:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #475569;
    --primary: #0ea5e9;
    --primary-hover: #0284c7;
    --border: #e2e8f0;
    --diamond: #0ea5e9;
    --diamond-dark: #0284c7;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.7;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 1.25rem 2rem;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    text-decoration: none;
    display: flex;
    align-items: center;
    letter-spacing: -0.5px;
}

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

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

main {
    flex: 1;
    max-width: 1100px;
    margin: 0 auto;
    padding: 4rem 2rem;
    width: 100%;
}

.hero {
    text-align: center;
    padding: 5rem 0 4rem;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    line-height: 1.1;
    color: var(--text-main);
    letter-spacing: -1px;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--diamond), var(--diamond-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--diamond), var(--diamond-dark));
    color: #fff;
    padding: 16px 36px;
    border-radius: 99px; /* Pill shape for modern look */
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.2s ease;
    box-shadow: 0 4px 14px 0 rgba(14, 165, 233, 0.39);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background-color: var(--card-bg);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    text-align: left;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background-color: #e0f2fe;
    color: var(--diamond-dark);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    color: var(--text-main);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.6;
}

/* Document Pages (Privacy/Terms) */
.document-content {
    background-color: var(--card-bg);
    padding: 4rem;
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    max-width: 850px;
    margin: 0 auto;
}

.document-content h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.last-updated {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 3rem;
    display: block;
    font-weight: 500;
}

.document-content h2 {
    font-size: 1.5rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-main);
    font-weight: 700;
    border-bottom: 2px solid var(--border);
    padding-bottom: 0.5rem;
}

.document-content p {
    margin-bottom: 1.25rem;
    color: var(--text-muted);
}

.document-content ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    color: var(--text-muted);
}

.document-content li {
    margin-bottom: 0.75rem;
}

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

footer {
    text-align: center;
    padding: 3rem 2rem;
    border-top: 1px solid var(--border);
    background-color: var(--card-bg);
    color: var(--text-muted);
    font-size: 0.95rem;
}

.agency-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.agency-link:hover {
    text-decoration: underline;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    header {
        padding: 1rem;
    }

    .nav-container {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .logo {
        font-size: 1.4rem;
    }

    .nav-links {
        gap: 1.25rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    main {
        padding: 2rem 1rem;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1.05rem;
        padding: 0 0.5rem;
        margin-bottom: 2rem;
    }

    .btn-primary {
        padding: 14px 24px;
        font-size: 1rem;
        width: 100%;
        max-width: 320px;
    }

    .document-content {
        padding: 1.5rem;
        border-radius: 12px;
    }

    .document-content h1 {
        font-size: 1.8rem;
    }

    .document-content h2 {
        font-size: 1.3rem;
        margin-top: 2rem;
    }

    .document-content p, .document-content ul {
        font-size: 0.95rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .feature-card {
        padding: 1.5rem;
    }
    
    footer {
        padding: 2rem 1rem;
    }
}