/* CSS Variables */
:root {
    --primary: #FF9500;
    --primary-dark: #E68600;
    --dark: #1a1a1a;
    --darker: #111111;
    --gray-dark: #333333;
    --gray: #666666;
    --gray-light: #A5A5A5;
    --white: #ffffff;
    --background: #0a0a0a;
    --card-bg: #1a1a1a;
    --border: #2a2a2a;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-dark);
}

h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 600;
}

ul {
    list-style-position: inside;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--white);
    font-weight: 600;
    font-size: 1.25rem;
}

.logo:hover {
    color: var(--white);
}

.logo-icon {
    font-size: 1.5rem;
}

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

.nav-links a {
    color: var(--gray-light);
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--gray-dark);
    color: var(--white);
}

.btn-secondary:hover {
    background: var(--gray);
    color: var(--white);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
}

.apple-icon {
    width: 20px;
    height: 20px;
}

/* Hero Section */
.hero {
    padding: 140px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 24px;
}

.highlight {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-light);
    margin-bottom: 32px;
    max-width: 500px;
}

/* Phone Mockup */
.phone-mockup {
    background: var(--dark);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    max-width: 320px;
    margin: 0 auto;
}

.phone-screen {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border-radius: 32px;
    padding: 20px;
    aspect-ratio: 9/16;
    display: flex;
    flex-direction: column;
}

.calc-display {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    text-align: right;
    padding: 20px;
    color: #00ff88;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    margin-bottom: 20px;
}

.calc-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    flex: 1;
}

.calc-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: 500;
    aspect-ratio: 1;
}

.calc-btn.dark {
    background: var(--gray-dark);
    color: var(--white);
}

.calc-btn.gray {
    background: var(--gray-light);
    color: var(--dark);
}

.calc-btn.orange {
    background: var(--primary);
    color: var(--white);
}

.calc-btn.zero {
    grid-column: span 2;
    border-radius: 40px;
    aspect-ratio: auto;
}

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

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 32px;
    border: 1px solid var(--border);
    transition: transform 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--gray-light);
    font-size: 0.95rem;
}

/* CTA Section */
.cta {
    padding: 100px 0;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.cta p {
    font-size: 1.25rem;
    color: var(--gray-light);
    margin-bottom: 32px;
}

/* Page Content (Privacy, Support) */
.page-content {
    padding: 120px 0 80px;
    min-height: calc(100vh - 200px);
}

.content-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 48px;
    border: 1px solid var(--border);
    max-width: 800px;
    margin: 0 auto;
}

.content-card h1 {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.last-updated,
.intro {
    color: var(--gray-light);
    margin-bottom: 32px;
}

.content-card section {
    margin-bottom: 32px;
}

.content-card h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--primary);
}

.content-card h3 {
    font-size: 1.125rem;
    margin: 16px 0 8px;
}

.content-card p {
    margin-bottom: 12px;
}

.content-card ul {
    margin-bottom: 16px;
    padding-left: 8px;
}

.content-card li {
    margin-bottom: 8px;
    color: var(--gray-light);
}

.highlight-box {
    background: rgba(255, 149, 0, 0.1);
    border-left: 4px solid var(--primary);
    padding: 20px;
    border-radius: 0 12px 12px 0;
    margin: 24px 0;
}

.highlight-box p {
    margin-bottom: 0;
}

.privacy-summary {
    margin-top: 40px;
}

/* FAQ */
.faq-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
}

.faq-item h3 {
    color: var(--white);
    margin-bottom: 8px;
}

.faq-item p {
    color: var(--gray-light);
    margin-bottom: 0;
}

/* Contact Cards */
.contact-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 24px;
}

.contact-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.contact-card h3 {
    margin-bottom: 8px;
}

.contact-card p {
    color: var(--gray-light);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.contact-card .btn {
    width: 100%;
    font-size: 0.85rem;
}

/* Info Table */
.info-table {
    width: 100%;
    border-collapse: collapse;
}

.info-table td {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.info-table td:first-child {
    color: var(--gray-light);
}

.info-table td:last-child {
    text-align: right;
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--darker);
    padding: 40px 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--gray-light);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--gray);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

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

    .contact-options {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .nav-links {
        gap: 16px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

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

    .content-card {
        padding: 24px;
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .phone-mockup {
        max-width: 260px;
    }

    .calc-display {
        font-size: 1.75rem;
    }

    .calc-btn {
        font-size: 1rem;
    }
}