/* =========================================================
   CloudAurum — Mobile-first responsive layer
   Spec-aligned: 375 / 390 / 414 / 430 / 768 / 1024 / 1280
   iOS Safari + Android Chrome native, not desktop-shrunk
   ========================================================= */

/* ---------- 0. Global iOS / touch primitives ---------- */
/* Token overrides removed — defer to tokens.css originals to preserve desktop layout */

html { -webkit-tap-highlight-color: transparent; }
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* overflow-x is already set on body in site.css; do NOT add to html (breaks iOS scroll) */

/* Cormorant Garamond 500 — ensure proper iOS rendering */
.logo-link {
  font-feature-settings: 'kern' 1, 'liga' 1;
  -webkit-font-feature-settings: 'kern' 1, 'liga' 1;
}

/* Tap targets: scoped to ≤900px so desktop nav stays normal height */
@media (max-width: 900px) {
  button, .btn, a.btn, .nav-cta, .cal-day, .cal-time, .tabbar button,
  .faq-item summary, .service-tile .learn-more {
    min-height: 44px;
  }
}

/* Tap feedback */
.btn:active, .nav-cta:active, .cal-time:active, .cal-day:active {
  transform: scale(0.98);
}

/* Body-copy links — padded tap area */
p a, .body-col p a, .field .hint a, dd a {
  display: inline-block;
  padding: 4px 0;
}

/* ---------- 1. Safe-area-aware container — only on mobile/tablet ---------- */
@media (max-width: 900px) {
  :root {
    --safe-pad-x: max(env(safe-area-inset-left, 0px), var(--container-pad));
    --safe-pad-r: max(env(safe-area-inset-right, 0px), var(--container-pad));
  }
  .container,
  .container-narrow,
  .container-prose {
    padding-left: var(--safe-pad-x);
    padding-right: var(--safe-pad-r);
  }
}

/* ---------- 2. Hero — small-screen tuning ---------- */
@media (max-width: 768px) {
  .hero {
    padding-top: calc(var(--nav-h) + var(--sp-10));
    padding-bottom: var(--sp-16);
    min-height: auto;
    align-items: flex-start;
  }
}

/* Headline clamp floor at 2.25rem (36px) on mobile per spec */
@media (max-width: 768px) {
  .hero h1 {
    font-size: clamp(2.25rem, 7vw + 0.5rem, 3.75rem);
    line-height: 1.08;
  }
}
@media (max-width: 540px) {
  .hero h1 {
    font-size: clamp(2.25rem, 9vw, 3rem);
    line-height: 1.1;
  }
  /* Italic clause wraps to its own line on narrow */
  .hero h1 em { display: block; margin-top: 0.15em; }
}

@media (max-width: 768px) {
  .hero .lead {
    font-size: 1rem;
    margin-bottom: var(--sp-8);
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-3);
    width: 100%;
  }
  .hero-actions .btn,
  .hero-actions .btn-light {
    width: 100%;
    justify-content: center;
    min-height: 48px;
    padding: 14px 24px;
  }
  .hero-actions .btn-secondary {
    text-align: center;
    padding: 10px 0;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .hero-metrics {
    margin-top: var(--sp-10);
    padding-top: var(--sp-6);
    grid-template-columns: 1fr;
    gap: var(--sp-5);
  }
  .hero-metric {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: baseline;
    gap: var(--sp-4);
  }
  .hero-metric .num { font-size: 1.875rem; }
  .hero-metric .label { margin-top: 0; }
  .hero-meta { display: none; }
}

/* Tablet — 2-col hero metrics */
@media (min-width: 600px) and (max-width: 900px) {
  .hero-metrics { grid-template-columns: 1fr 1fr; }
}

/* ---------- 3. Nav — mobile drawer overhaul ---------- */
/* Logo size in mobile nav: 22-24px */
@media (max-width: 768px) {
  :root { --nav-h: 64px; }
  .nav .logo-link { font-size: 23px; }
  .nav-inner { padding-right: 0; }
}

/* Hide desktop nav links + show hamburger */
@media (max-width: 900px) {
  .nav-links:not(.open) { display: none; }
  .nav-mobile { display: flex; }
}

/* Drawer: slide-down full-overlay */
@media (max-width: 900px) {
  .nav-links.open {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; right: 0;
    bottom: auto;
    height: auto;
    max-height: 100svh;
    background: var(--bg-page);
    padding: calc(var(--nav-h) + var(--sp-6)) var(--safe-pad-x) calc(var(--sp-8) + env(safe-area-inset-bottom, 0px));
    gap: 0;
    z-index: 99;
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: 0 24px 64px rgba(28, 25, 23, 0.18);
    animation: drawerDown 280ms cubic-bezier(0.16, 1, 0.3, 1);
  }
  .nav.on-dark-nav .nav-links.open {
    background: var(--bg-dark);
    border-bottom-color: var(--border-on-dark);
  }
  .nav.on-dark-nav .nav-links.open a { color: var(--text-on-dark); }

  .nav-links.open a {
    display: flex;
    align-items: center;
    min-height: 56px;
    padding: 12px 0;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-subtle);
    letter-spacing: -0.01em;
  }
  .nav.on-dark-nav .nav-links.open a {
    border-bottom-color: var(--border-on-dark);
  }
  .nav-links.open a.is-active {
    color: var(--gold);
  }
  .nav.on-dark-nav .nav-links.open a.is-active { color: var(--gold-light); }

  /* Book a Call: pinned to bottom, full-width pill */
  .nav-links.open .nav-cta {
    margin-top: var(--sp-8);
    min-height: 56px;
    padding: 16px 24px !important;
    justify-content: center;
    text-align: center;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    border-bottom: none;
    background: var(--text-primary);
    color: var(--bg-page) !important;
  }
  .nav.on-dark-nav .nav-links.open .nav-cta {
    background: var(--gold);
    color: var(--bg-dark) !important;
  }

  @keyframes drawerDown {
    from { transform: translateY(-100%); opacity: 0.6; }
    to   { transform: translateY(0); opacity: 1; }
  }

  /* Body scroll lock when drawer open (class added by JS) */
  body.nav-open { overflow: hidden; touch-action: none; }
}

/* Make the hamburger more prominent on mobile (it animates to X when active) */
@media (max-width: 900px) {
  .nav-mobile {
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    z-index: 101;
    position: relative;
  }
  .nav-mobile span {
    width: 22px;
    height: 1.5px;
    background: var(--text-primary);
    transition: all 280ms cubic-bezier(0.16, 1, 0.3, 1);
  }
  .nav.on-dark-nav .nav-mobile span { background: var(--text-on-dark); }
  /* When drawer is open and nav is on dark, keep hamburger color matching drawer text */
  .nav-mobile.active span { background: var(--text-primary); }
  .nav.on-dark-nav .nav-mobile.active span { background: var(--text-primary); }
  /* On dark nav with drawer open, drawer bg is dark → hamburger needs to be light */
  .nav.on-dark-nav .nav-links.open ~ .nav-mobile span,
  .nav.on-dark-nav .nav-mobile.active span { background: var(--text-on-dark); }
}

/* ---------- 4. Marquee ---------- */
@media (max-width: 768px) {
  .marquee { padding-block: var(--sp-5); }
  .marquee-track {
    font-size: 1rem;
    gap: var(--sp-8);
  }
  .marquee-track span { gap: var(--sp-3); }
}

/* ---------- 5. Section headers ---------- */
@media (max-width: 768px) {
  .section-header { margin-bottom: var(--sp-10); }
  .section-header h2 {
    font-size: clamp(1.75rem, 7vw, 2.5rem);
    line-height: 1.15;
  }
  .section-header .lead { font-size: 1rem; }
}

/* ---------- 6. Card grids — collapse at 768px per spec ---------- */
.grid-3, .grid-2 {
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}
@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 769px) {
  /* iPad portrait stays 2-up for grid-3, gets cleaner reading rhythm */
  .grid-3 { grid-template-columns: repeat(2, 1fr); gap: var(--sp-5); }
}
@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
}

/* Card padding 40px → 28px on mobile per spec */
@media (max-width: 768px) {
  .card, .service-tile {
    padding: 28px;
  }
  .card h4, .service-tile h3 {
    font-size: 1.125rem;
  }
  .card p, .service-tile p {
    font-size: 0.9375rem;
  }
  .service-tile h3 { font-size: 1.25rem; }
}

/* Touch :active state on cards — briefly darker background */
.card:active, .service-tile:active {
  background: var(--bg-warm);
  transition: background 80ms ease;
}
@media (hover: none) {
  .card:hover, .service-tile:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border-subtle);
  }
  .card::after, .service-tile::after { display: none; }
}

/* ---------- 7. Process strip — VERTICAL hairline on mobile ---------- */
@media (max-width: 768px) {
  .process-strip {
    grid-template-columns: 1fr;
    gap: 0;
    position: relative;
    padding-left: 28px;
  }
  .process-strip::before {
    content: '';
    position: absolute;
    top: 28px;
    bottom: 28px;
    left: 27px; /* center of 56px circle from left:0 */
    width: 1px;
    height: auto;
    background: linear-gradient(180deg, transparent 0%, var(--gold-medium) 12%, var(--gold-medium) 88%, transparent 100%);
    display: block;
  }
  .process-phase {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: var(--sp-5);
    padding: var(--sp-5) 0;
    align-items: start;
    margin-left: -28px;
    padding-left: 0;
    border-bottom: none;
  }
  .process-num {
    margin-bottom: 0;
    margin-left: 0;
    width: 56px;
    height: 56px;
    font-size: 1.5rem;
    flex-shrink: 0;
  }
  .section-warm .process-num { background: var(--bg-warm); }
}
@media (max-width: 540px) {
  .process-strip { padding-left: 24px; }
  .process-strip::before { left: 23px; }
  .process-phase {
    grid-template-columns: 48px 1fr;
    gap: var(--sp-4);
    margin-left: -24px;
  }
  .process-num { width: 48px; height: 48px; font-size: 1.25rem; }
  .process-strip::before { left: 23px; }
}

/* ---------- 8. Leak diagram ---------- */
@media (max-width: 768px) {
  .leak-diagram {
    padding: var(--sp-6);
    gap: var(--sp-6);
    margin-top: var(--sp-8);
    grid-template-columns: 1fr;
  }
  .leak-diagram h3 { font-size: 1.375rem; }
  .leak-svg-wrap { padding: var(--sp-4); }
}

/* ---------- 9. Service detail — kill sticky on mobile ---------- */
@media (max-width: 900px) {
  .service-detail-inner {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }
  .service-meta {
    position: static;
    padding-bottom: var(--sp-6);
    border-bottom: 1px solid var(--border-subtle);
  }
  .service-meta .num { font-size: 2rem; }
  .service-meta h2 { font-size: clamp(1.75rem, 6vw, 2.25rem); }
  .service-meta .btn-primary { width: 100%; justify-content: center; }
  .service-detail .content .lead { font-size: 1.0625rem; }
}

@media (max-width: 768px) {
  .service-detail .content ul li {
    font-size: 0.9375rem;
    padding-left: var(--sp-5);
  }
  .callout {
    padding: var(--sp-4) var(--sp-5);
    margin-top: var(--sp-6);
  }
  .callout p { font-size: 1.0625rem; line-height: 1.45; }
  .stack-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: var(--sp-3) var(--sp-4);
  }
  .tiers-grid {
    grid-template-columns: 1fr;
  }
  .tier-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-2);
    padding: var(--sp-4) var(--sp-5);
  }
}

/* Service-tile learn-more — larger tap area */
@media (max-width: 768px) {
  .service-tile .learn-more {
    padding: 12px 0;
    min-height: 48px;
    align-items: center;
    display: inline-flex;
    font-size: 1rem;
  }
  .service-tile .learn-more::after { font-size: 1.125rem; }
}

/* ---------- 10. Tab bar — horizontal scroller ---------- */
@media (max-width: 768px) {
  .tabbar {
    display: flex;
    overflow-x: auto;
    flex-wrap: nowrap;
    width: calc(100% + var(--safe-pad-x) * 2);
    margin-left: calc(var(--safe-pad-x) * -1);
    padding: 4px var(--safe-pad-x);
    background: transparent;
    border: none;
    border-radius: 0;
    margin-bottom: var(--sp-8);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    scroll-snap-type: x mandatory;
  }
  .tabbar::-webkit-scrollbar { display: none; }
  .tabbar button {
    flex-shrink: 0;
    scroll-snap-align: start;
    background: var(--bg-warm);
    border: 1px solid var(--border-subtle);
    font-size: 0.8125rem;
    padding: 10px 16px;
    min-height: 44px;
  }
  .tabbar button.is-active {
    background: var(--text-primary);
    color: var(--bg-page);
    border-color: var(--text-primary);
  }
}

/* ---------- 11. Figures row ---------- */
@media (max-width: 768px) {
  .figures-row {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-5);
    padding: var(--sp-8) 0;
  }
  .figure .num { font-size: 1.875rem; }
}
@media (max-width: 380px) {
  .figures-row { grid-template-columns: 1fr; }
}

/* ---------- 12. About page ---------- */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }
  .about-grid .label-col { position: static; }
}

@media (max-width: 768px) {
  .about-grid .label-col h2 { font-size: clamp(1.5rem, 6vw, 2.25rem); }
  .about-grid .body-col p { font-size: 1rem; line-height: 1.7; }
  .pull-quote {
    padding: var(--sp-12) var(--safe-pad-x);
  }
  .pull-quote blockquote {
    font-size: clamp(1.125rem, 5vw, 1.5rem);
    line-height: 1.4;
  }
  .pull-quote blockquote::before, .pull-quote blockquote::after {
    margin: var(--sp-4) auto;
  }
  .portrait { aspect-ratio: 1 / 1; max-width: 320px; }
  .timeline-row {
    grid-template-columns: 60px 1fr;
    gap: var(--sp-4);
    padding: var(--sp-5) 0;
  }
  .timeline-year { font-size: 1.125rem; }
}

/* ---------- 13. Contact page ---------- */
@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-10);
  }
}

@media (max-width: 768px) {
  .cal-slot { padding: var(--sp-5); }
  .cal-head {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-2);
    padding-bottom: var(--sp-4);
    margin-bottom: var(--sp-4);
  }
  .cal-head h3 { font-size: 1.25rem; }
  .cal-calendar {
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
  }
  .cal-day { padding: 10px 4px; min-height: 56px; }
  .cal-day-date { font-size: 1.0625rem; }
  .cal-day-name { font-size: 0.6875rem; }
  .cal-slots { grid-template-columns: repeat(2, 1fr); }
  .cal-time { padding: 14px var(--sp-3); min-height: 48px; }
  .cal-confirm {
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-3);
  }
  .cal-confirm .btn { width: 100%; justify-content: center; min-height: 48px; }
  .cal-confirm .selected { text-align: center; font-size: 1rem; }

  .contact-meta dl { gap: var(--sp-4); }
  .contact-meta dd { font-size: 1.0625rem; }

  .contact-form .btn { width: 100%; justify-content: center; min-height: 48px; }
}

/* ---------- 14. Page-hero typography ---------- */
@media (max-width: 768px) {
  .page-hero {
    padding-top: calc(var(--nav-h) + var(--sp-10));
    padding-bottom: var(--sp-10);
  }
  .page-hero h1 {
    font-size: clamp(2rem, 7vw + 0.25rem, 3.5rem);
    line-height: 1.1;
  }
  .page-hero .lead { font-size: 1rem; }
}

/* ---------- 15. CTA band ---------- */
@media (max-width: 768px) {
  .cta-band { padding-block: var(--sp-16); }
  .cta-band h2 {
    font-size: clamp(1.75rem, 6vw + 0.5rem, 2.5rem);
    line-height: 1.15;
  }
  .cta-band .lead { font-size: 1rem; }
  .cta-band .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-3);
  }
  .cta-band .hero-actions .btn {
    width: 100%;
    justify-content: center;
    min-height: 48px;
  }
  .cta-band .hero-actions .btn-secondary {
    text-align: center;
    padding: 12px 0;
    min-height: 44px;
  }
}

/* ---------- 16. Footer ---------- */
@media (max-width: 768px) {
  .footer {
    padding-block: var(--sp-10) calc(var(--sp-6) + env(safe-area-inset-bottom, 0px));
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
    margin-bottom: var(--sp-8);
  }
  .footer-meta {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--sp-6);
  }
  .footer-meta-group { flex: 1 1 140px; }
  .footer-brand .logo-link { font-size: 24px; }
  .footer-tagline { font-size: 1rem; }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-2);
    text-align: left;
  }
}

/* ---------- 17. FAQ ---------- */
@media (max-width: 768px) {
  .faq-item { padding-block: var(--sp-4); }
  .faq-item summary {
    gap: var(--sp-3);
    min-height: 56px;
    align-items: center;
  }
  .faq-item h4 { font-size: 1.125rem; line-height: 1.3; }
  .faq-item summary .toggle { font-size: 1.5rem; }
}

/* ---------- 18. Nav backdrop-filter perf on small Android ---------- */
@media (max-width: 480px) {
  .nav.scrolled {
    background: rgba(244, 243, 241, 0.96);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .nav.scrolled.on-dark-nav {
    background: rgba(14, 13, 11, 0.94);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

/* ---------- 19. iOS Safari prevent input zoom ---------- */
@media (max-width: 768px) {
  .field input,
  .field textarea,
  .field select {
    font-size: 16px;
  }
}

/* ---------- 20. Long-word safety ---------- */
h1, h2, h3, p { overflow-wrap: break-word; word-wrap: break-word; }

/* ---------- 21. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
  .hero-particles span { animation: none !important; }
  .route-shell { animation: none; }
  .hero-meta .dot { animation: none; }
  .card:hover, .service-tile:hover,
  .btn:hover, .nav-cta:hover { transform: none; }
  .nav-links.open { animation: none; }
  /* keep opacity transitions, kill transforms */
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ---------- 22. iOS svh for any fullscreen surface ---------- */
@supports (height: 100svh) {
  .hero { min-height: min(820px, 88svh); }
}

/* ---------- 23. Body padding so fixed nav doesn't clip safe area on landscape iPhone ---------- */
.nav {
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
}

/* ---------- 24. 1024px iPad landscape — reading rhythm ---------- */
@media (min-width: 1024px) and (max-width: 1280px) {
  :root { --section-pad-y: clamp(72px, 8vw, 120px); }
}