/* Flags Mastery Landing Page Styles */
/* Design matching TetraBlocks for consistency */

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

:root {
    --color-bg-start: #0a1628;
    --color-bg-end: #0d3b4c;
    --color-accent-cyan: #00d4ff;
    --color-accent-purple: #7b2ff7;
    --color-accent-coral: #ff6b6b;
    --color-accent-green: #4ade80;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0b3c6;
    --color-card-bg: rgba(255, 255, 255, 0.05);
    --color-card-border: rgba(255, 255, 255, 0.1);
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
    color: var(--color-text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 40%),
                radial-gradient(circle at 70% 80%, rgba(123, 47, 247, 0.1) 0%, transparent 40%);
    animation: float 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-2%, 2%) rotate(1deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.app-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    animation: bounce 2s ease-in-out infinite;
}

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

.gradient-text {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-purple) 50%, var(--color-accent-coral) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.tagline {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}

.description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

/* Store Buttons */
.store-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.store-badge {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.store-badge:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.store-badge img {
    height: 50px;
    width: auto;
}

/* Open in App Button (Mobile) */
.open-app-container {
    margin-top: 1rem;
}

.open-app-btn {
    background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-purple) 100%);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.open-app-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

/* Features Section */
.features {
    padding: 5rem 2rem;
    background: rgba(0, 0, 0, 0.2);
}

.features h2, .how-to-play h2, .cta h2 {
    text-align: center;
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    margin-bottom: 3rem;
    color: var(--color-text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(0, 212, 255, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--color-text-primary);
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* How to Play Section */
.how-to-play {
    padding: 5rem 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-accent-cyan) 0%, var(--color-accent-purple) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
}

.step-content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

.step-content p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* CTA Section */
.cta {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, rgba(123, 47, 247, 0.2) 0%, rgba(0, 212, 255, 0.2) 100%);
    text-align: center;
}

.cta p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* QR Code (Desktop) */
.qr-container {
    margin-top: 2rem;
}

.qr-text {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.qr-code {
    display: inline-block;
    padding: 1rem;
    background: white;
    border-radius: 12px;
}

.qr-code canvas, .qr-code img {
    display: block;
}

/* Footer */
footer {
    padding: 2rem;
    background: rgba(0, 0, 0, 0.3);
    text-align: center;
}

.footer-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-text-primary);
    text-decoration: underline;
}

.copyright {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 600px) {
    .hero {
        min-height: auto;
        padding: 4rem 1.5rem;
    }

    .app-icon {
        font-size: 4rem;
    }

    .description {
        font-size: 1rem;
    }

    .store-badge img {
        height: 45px;
    }

    .features, .how-to-play, .cta {
        padding: 3rem 1.5rem;
    }

    .step {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-links {
        gap: 1rem;
    }
}