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

:root {
    --color-bg: #0a0a0f;
    --color-surface: #141420;
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-border: #1e293b;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

a {
    color: var(--color-primary-light);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Nav */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

nav {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo:hover {
    text-decoration: none;
}

.logo-icon {
    font-size: 1.4rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

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

.nav-links a:hover {
    color: var(--color-text);
    text-decoration: none;
}

/* Hero */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 1.5rem 4rem;
}

.hero-content {
    max-width: 640px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--color-text);
    color: var(--color-bg);
    padding: 0.9rem 2rem;
    border-radius: 12px;
    font-size: 1.05rem;
    font-weight: 600;
    transition: transform 0.15s, box-shadow 0.15s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.25);
    text-decoration: none;
}

/* How It Works */
.how-it-works {
    padding: 5rem 1.5rem;
    text-align: center;
}

.how-it-works h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 3rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
}

.step-number {
    position: absolute;
    top: -12px;
    left: 20px;
    background: var(--color-primary);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
}

.step-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.step h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

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

/* Features */
.features {
    padding: 5rem 1.5rem;
    text-align: center;
}

.features h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 3rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.feature {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 2rem;
    text-align: left;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.feature h3 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.feature p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* Footer */
footer {
    border-top: 1px solid var(--color-border);
    padding: 3rem 1.5rem;
    text-align: center;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-brand {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.footer-copy {
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
}

.footer-attribution {
    color: var(--color-text-secondary);
    font-size: 0.75rem;
}

.footer-attribution a {
    color: var(--color-text-secondary);
    text-decoration: underline;
}

/* Legal Pages */
.legal-page {
    max-width: 700px;
    margin: 0 auto;
    padding: 8rem 1.5rem 4rem;
}

.legal-page h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.legal-page .last-updated {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.legal-page h2 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.legal-page p,
.legal-page li {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.legal-page ul {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

/* Support Page */
.support-page {
    max-width: 600px;
    margin: 0 auto;
    padding: 8rem 1.5rem 4rem;
    text-align: center;
}

.support-page h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.support-page p {
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.support-email {
    display: inline-block;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    color: var(--color-primary-light);
}

/* Responsive */
@media (max-width: 640px) {
    .nav-links {
        gap: 1rem;
    }

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

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