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

:root {
    --bg: #000;
    --surface: #111;
    --surface-2: #1a1a1a;
    --text: #f5f5f7;
    --text-secondary: #86868b;
    --accent: #007AFF;
    --radius: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Nav */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-logo {
    font-size: 1.2em;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-right {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav-right a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9em;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-download {
    background: var(--accent) !important;
    color: white !important;
    padding: 8px 18px;
    border-radius: 20px;
    font-weight: 600 !important;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 32px 80px;
    gap: 60px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    max-width: 500px;
}

.hero-content h1 {
    font-size: 3.8em;
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.04em;
}

.hero-content p {
    font-size: 1.15em;
    color: var(--text-secondary);
    margin-top: 20px;
    line-height: 1.6;
}

.btn-primary {
    display: inline-block;
    margin-top: 32px;
    padding: 16px 32px;
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 14px;
    font-size: 1em;
    font-weight: 600;
    transition: opacity 0.2s;
}

.btn-primary:hover { opacity: 0.85; }

.hero-note {
    display: block;
    margin-top: 12px;
    font-size: 0.82em;
    color: var(--text-secondary);
}

.hero-phones {
    flex: 0 0 auto;
    position: relative;
    width: 380px;
    height: 620px;
}

/* Phone mockup */
.phone-frame {
    width: 270px;
    height: 586px;
    background: #000;
    border-radius: 40px;
    border: 5px solid #333;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.phone-frame img {
    width: 100%;
    height: 100%;
    object-fit: fill;
}

.phone-frame.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
}

.phone-frame.placeholder::after {
    content: 'Screenshot';
    color: var(--text-secondary);
    font-size: 0.85em;
}

.hero-phones .phone-frame:first-child {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 2;
}

.hero-phones .phone-behind {
    position: absolute;
    left: 100px;
    top: 40px;
    z-index: 1;
    opacity: 0.6;
    transform: scale(0.95);
}

/* Features */
.features {
    max-width: 1100px;
    margin: 0 auto;
    padding: 80px 32px;
}

.feature-row {
    display: flex;
    align-items: center;
    gap: 80px;
    margin-bottom: 120px;
}

.feature-row.reverse {
    flex-direction: row-reverse;
}

.feature-text {
    flex: 1;
}

.feature-label {
    font-size: 0.8em;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

.feature-text h2 {
    font-size: 2.4em;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.feature-text p {
    font-size: 1.05em;
    color: var(--text-secondary);
    margin-top: 16px;
    line-height: 1.6;
}

.feature-visual {
    flex: 0 0 auto;
}

.feature-visual .phone-frame {
    width: 270px;
    height: 586px;
}

/* Carriers */
.carriers {
    text-align: center;
    padding: 80px 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.carriers h2 {
    font-size: 2em;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.carriers p {
    color: var(--text-secondary);
    margin-top: 16px;
    font-size: 0.95em;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Grid features */
.grid-features {
    max-width: 1100px;
    margin: 0 auto;
    padding: 80px 32px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.grid-feature {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 32px 28px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.grid-feature h3 {
    font-size: 1.05em;
    font-weight: 650;
    margin-bottom: 6px;
}

.grid-feature p {
    font-size: 0.9em;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Pricing */
.pricing {
    text-align: center;
    padding: 100px 32px;
}

.pricing h2 {
    font-size: 2.2em;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.pricing-sub {
    color: var(--text-secondary);
    margin-top: 8px;
    margin-bottom: 40px;
}

.pricing-options {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.plan {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 36px 48px;
    min-width: 200px;
    position: relative;
}

.plan-featured {
    border-color: var(--accent);
    background: rgba(0, 122, 255, 0.06);
}

.plan-badge {
    position: absolute;
    top: -13px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: white;
    padding: 5px 16px;
    border-radius: 20px;
    font-size: 0.75em;
    font-weight: 600;
    white-space: nowrap;
}

.plan-name {
    font-size: 0.85em;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 500;
    margin-bottom: 8px;
}

.plan-price {
    font-size: 2.4em;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.plan-price span {
    font-size: 0.38em;
    font-weight: 400;
    color: var(--text-secondary);
}

.plan-savings {
    margin-top: 8px;
    font-size: 0.85em;
    color: var(--text-secondary);
}

/* Footer */
footer {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 60px 32px 40px;
    max-width: 1100px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 1.15em;
    font-weight: 700;
    margin-bottom: 6px;
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: 0.9em;
}

.footer-col h4 {
    font-size: 0.8em;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.footer-col a {
    display: block;
    color: var(--text);
    text-decoration: none;
    font-size: 0.9em;
    margin-bottom: 8px;
    transition: color 0.2s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 20px;
}

.footer-bottom p {
    font-size: 0.8em;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 100px;
        min-height: auto;
    }
    .hero-content h1 { font-size: 2.6em; }
    .hero-phones {
        width: 280px;
        height: 480px;
    }
    .hero-phones .phone-frame {
        width: 220px;
        height: 450px;
    }
    .hero-phones .phone-behind {
        left: 60px;
        top: 30px;
    }
    .feature-row,
    .feature-row.reverse {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    .grid-features {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .hero-content h1 { font-size: 2em; }
    .feature-text h2 { font-size: 1.8em; }
    .grid-features {
        grid-template-columns: 1fr;
    }
    nav { padding: 14px 20px; }
    .hero, .features, .carriers, .grid-features, .pricing {
        padding-left: 20px;
        padding-right: 20px;
    }
}