/* ============================================================
   airtap platform v2.1 // style.css
   Art direction: Editorial / "community chat -> search engine"
   Sections alternate ink -> cream -> ink -> accent -> cream -> dark
   Section bridges smooth every contrast transition.
   ============================================================ */

/* --- LAYER ORDER --- */
@layer reset, tokens, base, layout, components, sections, bridges, utilities;

/* --- TOKENS --- */
@layer tokens {
  :root {
    /* primitives */
    --ink: #14110d;
    --ink2: #1d1812;
    --ink3: #251f17;
    --cream: #f1ece4;
    --cream-dim: rgba(241, 236, 228, .65);
    --cream-mute: rgba(241, 236, 228, .45);
    --paper: #f6f1e8;
    --paper-warm: #eee6da;
    --acc: #C2512E;
    --acc-on-dark: #D87355;
    --acc-soft: rgba(194, 81, 46, .14);
    --acc-glow: rgba(194, 81, 46, .45);
    --acc-deep: #a8431f;
    --acc-surface: #2f2018;
    --footer-bg: #0f0c09;

    /* lines */
    --line: rgba(241, 236, 228, .1);
    --line2: rgba(241, 236, 228, .18);
    --line-dark: rgba(20, 17, 13, .1);
    --line-dark2: rgba(20, 17, 13, .18);

    /* spacing scale (4-base) */
    --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px;
    --sp-5: 24px; --sp-6: 32px; --sp-8: 48px; --sp-10: 64px;
    --sp-12: 96px; --sp-16: 128px;

    /* radius */
    --r-sm: 4px; --r-md: 8px; --r-lg: 16px; --r-xl: 24px; --r-full: 9999px;

    /* shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,.08);
    --shadow-md: 0 6px 16px rgba(0,0,0,.10);
    --shadow-lg: 0 12px 32px rgba(0,0,0,.14);
    --shadow-2xl: 0 24px 64px rgba(0,0,0,.22);

    /* type scale */
    --type-display: clamp(3rem, 5.5vw, 5rem);
    --type-h1: clamp(2rem, 3.5vw, 3rem);
    --type-h2: clamp(1.75rem, 3vw, 2.75rem);
    --type-h3: clamp(1.125rem, 1.5vw, 1.375rem);
    --type-body: 1rem;
    --type-sm: 0.875rem;
    --type-caption: 0.8125rem;
    --type-eyebrow: 0.6875rem;

    /* layout */
    --w: 1240px;
    --w-narrow: 900px;

    /* easing */
    --ease-out-expo: cubic-bezier(.16,1,.3,1);
  }
}

/* --- RESET --- */
@layer reset {
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body {
    background: var(--ink);
    color: var(--cream);
    font-family: Inter, sans-serif;
    font-size: var(--type-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.55;
  }
  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
  ul { list-style: none; }
}

/* --- BASE TYPOGRAPHY --- */
@layer base {
  .eye {
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--type-eyebrow);
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--acc-on-dark);
    margin-bottom: var(--sp-4);
  }
  .eye.on-light { color: var(--acc); }

  .display {
    font-family: Fraunces, serif;
    font-optical-sizing: auto;
    font-variation-settings: "opsz" 144, "SOFT" 50;
    font-size: var(--type-display);
    font-weight: 300;
    letter-spacing: -.04em;
    line-height: .95;
    text-wrap: balance;
  }
  .display .it {
    font-style: italic;
    font-weight: 300;
  }

  .h2 {
    font-family: Fraunces, serif;
    font-optical-sizing: auto;
    font-variation-settings: "opsz" 144;
    font-size: var(--type-h2);
    font-weight: 400;
    letter-spacing: -.03em;
    line-height: 1.1;
    text-wrap: balance;
  }
  .h2 em {
    font-style: italic;
    font-weight: 300;
    color: var(--acc);
  }
  .h2.on-light em { color: var(--acc); }

  /* h2 variant: leading number */
  .h2--num-lead .h2-num {
    font-family: Fraunces, serif;
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 300;
    color: var(--acc);
    letter-spacing: -.04em;
  }

  /* h2 variant: editorial break (no em, just bold short lines) */
  .h2--editorial {
    line-height: 1.15;
  }

  /* h2 variant: mono code inline */
  .h2-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: .75em;
    letter-spacing: .02em;
    color: var(--acc-on-dark);
    background: rgba(194,81,46,.14);
    padding: .1em .35em;
    border-radius: var(--r-sm);
    vertical-align: .05em;
  }

  /* h2 variant: marker underline */
  .h2-mark {
    background-image: linear-gradient(transparent 60%, rgba(194,81,46,.25) 60%);
    background-repeat: no-repeat;
    background-size: 100% 100%;
  }

  .h3 {
    font-size: var(--type-h3);
    font-weight: 700;
    letter-spacing: -.015em;
    line-height: 1.25;
  }

  .body-lg {
    font-size: 1.0625rem;
    line-height: 1.65;
    max-width: 600px;
  }

  .mono {
    font-family: 'JetBrains Mono', monospace;
  }
}

/* --- LAYOUT --- */
@layer layout {
  .wrap {
    max-width: var(--w);
    margin: 0 auto;
    padding: 0 var(--sp-8);
  }
  .wrap-narrow {
    max-width: var(--w-narrow);
    margin: 0 auto;
    padding: 0 var(--sp-8);
  }
  @media (max-width: 1024px) {
    .wrap, .wrap-narrow { padding: 0 var(--sp-6); }
  }
  @media (max-width: 640px) {
    .wrap, .wrap-narrow { padding: 0 20px; }
  }
}

/* --- BUTTONS --- */
@layer components {
  .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-3) var(--sp-5);
    border-radius: var(--r-md);
    font-size: var(--type-sm);
    font-weight: 600;
    transition: background .2s ease, border-color .2s ease, box-shadow .2s ease;
    border: 1px solid transparent;
    white-space: nowrap;
    cursor: pointer;
    will-change: transform;
  }
  .btn:active { transform: scale(.97); }
  .btn.gh {
    color: var(--cream);
    border-color: var(--line2);
    background: transparent;
  }
  .btn.gh:hover {
    background: rgba(241,236,228,.06);
    border-color: var(--cream-mute);
  }
  .btn.gh.on-light {
    color: var(--ink);
    border-color: var(--line-dark2);
  }
  .btn.gh.on-light:hover {
    background: rgba(20,17,13,.06);
    border-color: rgba(20,17,13,.35);
  }
  .btn.pr {
    background: var(--acc);
    color: #fff;
    box-shadow: 0 6px 22px -8px var(--acc-glow);
  }
  .btn.pr:hover {
    background: var(--acc-deep);
    box-shadow: 0 8px 28px -6px var(--acc-glow);
  }
  .btn.lg {
    padding: var(--sp-4) var(--sp-5);
    font-size: 0.9375rem;
    border-radius: var(--r-lg);
  }

  /* magnetic button base (JS adds transform) */
  .magnetic {
    transition: background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .4s var(--ease-out-expo);
  }
}

/* --- HEADER --- */
@layer sections {
  .hdr {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(20,17,13,.78);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border-bottom: 1px solid var(--line);
    transition: background .25s, border-color .25s;
  }
  .hdr.scrolled {
    background: rgba(20,17,13,.92);
    border-bottom-color: var(--line2);
  }
  .hdr-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 18px;
    padding-bottom: 18px;
    gap: var(--sp-6);
  }
  .nav {
    display: flex;
    gap: var(--sp-6);
    font-size: var(--type-sm);
    color: var(--cream-dim);
    align-items: center;
  }
  .nav a { transition: color .2s; white-space: nowrap; }
  .nav a:hover { color: var(--cream); }
  .hdr-cta { display: flex; gap: var(--sp-3); align-items: center; }

  /* logo lockup: [terracotta box: vs-mark + "Air" white] + "Tap" cream */
  .lk {
    display: inline-flex;
    align-items: center;
    gap: 0;
    font-weight: 800;
    letter-spacing: -.015em;
  }
  .lk-box {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--acc);
    color: #fff;
    padding: 6px 10px 6px 8px;
    border-radius: 9px;
    box-shadow: 0 4px 14px rgba(194,81,46,.35);
  }
  .lk-mk {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
  }
  .lk-mk svg { display: block; overflow: visible; }
  .lk-air { font-size: 16px; font-weight: 800; }
  .lk-tap { font-size: 16px; font-weight: 800; color: var(--cream); padding-left: 6px; }

  .lk.s32 .lk-box { padding: 8px 12px 8px 10px; }
  .lk.s32 .lk-mk svg { width: 26px; height: 26px; }
  .lk.s32 .lk-air, .lk.s32 .lk-tap { font-size: 19px; }

  /* mobile nav */
  .mnav-btn {
    display: none;
    width: 38px; height: 38px;
    border: 1px solid var(--line2);
    border-radius: var(--r-md);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
  }
  .mnav-btn span {
    width: 18px; height: 1.5px;
    background: var(--cream);
    transition: transform .2s, opacity .15s;
    display: block;
  }
  .mnav-btn.on span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .mnav-btn.on span:nth-child(2) { opacity: 0; }
  .mnav-btn.on span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

  @media (max-width: 780px) {
    .mnav-btn { display: flex; }
    .nav {
      display: none;
      position: absolute;
      top: 100%; left: 0; right: 0;
      background: rgba(20,17,13,.97);
      backdrop-filter: blur(14px);
      border-top: 1px solid var(--line2);
      border-bottom: 1px solid var(--line2);
      flex-direction: column;
      padding: var(--sp-4) var(--sp-5);
      gap: var(--sp-2);
    }
    .nav.mnav-show { display: flex; }
    .nav a {
      padding: var(--sp-3) 0;
      font-size: var(--type-body);
      border-bottom: 1px solid var(--line);
    }
    .nav a:last-child { border-bottom: 0; }
    .hdr { position: relative; }
  }
}

/* ==============================================
   HERO -- editorial, full-bleed, typing demo
   ============================================== */
@layer sections {
  .hero {
    position: relative;
    overflow: hidden;
    padding: var(--sp-16) 0 var(--sp-12);
    min-height: min(92vh, 860px);
    display: flex;
    align-items: center;
  }

  /* background: grain + radial glow */
  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
      radial-gradient(ellipse 70% 60% at 75% 30%, rgba(194,81,46,.12) 0%, transparent 70%),
      radial-gradient(ellipse 50% 50% at 20% 80%, rgba(194,81,46,.06) 0%, transparent 70%);
    pointer-events: none;
  }
  .hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.025'/%3E%3C/svg%3E");
    opacity: .6;
    pointer-events: none;
  }

  .hero .wrap {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-10);
    align-items: center;
  }

  .hero-text { max-width: 600px; }

  .hero-text .eye { margin-bottom: var(--sp-5); }

  .hero-text .display {
    color: var(--cream);
    margin-bottom: var(--sp-5);
  }
  .hero-text .display .it {
    color: var(--acc);
  }

  .hero-text .body-lg {
    color: var(--cream-dim);
    margin-bottom: var(--sp-8);
  }

  .hero-cta {
    display: flex;
    gap: var(--sp-4);
    flex-wrap: wrap;
  }

  /* ---- STAGGERED PAGE-LOAD ENTRANCE ---- */
  @keyframes entrance {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: none; }
  }

  @media (prefers-reduced-motion: no-preference) {
    [data-animate] {
      opacity: 0;
      animation: entrance .7s var(--ease-out-expo) both;
    }
    .hero-text .eye[data-animate]    { animation-delay: 0ms; }
    .hero-text .display[data-animate] { animation-delay: 120ms; }
    .hero-text .body-lg[data-animate] { animation-delay: 240ms; }
    .hero-cta[data-animate]          { animation-delay: 380ms; }
    .hero-demo[data-animate]         { animation-delay: 300ms; }
  }
  @media (prefers-reduced-motion: reduce) {
    [data-animate] { opacity: 1; }
  }

  /* ---- DEMO MOCK (right column) ---- */
  .hero-demo {
    position: relative;
  }

  .demo-window {
    border: 1px solid var(--line2);
    border-radius: var(--r-lg);
    overflow: hidden;
    background: var(--ink2);
    box-shadow: var(--shadow-2xl), 0 0 120px -40px rgba(194,81,46,.15);
  }

  .demo-titlebar {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-3) var(--sp-4);
    background: var(--ink3);
    border-bottom: 1px solid var(--line);
  }
  .demo-dot {
    width: 10px; height: 10px;
    border-radius: var(--r-full);
    background: var(--line2);
  }
  .demo-dot:first-child { margin-left: var(--sp-1); }
  .demo-url {
    flex: 1;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--cream-mute);
    letter-spacing: .02em;
    transition: color .3s ease;
  }

  .demo-search {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    padding: var(--sp-4) var(--sp-5);
    border-bottom: 1px solid var(--line);
  }
  .demo-search-icon {
    color: var(--cream-mute);
    flex-shrink: 0;
    display: flex;
  }
  .demo-query {
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--type-sm);
    color: var(--cream);
    flex: 1;
    min-height: 1.4em;
  }
  .demo-query .cursor-blink {
    display: inline-block;
    width: 2px;
    height: 1.1em;
    background: var(--acc);
    vertical-align: text-bottom;
    margin-left: 1px;
    animation: blink .8s step-end infinite;
  }
  @keyframes blink {
    50% { opacity: 0; }
  }

  .demo-result {
    padding: var(--sp-5);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity .5s ease, transform .5s ease;
  }
  .demo-result.visible {
    opacity: 1;
    transform: none;
  }
  .demo-result-head {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    margin-bottom: var(--sp-3);
    flex-wrap: wrap;
  }
  .demo-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--sp-1) var(--sp-3);
    border-radius: var(--r-sm);
    background: var(--acc-soft);
    color: var(--acc-on-dark);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .04em;
  }
  .demo-src {
    font-size: 11px;
    color: var(--cream-mute);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: .02em;
  }
  .demo-answer {
    font-size: var(--type-sm);
    line-height: 1.65;
    color: var(--cream-dim);
    margin-bottom: var(--sp-4);
  }
  .demo-refs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
  }
  .demo-ref {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--acc-on-dark);
    padding: var(--sp-1) var(--sp-2);
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    transition: border-color .15s, background .15s;
    cursor: default;
  }
  .demo-ref:hover {
    border-color: var(--acc);
    background: var(--acc-soft);
  }

  /* ---- live query carousel under demo ---- */
  .demo-carousel {
    margin-top: var(--sp-4);
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
    min-height: 28px;
  }
  .demo-carousel .carousel-chip {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--cream-mute);
    padding: var(--sp-1) var(--sp-3);
    border: 1px solid var(--line);
    border-radius: var(--r-full);
    cursor: pointer;
    transition: border-color .2s, color .2s, background .2s;
    white-space: nowrap;
  }
  .demo-carousel .carousel-chip:hover,
  .demo-carousel .carousel-chip.active {
    border-color: var(--acc);
    color: var(--acc-on-dark);
    background: var(--acc-soft);
  }

  @media (max-width: 900px) {
    .hero { padding: var(--sp-12) 0 var(--sp-10); min-height: auto; }
    .hero .wrap {
      grid-template-columns: 1fr;
      gap: var(--sp-8);
    }
    .hero-text { max-width: none; }
  }
  @media (max-width: 640px) {
    .hero { padding: 80px 0 var(--sp-10); }
    .display { font-size: clamp(2.25rem, 8vw, 3rem); }
  }
}

/* ==============================================
   SECTION BRIDGES -- smooth transitions
   ============================================== */
@layer bridges {
  .section-bridge {
    height: clamp(64px, 8vw, 100px);
    pointer-events: none;
    position: relative;
    z-index: 1;
  }

  /* hero (ink) -> how (cream) */
  .bridge-ink-cream {
    background: linear-gradient(to bottom, var(--ink), var(--paper));
  }

  /* how (cream) -> numbers (ink) */
  .bridge-cream-ink {
    background: linear-gradient(to bottom, var(--paper), var(--ink));
  }

  /* cases (ink) -> whom (accent) */
  .bridge-ink-accent {
    background: linear-gradient(to bottom, var(--ink), var(--acc-surface));
  }

  /* whom (accent) -> lead (cream) */
  .bridge-accent-cream {
    background: linear-gradient(to bottom, var(--acc-surface), var(--paper));
  }

  /* lead (cream) -> footer (dark) */
  .bridge-cream-dark {
    background: linear-gradient(to bottom, var(--paper), var(--footer-bg));
  }
}

/* ==============================================
   HOW IT WORKS -- CREAM surface, horizontal flow
   ============================================== */
@layer sections {
  .how-section {
    background: var(--paper);
    color: var(--ink);
    padding: var(--sp-12) 0;
    position: relative;
  }
  .how-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.03'/%3E%3C/svg%3E");
    opacity: 1;
    pointer-events: none;
  }

  .how-section .wrap { position: relative; z-index: 1; }

  .how-header {
    max-width: 560px;
    margin-bottom: var(--sp-10);
  }
  .how-header .h2 { color: var(--ink); }
  .how-header .h2 em { color: var(--acc); }

  /* steps as horizontal track with big numbers */
  .how-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    position: relative;
  }

  /* connecting line */
  .how-steps::before {
    content: '';
    position: absolute;
    top: 38px;
    left: 38px;
    right: 38px;
    height: 2px;
    background: rgba(20,17,13,.15);
  }

  .how-step {
    position: relative;
    padding: 0 var(--sp-6);
    text-align: left;
  }
  .how-step:first-child { padding-left: 0; }
  .how-step:last-child { padding-right: 0; }

  .how-step-num {
    width: 76px; height: 76px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--r-full);
    background: var(--ink);
    color: var(--cream);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--sp-5);
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-md);
  }

  .how-step .h3 {
    color: var(--ink);
    margin-bottom: var(--sp-2);
  }
  .how-step p {
    font-size: var(--type-sm);
    line-height: 1.6;
    color: rgba(20,17,13,.65);
    max-width: 300px;
  }

  @media (max-width: 900px) {
    .how-steps {
      grid-template-columns: 1fr;
      gap: var(--sp-8);
    }
    .how-steps::before { display: none; }
    .how-step { padding: 0; display: flex; gap: var(--sp-5); align-items: flex-start; }
    .how-step-num {
      width: 56px; height: 56px;
      font-size: 1.125rem;
      flex-shrink: 0;
    }
    .how-step p { max-width: none; }
  }
}

/* ==============================================
   CASES -- dark, bento-style, differentiated
   ============================================== */
@layer sections {
  .cases-section {
    background: var(--ink);
    padding: var(--sp-12) 0;
    position: relative;
  }

  .cases-header {
    margin-bottom: var(--sp-8);
  }
  .cases-header .body-lg {
    color: var(--cream-dim);
    margin-top: var(--sp-4);
  }

  .cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--sp-5);
  }

  .case-card {
    display: flex;
    flex-direction: column;
    padding: var(--sp-6);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    background: var(--ink2);
    transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .case-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--case-accent, var(--acc));
    opacity: 0;
    transition: opacity .25s ease;
  }
  .case-card:hover::before { opacity: 1; }
  .case-card:hover {
    border-color: rgba(241,236,228,.22);
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
  }

  /* differentiated accent per case */
  .case-card[data-accent="terracotta"] { --case-accent: #C2512E; }
  .case-card[data-accent="amber"] { --case-accent: #C97E2E; }
  .case-card[data-accent="teal"] { --case-accent: #2E8B8B; }
  .case-card[data-accent="slate"] { --case-accent: #5B7C8D; }
  .case-card[data-accent="forest"] { --case-accent: #4A7C59; }

  .case-card.placeholder {
    border-style: dashed;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 200px;
    background: transparent;
  }
  .case-card.placeholder:hover {
    border-color: var(--acc);
    background: var(--acc-soft);
  }
  .case-card.placeholder::before { display: none; }

  .case-placeholder-text {
    font-family: Fraunces, serif;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--cream);
    margin-bottom: var(--sp-2);
    letter-spacing: -.01em;
  }
  .case-placeholder-sub {
    font-size: var(--type-caption);
    color: var(--cream-mute);
  }

  .case-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--cream-mute);
    margin-bottom: var(--sp-3);
  }
  .case-icon {
    margin-bottom: var(--sp-3);
    font-size: 1.5rem;
    line-height: 1;
  }
  .case-name {
    font-family: Fraunces, serif;
    font-size: 1.375rem;
    font-weight: 500;
    letter-spacing: -.02em;
    margin-bottom: var(--sp-2);
    color: var(--cream);
  }

  .case-stats {
    display: flex;
    gap: var(--sp-3);
    flex-wrap: wrap;
    margin-bottom: var(--sp-4);
  }
  .case-stat {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-1);
    padding: var(--sp-1) var(--sp-3);
    border-radius: var(--r-sm);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .02em;
  }
  .case-stat.primary {
    background: var(--acc-soft);
    color: var(--acc-on-dark);
  }
  .case-stat.secondary {
    background: rgba(241,236,228,.06);
    color: var(--cream-dim);
  }

  .case-desc {
    font-size: var(--type-sm);
    line-height: 1.6;
    color: var(--cream-dim);
    margin-bottom: auto;
  }

  .case-example {
    margin-top: var(--sp-5);
    padding-top: var(--sp-4);
    border-top: 1px solid var(--line);
  }
  .case-example-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--cream-mute);
    margin-bottom: var(--sp-1);
  }
  .case-example-q {
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--type-caption);
    color: var(--cream);
    line-height: 1.5;
    padding: var(--sp-2) var(--sp-3);
    background: rgba(241,236,228,.04);
    border-radius: var(--r-sm);
    border-left: 2px solid var(--case-accent, var(--acc));
  }

  /* origin badge for first case */
  .case-origin-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-1);
    padding: 2px var(--sp-2);
    border-radius: var(--r-sm);
    background: rgba(74,124,89,.2);
    color: #7db88e;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    margin-bottom: var(--sp-3);
  }

  @media (max-width: 640px) {
    .cases-grid { grid-template-columns: 1fr; }
  }
}

/* ==============================================
   FOR WHOM -- accent surface (warm brown), editorial
   ============================================== */
@layer sections {
  .whom-section {
    background: var(--acc-surface);
    padding: var(--sp-12) 0;
    position: relative;
    overflow: hidden;
  }
  .whom-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
      radial-gradient(ellipse 70% 70% at 80% 20%, rgba(194,81,46,.14) 0%, transparent 55%),
      radial-gradient(ellipse 50% 60% at 15% 85%, rgba(194,81,46,.08) 0%, transparent 50%);
    pointer-events: none;
  }

  .whom-section .wrap { position: relative; z-index: 1; }

  .whom-header {
    max-width: 560px;
    margin-bottom: var(--sp-10);
  }

  /* bento grid: 2 big + 1 tall right, not uniform 3-col */
  .whom-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: var(--sp-5);
    margin-bottom: var(--sp-10);
  }

  .whom-card {
    padding: var(--sp-6);
    border: 1px solid rgba(241,236,228,.14);
    border-radius: var(--r-lg);
    background: rgba(241,236,228,.06);
    backdrop-filter: blur(4px);
    transition: background .2s ease, border-color .2s ease;
  }
  .whom-card:hover {
    background: rgba(241,236,228,.10);
    border-color: rgba(241,236,228,.24);
  }
  .whom-card:last-child {
    grid-column: 1 / -1;
  }

  .whom-icon {
    width: var(--sp-8);
    height: var(--sp-8);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--r-md);
    background: rgba(194,81,46,.25);
    color: var(--acc-on-dark);
    margin-bottom: var(--sp-5);
  }
  .whom-card .h3 { margin-bottom: var(--sp-2); }
  .whom-card p {
    font-size: var(--type-sm);
    line-height: 1.65;
    color: var(--cream-dim);
  }

  /* placements as inline horizontal chips */
  .placement-header {
    margin-bottom: var(--sp-5);
  }
  .placement-header .eye { color: var(--cream-mute); margin-bottom: var(--sp-3); }

  .placements {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-4);
  }
  .pl-item {
    padding: var(--sp-5);
    border: 1px solid rgba(241,236,228,.12);
    border-radius: var(--r-md);
    background: rgba(241,236,228,.05);
    transition: background .2s ease, border-color .2s ease;
  }
  .pl-item:hover {
    background: rgba(241,236,228,.09);
    border-color: rgba(241,236,228,.2);
  }
  .pl-label {
    display: block;
    font-weight: 600;
    font-size: var(--type-sm);
    margin-bottom: var(--sp-1);
  }
  .pl-desc {
    display: block;
    font-size: var(--type-caption);
    color: var(--cream-dim);
    line-height: 1.5;
  }

  @media (max-width: 900px) {
    .whom-grid { grid-template-columns: 1fr; }
    .whom-card:last-child { grid-column: auto; }
    .placements { grid-template-columns: 1fr 1fr; }
  }
  @media (max-width: 640px) {
    .placements { grid-template-columns: 1fr; }
  }
}

/* ==============================================
   BIG NUMBER EDITORIAL STRIP
   ============================================== */
@layer sections {
  .numbers-strip {
    background: var(--ink);
    padding: var(--sp-10) 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .numbers-inner {
    display: flex;
    justify-content: center;
    gap: var(--sp-16);
    flex-wrap: wrap;
  }
  .number-item {
    text-align: center;
  }
  .number-val {
    font-family: Fraunces, serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 300;
    letter-spacing: -.04em;
    line-height: 1;
    color: var(--acc);
    margin-bottom: var(--sp-2);
  }
  .number-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--type-eyebrow);
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--cream-mute);
  }

  @media (max-width: 640px) {
    .numbers-inner { gap: var(--sp-8); }
  }
}

/* ==============================================
   LEAD FORM -- cream surface, contrast
   ============================================== */
@layer sections {
  .lead-section {
    background: var(--paper);
    color: var(--ink);
    padding: var(--sp-12) 0;
    position: relative;
  }
  .lead-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.03'/%3E%3C/svg%3E");
    pointer-events: none;
  }

  .lead-section .wrap { position: relative; z-index: 1; }

  .lead-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-10);
    align-items: start;
  }

  .lead-info .h2 { color: var(--ink); margin-bottom: var(--sp-4); }
  .lead-info .h2 em { color: var(--acc); }
  .lead-info .body-lg {
    color: rgba(20,17,13,.6);
    margin-bottom: var(--sp-6);
  }

  .tg-btn svg { flex-shrink: 0; }

  .lead-form {
    padding: var(--sp-6);
    border: 1px solid var(--line-dark);
    border-radius: var(--r-lg);
    background: #fff;
    box-shadow: var(--shadow-md);
  }
  .form-field {
    margin-bottom: var(--sp-5);
  }
  .form-field label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: rgba(20,17,13,.5);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: .06em;
    text-transform: uppercase;
    margin-bottom: var(--sp-2);
  }
  .form-field input,
  .form-field textarea {
    width: 100%;
    background: var(--paper);
    border: 1px solid var(--line-dark2);
    color: var(--ink);
    font-family: inherit;
    font-size: 0.9375rem;
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--r-md);
    outline: none;
    transition: border-color .2s;
    resize: vertical;
  }
  .form-field input::placeholder,
  .form-field textarea::placeholder {
    color: rgba(20,17,13,.35);
  }
  .form-field input:focus,
  .form-field textarea:focus {
    border-color: var(--acc);
    box-shadow: 0 0 0 3px var(--acc-soft);
  }
  .form-submit {
    width: 100%;
    justify-content: center;
  }
  .form-status {
    margin-top: var(--sp-4);
    font-size: var(--type-sm);
    text-align: center;
    min-height: 20px;
  }
  .form-status.ok { color: #2e7d32; }
  .form-status.err { color: #c62828; }

  @media (max-width: 780px) {
    .lead-grid {
      grid-template-columns: 1fr;
      gap: var(--sp-8);
    }
  }
}

/* ==============================================
   FOOTER -- dark, compact
   ============================================== */
@layer sections {
  .ftr {
    padding: var(--sp-8) 0 var(--sp-6);
    background: var(--footer-bg);
  }
  .ftr-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: var(--sp-8);
  }
  .ftr-tag {
    margin-top: var(--sp-4);
    font-size: var(--type-caption);
    max-width: 280px;
    color: var(--cream-mute);
  }
  .ftr h5 {
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--cream-mute);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    margin-bottom: var(--sp-4);
  }
  .ftr ul {
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
  }
  .ftr a {
    color: var(--cream-dim);
    font-size: var(--type-sm);
    transition: color .2s;
  }
  .ftr a:hover { color: var(--cream); }
  .ftr-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--sp-5);
    margin-top: var(--sp-8);
    padding-top: var(--sp-5);
    border-top: 1px solid var(--line);
    font-size: 11px;
    color: var(--cream-mute);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: .04em;
  }
  .ftr-bottom .ver { opacity: .6; }

  @media (max-width: 1024px) {
    .ftr-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
  }
  @media (max-width: 640px) {
    .ftr-grid { grid-template-columns: 1fr; }
    .ftr-bottom { flex-direction: column; align-items: flex-start; gap: var(--sp-3); }
  }
}

/* ==============================================
   SCROLL-DRIVEN REVEAL ANIMATION
   ============================================== */
@layer utilities {
  @media (prefers-reduced-motion: no-preference) {
    @keyframes reveal-up {
      from { opacity: 0; transform: translateY(24px); }
      to   { opacity: 1; transform: none; }
    }
    .reveal {
      animation: reveal-up linear both;
      animation-timeline: view();
      animation-range: entry 0% cover 20%;
    }

    /* stagger children with hierarchy */
    .stagger > * {
      animation: reveal-up linear both;
      animation-timeline: view();
      animation-range: entry 0% cover 25%;
    }
    .stagger > *:nth-child(1) { animation-range: entry 0% cover 20%; }
    .stagger > *:nth-child(2) { animation-range: entry 5% cover 25%; }
    .stagger > *:nth-child(3) { animation-range: entry 10% cover 30%; }
    .stagger > *:nth-child(4) { animation-range: entry 15% cover 35%; }
  }

  /* ACCESSIBILITY */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: .01ms !important;
      transition-duration: .01ms !important;
      scroll-behavior: auto !important;
    }
  }
  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--acc);
    outline-offset: 3px;
    border-radius: var(--r-sm);
  }
  input:focus-visible, textarea:focus-visible {
    outline-offset: 0;
  }
}