/* CSS Variables */
:root {
    --bg-main: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #1f2937;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-primary: #3b82f6;
    --accent-glow: #60a5fa;
    --accent-gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);
    --border-color: #374151;
    --nav-height: 70px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
}

body {
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.section {
    padding: 80px 0;
    position: relative;
    z-index: 2;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    width: 100%;
}

.bg-darker {
    background-color: var(--bg-secondary);
}

.text-center {
    text-align: center;
}

.grid {
    display: grid;
    gap: 30px;
}

.grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-large {
    padding: 14px 32px;
    font-size: 1.1rem;
}

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

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}

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

.btn-glow {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
}

.btn-glow:hover {
    box-shadow: 0 0 25px rgba(139, 92, 246, 0.7);
    transform: scale(1.05);
}

/* Background Animation */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(circle at center, #111827 0%, #000000 100%);
}

.stars {
    background: transparent url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0MDAiIGhlaWdodD0iNDAwIj48Y2lyY2xlIGN4PSI1MCIgY3k9IjUwIiByPSIxIiBmaWxsPSIjZmZmIiBvcGFjaXR5PSIwLjMiLz48Y2lyY2xlIGN4PSIyNTAiIGN5PSIxNTAiIHI9IjEuNSIgZmlsbD0iI2ZmZiIgb3BhY2l0eT0iMC41Ii8+PGNpcmNsZSBjeD0iMTgwIiBjeT0iMzIwIiByPSIwLjUiIGZpbGw9IiNmZmYiIG9wYWNpdHk9IjAuNCIvPjxjaXJjbGUgY3g9IjM1MCIgY3k9IjMwMCIgcj0iMiIgZmlsbD0iI2ZmZiIgb3BhY2l0eT0iMC4yIi8+PC9zdmc+') repeat;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    animation: move-stars 200s linear infinite;
}

@keyframes move-stars {
    from { background-position: 0 0; }
    to { background-position: -10000px 5000px; }
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-glow);
}

/* Hero Section */
.hero-section {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    text-align: center;
    padding-top: var(--nav-height);
}

.hero-content {
    max-width: 800px;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Features */
.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

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

/* Node Status */
.node-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 800px;
    margin: 0 auto;
}

.node-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.node-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.flag {
    font-size: 1.5rem;
}

.node-name {
    font-weight: 600;
}

.node-latency {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: monospace;
    font-size: 1.1rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #10b981; /* Green */
    box-shadow: 0 0 8px #10b981;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Pricing */
.pricing-card {
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.pricing-card.popular {
    border-color: var(--accent-primary);
    transform: scale(1.05);
    z-index: 10;
}

.pricing-card.popular:hover {
    transform: scale(1.08);
}

.badge {
    position: absolute;
    top: 15px;
    right: -35px;
    background: var(--accent-gradient);
    color: white;
    padding: 5px 40px;
    font-size: 0.8rem;
    font-weight: bold;
    transform: rotate(45deg);
}

.pricing-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.pricing-header h3 {
    color: var(--text-secondary);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.price {
    font-size: 3rem;
    font-weight: 800;
}

.price span {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.pricing-features {
    margin-bottom: 30px;
    flex-grow: 1;
}

.pricing-features li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    color: var(--text-secondary);
}

.pricing-features li::before {
    content: '✓';
    color: #10b981;
    margin-right: 10px;
    font-weight: bold;
}

.pricing-card .btn {
    width: 100%;
}

/* Reviews */
.review-card .stars {
    color: #fbbf24;
    margin-bottom: 15px;
    font-size: 1.2rem;
    background: none;
    position: static;
    animation: none;
}

.review-card p {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.review-card .author {
    font-weight: 600;
    text-align: right;
    color: var(--accent-glow);
}

/* FAQ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.02);
}

.toggle-icon {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.faq-item.active .toggle-icon {
    transform: rotate(45deg);
}

/* Knowledge Base */
.kb-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    display: block;
}

.kb-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-3px);
}

.kb-tag {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent-glow);
    border-radius: 4px;
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.kb-card h4 {
    font-size: 1.1rem;
    line-height: 1.5;
}

/* Footer */
footer {
    background: var(--bg-main);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 400px;
}

.footer-brand h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.footer-links h3 {
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

.footer-links a:hover {
    color: var(--accent-glow);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.disclaimer {
    margin-top: 10px;
    font-size: 0.8rem;
    color: #6b7280;
}

/* Responsive */
@media (max-width: 900px) {
    .hero-content h1 { font-size: 3rem; }
    .nav-links { display: none; } /* Simple hiding for mobile for brevity */
    .pricing-card.popular { transform: none; z-index: 1; }
    .pricing-card.popular:hover { transform: translateY(-5px); }
}

@media (max-width: 600px) {
    .hero-content h1 { font-size: 2.5rem; }
    .hero-buttons { flex-direction: column; }
    .grid { grid-template-columns: 1fr; }
}