);
        align-self: center;
    }

    .curiosity-content h4 {
        font-size: var(--font-size-base);
    }

    .curiosity-content p {
        font-size: var(--font-size-sm);
        line-height: 1.6;
    }
}

/* ========================================
   FAQ Section
   ======================================== */
.faq-section {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
}

.faq-title {
    font-family: var(--font-christmas);
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.faq-container {
    display: grid;
    gap: var(--spacing-md);
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-base);
}

.faq-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.faq-question {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: none;
    text-align: left;
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    transition: var(--transition-base);
    min-height: var(--touch-target);
}

.faq-question:hover {
    background: rgba(220, 20, 60, 0.05);
}

.faq-question:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.faq-icon {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 var(--spacing-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base), padding var(--transition-base);
}

.faq-item.active .faq-answer {
    padding: var(--spacing-md);
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* Mobile responsive FAQ */
@media (max-width: 480px) {
    .faq-section {
        padding: var(--spacing-lg);
    }

    .faq-title {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-md);
    }

    .faq-container {
        gap: var(--spacing-sm);
    }

    .faq-question {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
        min-height: 44px;
        gap: var(--spacing-sm);
    }

    .faq-icon {
        font-size: var(--font-size-lg);
    }

    .faq-item.active .faq-answer {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .faq-answer p {
        font-size: var(--font-size-sm);
        line-height: 1.6;
    }
}

/* ========================================
   Footer
   ======================================== */
.app-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    margin-bottom: calc(var(--bottom-nav-height) + var(--spacing-md));
}

.footer-content {
    max-width: 960px;
    margin: 0 auto;
}

.footer-brand {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.b20-link {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
}

.b20-link:hover {
    text-decoration: underline;
    transform: scale(1.05);
}

.footer-link a {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    text-decoration: none;
}

.footer-link a:hover {
    color: var(--primary-color);
}

/* ========================================
   Bottom Navigation
   ======================================== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--bg-card);
    display: flex;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -4px 20px var(--shadow-color);
    padding-bottom: var(--safe-area-bottom);
    z-index: var(--z-fixed);
    border-top: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    min-width: 64px;
    min-height: var(--touch-target);
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-base);
    border-radius: var(--radius-md);
    position: relative;
    flex: 1;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: rgba(220, 20, 60, 0.2);
}

.nav-item i {
    font-size: 20px;
    margin-bottom: var(--spacing-xs);
    transition: var(--transition-base);
}

.nav-item span {
    font-size: var(--font-size-xs);
    font-weight: 500;
    text-align: center;
}

.nav-item:hover {
    color: var(--primary-color);
    background: rgba(220, 20, 60, 0.05);
    transform: translateY(-2px);
}

.nav-item.active {
    color: var(--primary-color);
    background: rgba(220, 20, 60, 0.1);
}

.nav-item.active::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.nav-item.active i {
    transform: scale(1.15);
}

/* Mobile navigation improvements */
@media (max-width: 480px) {
    .bottom-nav {
        height: var(--bottom-nav-height);
        padding-bottom: calc(var(--safe-area-bottom) + var(--spacing-sm));
        z-index: var(--z-fixed);
    }

    .nav-item {
        padding: var(--spacing-md) var(--spacing-sm);
        min-height: 60px;
        min-width: 70px;
        flex: 1;
        margin: 0 var(--spacing-xs);
        border-radius: var(--radius-lg);
    }

    .nav-item i {
        font-size: 20px;
        margin-bottom: var(--spacing-xs);
    }

    .nav-item span {
        font-size: 11px;
        line-height: 1.2;
        font-weight: 600;
    }

    /* Ensure nav items are properly spaced and not overlapping */
    .bottom-nav {
        gap: var(--spacing-xs);
    }
}

/* ========================================
   Toast Notification
   ======================================== */
.toast {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + var(--spacing-lg));
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text-color);
    color: var(--bg-color);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    opacity: 0;
    transition: var(--transition-base);
    z-index: var(--z-toast);
    box-shadow: 0 4px 20px var(--shadow-strong);
    max-width: calc(100% - var(--spacing-xl));
    text-align: center;
}

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

.toast.success {
    background: var(--secondary-color);
    color: white;
}

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

/* ========================================
   Skeleton Loading
   ======================================== */
.skeleton {
    background: linear-gradient(90deg, 
        var(--border-color) 25%, 
        var(--bg-secondary) 50%, 
        var(--border-color) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 1em;
    margin-bottom: var(--spacing-sm);
}

.skeleton-title {
    height: 1.5em;
    width: 60%;
    margin-bottom: var(--spacing-md);
}

/* ========================================
   Empty State
   ======================================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.empty-state p {
    margin-bottom: var(--spacing-lg);
}

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

/* Extra small devices (phones < 360px) */
@media (max-width: 359px) {
    :root {
        --font-size-base: 0.875rem;
        --header-height: 56px;
        --bottom-nav-height: 65px;
    }

    body {
        padding-top: calc(var(--header-height) + var(--safe-area-top));
        padding-bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom) + var(--spacing-lg));
    }

    .app-header {
        height: var(--header-height);
        padding: var(--spacing-sm);
        padding-top: calc(var(--spacing-sm) + var(--safe-area-top));
    }

    .app-title {
        font-size: var(--font-size-lg);
        gap: var(--spacing-xs);
    }

    .app-logo {
        height: 84px;
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .hero-decoration {
        font-size: var(--font-size-2xl);
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }

    .countdown-item {
        min-width: 50px;
        padding: var(--spacing-xs);
    }

    .countdown-number {
        font-size: var(--font-size-lg);
    }

    .countdown-label {
        font-size: var(--font-size-xs);
    }

    .quick-actions {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .action-btn {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .action-btn i {
        font-size: var(--font-size-lg);
    }

    .container {
        padding: var(--spacing-sm);
    }
}

/* Small phones (360px - 480px) */
@media (min-width: 360px) and (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .countdown-item {
        min-width: 60px;
        padding: var(--spacing-sm);
    }

    .countdown-number {
        font-size: var(--font-size-xl);
    }

    .quick-actions {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .action-btn {
        padding: var(--spacing-lg);
        font-size: var(--font-size-sm);
    }

    .action-btn i {
        font-size: var(--font-size-xl);
    }

    .container {
        padding: var(--spacing-md);
    }
}

/* Medium phones (481px - 767px) */
@media (min-width: 481px) and (max-width: 767px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .countdown-item {
        min-width: 70px;
        padding: var(--spacing-md);
    }

    .countdown-number {
        font-size: var(--font-size-2xl);
    }

    .quick-actions {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .action-btn {
        padding: var(--spacing-xl);
        font-size: var(--font-size-base);
    }

    .container {
        padding: var(--spacing-lg);
    }

    /* Enable 2-column layout for lists on larger phones */
    .messages-list,
    .curiosities-list {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

/* Tablets */
@media (min-width: 768px) {
    .container {
        padding: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .countdown-item {
        min-width: 90px;
        padding: var(--spacing-lg);
    }
    
    .countdown-number {
        font-size: var(--font-size-4xl);
    }
    
    .quick-actions {
        gap: var(--spacing-lg);
    }
    
    .action-btn {
        padding: var(--spacing-xl);
    }
    
    .games-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .curiosities-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .messages-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .container {
        max-width: 960px;
    }
    
    .hero-card {
        padding: var(--spacing-2xl);
    }
    
    .countdown-display {
        gap: var(--spacing-lg);
    }
    
    .countdown-item {
        min-width: 100px;
    }
    
    .game-card {
        display: flex;
        flex-direction: column;
    }
    
    .faq-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large Desktop */
@media (min-width: 1440px) {
    .container {
        max-width: 1200px;
    }
    
    .games-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    /* Optimize animations for mobile */
    .hero-decoration span {
        animation-duration: 4s;
    }

    .christmas-lights span {
        animation-duration: 2s;
    }

    /* Improve touch targets */
    .action-btn,
    .btn,
    .nav-item,
    .faq-question {
        min-height: 44px;
        min-width: 44px;
    }

    /* Reduce shadow complexity on mobile for better performance */
    .game-card,
    .message-card,
    .curiosity-card,
    .info-card,
    .countdown-card {
        box-shadow: 0 2px 8px var(--shadow-color);
    }

    .game-card:hover,
    .message-card:hover,
    .curiosity-card:hover,
    .info-card:hover {
        transform: none;
        box-shadow: 0 4px 12px var(--shadow-strong);
    }

    /* Optimize snow animation for mobile */
    .snow-container {
        opacity: 0.6;
    }

    .snowflake {
        animation-duration: 8s;
        font-size: 0.75rem;
    }

    /* Better spacing for mobile */
    .section-header {
        margin-bottom: var(--spacing-lg);
    }

    .section-description {
        margin-bottom: var(--spacing-md);
    }
}

/* Small mobile devices (320px - 360px) */
@media (max-width: 360px) {
    :root {
        --spacing-xs: 2px;
        --spacing-sm: 6px;
        --spacing-md: 12px;
        --spacing-lg: 18px;
        --spacing-xl: 24px;
        --spacing-2xl: 36px;
    }

    .hero-card {
        padding: var(--spacing-lg);
    }

    .countdown-card {
        padding: var(--spacing-lg);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .countdown-display {
        gap: var(--spacing-xs);
        flex-wrap: wrap;
        justify-content: center;
    }

    .countdown-item {
        min-width: 45px;
        padding: var(--spacing-xs);
    }

    .countdown-number {
        font-size: var(--font-size-lg);
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Remove hover effects on touch devices */
    .action-btn:hover,
    .nav-item:hover,
    .faq-question:hover,
    .b20-link:hover {
        transform: none;
        background: transparent;
        color: inherit;
    }

    .info-card:hover,
    .game-card:hover,
    .message-card:hover,
    .curiosity-card:hover {
        transform: none;
        box-shadow: 0 4px 12px var(--shadow-color);
    }

    /* Ensure active states are visible on touch */
    .nav-item:active,
    .action-btn:active,
    .faq-question:active {
        transform: scale(0.95);
        background: rgba(220, 20, 60, 0.15);
        transition: all 0.1s ease;
    }

    /* Improve touch targets for navigation */
    .nav-item {
        min-height: 48px;
        min-width: 48px;
        padding: var(--spacing-md);
    }

    .bottom-nav {
        padding: var(--spacing-sm);
        padding-bottom: calc(var(--safe-area-bottom) + var(--spacing-md));
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .snowflake {
        display: none;
    }

    .christmas-icon {
        animation: none;
    }

    .hero-decoration span {
        animation: none;
    }

    .christmas-lights span {
        animation: none;
    }
}

/* Print Styles */
@media print {
    .app-header,
    .bottom-nav,
    .snow-container,
    .theme-toggle,
    .quick-actions,
    .btn {
        display: none !important;
    }
    
    body {
        padding: 0;
        background: white;
        color: black;
    }
    
    .page-section {
        display: block !important;
        page-break-inside: avoid;
    }
}