:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --accent: #f59e0b;
    --dark: #1f2937;
    --light: #f3f4f6;
    --success: #10b981;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
    min-height: 100vh;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: rgba(0,0,0,0.3);
    backdrop-filter: blur(10px);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.coins {
    background: rgba(255,255,255,0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.coin-icon { font-size: 1.2rem; }

.btn-premium {
    background: linear-gradient(135deg, var(--accent), #d97706);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn-premium:hover { transform: scale(1.05); }

.hero {
    text-align: center;
    padding: 3rem 1rem;
}

.hero h1 { font-size: 3rem; margin-bottom: 0.5rem; }

.hero p { opacity: 0.8; margin-bottom: 1.5rem; }

.stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 1rem;
}

.stats span { display: block; font-size: 1.5rem; font-weight: 700; color: var(--accent); }

.ad-banner {
    max-width: 728px;
    margin: 1rem auto;
    min-height: 90px;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.game-card {
    background: rgba(255,255,255,0.05);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
    position: relative;
    border: 2px solid rgba(255,255,255,0.1);
    transition: all 0.3s;
}

.game-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.game-card.premium { border-color: var(--accent); }

.game-preview {
    font-size: 5rem;
    margin-bottom: 1rem;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.premium-badge {
    position: absolute;
    top: -10px;
    right: 10px;
    background: linear-gradient(135deg, var(--accent), #d97706);
    padding: 0.25rem 0.75rem;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 700;
}

.game-card h3 { margin-bottom: 0.5rem; font-size: 1.25rem; }

.game-card p { opacity: 0.7; font-size: 0.9rem; margin-bottom: 1rem; }

.game-meta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.8rem;
}

.difficulty { color: var(--success); }
.difficulty.medium { color: var(--accent); }
.difficulty.hard { color: #ef4444; }

.reward { color: #fbbf24; }

.btn-play {
    width: 100%;
    padding: 0.875rem;
    background: var(--primary);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-play:hover { background: var(--primary-dark); }

.btn-play.locked {
    background: linear-gradient(135deg, #6b7280, #4b5563);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active { display: flex; }

.modal-content {
    background: var(--dark);
    padding: 2rem;
    border-radius: 16px;
    max-width: 500px;
    width: 90%;
    position: relative;
}

.modal-content.game-frame {
    max-width: 600px;
}

.close {
    position: absolute;
    top: 10px; right: 15px;
    font-size: 2rem;
    cursor: pointer;
    color: white;
}

#game-container {
    background: #000;
    border-radius: 8px;
    margin: 1rem 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
}

.game-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.game-controls button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
}

/* PayPal Modal */
.coin-packages {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
}

.package {
    background: rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.package:hover, .package.selected {
    background: var(--primary);
    transform: scale(1.05);
}

.package.popular { border: 2px solid var(--accent); }

.package .badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    padding: 0.25rem 0.5rem;
    border-radius: 10px;
    font-size: 0.7rem;
}

.package .amount { font-weight: 700; margin-bottom: 0.5rem; }
.package .price { color: var(--accent); font-size: 1.25rem; font-weight: 700; }

#paypal-button-container {
    margin-top: 1rem;
}

footer {
    text-align: center;
    padding: 2rem;
    opacity: 0.7;
}

footer .disclaimer { font-size: 0.8rem; margin-top: 0.5rem; opacity: 0.5; }

/* Payment Demo Mode */
.demo-banner {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    text-align: center;
}

#stripe-card-element {
    background: rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.package.selected {
    background: var(--primary);
    border: 2px solid white;
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .stats { flex-direction: column; gap: 1rem; }
    .games-grid { grid-template-columns: 1fr; padding: 1rem; }
    .coin-packages { grid-template-columns: 1fr; }
}

/* Game Canvas Styles */
canvas {
    border-radius: 8px;
    display: block;
}

.game-ui {
    position: absolute;
    top: 10px;
    left: 10px;
    color: white;
    font-family: monospace;
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .stats { flex-direction: column; gap: 1rem; }
    .games-grid { grid-template-columns: 1fr; padding: 1rem; }
    .coin-packages { grid-template-columns: 1fr; }
}