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

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gold-gradient: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    
    --bg-dark: #0a0a0f;
    --bg-card: rgba(17, 17, 27, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.05);
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --text-muted: #6b6b85;
    
    --success: #10b981;
    --info: #3b82f6;
    --warning: #f59e0b;
    
    --border-radius: 16px;
    --border-radius-lg: 24px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Animated Star Background */
.stars, .stars2, .stars3 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.stars {
    background: transparent url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="2" height="2"><circle cx="1" cy="1" r="1" fill="white" opacity="0.3"/></svg>') repeat;
    animation: starsMove 100s linear infinite;
}

.stars2 {
    background: transparent url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="3" height="3"><circle cx="1.5" cy="1.5" r="1" fill="white" opacity="0.2"/></svg>') repeat;
    animation: starsMove 150s linear infinite;
}

.stars3 {
    background: transparent url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="4" height="4"><circle cx="2" cy="2" r="1.5" fill="white" opacity="0.1"/></svg>') repeat;
    animation: starsMove 200s linear infinite;
}

@keyframes starsMove {
    from { transform: translateY(0); }
    to { transform: translateY(-1000px); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
    animation: fadeInDown 0.8s ease-out;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.header-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--success);
}

/* Main Content */
.main-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* Product Showcase */
.product-showcase {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.product-image-wrapper {
    position: relative;
    margin-bottom: 32px;
}

.product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 6px 16px;
    background: var(--gold-gradient);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
    animation: pulse 2s infinite;
}

.product-image {
    position: relative;
    height: 300px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.orb-1 {
    width: 200px;
    height: 200px;
    background: #667eea;
    top: -50px;
    left: -50px;
}

.orb-2 {
    width: 150px;
    height: 150px;
    background: #764ba2;
    bottom: -30px;
    right: -30px;
    animation-delay: -2s;
}

.orb-3 {
    width: 100px;
    height: 100px;
    background: #f093fb;
    top: 50%;
    left: 50%;
    animation-delay: -4s;
}

.product-icon {
    width: 120px;
    height: 120px;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 4px 20px rgba(102, 126, 234, 0.5));
    animation: rotate 20s linear infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(20px, 20px); }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

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

.product-info {
    color: var(--text-primary);
}

.product-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-description {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.features {
    display: grid;
    gap: 16px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-glass);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(8px);
}

.feature-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

/* Payment Card */
.payment-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    position: sticky;
    top: 40px;
    height: fit-content;
}

.price-section {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.price-label {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.price-display {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 12px;
}

.currency {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-secondary);
}

.amount {
    font-size: 72px;
    font-weight: 900;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.period {
    font-size: 24px;
    color: var(--text-secondary);
    margin-left: 4px;
}

.price-note {
    font-size: 14px;
    color: var(--text-muted);
}

/* Checkout Button */
.checkout-btn {
    width: 100%;
    padding: 20px 32px;
    background: var(--primary-gradient);
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 700;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
    margin-bottom: 24px;
}

.checkout-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.6);
}

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

.btn-icon {
    width: 24px;
    height: 24px;
    transition: transform 0.3s ease;
}

.checkout-btn:hover .btn-icon {
    transform: translateX(4px);
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.checkout-btn:hover .btn-shine {
    left: 100%;
}

/* Payment Methods */
.payment-methods {
    margin-bottom: 24px;
}

.methods-label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-align: center;
}

.methods-icons {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

.payment-icon {
    padding: 6px 12px;
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Security Badges */
.security-badges {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--bg-glass);
    border-radius: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    margin-top: 60px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.footer strong {
    color: var(--text-primary);
}

.footer-links {
    margin-top: 12px;
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: center;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 24px;
    z-index: 9999;
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay p {
    color: var(--text-secondary);
    font-size: 16px;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Responsive Design */
@media (max-width: 968px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .payment-card {
        position: static;
    }
    
    .product-title {
        font-size: 28px;
    }
    
    .amount {
        font-size: 56px;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 20px 16px;
    }
    
    .header {
        margin-bottom: 40px;
    }
    
    .logo {
        font-size: 20px;
    }
    
    .product-showcase,
    .payment-card {
        padding: 24px;
    }
    
    .product-image {
        height: 200px;
    }
    
    .product-title {
        font-size: 24px;
    }
    
    .amount {
        font-size: 48px;
    }
    
    .checkout-btn {
        padding: 16px 24px;
        font-size: 16px;
    }
}