/* BicycleSeatAds — main styles (no Tailwind, vanilla CSS) */

:root {
  --ink: oklch(0.12 0 0);
  --concrete: oklch(0.965 0.003 100);
  --safety: oklch(0.93 0.22 122);
  --transit: oklch(0.69 0.22 41);
  --lane: oklch(0.72 0.18 156);
  --rain: oklch(0.58 0.18 263);

  --bg: var(--concrete);
  --fg: var(--ink);
  --muted: oklch(0.45 0.005 100);
  --border: oklch(0.88 0.005 100);
  --card: #fff;

  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-sans: "Inter", ui-sans-serif, system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; max-width: 100%; overflow-x: hidden; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -0.02em; font-weight: 600; margin: 0; }

/* Layout */
.container-x { width: 100%; max-width: 1400px; margin: 0 auto; padding: 0 20px; }
@media (min-width: 640px) { .container-x { padding: 0 24px; } }
@media (min-width: 768px) { .container-x { padding: 0 40px; } }

.section { padding: 96px 0; }
@media (min-width: 768px) { .section { padding: 120px 0; } }

/* Typography utilities */
.display-xl { font-family: var(--font-display); font-weight: 600; font-size: clamp(2.125rem, 8.5vw, 6.5rem); line-height: 0.98; letter-spacing: -0.035em; overflow-wrap: break-word; }
.display-lg { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.75rem, 6vw, 4rem); line-height: 1.02; letter-spacing: -0.03em; overflow-wrap: break-word; }
.eyebrow { font-family: var(--font-display); font-size: 0.75rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.18em; margin: 0 0 1rem; display: inline-block; }
.eyebrow.accent { color: var(--safety); }
.muted { color: var(--muted); }
.small { font-size: 0.8125rem; }
.lede { font-size: 1.125rem; color: var(--muted); max-width: 36ch; }
.center { text-align: center; }
.mt-md { margin-top: 1rem; }
.mt-lg { margin-top: 2rem; }
.mt-xl { margin-top: 3rem; }
.w-full { width: 100%; }

/* Surface */
.surface-ink { background: var(--ink); color: #fff; }
.surface-ink .muted { color: rgba(255,255,255,0.6); }
.accent { color: var(--safety); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(245,245,243,0.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; font-size: 1.05rem; }
.brand__mark { color: var(--safety); font-size: 1.4rem; line-height: 0; }
.brand--light { color: #fff; }
.site-nav { display: flex; align-items: center; gap: 1.5rem; }
.nav-list { display: flex; gap: 1.5rem; list-style: none; margin: 0; padding: 0; font-size: 0.875rem; }
.nav-list a { font-weight: 500; }
.nav-list a:hover { color: var(--transit); }
.nav-toggle { display: none; background: none; border: 0; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); display: block; }
@media (max-width: 880px) {
  .site-nav { position: fixed; top: 72px; right: 0; left: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 24px; flex-direction: column; align-items: stretch; gap: 1rem; transform: translateY(-110%); transition: transform .25s ease; }
  .site-nav.is-open { transform: translateY(0); }
  .nav-list { flex-direction: column; gap: 1rem; }
  .nav-toggle { display: flex; }
}

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 0.5rem; justify-content: center; font-family: var(--font-display); font-weight: 600; letter-spacing: 0.01em; padding: 0.75rem 1.25rem; border: 1px solid transparent; cursor: pointer; transition: transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease; font-size: 0.875rem; line-height: 1; text-align: center; background: none; }
.btn:hover { transform: translateY(-1px); }
.btn--sm { padding: 0.5rem 0.85rem; font-size: 0.8125rem; }
.btn--lg { padding: 0.95rem 1.5rem; font-size: 0.95rem; }
.btn--xl { padding: 1.1rem 1.75rem; font-size: 1rem; }
.btn--ink { background: var(--ink); color: #fff; }
.btn--ink:hover { background: #000; }
.btn--accent { background: var(--safety); color: var(--ink); }
.btn--accent:hover { filter: brightness(0.95); }
.btn--outline { border-color: var(--ink); color: var(--ink); }
.btn--outline:hover { background: var(--ink); color: #fff; }
.btn--outline-light { border-color: rgba(255,255,255,0.6); color: #fff; }
.btn--outline-light:hover { background: #fff; color: var(--ink); }
.btn--ghost { color: #fff; }
.btn--ghost:hover { background: rgba(255,255,255,0.1); }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 160px 0 96px; }
.hero__bg { position: absolute; inset: 0; background: radial-gradient(circle at 70% 30%, rgba(214,255,0,0.15), transparent 60%), linear-gradient(180deg, #1a1a1a, var(--ink)); }
.hero__inner { position: relative; z-index: 2; }
.hero__lede { margin-top: 2rem; max-width: 36rem; color: rgba(255,255,255,0.8); font-size: 1.125rem; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2.5rem; }
.hero__stats { margin-top: 4rem; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.15); display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; max-width: 56rem; }
@media (min-width: 768px) { .hero__stats { grid-template-columns: repeat(4, 1fr); } }
.stat-k { font-family: var(--font-display); font-size: clamp(1.5rem, 3vw, 2.5rem); color: var(--safety); }
.stat-v { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.18em; color: rgba(255,255,255,0.6); margin-top: 0.4rem; }

.page-hero { padding: 140px 0 80px; }
.page-hero .hero__lede { margin-top: 1.5rem; }

/* Grids */
.grid-12 { display: grid; grid-template-columns: repeat(12, 1fr); gap: 2rem; }
@media (max-width: 880px) { .grid-12 { grid-template-columns: 1fr; } }
.col-4 { grid-column: span 4; } .col-5 { grid-column: span 5; } .col-7 { grid-column: span 7; } .col-8 { grid-column: span 8; }
@media (max-width: 880px) { .col-4, .col-5, .col-7, .col-8 { grid-column: 1 / -1; } }
.gap-lg { gap: 3rem; }
.align-center { align-items: center; }

.cards-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--border); }
@media (max-width: 640px) { .cards-2 { grid-template-columns: 1fr; } }
.card-flat { background: var(--bg); padding: 2rem; }
.card-flat h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.card-flat p { color: var(--muted); margin: 0; font-size: 0.95rem; }

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 880px) { .cards-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cards-3 { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--border); padding: 2rem; transition: border-color .2s ease, transform .35s cubic-bezier(.2,.8,.2,1); }
.card:hover { border-color: var(--ink); }
.hover-lift:hover { transform: translateY(-4px); }
.card h3 { font-size: 1.5rem; margin: 0 0 0.5rem; }
.card p { color: var(--muted); margin: 0; }
.card__foot { margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--border); display: flex; justify-content: space-between; font-size: 0.75rem; }
.card__inquire { font-family: var(--font-display); text-transform: uppercase; letter-spacing: 0.12em; }

.section__head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; margin-bottom: 3.5rem; }
.section__head > div { max-width: 36rem; }

/* Steps */
.steps-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: rgba(255,255,255,0.1); }
@media (max-width: 1024px) { .steps-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .steps-grid { grid-template-columns: 1fr; } }
.step { background: var(--ink); padding: 2rem; transition: transform .35s ease; }
.step:hover { transform: translateY(-4px); }
.step__n { font-family: var(--font-display); font-size: 3rem; color: var(--safety); }
.step h3 { margin: 1.5rem 0 0.75rem; font-size: 1.25rem; }
.step p { color: rgba(255,255,255,0.6); margin: 0; font-size: 0.9rem; }

/* Long steps (how-it-works page) */
.long-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 3rem; max-width: 60rem; }
.long-steps li { display: grid; grid-template-columns: 6rem 1fr; gap: 2rem; align-items: start; padding-bottom: 3rem; border-bottom: 1px solid var(--border); }
.long-steps li:last-child { border-bottom: 0; }
.long-steps__n { font-family: var(--font-display); font-size: 2.5rem; color: var(--ink); }
.long-steps h2 { font-size: 1.75rem; margin-bottom: 0.5rem; }
.long-steps p { color: var(--muted); margin: 0; }
@media (max-width: 600px) { .long-steps li { grid-template-columns: 1fr; gap: 0.5rem; } }

/* Accent section */
.accent-section { background: var(--safety); color: var(--ink); }
.accent-section .lede { color: rgba(11,11,11,0.8); }
.check-list { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: 0.65rem; font-size: 0.95rem; font-weight: 500; }
.check-list li { display: flex; gap: 0.75rem; }
.check-list li::before { content: ""; flex: 0 0 0.4rem; height: 0.4rem; margin-top: 0.55rem; background: currentColor; border-radius: 999px; }

/* CTA band */
.cta-band__inner { text-align: center; max-width: 50rem; margin: 0 auto; }
.cta-band .hero__ctas { justify-content: center; }

/* Footer */
.site-footer { padding: 80px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 3rem; padding-bottom: 3rem; border-bottom: 1px solid rgba(255,255,255,0.12); }
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr; gap: 2rem; } }
.footer-tag { color: rgba(255,255,255,0.6); margin-top: 1rem; max-width: 28ch; }
.footer-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.6rem; font-size: 0.9rem; }
.footer-list a:hover { color: var(--safety); }
.footer-bottom { padding-top: 2rem; color: rgba(255,255,255,0.5); font-size: 0.8rem; }

/* Pricing */
.pricing-grid { gap: 1.5rem; }
.price-card { background: var(--card); border: 1px solid var(--border); padding: 2.5rem; display: flex; flex-direction: column; gap: 1.25rem; }
.price-card .price { font-family: var(--font-display); font-size: 3rem; line-height: 1; }
.price-card .price span { font-size: 0.95rem; color: var(--muted); margin-left: 0.5rem; font-family: var(--font-sans); }
.price-card .check-list { color: var(--ink); }
.price-card--featured { background: var(--ink); color: #fff; border-color: var(--ink); }
.price-card--featured .muted, .price-card--featured .price span { color: rgba(255,255,255,0.6); }
.price-card--featured .check-list { color: #fff; }

/* Contact */
.contact-form { display: grid; gap: 1rem; max-width: 38rem; }
.contact-form label { display: grid; gap: 0.4rem; font-size: 0.8rem; font-family: var(--font-display); text-transform: uppercase; letter-spacing: 0.14em; color: var(--muted); }
.contact-form input, .contact-form textarea { font: inherit; font-family: var(--font-sans); text-transform: none; letter-spacing: normal; color: var(--ink); padding: 0.85rem 1rem; border: 1px solid var(--border); background: #fff; outline: none; }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--ink); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
.contact-form .hp { position: absolute; left: -10000px; }
.alert { padding: 1rem 1.25rem; margin-bottom: 1.5rem; border: 1px solid; }
.alert--ok { background: oklch(0.95 0.05 156 / 0.4); border-color: var(--lane); }
.alert--err { background: oklch(0.95 0.05 27 / 0.4); border-color: oklch(0.6 0.24 27); }
.contact-aside p { margin: 0.4rem 0; }

/* Mockup builder */
.mockup-layout { align-items: start; }
.mockup-controls { display: flex; flex-direction: column; gap: 2rem; }
.ctrl { display: flex; flex-direction: column; gap: 0.6rem; }
.ctrl-input { width: 100%; padding: 0.85rem 1rem; border: 1px solid var(--border); background: transparent; font: 600 1.05rem var(--font-display); letter-spacing: -0.01em; outline: none; }
.ctrl-input:focus { border-color: var(--ink); }
.seg { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--border); }
.seg button { background: none; border: 0; padding: 0.85rem; cursor: pointer; font: 500 0.72rem var(--font-display); text-transform: uppercase; letter-spacing: 0.16em; }
.seg button.is-active { background: var(--ink); color: #fff; }
.swatches { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.swatches button { width: 36px; height: 36px; border: 2px solid var(--border); cursor: pointer; padding: 0; }
.swatches button.is-active { border-color: var(--ink); }
.color-row { display: flex; align-items: center; gap: 0.75rem; }
.color-row input[type=color] { width: 56px; height: 40px; border: 1px solid var(--border); padding: 2px; background: transparent; cursor: pointer; }
.presets { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.presets button { padding: 0.5rem 0.85rem; border: 1px solid var(--border); cursor: pointer; font: 500 0.7rem var(--font-display); text-transform: uppercase; letter-spacing: 0.12em; }
.slider { display: grid; gap: 0.4rem; }
.slider span { font: 500 0.7rem var(--font-display); text-transform: uppercase; letter-spacing: 0.16em; color: var(--muted); display: flex; justify-content: space-between; }
.slider input[type=range] { width: 100%; accent-color: var(--ink); }
.actions { display: flex; gap: 0.5rem; flex-direction: row; }
.actions .btn { flex: 1; }
.upload-drop { border: 1px dashed var(--border); padding: 2rem; text-align: center; cursor: pointer; background: transparent; display: flex; flex-direction: column; gap: 0.5rem; align-items: center; }
.upload-drop:hover { border-color: var(--ink); }
.upload-drop strong { font-weight: 500; font-size: 0.9rem; }
.upload-drop span { font-size: 0.75rem; color: var(--muted); }
.logo-row { display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem; border: 1px solid var(--border); }
.logo-thumb { width: 56px; height: 56px; background: var(--bg); display: flex; align-items: center; justify-content: center; overflow: hidden; flex: 0 0 auto; }
.logo-thumb img { max-width: 100%; max-height: 100%; }
.logo-meta { flex: 1; min-width: 0; }
.logo-meta p { margin: 0; font-size: 0.875rem; }
.logo-meta span { font-size: 0.75rem; color: var(--muted); }
.logo-row button { background: none; border: 0; cursor: pointer; padding: 0.5rem; font-size: 1.25rem; }

.mockup-stage { position: relative; aspect-ratio: 1 / 1; background: var(--bg); border: 1px solid var(--border); overflow: hidden; }
.mockup-stage svg { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; user-select: none; }
.mockup-stage__label { position: absolute; top: 1rem; left: 1rem; z-index: 2; background: rgba(0,0,0,0.5); color: #fff; backdrop-filter: blur(6px); padding: 0.4rem 0.75rem; font: 500 0.7rem var(--font-display); text-transform: uppercase; letter-spacing: 0.16em; }

[data-show] { display: none; }
[data-show].is-visible { display: flex; }

/* Prose (default page) */
.prose { max-width: 70ch; }
.prose p { margin: 1em 0; color: var(--muted); }
.prose h2 { margin-top: 2em; }

/* Hero photo + sections (added) */
.hero { padding: 200px 0 120px; }
.hero__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.55; z-index: 0; }
.hero__overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.35) 45%, var(--ink) 100%); z-index: 1; }
.hero .hero__bg { z-index: 1; mix-blend-mode: screen; opacity: 0.6; }

.section--product .product-shot { position: relative; aspect-ratio: 4/5; overflow: hidden; background: var(--muted, #eee); }
.section--product .product-shot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.product-shot__tags { position: absolute; left: 1.25rem; right: 1.25rem; bottom: 1.25rem; display: flex; flex-wrap: wrap; gap: 0.5rem; font: 500 0.65rem var(--font-display); letter-spacing: 0.18em; text-transform: uppercase; }
.product-shot__tags span { background: var(--ink); color: #fff; padding: 0.4rem 0.75rem; }
.spec-list { list-style: none; padding: 0; margin: 2rem 0 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.spec-list li { display: flex; gap: 1.5rem; padding: 0.9rem 0; border-bottom: 1px solid var(--border); font-size: 0.95rem; }
.spec-list li:last-child { border-bottom: 0; }
.spec-list li > span:first-child { flex: 0 0 7rem; font: 500 0.7rem var(--font-display); text-transform: uppercase; letter-spacing: 0.18em; color: #666; }

.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 900px) { .cases { grid-template-columns: 1fr; } }
.case__img { aspect-ratio: 4/5; overflow: hidden; background: #eee; }
.case__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; display: block; }
.case:hover .case__img img { transform: scale(1.04); }
.case__meta { margin-top: 1rem; display: flex; gap: 0.5rem; font: 500 0.7rem var(--font-display); text-transform: uppercase; letter-spacing: 0.18em; color: #666; }
.case__title { margin-top: 0.6rem; font-size: 1.25rem; }

/* Hero/photo fixes (override) */
.hero .hero__bg { display: none !important; }
.hero__img { opacity: 0.7 !important; }
.hero__overlay { background: linear-gradient(180deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.25) 50%, var(--ink) 100%) !important; }

.section--product .product-shot { aspect-ratio: auto; min-height: 480px; }
.section--product .product-shot img { position: absolute; inset: 0; }
@media (max-width: 900px) {
  .section--product .product-shot { min-height: 360px; }
}

/* Missing col-6 */
.col-6 { grid-column: span 6; }
@media (max-width: 880px) { .col-6 { grid-column: 1 / -1; } }

/* Scroll reveal — tuned: subtle, fast, tight stagger */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease-out, transform .65s cubic-bezier(.22,.61,.36,1); will-change: opacity, transform; }
.reveal.is-in { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: .05s; }
.reveal-delay-2 { transition-delay: .10s; }
.reveal-delay-3 { transition-delay: .15s; }
.reveal-delay-4 { transition-delay: .20s; }
.reveal-delay-5 { transition-delay: .25s; }
.reveal-zoom { opacity: 0; transform: scale(.985); transition: opacity .7s ease-out, transform .8s cubic-bezier(.22,.61,.36,1); }
.reveal-zoom.is-in { opacity: 1; transform: none; }
/* Auto-stagger children of grids/lists */
.reveal-stagger > * { opacity: 0; transform: translateY(12px); transition: opacity .5s ease-out, transform .6s cubic-bezier(.22,.61,.36,1); }
.reveal-stagger.is-in > *:nth-child(1) { transition-delay: .00s; }
.reveal-stagger.is-in > *:nth-child(2) { transition-delay: .06s; }
.reveal-stagger.is-in > *:nth-child(3) { transition-delay: .12s; }
.reveal-stagger.is-in > *:nth-child(4) { transition-delay: .18s; }
.reveal-stagger.is-in > *:nth-child(5) { transition-delay: .24s; }
.reveal-stagger.is-in > *:nth-child(6) { transition-delay: .30s; }
.reveal-stagger.is-in > * { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-zoom, .reveal-stagger > * { opacity: 1 !important; transform: none !important; transition: none !important; }
}