/* ========================================================================
   TrackChief — Mobile-only responsive treatment
   Scoped to phone-sized screens (≤ 640px). Desktop and tablet untouched.
   Every rule below lives inside @media (max-width: 640px).
   ======================================================================== */

/* Desktop/mobile label toggles used by pricing markup. Default: show desktop label. */
.plan .mob,
.pricing-trial-line,
.pricing-legal { display: none; }
.plan .desk { display: inline; }

/* Trackside tools dots — hidden on desktop/tablet; shown only in mobile carousel below */
.tools-dots { display: none; }

@media (max-width: 640px) {

  /* ---------- Global rhythm ---------- */
  html { scroll-padding-top: 72px; }
  body { font-size: 16px; }
  .container { padding-inline: 18px; }
  section { padding-block: 44px; }

  /* Trim big display type so headings feel purposeful on a phone
     (not just shrunk desktop type) */
  :root {
    --text-hero: 2.4rem;
    --text-3xl: 1.95rem;
    --text-2xl: 1.65rem;
    --text-xl: 1.3rem;
    --text-lg: 1.1rem;
    --text-base: 1rem;
  }
  h1, .hero h1 { letter-spacing: 0.002em; }
  .section-title { max-width: 24ch; }
  .section-lede { max-width: 44ch; font-size: 0.98rem; }

  /* ---------- Header / nav ---------- */
  .site-header .nav-wrap {
    padding-block: 8px;
    min-height: 52px;
    gap: 8px;
  }
  .site-header .brand-mark-img {
    height: 40px;
    width: 40px;
    filter: drop-shadow(0 0 10px rgba(0,229,255,0.32));
  }
  .hamburger { padding: 8px; }
  .site-header .btn.nav-cta { display: none; }
  .mobile-menu {
    top: 56px;
    left: 0;
    right: 0;
    bottom: 0;
    height: calc(100vh - 56px);
    height: calc(100dvh - 56px);
    padding: 20px 20px 40px;
  }
  .mobile-menu a { padding: 12px 10px; font-size: 1.05rem; }

  /* Reduce scroll offset for anchored links */
  html { scroll-padding-top: 72px; }

  /* ---------- Hero ---------- */
  .hero {
    padding-block: 48px 32px;
    min-height: unset;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .hero-copy .eyebrow { margin-bottom: 12px; }
  .hero-logo {
    height: 128px;
    margin-bottom: 16px;
  }
  .hero h1 {
    font-size: 2.4rem;
    line-height: 1.03;
    margin-bottom: 14px;
  }
  .hero-lede {
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 20px;
    max-width: 40ch;
  }
  .hero-ctas { gap: 10px; }
  .hero-ctas .btn { flex: 1 1 auto; min-height: 46px; padding-inline: 14px; }
  .hero-meta {
    display: flex;
    flex-wrap: wrap;
    margin-top: 24px;
    padding-top: 18px;
    gap: 18px 22px;
  }
  .hero-meta > div { flex: 0 1 auto; }
  .hero-meta strong { font-size: 0.95rem; }
  .hero-meta span { font-size: 0.65rem; letter-spacing: 0.18em; }
  .hero-visual .phone-frame-hero { max-width: 260px; margin-inline: auto; }

  /* ---------- Section headers (eyebrow + title + lede) ---------- */
  .eyebrow { margin-bottom: 12px; font-size: 0.65rem; }

  /* ---------- Feature grid (index #features) ---------- */
  #features .features-grid,
  .features-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .feature-card {
    padding: 18px 18px;
    border-radius: 14px;
  }
  .feature-card .feature-icon { margin-bottom: 10px; }
  .feature-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
  .feature-card p { font-size: 0.95rem; line-height: 1.5; }

  /* ---------- Full-bleed photo sections (Bike Hub, Tracks) ---------- */
  .section-photo-bg { min-height: unset; }
  .section-photo-bg .section-photo { opacity: 0.28; }
  .bike-hub-inner,
  .tracks-inner {
    padding-block: 40px;
  }
  .bike-hub-grid,
  .tracks-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .bike-hub-copy .section-title,
  .tracks-copy .section-title {
    font-size: 1.9rem;
    line-height: 1.05;
  }
  .phone-frame-wide { max-width: 300px; margin-inline: auto; }

  /* ---------- Trackside Tools ---------- */
  #tools .tools-grid,
  .tools-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .tool-card { padding: 20px; }
  .tool-shot { max-width: 240px; }
  .tool-card h3 { font-size: 1.15rem; }

  /* ---------- Ride Log section ---------- */
  #ride-log .ride-log-grid,
  .ride-log-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .ride-log-list li {
    padding: 12px 0;
    font-size: 0.95rem;
  }

  /* ---------- Rider gallery: mobile horizontal auto-rotating carousel ---------- */
  .rider-gallery { padding-block: 40px; }
  .rider-gallery > .container { padding-inline: 0; }
  .rider-gallery .gallery-head { padding-inline: 18px; margin-bottom: 16px; }

  .gallery-grid {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 78vw;
    grid-template-columns: none;
    gap: 12px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding: 4px 18px 18px;
    scrollbar-width: none;
  }
  .gallery-grid::-webkit-scrollbar { display: none; }
  .gallery-item {
    scroll-snap-align: center;
    aspect-ratio: 3 / 2;
    border-radius: 12px;
  }
  .gallery-item img { border-radius: 12px; }

  /* Dots / progress indicators */
  .gallery-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 6px;
    padding-inline: 18px;
  }
  .gallery-dots button {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    border: 0;
    padding: 0;
    background: rgba(255,255,255,0.22);
    cursor: pointer;
    transition: background .2s ease, transform .2s ease, width .2s ease;
  }
  .gallery-dots button[aria-current="true"] {
    background: var(--color-primary);
    width: 18px;
  }

  /* ---------- Built band ---------- */
  .built-band {
    padding-block: 56px;
  }
  .built-band .built-copy .section-title {
    font-size: 2rem;
  }

  /* ---------- Pricing (two compact cards, side by side) ---------- */
  .plan .desk { display: none; }
  .plan .mob { display: inline; }
  .plan ul li.li-desk-only { display: none; }

  #pricing { padding-block: 44px; }

  .pricing-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 22px;
    max-width: 100%;
  }
  .plan {
    padding: 16px 14px;
    border-radius: 14px;
    min-width: 0;
  }
  .plan-tag {
    font-size: 0.55rem;
    letter-spacing: 0.2em;
    margin-bottom: 6px;
  }
  .plan h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
    text-transform: uppercase;
  }
  .plan .price {
    gap: 4px;
    margin-bottom: 2px;
    flex-wrap: wrap;
  }
  .plan .price strong { font-size: 1.4rem; }
  .plan .price span { font-size: 0.72rem; }
  .plan .price-alt {
    font-size: 0.72rem;
    margin-bottom: 12px;
  }
  .plan ul {
    gap: 6px;
    margin-bottom: 14px;
  }
  .plan ul li {
    font-size: 0.82rem;
    line-height: 1.35;
    gap: 6px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--color-divider);
  }
  .plan ul li::before {
    content: '✓';
    color: var(--color-primary);
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.85rem;
  }
  .plan .btn {
    width: 100%;
    padding: 10px 8px;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    min-height: 44px;
  }
  .plan .footnote,
  .plan .plan-cta-note {
    display: none; /* consolidated into single line below the two cards */
  }

  .pricing-trial-line {
    display: block;
    text-align: center;
    margin-top: 16px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-primary);
  }
  .pricing-legal {
    display: block;
    text-align: center;
    max-width: 34ch;
    margin: 8px auto 0;
    font-size: 0.7rem;
    color: var(--color-text-faint);
    line-height: 1.4;
  }

  /* Extra safety on very narrow phones (~340px and below):
     stack the two cards vertically rather than crush them. */
  @media (max-width: 340px) {
    .pricing-grid { grid-template-columns: 1fr; }
  }

  /* ---------- Download section ---------- */
  .download-section { padding-block: 44px; }
  .download-section .section-title { font-size: 1.85rem; }
  .download-badges {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
  }
  .download-badges .badge,
  .download-badges > * {
    width: 100%;
    justify-content: center;
  }

  /* ---------- Partners section ---------- */
  #partners { padding-block: 44px; }
  .partners-card { padding: 26px 20px; }
  .partners-card h2 { font-size: 1.85rem; }
  .partners-card p { font-size: 0.95rem; }
  .partner-form { padding: 18px; }

  /* ---------- Final CTA ---------- */
  .final-cta { padding-block: 56px; }
  .final-cta h2 { font-size: 2rem; }

  /* ---------- Footer ---------- */
  .site-footer { padding-block: 32px; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .footer-brand p { font-size: 0.9rem; }
  .footer-col h4 { font-size: 0.72rem; margin-bottom: 8px; }
  .footer-col a { padding: 6px 0; display: inline-block; }
  .footer-bottom {
    flex-direction: column;
    gap: 6px;
    align-items: flex-start;
    font-size: 0.72rem;
  }

  /* ---------- Interior pages (FAQ, Support, Legal, etc.) ---------- */
  .page-hero {
    padding-block: 40px 24px;
  }
  .page-hero-logo {
    height: 108px;
    margin-bottom: 14px;
  }
  .page-hero h1 { font-size: 2rem; margin-bottom: 10px; }
  .page-hero p { font-size: 0.98rem; }

  .page-body { padding-block: 32px; }
  .faq-list { gap: 8px; margin-top: 20px; }
  .faq-item summary { padding: 14px 16px; font-size: 0.98rem; }
  .faq-answer { padding: 0 16px 16px; font-size: 0.95rem; }

  .support-grid { gap: 20px; }
  .form-card { padding: 20px; }
  .form-row label { font-size: 0.72rem; }
  .form-row input,
  .form-row select,
  .form-row textarea {
    font-size: 16px; /* prevents iOS zoom on focus */
    min-height: 44px;
  }
  .form-row textarea { min-height: 120px; }
  .info-card { padding: 16px 18px; }

  /* Ensure minimum tap targets everywhere */
  .btn { min-height: 44px; }
  .brand { padding: 4px; }

  /* ---------- Section 01 · Ecosystem — 2-up card grid on phones ---------- */
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .feature-grid .card {
    padding: 14px 14px 16px;
    border-radius: 14px;
  }
  .feature-grid .card .card-icon {
    width: 36px; height: 36px;
    border-radius: 8px;
    margin-bottom: 10px;
  }
  .feature-grid .card .card-icon svg { width: 18px; height: 18px; }
  .feature-grid .card h3 {
    font-size: 1rem;
    letter-spacing: 0.03em;
    margin-bottom: 6px;
  }
  .feature-grid .card p {
    font-size: 0.83rem;
    line-height: 1.4;
  }
  .feature-grid .card .card-tag {
    top: 10px; right: 10px;
    font-size: 0.55rem;
    letter-spacing: 0.18em;
  }

  /* ---------- Sections 02 Bike Hub, 04 Ride Log, 05 Tracks & Events —
     feature list becomes 2-column on phones so it isn't so scroll-heavy ---------- */
  #bike-hub .feature-list,
  #ride-log .feature-list,
  #tracks .feature-list {
    grid-template-columns: 1fr 1fr;
    gap: 4px 14px;
  }
  #bike-hub .feature-list li,
  #ride-log .feature-list li,
  #tracks .feature-list li {
    font-size: 0.88rem;
    padding-block: 8px;
    gap: 8px;
  }
  /* Fix the first-row top borders now that there are 2 items per row */
  #bike-hub .feature-list li,
  #ride-log .feature-list li,
  #tracks .feature-list li { border-top: 1px solid var(--color-divider); }
  #bike-hub .feature-list li:first-child,
  #bike-hub .feature-list li:nth-child(2),
  #ride-log .feature-list li:first-child,
  #ride-log .feature-list li:nth-child(2),
  #tracks .feature-list li:first-child,
  #tracks .feature-list li:nth-child(2) { border-top: 1px solid var(--color-border); }

  /* ---------- Section 03 · Trackside Tools — horizontal swipe carousel ---------- */
  #tools-carousel {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 12px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-snap-stop: always;
    -webkit-overflow-scrolling: touch;
    padding: 8px 18px 18px;
    margin-inline: -18px;              /* bleed to viewport edges */
    scrollbar-width: none;
    scroll-padding-left: 18px;
  }
  #tools-carousel::-webkit-scrollbar { display: none; }
  #tools-carousel .card-tool {
    flex: 0 0 86vw;
    max-width: 86vw;
    scroll-snap-align: start;
    height: auto;
  }
  #tools-carousel .card-tool .tool-shot img {
    width: 100%;
    height: auto;
  }
  .tools-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
    padding-inline: 18px;
  }
  .tools-dots button {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    border: 0;
    padding: 0;
    background: rgba(255,255,255,0.22);
    cursor: pointer;
    transition: background .2s ease, width .2s ease;
  }
  .tools-dots button[aria-current="true"] {
    background: var(--color-primary);
    width: 18px;
  }
}