:root {
    --bg-primary: #0F0F14;
    --bg-secondary: #16161D;
    --bg-card: #1A1A24;
    --surface: #252532;
    --text-primary: #FFFFFF;
    --text-secondary: #9CA3AF;
    --text-tertiary: #6B7280;
    --accent: #6366F1;
    --accent-light: #818CF8;
    --green: #10B981;
    --orange: #F97316;
    --red: #EF4444;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Header */
.header {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--surface);
}

.app-icon {
    width: 120px;
    height: 120px;
    border-radius: 28px;
    margin: 0 auto 24px;
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
    overflow: hidden;
}

.app-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.app-name {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* Navigation */
.nav {
    display: flex;
    justify-content: center;
    gap: 24px;
    padding: 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--surface);
    flex-wrap: wrap;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

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

.nav a.active {
    color: var(--accent);
    background: rgba(99, 102, 241, 0.1);
}

/* Content */
.content {
    padding: 40px 0;
}

.section {
    margin-bottom: 48px;
}

h1 {
    font-size: 2rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--text-primary);
    padding-top: 16px;
}

h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

ul, ol {
    color: var(--text-secondary);
    margin-bottom: 16px;
    padding-left: 24px;
}

li {
    margin-bottom: 8px;
}

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

a:hover {
    text-decoration: underline;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid var(--surface);
}

.card h3 {
    display: flex;
    align-items: center;
    gap: 12px;
}

.card-icon {
    width: 40px;
    height: 40px;
    background: var(--surface);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 32px 0;
}

.feature-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--surface);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    margin-bottom: 8px;
    padding-top: 0;
}

.feature-card p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
    text-decoration: none;
}

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

.btn-secondary:hover {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* Contact */
.contact-info {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 32px;
    border: 1px solid var(--surface);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--surface);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-icon {
    width: 44px;
    height: 44px;
    background: var(--surface);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* FAQ */
.faq-item {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 12px;
    border: 1px solid var(--surface);
}

.faq-question {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.faq-answer {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid var(--surface);
    background: var(--bg-secondary);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-copyright {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* Privacy Policy Specific */
.policy-section {
    margin-bottom: 32px;
}

.policy-section h2 {
    border-bottom: 1px solid var(--surface);
    padding-bottom: 12px;
}

.highlight-box {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 12px;
    padding: 20px;
    margin: 24px 0;
}

.highlight-box.warning {
    background: rgba(249, 115, 22, 0.1);
    border-color: rgba(249, 115, 22, 0.3);
}

.highlight-box h3 {
    color: var(--green);
    margin-bottom: 8px;
    padding-top: 0;
}

.highlight-box.warning h3 {
    color: var(--orange);
}

.last-updated {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    font-style: italic;
}

/* Responsive */
@media (max-width: 600px) {
    .header {
        padding: 40px 20px;
    }
    
    .app-name {
        font-size: 2rem;
    }
    
    .app-icon {
        width: 100px;
        height: 100px;
        border-radius: 24px;
    }
    
    .nav {
        gap: 12px;
    }
    
    .nav a {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 1.25rem;
    }
    
    .container {
        padding: 24px 16px;
    }
}