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

:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --accent: #8b5cf6;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: rgba(59, 130, 246, 0.2);
    --success: #10b981;
    --warning: #f59e0b;
    --radius: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 24px;
}

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

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

.nav-auth {
    display: flex;
    gap: 12px;
    align-items: center;
}

.btn {
    padding: 8px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

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

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

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
}

.btn-block {
    width: 100%;
    text-align: center;
}

.hero {
    padding: 140px 0 80px;
    text-align: center;
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.1) 0%, transparent 100%);
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.cta-button {
    display: inline-block;
    padding: 14px 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 500;
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
}

section {
    padding: 80px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: transform 0.3s, border-color 0.3s;
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    margin-bottom: 12px;
    font-size: 1.2rem;
}

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

.datacenters {
    background: rgba(30, 41, 59, 0.5);
}

.dc-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.dc-card {
    background: var(--bg-card);
    padding: 20px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
    position: relative;
}

.dc-card:hover {
    border-color: var(--primary);
}

.dc-flag {
    font-size: 2rem;
    margin-bottom: 8px;
}

.dc-card h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}

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

.dc-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--accent);
    color: white;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 4px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    padding: 30px;
    position: relative;
    transition: all 0.3s;
}

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

.product-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.2);
}

.product-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
}

.product-header {
    text-align: center;
    margin-bottom: 24px;
}

.product-header h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.product-price {
    font-size: 1.5rem;
}

.price-value {
    font-weight: bold;
    color: var(--primary);
}

.price-unit {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.product-specs {
    list-style: none;
    margin-bottom: 24px;
}

.product-specs li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.product-specs li:last-child {
    border-bottom: none;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary);
}

.faq-item.active .faq-question::after {
    content: '-';
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s;
    color: var(--text-secondary);
}

.faq-item.active .faq-answer {
    padding: 0 20px 20px;
    max-height: 200px;
}

.contact-info {
    max-width: 500px;
    margin: 0 auto;
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.contact-item {
    padding: 12px 0;
    display: flex;
}

.contact-label {
    color: var(--text-secondary);
    min-width: 100px;
}

.contact-value {
    color: var(--primary);
}

.footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 30px;
    width: 100%;
    max-width: 400px;
    position: relative;
    border: 1px solid var(--border-color);
}

.modal-large {
    max-width: 600px;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-title {
    text-align: center;
    margin-bottom: 24px;
}

.modal-tabs {
    display: flex;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-tab {
    flex: 1;
    padding: 12px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}

.modal-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.dashboard {
    padding-top: 10px;
}

.dash-header {
    margin-bottom: 24px;
}

.dash-user {
    display: flex;
    align-items: center;
    gap: 16px;
}

.avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.dash-name {
    font-size: 1.2rem;
    font-weight: 500;
}

.dash-email {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.dash-stats {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.dash-stat {
    background: var(--bg-dark);
    padding: 16px 24px;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
}

.dash-stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
}

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

.dash-section h3 {
    margin-bottom: 16px;
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.vps-item {
    background: var(--bg-dark);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.vps-info h4 {
    margin-bottom: 4px;
}

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

.vps-status {
    padding: 4px 12px;
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
    border-radius: 20px;
    font-size: 0.8rem;
}

.order-summary {
    padding-top: 10px;
}

.order-row {
    padding: 12px 0;
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.order-row select {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 6px;
}

.order-total {
    font-size: 1.2rem;
    font-weight: bold;
    border-bottom: none;
}

#order-total-price {
    color: var(--primary);
}

@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .dc-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hero-title {
        font-size: 2rem;
    }
    .hero-stats {
        gap: 30px;
    }
    .feature-grid {
        grid-template-columns: 1fr;
    }
    .product-grid {
        grid-template-columns: 1fr;
    }
    .dc-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .dash-stats {
        flex-direction: column;
    }
}