@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;800&display=swap');

:root {
    --bg-main: #0B0E14;
    --bg-card: #151A23;
    --bg-card-hover: #1A212D;
    --primary: #00E5FF;
    --primary-glow: rgba(0, 229, 255, 0.4);
    --secondary: #7000FF;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --border-color: #2A3143;
    --success: #10B981;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: rgba(11, 14, 20, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: inline-block;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-muted);
    transition: color 0.3s;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    padding: 0.6rem 1.5rem;
    border-radius: 2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--primary-glow);
    border: none;
    cursor: pointer;
    text-align: center;
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(112, 0, 255, 0.5);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.6rem 1.5rem;
    border-radius: 2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 6rem 1rem 2rem;
    background: radial-gradient(circle at 50% 20%, rgba(112, 0, 255, 0.15) 0%, transparent 50%);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #fff, var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
}

.stat-item h3 {
    font-size: 2rem;
    color: var(--primary);
}

.stat-item p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* Section Common */
section {
    padding: 5rem 5%;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    font-weight: 800;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    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: 1rem;
    color: var(--primary);
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

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

/* Pricing */
.pricing-grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.pricing-card {
    background: var(--bg-card);
    border-radius: 1.5rem;
    padding: 2.5rem;
    width: 100%;
    max-width: 350px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-card.popular {
    border-color: var(--secondary);
    box-shadow: 0 0 30px rgba(112, 0, 255, 0.2);
    transform: scale(1.05);
}

.pricing-card:hover {
    transform: translateY(-10px);
}

.pricing-card.popular:hover {
    transform: scale(1.05) translateY(-10px);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 0.3rem 1rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    font-weight: 600;
}

.plan-name {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    text-align: center;
}

.plan-price {
    font-size: 3rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2rem;
}

.plan-price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.plan-features {
    list-style: none;
    margin-bottom: 2.5rem;
    flex-grow: 1;
}

.plan-features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-main);
}

.plan-features li::before {
    content: '✓';
    color: var(--success);
    font-weight: bold;
}

.pricing-card .btn-primary {
    width: 100%;
    padding: 0.8rem;
}

/* Reviews */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.review-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.reviewer {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    font-size: 1.2rem;
    color: #000;
}

.reviewer-info h4 {
    font-size: 1rem;
    margin-bottom: 0.2rem;
}

.reviewer-info span {
    font-size: 0.8rem;
    color: var(--primary);
}

.review-text {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-style: italic;
}

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

.faq-item {
    background: var(--bg-card);
    margin-bottom: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
}

.faq-q {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.faq-a {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Article Section */
.article-links {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.article-links ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.article-links a {
    color: var(--text-muted);
    transition: color 0.3s;
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    .pricing-card.popular {
        transform: none;
    }
    .pricing-card.popular:hover {
        transform: translateY(-5px);
    }
}