/* BitChats Website Styles */
:root {
    --primary-green: #00ff00;
    --dark-green: #00cc00;
    --light-green: #33ff33;
    --bg-dark: #000000;
    --bg-light: #ffffff;
    --text-dark: #333333;
    --text-light: #ffffff;
    --gray-light: #f8f9fa;
    --gray-medium: #6c757d;
    --border-color: #dee2e6;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1a1a1a 100%);
    color: var(--text-light);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-green);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Main Content */
.main-content {
    margin-top: 80px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1a1a1a 100%);
    color: var(--text-light);
    padding: 6rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--primary-green);
}

.hero .subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #cccccc;
}

.hero .slogan {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    color: var(--light-green);
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--primary-green);
    color: var(--bg-dark);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
}

.btn:hover {
    background: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 255, 0, 0.3);
}

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

.btn-secondary:hover {
    background: var(--primary-green);
    color: var(--bg-dark);
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--gray-light);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-green);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

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

/* Section Styles */
.section {
    padding: 4rem 0;
}

.section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

.section-dark {
    background: var(--bg-dark);
    color: var(--text-light);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: 3rem 0 1rem;
    text-align: center;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
}

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 1rem;
    color: var(--gray-medium);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
    }

    .nav-links {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero {
        padding: 4rem 0;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .subtitle {
        font-size: 1.2rem;
    }

    .hero .slogan {
        font-size: 1rem;
    }

    .container {
        padding: 0 1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .section {
        padding: 3rem 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero .subtitle {
        font-size: 1.1rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }

    .nav-links {
        font-size: 0.9rem;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-green { color: var(--primary-green); }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-3 { margin-top: 1.5rem; }