/* Franz Fahrenheit — Marketing Landing Page Styles */

*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

/* Shared: logo + header base */
.landing .logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.landing .app-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
}

.landing .app-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Shared: footer */
.landing .footer {
    margin-top: 48px;
    padding: 32px 0;
}

.landing .footer-content {
    text-align: center;
}

.landing .footer-content p {
    font-size: 13px;
    color: var(--ff-text-muted);
    margin: 0;
    line-height: 1.6;
}

.landing .footer-content a {
    color: var(--ff-text-muted);
    text-decoration: none;
    transition: color 0.15s;
}

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

:root {
    --ff-bg: #fafafa;
    --ff-surface: #ffffff;
    --ff-text: #0a0a0a;
    --ff-text-muted: #5f5f66;
    --ff-border: rgba(10, 10, 10, 0.08);
    --ff-accent: #007aff;
    --ff-accent-hover: #0062cc;
    --ff-radius-lg: 28px;
    --ff-radius-md: 16px;
    --ff-radius-sm: 10px;
    --ff-hero-gradient: linear-gradient(180deg, #f6f7fb 0%, #fafafa 70%);
    --ff-shadow-lg: 0 30px 60px -20px rgba(15, 23, 42, 0.15);
}

body.landing {
    background: var(--ff-bg);
    color: var(--ff-text);
    font-family: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
}

.landing .container {
    max-width: 1080px;
    margin-inline: auto;
    padding: 24px;
}

/* Header */
.landing .header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0 32px;
    margin: 0;
}

.landing .header .logo-section {
    text-decoration: none;
    color: inherit;
}

.landing .app-title {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--ff-text);
}

.landing .nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
}

.landing .nav-link {
    color: var(--ff-text-muted);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.15s;
}

.landing .nav-link:hover { color: var(--ff-text); }

.landing .app-store-button img { height: 40px; width: auto; display: block; }

/* Hero */
.hero {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 80px;
    align-items: center;
    justify-content: center;
    padding: 48px 0 96px;
    margin-bottom: 48px;
}

.hero-content {
    max-width: 520px;
    justify-self: start;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--ff-text-muted);
    background: var(--ff-surface);
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid var(--ff-border);
    margin-bottom: 24px;
}

.hero-eyebrow .star { color: #f59e0b; }

.hero h1 {
    font-size: clamp(36px, 4.5vw, 56px);
    line-height: 1.05;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin: 0 0 20px;
    color: var(--ff-text);
}

.hero h1 .accent {
    background: linear-gradient(135deg, #007aff 0%, #ff9500 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subcopy {
    font-size: 18px;
    line-height: 1.55;
    color: var(--ff-text-muted);
    margin-bottom: 32px;
}

.hero-ctas {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-ctas .app-store-button img { height: 52px; }

.secondary-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--ff-text);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    padding: 14px 20px;
    border-radius: 12px;
    border: 1px solid var(--ff-border);
    background: var(--ff-surface);
    transition: all 0.15s ease;
}

.secondary-cta:hover {
    border-color: rgba(10, 10, 10, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px -4px rgba(15, 23, 42, 0.1);
}

.secondary-cta .arrow { transition: transform 0.2s; }
.secondary-cta:hover .arrow { transform: translateX(3px); }

/* Screenshot carousel */
.hero-carousel {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.carousel-viewport {
    width: 300px;
    aspect-ratio: 1242 / 2688;
    overflow: hidden;
    position: relative;
    border-radius: 28px;
    box-shadow:
        0 1px 2px rgba(15, 23, 42, 0.06),
        0 8px 20px -8px rgba(15, 23, 42, 0.18),
        0 30px 60px -30px rgba(15, 23, 42, 0.35);
}

.carousel-track {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.carousel-slide {
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    user-select: none;
    -webkit-user-drag: none;
}

.carousel-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(10, 10, 10, 0.18);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: all 0.25s ease;
}

.dot.active {
    background: var(--ff-text);
    width: 24px;
    border-radius: 4px;
}

.dot:hover:not(.active) { background: rgba(10, 10, 10, 0.35); }

/* Sections */
.section {
    padding: 48px 0;
}

.section-eyebrow {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ff-accent);
    margin-bottom: 12px;
}

.section h2 {
    font-size: clamp(28px, 3.2vw, 40px);
    line-height: 1.15;
    letter-spacing: -0.02em;
    font-weight: 700;
    margin: 0 0 16px;
    color: var(--ff-text);
    max-width: 720px;
}

.section-lede {
    font-size: 18px;
    line-height: 1.55;
    color: var(--ff-text-muted);
    max-width: 640px;
    margin-bottom: 48px;
}

/* Features grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--ff-surface);
    border: 1px solid var(--ff-border);
    border-radius: var(--ff-radius-md);
    padding: 28px;
    transition: border-color 0.2s, transform 0.2s;
}

.feature-card {
    position: relative;
}

.feature-card:hover {
    border-color: rgba(10, 10, 10, 0.14);
    transform: translateY(-2px);
}

.feature-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--ff-accent);
    background: rgba(0, 122, 255, 0.1);
    padding: 4px 10px;
    border-radius: 999px;
}

.feature-icon {
    font-size: 28px;
    margin-bottom: 16px;
    display: block;
}

.feature-card h3 {
    font-size: 17px;
    font-weight: 600;
    margin: 0 0 8px;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 15px;
    line-height: 1.55;
    color: var(--ff-text-muted);
    margin: 0;
}

/* FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 800px;
}

.faq-item {
    border: 1px solid var(--ff-border);
    border-radius: var(--ff-radius-md);
    background: var(--ff-surface);
    overflow: hidden;
}

.faq-item summary {
    list-style: none;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
    content: "+";
    font-size: 22px;
    color: var(--ff-text-muted);
    font-weight: 300;
    transition: transform 0.2s;
}

.faq-item[open] summary::after { transform: rotate(45deg); }

.faq-body {
    padding: 0 24px 24px;
    font-size: 15px;
    line-height: 1.6;
    color: var(--ff-text-muted);
}

.faq-body a { color: var(--ff-accent); text-decoration: none; }
.faq-body a:hover { text-decoration: underline; }

/* Footer CTA */
.footer-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 48px 0 32px;
    border-top: 1px solid var(--ff-border);
    margin-top: 48px;
}

.footer-cta-text {
    font-size: 15px;
    color: var(--ff-text-muted);
    margin: 0;
    text-align: center;
}

.footer-cta .app-store-button img { height: 44px; }

/* Responsive */
@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 48px;
        padding: 24px 0 56px;
        text-align: center;
        margin-bottom: 32px;
    }
    .hero-content { margin: 0 auto; justify-self: center; }
    .hero-ctas { justify-content: center; }
    .hero-carousel { order: 2; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .landing .container { padding: 16px; }
    .hero { padding: 16px 0 40px; }
    .hero h1 { font-size: 36px; }
    .hero-subcopy { font-size: 16px; }
    .carousel-viewport { width: 260px; }
    .features-grid { grid-template-columns: 1fr; }
    .section { padding: 32px 0; }
    .landing .nav-links { gap: 12px; }
    .landing .nav-link.about-link { display: none; }
}