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

:root {
    --primary-color: #FF9500;
    --primary-dark: #E68500;
    --text-dark: #1D1D1F;
    --text-gray: #6E6E73;
    --bg-light: #F5F5F7;
    --bg-white: #FFFFFF;
    --border-color: #D2D2D7;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.8);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 700;
    font-size: 20px;
}

.logo-icon {
    font-size: 24px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #FFF6E7 0%, #FFFFFF 100%);
    padding: 80px 0;
    text-align: center;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.5;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--primary-color);
    color: white;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(255, 149, 0, 0.3);
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(255, 149, 0, 0.4);
}

.cta-button.large {
    padding: 20px 40px;
    font-size: 20px;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--bg-white);
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.feature-description {
    color: var(--text-gray);
    line-height: 1.6;
}

/* Screenshots Section */
.screenshots {
    padding: 100px 0;
    background: var(--bg-light);
}

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

.screenshot-item {
    text-align: center;
}

.screenshot-placeholder {
    background: var(--bg-white);
    border: 2px dashed var(--border-color);
    border-radius: 20px;
    padding: 60px 20px;
    margin-bottom: 16px;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
}

.screenshot-placeholder p {
    font-size: 18px;
    text-align: center;
}

.screenshot-placeholder small {
    display: block;
    margin-top: 8px;
    font-size: 14px;
    opacity: 0.7;
}

.screenshot-caption {
    font-weight: 500;
    color: var(--text-dark);
    font-size: 16px;
}

.screenshots-note {
    text-align: center;
    color: var(--text-gray);
    font-size: 14px;
    padding: 20px;
    background: var(--bg-white);
    border-radius: 12px;
    max-width: 600px;
    margin: 0 auto;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    text-align: center;
    color: white;
}

.cta-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.cta-section .cta-button {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.cta-section .cta-button:hover {
    background: var(--bg-light);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    display: block;
    margin-bottom: 8px;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* About Page */
.about-page {
    padding: 80px 0;
    max-width: 800px;
    margin: 0 auto;
}

.about-header {
    text-align: center;
    margin-bottom: 60px;
}

.about-header h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.about-header p {
    font-size: 20px;
    color: var(--text-gray);
}

.about-content {
    background: var(--bg-light);
    padding: 60px;
    border-radius: 20px;
    line-height: 1.8;
}

.about-content h2 {
    font-size: 28px;
    font-weight: 600;
    margin: 40px 0 20px;
    color: var(--text-dark);
}

.about-content h2:first-child {
    margin-top: 0;
}

.about-content p {
    margin-bottom: 20px;
    color: var(--text-gray);
    font-size: 16px;
}

.about-content a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.about-content a:hover {
    text-decoration: underline;
}

/* Privacy Page */
.privacy-page {
    padding: 80px 0;
    max-width: 900px;
    margin: 0 auto;
}

.privacy-header {
    text-align: center;
    margin-bottom: 60px;
}

.privacy-header h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.privacy-content {
    background: var(--bg-white);
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    line-height: 1.8;
}

.privacy-content h2 {
    font-size: 24px;
    font-weight: 600;
    margin: 40px 0 20px;
    color: var(--text-dark);
}

.privacy-content h2:first-child {
    margin-top: 0;
}

.privacy-content p {
    margin-bottom: 16px;
    color: var(--text-gray);
    font-size: 16px;
}

.privacy-content ul {
    margin: 20px 0;
    padding-left: 30px;
}

.privacy-content li {
    margin-bottom: 12px;
    color: var(--text-gray);
    font-size: 16px;
}

.privacy-content strong {
    color: var(--text-dark);
}

.last-updated {
    color: var(--text-gray);
    font-size: 14px;
    font-style: italic;
    margin-bottom: 30px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .nav-links {
        gap: 20px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .screenshots-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .about-content,
    .privacy-content {
        padding: 40px 30px;
    }
}