/* SEO Landing Pages - Shared Styles */
/* Used by: talk-to-strangers-india, english-speaking-practice, anonymous-voice-call, random-voice-call */

:root {
    --bg: #000;
    --bg-elevated: #1c1c1e;
    --accent: #0a84ff;
    --accent-glow: rgba(10, 132, 255, 0.3);
    --text: #fff;
    --text-secondary: #8e8e93;
    --border: rgba(255, 255, 255, 0.1);
    --radius: 16px;
    --success: #30d158;
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.7;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
    font-size: 18px;
}

.nav-brand svg {
    color: var(--accent);
}

.nav-cta {
    background: var(--accent);
    color: white;
    padding: 10px 20px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: opacity 0.2s;
}

.nav-cta:hover {
    opacity: 0.9;
}

/* Hero Section */
.hero {
    padding: 80px 20px;
    text-align: center;
    background: radial-gradient(ellipse at top, rgba(10, 132, 255, 0.15) 0%, transparent 50%);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-elevated);
    border-radius: 100px;
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 24px;
    border: 1px solid var(--border);
}

.hero h1 {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, #8e8e93 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
}

/* CTA Button */
.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: white;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    box-shadow: 0 0 30px var(--accent-glow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px var(--accent-glow);
}

/* Container */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 20px;
}

/* Section Titles */
.section-title {
    font-size: 28px;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-size: 16px;
}

/* Grid Layouts */
.cities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
    margin: 40px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin: 40px 0;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin: 40px 0;
}

.privacy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin: 40px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 40px 0;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

/* Cards */
.city-card {
    background: var(--bg-elevated);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    border: 1px solid var(--border);
    transition: transform 0.2s;
}

.city-card:hover {
    transform: translateY(-2px);
}

.city-card .emoji {
    font-size: 32px;
    margin-bottom: 8px;
}

.city-card h3 {
    font-size: 16px;
    margin-bottom: 4px;
}

.city-card p {
    font-size: 12px;
    color: var(--text-secondary);
}

.feature-card,
.benefit-card,
.privacy-card {
    background: var(--bg-elevated);
    border-radius: var(--radius);
    padding: 28px;
    border: 1px solid var(--border);
    transition: transform 0.2s;
}

.feature-card:hover,
.benefit-card:hover,
.privacy-card:hover {
    transform: translateY(-2px);
}

.feature-card .icon,
.benefit-card .icon,
.privacy-card .icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.feature-card h3,
.benefit-card h3,
.privacy-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.feature-card p,
.benefit-card p,
.privacy-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

.privacy-card {
    text-align: center;
}

.privacy-card .icon {
    font-size: 48px;
}

/* Stats */
.stat {
    background: var(--bg-elevated);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    border: 1px solid var(--border);
}

.stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Content Sections */
.content-section {
    background: var(--bg-elevated);
    border-radius: var(--radius);
    padding: 40px;
    margin: 40px 0;
    border: 1px solid var(--border);
}

.content-section h2 {
    font-size: 24px;
    margin-bottom: 16px;
}

.content-section p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.content-section ul {
    color: var(--text-secondary);
    margin-left: 20px;
    margin-bottom: 16px;
}

.content-section li {
    margin-bottom: 8px;
}

/* How It Works */
.how-it-works,
.how-works,
.tech-section {
    background: var(--bg-elevated);
    border-radius: var(--radius);
    padding: 40px;
    margin: 40px 0;
    border: 1px solid var(--border);
}

.how-it-works h2,
.how-works h2,
.tech-section h2 {
    font-size: 24px;
    margin-bottom: 24px;
    text-align: center;
}

.steps {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 150px;
    text-align: center;
    position: relative;
}

.step-number,
.step-icon {
    width: 50px;
    height: 50px;
    background: var(--accent);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 20px;
    margin: 0 auto 16px;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: rgba(10, 132, 255, 0.15);
    color: var(--text);
    font-size: 36px;
}

.step h4 {
    font-size: 16px;
    margin-bottom: 8px;
}

.step p {
    font-size: 13px;
    color: var(--text-secondary);
}

.step::after {
    content: '→';
    position: absolute;
    right: -20px;
    top: 40px;
    font-size: 24px;
    color: var(--accent);
}

.step:last-child::after {
    display: none;
}

/* Tech Items */
.tech-item {
    background: rgba(10, 132, 255, 0.1);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.tech-item .icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.tech-item h4 {
    font-size: 14px;
    margin-bottom: 4px;
}

.tech-item p {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Tips */
.tip {
    background: rgba(48, 209, 88, 0.1);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(48, 209, 88, 0.2);
}

.tip h4 {
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--success);
}

.tip p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Comparison Table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.comparison-table th,
.comparison-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    background: rgba(10, 132, 255, 0.1);
    color: var(--accent);
    font-size: 14px;
}

.comparison-table td {
    font-size: 14px;
    color: var(--text-secondary);
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, rgba(10, 132, 255, 0.15) 0%, rgba(102, 126, 234, 0.15) 100%);
    border-radius: 24px;
    padding: 60px 40px;
    text-align: center;
    margin: 60px 0;
    border: 1px solid var(--border);
}

.cta-section h2 {
    font-size: 28px;
    margin-bottom: 16px;
}

.cta-section p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}



/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 60px 20px;
    }

    .container {
        padding: 40px 20px;
    }

    .content-section,
    .how-it-works,
    .how-works,
    .tech-section {
        padding: 24px;
    }

    .steps {
        flex-direction: column;
    }

    .step::after {
        display: none;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .comparison-table {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Theme Variations */
/* Green theme for English Speaking Practice */
.theme-green {
    --accent: #30d158;
    --accent-glow: rgba(48, 209, 88, 0.3);
}

/* Red theme for Anonymous Voice Call */
.theme-red {
    --accent: #ff453a;
    --accent-glow: rgba(255, 69, 58, 0.3);
}

/* Purple theme for Random Voice Call */
.theme-purple {
    --accent: #bf5af2;
    --accent-glow: rgba(191, 90, 242, 0.3);
}