:root {
    --primary: #00c853;
    --primary-hover: #00e676;
    --bg-dark: #0B0B0B;
    --bg-card: #161b22;
    --text-main: #ffffff;
    --text-muted: #8b949e;
    --border: #30363d;
    --font-main: 'Inter', sans-serif;
    --gradient: linear-gradient(135deg, #00c853 0%, #00e676 100%);
}

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

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

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    position: fixed;
    width: 100%;
    top: 0;
    background: rgba(11, 11, 11, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-weight: 800;
    font-size: 24px;
    color: var(--text-main);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: var(--primary);
}

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

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

.cta-btn {
    background: var(--gradient);
    color: #000;
    padding: 10px 24px;
    border-radius: 99px;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.2s, box-shadow 0.2s;
    display: inline-block;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 200, 83, 0.3);
}

/* Hero Section */
.hero {
    padding: 160px 5% 80px;
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 64px;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(to right, #fff, #aaa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 20px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 10px 24px;
    border-radius: 99px;
    text-decoration: none;
    font-weight: 600;
    transition: border-color 0.2s;
}

.secondary-btn:hover {
    border-color: var(--text-main);
}

/* Preview Image */
.hero-preview {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    margin-top: 40px;
    position: relative;
}

.hero-preview img {
    width: 100%;
    height: auto;
    display: block;
}

/* Features Grid */
.features {
    padding: 80px 5%;
    background: var(--bg-card);
}

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

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: rgba(255, 255, 255, 0.03);
    padding: 32px;
    border-radius: 16px;
    border: 1px solid var(--border);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--primary);
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

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

/* Footer */
footer {
    padding: 80px 5% 40px;
    border-top: 1px solid var(--border);
    background: var(--bg-dark);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 16px;
    color: var(--text-main);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
}

.footer-col ul li a:hover {
    color: var(--primary);
}

.copyright {
    text-align: center;
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 42px;
    }
}