/* ═══════════════════════════════════════════════════════════════
   Maushwave Landing Page Styles
   Phase 4 Task 4.3: Influencer Landing Pages
   
   Design: Mobile-first, dark theme, < 100 KB total page weight
   No JavaScript required (progressive enhancement only)
   ═══════════════════════════════════════════════════════════════ */

:root {
    --primary: #7B68EE;
    --accent: #7B68EE;
    --bg: #0D0D1A;
    --surface: #13131F;
    --surface-card: #1C1C2E;
    --text: #FFFFFF;
    --text-muted: #9999BB;
    --radius: 12px;
    --max-width: 640px;
    --nav-height: 56px;
}

/* ── Site Navigation ───────────────────────────────────────── */

.site-nav {
    width: 100%;
    background: var(--bg);
    border-bottom: 1px solid var(--surface-card);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.site-nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.25rem;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    flex-shrink: 0;
}

.nav-logo img {
    height: 32px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.15s;
}

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

.nav-links a.btn-nav {
    background: var(--primary);
    color: #fff;
    padding: 0.35rem 0.9rem;
    border-radius: 8px;
    font-weight: 600;
    transition: opacity 0.15s;
}

.nav-links a.btn-nav:hover {
    opacity: 0.85;
    color: #fff;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ── Hero Section ───────────────────────────────────────────── */

.hero {
    width: 100%;
    max-width: var(--max-width);
    padding: 3rem 1.5rem 2rem;
    text-align: center;
}

.hero-logo {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.hero h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.hero .tagline {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.hero .endorsement {
    font-style: italic;
    color: var(--accent);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    padding: 0 1rem;
}

.hero .endorser {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-style: normal;
}

/* ── CTA Button ────────────────────────────────────────────── */

.cta {
    display: inline-block;
    background: var(--primary);
    color: var(--text);
    text-decoration: none;
    padding: 1rem 2.5rem;
    border-radius: var(--radius);
    font-size: 1.1rem;
    font-weight: 600;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    box-shadow: 0 4px 16px rgba(204, 68, 0, 0.3);
}

.cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(204, 68, 0, 0.4);
}

.cta:active {
    transform: translateY(0);
}

.cta-note {
    display: block;
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ── Features Grid ─────────────────────────────────────────── */

.features {
    width: 100%;
    max-width: var(--max-width);
    padding: 2rem 1.5rem;
}

.features h2 {
    font-size: 1.4rem;
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--text);
}

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

.feature-card {
    background: var(--surface-card);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
}

.feature-card .icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.feature-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.feature-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* ── Social Proof ──────────────────────────────────────────── */

.social-proof {
    width: 100%;
    max-width: var(--max-width);
    padding: 2rem 1.5rem;
    text-align: center;
}

.social-proof h2 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat .number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    display: block;
}

.stat .label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ── How It Works ──────────────────────────────────────────── */

.how-it-works {
    width: 100%;
    max-width: var(--max-width);
    padding: 2rem 1.5rem;
}

.how-it-works h2 {
    font-size: 1.4rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
}

.step-number {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.step-content h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.step-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ── Footer ────────────────────────────────────────────────── */

.footer {
    width: 100%;
    max-width: var(--max-width);
    padding: 2rem 1.5rem;
    text-align: center;
    border-top: 1px solid var(--surface-card);
    margin-top: auto;
}

.footer p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer a {
    color: var(--text-muted);
    text-decoration: none;
}

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

/* ── Responsive ────────────────────────────────────────────── */

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }

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

    .stats {
        gap: 1.5rem;
    }
}

@media (min-width: 768px) {
    .hero {
        padding-top: 5rem;
    }

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

    .feature-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}