/* ===== CSS Variables ===== */
:root {
    --color-bg: #0f0f0f;
    --color-bg-secondary: #1a1a1a;
    --color-text: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-accent: #d4cfc3;
    --color-accent-dark: #b8b3a7;
    --color-card: #1f1f1f;
    --color-border: #2a2a2a;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --max-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

img {
    max-width: 100%;
    height: auto;
}

/* ===== Layout ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-text);
}

.logo-img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ===== Hero Section ===== */
.hero {
    padding: calc(80px + var(--spacing-2xl)) 0 var(--spacing-2xl);
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.highlight {
    background: linear-gradient(135deg, var(--color-accent) 0%, #e8e4d9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.7;
}

.hero-cta {
    margin-bottom: var(--spacing-xl);
}

.hero-screenshot {
    margin-top: var(--spacing-xl);
}

.hero-image {
    max-width: 100%;
    max-height: 700px;
    border-radius: var(--border-radius-lg);
}

/* ===== Sections ===== */
section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

/* ===== Features Section ===== */
.features {
    background: var(--color-bg-secondary);
}

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

.feature-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-bg);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== How It Works Section ===== */
.how-it-works {
    background: var(--color-bg);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.step {
    text-align: center;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--color-accent);
    color: var(--color-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

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

/* ===== Privacy Highlight Section ===== */
.privacy-highlight {
    background: var(--color-bg-secondary);
}

.privacy-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    max-width: 700px;
    margin: 0 auto;
}

.privacy-icon {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg);
}

.privacy-text h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.privacy-text p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

.link {
    font-weight: 600;
    color: var(--color-accent);
}

/* ===== CTA Section ===== */
.cta {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.cta h2 {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.cta p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

/* ===== Footer ===== */
.footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
}

.footer-logo {
    width: 28px;
    height: 28px;
    border-radius: 6px;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

/* ===== Legal Pages ===== */
.legal-page {
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-2xl);
}

.legal-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.legal-header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.last-updated {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content section {
    padding: 0;
    margin-bottom: var(--spacing-xl);
}

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

.legal-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.legal-content p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.legal-content ul {
    color: var(--color-text-secondary);
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.legal-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.legal-content a {
    color: var(--color-accent);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding-top: calc(60px + var(--spacing-xl));
    }

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

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* ===== Utility Classes ===== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }