:root {
    --bg-dark: #0b0e14;
    --bg-card: #151a25;
    --primary: #00ff88;
    --primary-hover: #00d672;
    --text-main: #ffffff;
    --text-muted: #9ba3b5;
    --border-color: #232b3d;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

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

.highlight {
    color: var(--primary);
}

/* Header */
.header {
    background-color: rgba(11, 14, 20, 0.95);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

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

.nav-links a {
    font-weight: 500;
    font-size: 16px;
    color: var(--text-muted);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--bg-dark);
    border: 2px solid var(--primary);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 255, 136, 0.3);
}

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

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

/* Hero Section */
.hero {
    padding: 100px 0;
    text-align: center;
    background: radial-gradient(circle at center, #152220 0%, var(--bg-dark) 70%);
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero .subtitle {
    font-size: 20px;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 40px;
}

.cta-group {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* Section Common */
.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
}

/* Features */
.features {
    padding: 80px 0;
    background-color: var(--bg-dark);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 40px 30px;
    border-radius: 16px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

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

.card-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.card p {
    color: var(--text-muted);
}

/* How It Works */
.how-it-works {
    padding: 80px 0;
    background-color: #0f131c;
}

.steps {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
}

.step-num {
    width: 60px;
    height: 60px;
    background-color: var(--primary);
    color: var(--bg-dark);
    font-size: 24px;
    font-weight: bold;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.step p {
    color: var(--text-muted);
}

/* Content Pages (About / Privacy) */
.page-header {
    padding: 80px 0 40px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: 48px;
    margin-bottom: 16px;
}

.page-header .subtitle {
    font-size: 20px;
    color: var(--text-muted);
}

.content-section {
    padding: 60px 0 100px;
}

.text-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--bg-card);
    padding: 50px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.text-content h2 {
    font-size: 28px;
    margin: 30px 0 15px;
    color: var(--primary);
}

.text-content h2:first-child {
    margin-top: 0;
}

.text-content p {
    margin-bottom: 20px;
    color: var(--text-muted);
    font-size: 16px;
}

.text-content ul {
    margin-bottom: 20px;
    padding-left: 20px;
    color: var(--text-muted);
}

.text-content li {
    margin-bottom: 10px;
}

.text-content strong {
    color: var(--text-main);
}

/* Footer */
.footer {
    background-color: #07090d;
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

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

.footer-brand {
    max-width: 300px;
}

.footer-brand h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.footer-brand p {
    color: var(--text-muted);
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    color: var(--text-muted);
    margin-bottom: 10px;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hero h1 {
        font-size: 40px;
    }
    .steps {
        flex-direction: column;
    }
    .text-content {
        padding: 30px 20px;
    }
}