/* Global Variables & Reset */
:root {
    --bg-color: #0d0d12;
    --card-bg: rgba(255, 255, 255, 0.05);
    --primary-color: #6366f1;
    /* Indigo */
    --accent-color: #8b5cf6;
    /* Violet */
    --text-color: #f3f4f6;
    --text-muted: #9ca3af;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --gradient-main: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-text: linear-gradient(to right, #c084fc, #6366f1);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --radius: 16px;
    --transition: all 0.3s ease;
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

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

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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
}

h1 {
    font-size: 3.5rem;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    display: block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-main);
    border-radius: 2px;
}

/* Guarantee */
.guarantee {
    text-align: center;
    max-width: 800px;
    margin: 40px auto;
    padding: 2.5rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    border-radius: 24px;
    backdrop-filter: blur(10px);
}

.guarantee-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    display: inline-block;
    animation: pulse 2s infinite;
}

p {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    text-align: center;
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    backdrop-filter: blur(10px);
    border: var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(13, 13, 18, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: var(--glass-border);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

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

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, rgba(13, 13, 18, 0) 70%);
    z-index: -1;
    filter: blur(60px);
}

.hero p.subtitle {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

/* Featured Brands */
.brands {
    padding: 40px 0;
    background: rgba(255, 255, 255, 0.02);
    border-top: var(--glass-border);
    border-bottom: var(--glass-border);
}

.brand-wrapper {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    align-items: center;
    opacity: 0.7;
}

.brand-item {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-muted);
    transition: var(--transition);
}

.brand-item:hover {
    color: white;
    opacity: 1;
}

/* Section General */
section {
    padding: 80px 0;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 2rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    border: var(--glass-border);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* Content Block */
.content-block {
    max-width: 900px;
    margin: 0 auto;
    background: var(--card-bg);
    padding: 50px;
    border-radius: var(--radius);
    border: var(--glass-border);
}

.content-block h3 {
    margin-top: 2rem;
    color: var(--primary-color);
}

.content-block ul {
    list-style: disc;
    margin-left: 20px;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.content-block li {
    margin-bottom: 0.5rem;
}

/* Pricing Section */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 2rem;
}

.pricing-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    border: var(--glass-border);
    text-align: center;
    position: relative;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.pricing-card.popular {
    background: linear-gradient(145deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 1px solid var(--primary-color);
    transform: scale(1.05);
    z-index: 2;
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-main);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.pricing-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.pricing-price {
    font-size: 3rem;
    font-weight: 800;
    margin: 1.5rem 0;
    color: white;
}

.pricing-period {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.pricing-discount {
    color: var(--success-color);
    font-weight: 600;
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.pricing-features {
    margin-bottom: 2rem;
    text-align: left;
    flex-grow: 1;
}

.pricing-features li {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

/* Secondary CTA (Special Offer) */
.special-offer {
    background: linear-gradient(to right, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
    border-radius: var(--radius);
    padding: 3rem;
    text-align: center;
    border: var(--glass-border);
    margin: 40px 0;
}

.highlight {
    color: var(--accent-color);
    font-weight: 700;
}

/* Reviews */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.review-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--radius);
    border: var(--glass-border);
}

.stars {
    color: #fbbf24;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.review-author {
    margin-top: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.avatar-placeholder {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        text-shadow: 0 0 0 rgba(16, 185, 129, 0);
    }

    50% {
        transform: scale(1.1);
        text-shadow: 0 0 20px rgba(16, 185, 129, 0.5);
    }

    100% {
        transform: scale(1);
        text-shadow: 0 0 0 rgba(16, 185, 129, 0);
    }
}

/* Footer */
footer {
    background: rgba(13, 13, 18, 0.95);
    padding: 50px 0 20px;
    border-top: var(--glass-border);
    text-align: center;
}

.footer-links {
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .nav-menu {
        display: none;
        /* Simple hiding for first iteration, or use JS for toggle */
    }

    .hero {
        padding: 120px 0 60px;
    }

    .pricing-card.popular {
        transform: none;
    }

    .brand-wrapper {
        gap: 30px;
    }
}