:root {
    --color-bg: #ffffff;
    --color-bg-elevated: #ffffff;
    --color-surface: #e5e5ea;
    --color-border: #e5e5ea;
    --color-text: #1c1c1e;
    --color-text-secondary: #6e6e73;
    --color-accent: #007aff;
    --color-accent-hover: #0056b3;
    --color-accent-glow: rgba(0, 122, 255, 0.1);
    --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 52px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    max-width: 550px;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.app-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.app-store-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--color-text);
    color: #ffffff;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.app-store-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
}

.app-screenshot {
    max-width: 340px;
    width: 100%;
    height: auto;
    border-radius: 12px;
    filter: drop-shadow(0 10px 40px rgba(0, 0, 0, 0.12));
}

/* Features Section */
.features {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 4rem;
    letter-spacing: -0.02em;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
    border-color: var(--color-accent);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

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

/* Legal Pages */
.legal-page {
    padding: 8rem 2rem 4rem;
    max-width: 800px;
    margin: 0 auto;
}

.legal-container h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.last-updated {
    color: var(--color-text-secondary);
    margin-bottom: 3rem;
}

.legal-content section {
    margin-bottom: 2.5rem;
}

.legal-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-accent);
}

.legal-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.legal-content p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.legal-content ul,
.legal-content ol {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

.legal-content li {
    margin-bottom: 0.5rem;
}

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

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

/* Support Page */
.support-page {
    padding: 8rem 2rem 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.support-container h1 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

.support-intro {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    margin-bottom: 4rem;
}

.support-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 5rem;
}

.support-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: border-color 0.3s ease;
}

.support-card:hover {
    border-color: var(--color-accent);
}

.support-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.support-card h2 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.support-card p {
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.support-btn {
    display: inline-block;
    background: var(--color-accent);
    color: #ffffff;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background 0.2s ease;
}

.support-btn:hover {
    background: var(--color-accent-hover);
}

/* FAQ Section */
.faq-section {
    max-width: 700px;
    margin: 0 auto;
}

.faq-section h2 {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: 2rem;
}

.faq-item {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.faq-item h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.faq-item p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 3rem 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-logo {
    height: 40px;
    width: auto;
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

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

/* Responsive */
@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 6rem;
    }

    .hero-visual {
        order: -1;
    }

    .app-screenshot {
        max-width: 280px;
    }

    .app-buttons {
        justify-content: center;
    }
}

@media (max-width: 600px) {
    .nav-container {
        padding: 1rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero {
        padding: 5rem 1rem 2rem;
    }

    .legal-page,
    .support-page {
        padding: 6rem 1rem 2rem;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}