/* CSS Variables */
:root {
    --primary-color: #007AFF;
    --secondary-color: #5856D6;
    --success-color: #34C759;
    --background-color: #000000;
    --surface-color: #1C1C1E;
    --card-color: #2C2C2E;
    --text-primary: #FFFFFF;
    --text-secondary: #8E8E93;
    --border-color: #3A3A3C;
    --gradient-start: #007AFF;
    --gradient-end: #5856D6;
    --max-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    opacity: 0.8;
}

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

/* Navigation */
.navbar {
    background-color: var(--surface-color);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    background-color: rgba(28, 28, 30, 0.95);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: inherit;
    text-decoration: none;
}

.nav-logo {
    width: 40px;
    height: 40px;
    border-radius: 10px;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: var(--spacing-lg) 0;
    text-align: center;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--text-primary);
    color: var(--background-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

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

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.2rem;
}

/* Sections */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
}

/* Features Section */
.features {
    padding: var(--spacing-lg) 0;
    background-color: var(--background-color);
}

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

.feature-card {
    background-color: var(--card-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 122, 255, 0.2);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

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

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

/* About Section */
.about {
    padding: var(--spacing-lg) 0;
    background-color: var(--surface-color);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.about-list {
    list-style: none;
    margin-top: var(--spacing-md);
}

.about-list li {
    padding: var(--spacing-sm);
    font-size: 1.1rem;
    color: var(--text-secondary);
    border-left: 3px solid var(--primary-color);
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-sm);
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-lg) 0;
    text-align: center;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

/* Footer */
.footer {
    background-color: var(--surface-color);
    padding: var(--spacing-md) 0 var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

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

.footer-section h3, .footer-section h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.footer-section p,
.footer-section ul {
    color: var(--text-secondary);
}

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

.footer-section li {
    margin-bottom: var(--spacing-xs);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* Page Header */
.page-header {
    text-align: center;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.last-updated {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

/* Support Page */
.support-page {
    padding-bottom: var(--spacing-lg);
}

.support-content {
    max-width: 900px;
    margin: 0 auto;
}

.support-section,
.contact-section,
.troubleshooting-section {
    margin-bottom: var(--spacing-lg);
}

.support-section h2,
.contact-section h2,
.troubleshooting-section h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.faq-item,
.troubleshooting-item {
    background-color: var(--card-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
}

.faq-item h3,
.troubleshooting-item h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}

.faq-item p,
.troubleshooting-item ol {
    color: var(--text-secondary);
    line-height: 1.6;
}

.troubleshooting-item ol {
    margin-left: var(--spacing-md);
}

.troubleshooting-item li {
    margin-bottom: var(--spacing-xs);
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.contact-card {
    background-color: var(--card-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
}

.contact-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.contact-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.contact-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.small-text {
    font-size: 0.9rem;
    font-style: italic;
}

.support-info {
    background-color: var(--card-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-top: var(--spacing-md);
}

.support-info h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.support-info ul {
    margin-left: var(--spacing-md);
    color: var(--text-secondary);
}

.support-info li {
    margin-bottom: var(--spacing-xs);
}

/* Contact Form */
.contact-form-container {
    margin: var(--spacing-md) 0;
}

.contact-form {
    background-color: var(--card-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
}

.form-group label {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-form button[type="submit"] {
    width: 100%;
    margin-top: var(--spacing-md);
}

.form-status {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: 8px;
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background-color: rgba(52, 199, 89, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.form-status.error {
    display: block;
    background-color: rgba(255, 59, 48, 0.1);
    border: 1px solid #FF3B30;
    color: #FF3B30;
}

/* Privacy Page */
.privacy-page {
    padding-bottom: var(--spacing-lg);
}

.privacy-content {
    max-width: 900px;
    margin: 0 auto;
}

.privacy-section {
    margin-bottom: var(--spacing-lg);
}

.privacy-section h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: var(--spacing-xs);
}

.privacy-section h3 {
    font-size: 1.5rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.privacy-section p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.privacy-section ul,
.privacy-section ol {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.privacy-section li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.contact-info {
    background-color: var(--card-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-top: var(--spacing-sm);
}

.contact-info p {
    margin-bottom: var(--spacing-xs);
}

.consent-section {
    background-color: var(--card-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px solid var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

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

    .section-title {
        font-size: 2rem;
    }

    .nav-links {
        gap: var(--spacing-sm);
        font-size: 0.9rem;
    }

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

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-md: 1rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .nav-links {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.faq-item,
.contact-card {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus States */
a:focus,
button:focus,
.btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}