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

:root {
    /* Color Palette */
    --primary-color: #4CAF50;
    --secondary-color: #2196F3;
    --accent-color: #FF5722;
    --dark-bg: #1a1a2e;
    --darker-bg: #16213e;
    --light-bg: #f4f4f9;
    --text-dark: #333;
    --text-light: #fff;
    --text-gray: #666;
    --border-color: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.2);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--light-bg);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h2 {
    font-size: 2.5rem;
    color: var(--dark-bg);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.5rem;
    color: var(--dark-bg);
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==========================================
   Header & Navigation
   ========================================== */
header {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: var(--spacing-sm) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    color: var(--text-light);
    font-size: 1.5rem;
    margin: 0;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--text-light);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-links a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-light);
    padding: var(--spacing-xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,149.3C960,160,1056,160,1152,138.7C1248,117,1344,75,1392,53.3L1440,32L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 3.5rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    animation: fadeInDown 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--text-light);
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    animation: fadeInUp 1s ease 0.6s backwards;
}

.cta-button:hover {
    background-color: #f4511e;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.game-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    animation: fadeInUp 1s ease 0.8s backwards;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-light);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ==========================================
   Game Section
   ========================================== */
.game-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--light-bg);
}

.section-description {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: var(--spacing-lg);
}

.play-cta-container {
    max-width: 800px;
    margin: 0 auto;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px var(--shadow);
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    border: 2px solid var(--border-color);
}

.play-cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.game-preview-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.play-cta-content h3 {
    font-size: 2rem;
    color: var(--dark-bg);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.play-cta-content p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.play-cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-light);
    padding: 1.2rem 3rem;
    font-size: 1.3rem;
    font-weight: 700;
    border-radius: var(--radius-xl);
    box-shadow: 0 6px 25px rgba(76, 175, 80, 0.4);
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    cursor: pointer;
    margin: var(--spacing-md) 0;
}

.play-cta-button:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 35px rgba(76, 175, 80, 0.5);
}

.button-icon {
    font-size: 1.5rem;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.play-cta-note {
    font-size: 0.95rem;
    color: var(--text-gray);
    margin-top: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.note-icon {
    color: var(--primary-color);
}

.game-features-mini {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.mini-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 10px var(--shadow);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition);
}

.mini-feature:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px var(--shadow-hover);
}

.mini-icon {
    font-size: 1.3rem;
}

/* ==========================================
   About Section
   ========================================== */
.about-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.about-item {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: 0 4px 15px var(--shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.about-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.about-item .icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.about-item h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.about-item p {
    color: var(--text-gray);
    font-size: 1rem;
}

/* ==========================================
   How to Play Section
   ========================================== */
.howtoplay-section {
    padding: var(--spacing-xl) 0;
    background-color: #fff;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.step {
    position: relative;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg);
    color: var(--text-light);
    box-shadow: 0 4px 15px var(--shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.step:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.step-number {
    position: absolute;
    top: -15px;
    left: 20px;
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.step h3 {
    color: var(--text-light);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.step p {
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
}

.tips {
    background: var(--light-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
    max-width: 800px;
    margin: 0 auto;
}

.tips h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.tips ul li {
    padding: var(--spacing-xs) 0;
    color: var(--text-dark);
    font-size: 1rem;
}

/* ==========================================
   Features Section
   ========================================== */
.features-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #2193b0 0%, #6dd5ed 100%);
}

.features-section h2 {
    color: var(--text-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.feature-card:hover {
    transform: translateY(-10px) rotate(1deg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* ==========================================
   FAQ Section
   ========================================== */
.faq-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--light-bg);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 10px var(--shadow);
    border-left: 4px solid var(--secondary-color);
    transition: var(--transition);
    opacity: 0;
    transform: translateX(-20px);
}

.faq-item:hover {
    box-shadow: 0 4px 20px var(--shadow-hover);
    transform: translateX(5px);
}

.faq-item h3 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
}

.faq-item p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ==========================================
   Footer
   ========================================== */
footer {
    background: var(--dark-bg);
    color: var(--text-light);
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.footer-section h4 {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.footer-section ul {
    margin-top: var(--spacing-sm);
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    transition: var(--transition);
}

.tag:hover {
    background: var(--primary-color);
    transform: scale(1.05);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.disclaimer {
    font-size: 0.8rem !important;
    color: rgba(255, 255, 255, 0.5) !important;
}

/* ==========================================
   Back to Top Button
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--text-light);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 15px var(--shadow);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
    box-shadow: 0 6px 20px var(--shadow-hover);
}

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
    h2 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .game-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav-links {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .navbar .container {
        flex-direction: column;
        text-align: center;
    }
    
    .features-grid,
    .about-grid,
    .steps {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .game-container {
        padding-top: 100%; /* More vertical on mobile */
    }
    
    :root {
        --spacing-xl: 2rem;
        --spacing-lg: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .cta-button {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }
    
    .back-to-top {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
        bottom: 20px;
        right: 20px;
    }
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
    .navbar,
    .back-to-top,
    .cta-button {
        display: none;
    }
    
    body {
        color: black;
        background: white;
    }
}

/* ==========================================
   Accessibility
   ========================================== */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

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

/* ==========================================
   Performance Optimizations
   ========================================== */
.game-container iframe {
    will-change: transform;
}

.feature-card,
.step,
.about-item {
    will-change: transform, opacity;
}