:root {
    /* Color Palette - Premium Dark Theme */
    --bg-color: #000000;
    --bg-secondary: #121212;
    --text-primary: #f5f5f7;
    --text-secondary: #86868b;
    --accent-color: #2997ff;
    /* Apple Blue */
    --accent-hover: #0077ed;
    --border-color: #333333;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Typography */
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    --font-size-base: 16px;
    --font-size-h1: 56px;
    --font-size-h2: 40px;
    --font-size-h3: 28px;

    /* Spacing */
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 32px;
    --spacing-xl: 64px;
    --container-width: 1200px;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

/* Header / Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.logo {
    font-weight: 600;
    font-size: 20px;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    font-size: 14px;
    color: var(--text-secondary);
}

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding-top: 60px;
    /* Offset for fixed header */
}

.hero h1 {
    font-size: var(--font-size-h1);
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #fff 0%, #aaa 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 24px;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: var(--spacing-lg);
}

.cta-button {
    display: inline-block;
    background-color: var(--text-primary);
    color: var(--bg-color);
    padding: 12px 24px;
    border-radius: 980px;
    font-weight: 500;
    font-size: 16px;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.cta-button:hover {
    transform: scale(1.05);
    background-color: #fff;
}

/* Features / Apps Section */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.card {
    background: var(--bg-secondary);
    border-radius: 18px;
    padding: var(--spacing-lg);
    border: 1px solid var(--glass-border);
    transition: transform 0.3s ease;
}

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

.card h3 {
    font-size: 24px;
    margin-bottom: var(--spacing-sm);
}

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

/* Footer */
footer {
    background-color: var(--bg-secondary);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-links h4 {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.footer-links ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    font-size: 14px;
    color: var(--text-secondary);
}

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

.copyright {
    margin-top: var(--spacing-xl);
    text-align: center;
    font-size: 12px;
    color: var(--text-secondary);
}

/* Support Page Styles */
.support-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
}

.support-intro {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 18px;
}

.faq-item {
    margin-bottom: 16px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 16px;
}

.faq-item summary {
    cursor: pointer;
    font-weight: 500;
}

.faq-item p {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.contact-form-container {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: 18px;
    border: 1px solid var(--glass-border);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: white;
    font-family: inherit;
    font-size: 14px;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --font-size-h1: 40px;
    }

    .hero p {
        font-size: 18px;
    }

    .support-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}