/* =========================================================
   The Companion — landing page
   Brand register: AGENCY / CASE-STUDY (samuelday.de family)
   Distinct from RI's cinematic-narrative homepage.
   Single accent: gold. Restraint over spectacle.
   ========================================================= */

:root {
  --ink:      #0a0806;
  --ink-soft: #1a1816;
  --paper:    #f6ecd7;
  --cream:    #fbf6e8;
  --rule:     #2a2520;
  --rule-soft:#3a3530;
  --gold:     #d4a017;
  --gold-hot: #e6b727;
  --gold-deep:#b8902f;
  --red:      #c8102e;       /* used sparingly for "in motion" badges */
  --muted:    #807672;

  --font-display: "Anton", "Oswald", Impact, "Arial Narrow Bold", sans-serif;
  --font-serif:   "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-body:    "Inter", "Open Sans", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;

  --measure:     65ch;
  --gutter:      clamp(20px, 5vw, 64px);
  --section-pad: clamp(80px, 14vw, 180px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--gold); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color .2s ease, color .2s ease; }
a:hover { color: var(--gold-hot); border-bottom-color: var(--gold-hot); }

.section-eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 84px);
  line-height: 0.95;
  letter-spacing: -0.005em;
  text-transform: uppercase;
  color: var(--paper);
  margin-bottom: 64px;
}
h2 em { font-family: var(--font-serif); font-style: italic; font-weight: 400; text-transform: none; letter-spacing: 0; color: var(--gold); }

h3 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.05;
  letter-spacing: 0.005em;
  text-transform: uppercase;
  color: var(--paper);
  margin-bottom: 16px;
}

p { margin-bottom: 1em; max-width: var(--measure); }

/* ============================================
   NAV
============================================ */
.nav {
  position: sticky;
  top: 0;
  background: rgba(10, 8, 6, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
  z-index: 100;
}
.nav__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav__brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--paper);
  border: 0;
  font-weight: 600;
}
.nav__brand:hover { color: var(--gold); }
.nav__brand-mark { color: var(--gold); font-size: 10px; }
.nav__brand-text { font-family: var(--font-display); font-size: 18px; letter-spacing: 0.05em; text-transform: uppercase; }
.nav__brand-sub { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); }
.nav__links { list-style: none; display: flex; gap: 28px; align-items: center; }
.nav__links a {
  color: var(--paper);
  border: 0;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  opacity: 0.7;
}
.nav__links a:hover { opacity: 1; color: var(--gold); }
.nav__cta {
  background: var(--gold);
  color: var(--ink) !important;
  padding: 8px 16px;
  font-weight: 600;
  letter-spacing: 0.05em;
  opacity: 1 !important;
}
.nav__cta:hover { background: var(--gold-hot); color: var(--ink) !important; }
@media (max-width: 768px) {
  .nav__brand-sub { display: none; }
  .nav__links { gap: 14px; }
  .nav__links a:not(.nav__cta) { display: none; }
}

/* ============================================
   HERO
============================================ */
.hero {
  padding: clamp(100px, 18vw, 200px) var(--gutter) clamp(80px, 12vw, 140px);
  border-bottom: 1px solid var(--rule);
}
.hero__inner { max-width: 1100px; margin: 0 auto; }
.hero__eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 32px;
}
.hero__title {
  font-family: var(--font-display);
  font-size: clamp(48px, 9vw, 124px);
  line-height: 0.92;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--paper);
  margin-bottom: 40px;
}
.hero__title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--gold);
}
.hero__sub {
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.55;
  color: var(--paper);
  max-width: 720px;
  margin-bottom: 56px;
  opacity: 0.92;
}
.hero__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
  padding-top: 40px;
  border-top: 1px solid var(--rule);
  max-width: 880px;
}
.hero__meta div {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.6;
}
.hero__meta b {
  color: var(--gold);
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 400;
  letter-spacing: 0.02em;
  display: block;
  margin-bottom: 4px;
}
.hero__scroll-cue {
  display: inline-block;
  margin-top: 64px;
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  border: 0;
  transition: color .3s, transform .3s;
}
.hero__scroll-cue:hover { color: var(--gold); transform: translateY(2px); }

/* ============================================
   CASES — the Samuel Day register
============================================ */
.cases {
  padding: var(--section-pad) var(--gutter);
  max-width: 1400px;
  margin: 0 auto;
}
.cases__heading { max-width: 880px; margin-bottom: 80px; }

.case {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px clamp(32px, 6vw, 80px);
  padding: clamp(60px, 10vw, 120px) 0;
  border-top: 1px solid var(--rule);
  align-items: start;
}
@media (min-width: 900px) {
  .case { grid-template-columns: 80px 1.1fr 1fr; }
}
.case:last-child { border-bottom: 1px solid var(--rule); }
.case__num {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--gold);
  letter-spacing: 0.05em;
}

.case__preview {
  position: relative;
}
.case__preview-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--ink-soft);
  border: 1px solid var(--rule);
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease;
}
.case__preview-frame:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
}
.case__preview-frame iframe {
  position: absolute;
  top: 0; left: 0;
  width: 250%;
  height: 250%;
  border: 0;
  transform: scale(0.4);
  transform-origin: top left;
  pointer-events: none;
}
.case__preview-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  background: linear-gradient(to top, rgba(10,8,6,0.95), transparent);
  pointer-events: none;
}
.case__preview-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
}

.case__preview--placeholder { display: flex; }
.case__placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--ink-soft);
  border: 1px dashed var(--rule-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 32px;
  text-align: center;
  transition: border-color .3s ease;
}
.case__placeholder:hover { border-color: var(--gold); }
.case__placeholder-mark {
  font-family: var(--font-display);
  font-size: 64px;
  color: var(--gold);
  line-height: 1;
}
.case__placeholder-label {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--paper);
}
.case__placeholder-sub {
  font-size: 13px;
  color: var(--muted);
  max-width: 280px;
  line-height: 1.5;
}

.case__body { display: flex; flex-direction: column; gap: 14px; }
.case__status {
  display: inline-block;
  align-self: flex-start;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid currentColor;
}
.case__status--shipped { color: var(--gold); }
.case__status--in-motion { color: var(--red); border-color: var(--red); }
.case__status--invitation { color: var(--paper); border-color: var(--rule-soft); }
.case__client {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 15px;
  color: var(--gold);
  margin-bottom: 8px;
}
.case__body p { color: var(--paper); opacity: 0.88; max-width: 56ch; }
.case__features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.case__features span {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 10px;
  border: 1px solid var(--rule-soft);
  color: var(--muted);
}
.case__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 12px 22px;
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  align-self: flex-start;
  transition: background .2s ease, color .2s ease;
}
.case__cta:hover { background: var(--gold); color: var(--ink); }
.case__cta--inactive {
  border-color: var(--rule-soft);
  color: var(--muted);
  cursor: default;
}
.case__cta--inactive:hover { background: transparent; color: var(--muted); }

/* ============================================
   WHAT IS IT
============================================ */
.what {
  padding: var(--section-pad) var(--gutter);
  background: var(--ink-soft);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.what__inner { max-width: 1280px; margin: 0 auto; }
.what__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
}
@media (min-width: 900px) {
  .what__grid { grid-template-columns: 1.1fr 1fr; gap: 80px; }
}
.what__col p { color: var(--paper); opacity: 0.88; }
.what__lead {
  font-size: clamp(20px, 2vw, 24px);
  line-height: 1.45;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gold) !important;
  opacity: 1 !important;
  margin-bottom: 24px;
}
.what__features-heading {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
}
.what__features {
  list-style: none;
  counter-reset: feat;
}
.what__features li {
  position: relative;
  padding: 16px 0 16px 56px;
  border-bottom: 1px solid var(--rule);
  counter-increment: feat;
}
.what__features li:last-child { border-bottom: 0; }
.what__features li::before {
  content: counter(feat, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 18px;
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--gold);
  letter-spacing: 0.05em;
}
.what__features strong { color: var(--gold); font-weight: 600; }

/* ============================================
   PRICING
============================================ */
.pricing { padding: var(--section-pad) var(--gutter); max-width: 1400px; margin: 0 auto; }
.pricing__inner { max-width: 1280px; margin: 0 auto; }
.pricing__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 64px;
}
@media (min-width: 700px) { .pricing__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .pricing__grid { grid-template-columns: repeat(5, 1fr); gap: 16px; } }

.tier {
  position: relative;
  padding: 32px 24px;
  border: 1px solid var(--rule);
  background: var(--ink-soft);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color .2s ease, transform .2s ease;
}
.tier:hover { border-color: var(--gold); transform: translateY(-2px); }
.tier--featured {
  border-color: var(--gold);
  background: linear-gradient(180deg, rgba(212, 160, 23, 0.06), var(--ink-soft));
}
.tier__badge {
  position: absolute;
  top: -10px;
  left: 16px;
  background: var(--gold);
  color: var(--ink);
  padding: 3px 10px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.tier__name {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--paper);
}
.tier__price {
  font-family: var(--font-display);
  font-size: 30px;
  color: var(--gold);
  letter-spacing: 0;
  line-height: 1;
}
.tier ul { list-style: none; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.tier li {
  font-size: 13px;
  color: var(--paper);
  opacity: 0.85;
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}
.tier li::before {
  content: '·';
  position: absolute;
  left: 0;
  top: -2px;
  color: var(--gold);
  font-weight: 700;
}
.tier__for {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 13px;
  color: var(--gold);
  padding-top: 12px;
  border-top: 1px solid var(--rule);
  line-height: 1.4;
}

.pricing__addons {
  margin-top: 80px;
  padding: 40px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.pricing__addons h3 {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}
.pricing__addons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px 32px;
}
.pricing__addons-grid div {
  font-size: 14px;
  color: var(--paper);
  opacity: 0.85;
}
.pricing__addons-grid b {
  display: inline-block;
  min-width: 100px;
  color: var(--gold);
  font-weight: 600;
}

.pricing__maintenance {
  margin-top: 32px;
  padding: 24px;
  background: var(--ink-soft);
  border-left: 3px solid var(--gold);
  font-size: 14px;
  color: var(--paper);
  opacity: 0.92;
}
.pricing__maintenance strong { color: var(--gold); }

/* ============================================
   POSITIONING
============================================ */
.positioning {
  padding: var(--section-pad) var(--gutter);
  background: var(--ink-soft);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.positioning__inner { max-width: 880px; margin: 0 auto; }
.positioning__lead {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(20px, 2.2vw, 26px);
  line-height: 1.5;
  color: var(--gold);
  margin-bottom: 32px;
}
.positioning p { color: var(--paper); opacity: 0.92; font-size: 17px; line-height: 1.65; }
.positioning__attrib {
  margin-top: 32px;
  font-size: 14px;
  color: var(--muted);
  font-style: italic;
}
.positioning__attrib em { color: var(--gold); }

/* ============================================
   INTAKE
============================================ */
.intake { padding: var(--section-pad) var(--gutter); max-width: 1400px; margin: 0 auto; }
.intake__inner { max-width: 880px; margin: 0 auto; }
.intake__lead {
  font-size: clamp(18px, 1.6vw, 20px);
  color: var(--paper);
  opacity: 0.88;
  margin-bottom: 40px;
}

.intake__form-slot { padding: 40px; background: var(--ink-soft); border: 1px solid var(--rule); border-left: 3px solid var(--gold); }
.intake__form-placeholder p { color: var(--paper); opacity: 0.92; max-width: 60ch; }
.intake__form-placeholder a { word-break: break-all; }

.intake__questions {
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--ink);
  border: 1px solid var(--rule);
}
.intake__questions summary {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  cursor: pointer;
  padding: 8px 0;
}
.intake__questions summary::marker { color: var(--gold); }
.intake__questions ol {
  margin: 16px 0 8px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.intake__questions li {
  font-size: 14px;
  color: var(--paper);
  opacity: 0.85;
  line-height: 1.5;
}

/* ============================================
   FOOTER
============================================ */
.footer {
  background: var(--ink);
  border-top: 1px solid var(--rule);
  padding: 80px var(--gutter) 0;
}
.footer__inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--rule);
}
@media (min-width: 700px) { .footer__inner { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .footer__inner { grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 60px; } }
.footer__col p { font-size: 14px; color: var(--paper); opacity: 0.75; line-height: 1.55; max-width: 32ch; }
.footer__col h4 { font-family: var(--font-body); font-size: 12px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); margin-bottom: 14px; }
.footer__brand { display: flex; align-items: baseline; gap: 10px; margin-bottom: 16px; font-family: var(--font-display); font-size: 20px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--paper); }
.footer__brand-mark { color: var(--gold); font-size: 12px; }
.footer__bar {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.footer__bar span { letter-spacing: 0.1em; }


/* ============================================
   MOTION — entrance reveals, hero composition,
   case stagger, scroll-linked accents.
   All respect prefers-reduced-motion (motion.js
   sets is-revealed/is-in immediately when reduced).
============================================ */

/* ---------- Generic reveal-on-scroll ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.7, 0.2, 1),
              transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: opacity, transform;
}
[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Hero composition (per-element entrance) ---------- */
.hero [data-hero-step] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 1.1s cubic-bezier(0.2, 0.7, 0.2, 1),
              transform 1.1s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.hero [data-hero-step].is-in {
  opacity: 1;
  transform: translateY(0);
}

/* Hero title — line-by-line clip-mask reveal feel */
.hero__line {
  display: block;
  overflow: hidden;
  line-height: 0.95;
}
.hero__line em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--gold);
}

/* Hero meta items stagger in too */
.hero__meta div {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.hero__meta.is-in div { opacity: 1; transform: translateY(0); }
.hero__meta.is-in div[data-hero-stat="0"] { transition-delay: 0ms; }
.hero__meta.is-in div[data-hero-stat="1"] { transition-delay: 100ms; }
.hero__meta.is-in div[data-hero-stat="2"] { transition-delay: 200ms; }
.hero__meta.is-in div[data-hero-stat="3"] { transition-delay: 300ms; }

/* Subtle pulse on the scroll cue */
.hero__scroll-cue.is-in { animation: scrollCue 2.4s ease-in-out 1.6s infinite; }
@keyframes scrollCue {
  0%, 100% { transform: translateY(0); opacity: 0.7; }
  50%      { transform: translateY(6px); opacity: 1; }
}

/* ---------- Case stagger (parent .case → internal pieces) ---------- */
.case .case__num,
.case .case__preview,
.case .case__body {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 1.1s cubic-bezier(0.2, 0.7, 0.2, 1),
              transform 1.1s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.case.is-revealed .case__num     { opacity: 1; transform: translateY(0); transition-delay: 0ms; }
.case.is-revealed .case__preview { opacity: 1; transform: translateY(0); transition-delay: 140ms; }
.case.is-revealed .case__body    { opacity: 1; transform: translateY(0); transition-delay: 280ms; }

/* Case body inner stagger — pills, status, CTA */
.case .case__status,
.case .case__client,
.case .case__features span,
.case .case__cta {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.case.is-revealed .case__status   { opacity: 1; transform: translateY(0); transition-delay: 320ms; }
.case.is-revealed .case__client   { opacity: 1; transform: translateY(0); transition-delay: 380ms; }
.case.is-revealed .case__features span { opacity: 1; transform: translateY(0); }
.case.is-revealed .case__features span:nth-child(1) { transition-delay: 480ms; }
.case.is-revealed .case__features span:nth-child(2) { transition-delay: 540ms; }
.case.is-revealed .case__features span:nth-child(3) { transition-delay: 600ms; }
.case.is-revealed .case__features span:nth-child(4) { transition-delay: 660ms; }
.case.is-revealed .case__cta      { opacity: 1; transform: translateY(0); transition-delay: 760ms; }

/* ---------- Pricing tier sequential reveal ---------- */
.tier {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease, border-color .2s ease;
}
.tier.is-revealed { opacity: 1; transform: translateY(0); }

/* Featured tier — subtle gold pulse on the badge */
.tier--featured.is-revealed .tier__badge {
  animation: badgePulse 3.2s ease-in-out 1.2s infinite;
}
@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(212, 160, 23, 0); }
  50%      { box-shadow: 0 0 0 8px rgba(212, 160, 23, 0.18); }
}

/* ---------- Case preview — alive on hover ---------- */
/* iframe content scrolls via motion.js postMessage; here we lift + soften shadow */
.case__preview-frame {
  transition: transform .45s cubic-bezier(0.2, 0.7, 0.2, 1),
              border-color .35s ease,
              box-shadow .45s ease;
  will-change: transform;
}
.case__preview-frame:hover {
  transform: translateY(-6px);
  border-color: var(--gold);
  box-shadow: 0 18px 60px -20px rgba(212, 160, 23, 0.3),
              0 4px 14px rgba(0, 0, 0, 0.4);
}
.case__preview-frame iframe {
  transition: transform .35s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.case__preview-frame:hover iframe {
  transform: scale(0.42);  /* slight zoom-in on hover (was 0.4) */
}

/* Live label slides up + brightens on hover */
.case__preview-overlay {
  transition: padding .3s ease, background .3s ease;
}
.case__preview-frame:hover .case__preview-overlay {
  padding-bottom: 18px;
  background: linear-gradient(to top, rgba(212, 160, 23, 0.18), rgba(10, 8, 6, 0.95) 60%, transparent);
}
.case__preview-frame:hover .case__preview-label {
  color: var(--gold-hot);
}

/* ---------- Placeholder card — gentle attention pulse ---------- */
.case__placeholder { transition: border-color .35s ease, transform .45s ease; }
.case__placeholder:hover { transform: translateY(-6px); }
.case__placeholder-mark {
  transition: transform .5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.case__placeholder:hover .case__placeholder-mark {
  transform: rotate(45deg) scale(1.1);
  color: var(--gold-hot);
}

/* ---------- Scroll-linked hairline rule (the section-eyebrow gold bar) ---------- */
.section-eyebrow {
  position: relative;
  padding-left: 48px;
}
.section-eyebrow::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 1.2s cubic-bezier(0.2, 0.7, 0.2, 1) 0.15s;
}
[data-reveal].is-revealed .section-eyebrow::before {
  width: 32px;
}

/* ---------- Numbered features — slide in from left ---------- */
.what__features li {
  transform: translateX(-24px);
}
.what__features li.is-revealed {
  transform: translateX(0);
}

/* ---------- Reduced motion — restore everything to visible immediately ---------- */
@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  .hero [data-hero-step],
  .case .case__num, .case .case__preview, .case .case__body,
  .case .case__status, .case .case__client, .case .case__features span, .case .case__cta,
  .tier,
  .what__features li {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .hero__scroll-cue.is-in,
  .tier--featured.is-revealed .tier__badge {
    animation: none !important;
  }
  .section-eyebrow::before { width: 32px !important; transition: none !important; }
}

/* =========================================================
   Architecture diagram — pedagogy via composition.
   Each layer enters in build order so the architecture is
   felt as it is described. Stacked-no-gap reads as a single
   composed product, not a feature list.
   ========================================================= */
.archdiag {
  margin: clamp(40px, 6vw, 80px) auto clamp(56px, 8vw, 96px);
  max-width: 760px;
  padding: 0;
}
.archdiag__stack {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
  background: var(--ink-soft);
  position: relative;
}
.archdiag__layer {
  display: grid;
  grid-template-columns: clamp(56px, 8vw, 80px) 1fr;
  gap: clamp(14px, 2vw, 24px);
  align-items: baseline;
  padding: clamp(20px, 3vw, 28px) clamp(20px, 3vw, 32px);
  border-top: 1px solid var(--rule);
  position: relative;
  /* entrance state — overridden when .is-built is added by motion.js */
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.55s ease-out, transform 0.55s ease-out;
}
.archdiag__layer:first-child { border-top: 0; }
.archdiag__layer.is-built {
  opacity: 1;
  transform: translateY(0);
}

/* Layer-specific accents — each layer's left numeric column gets a tone
   that reads as a vertical band, reinforcing "this is composed, not listed" */
.archdiag__layer::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--rule);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.7s ease-out 0.1s;
}
.archdiag__layer.is-built::before { transform: scaleY(1); }
.archdiag__layer--corpus::before { background: var(--gold); }
.archdiag__layer--engine::before { background: var(--paper); }
.archdiag__layer--brand::before  { background: var(--gold-deep); }
.archdiag__layer--lang::before   { background: var(--red); }

.archdiag__num {
  font-family: var(--font-display, 'Anton', sans-serif);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 400;
  color: var(--gold);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  padding-top: 4px;
}
.archdiag__layer--engine .archdiag__num { color: var(--paper); }
.archdiag__layer--brand  .archdiag__num { color: var(--gold-deep); }
.archdiag__layer--lang   .archdiag__num { color: var(--red); }

.archdiag__body { min-width: 0; }
.archdiag__title {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0 0 6px;
  color: var(--paper);
}
.archdiag__desc {
  font-size: clamp(14px, 1.6vw, 15px);
  line-height: 1.55;
  color: var(--muted);
  margin: 0;
  max-width: 56ch;
}
.archdiag__desc em {
  font-style: italic;
  color: var(--paper);
  opacity: 0.92;
}

.archdiag__caption {
  margin: 18px 0 0;
  font-family: var(--font-serif, 'Cormorant Garamond', serif);
  font-style: italic;
  font-size: clamp(15px, 1.8vw, 18px);
  color: var(--muted);
  text-align: center;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.55s ease-out, transform 0.55s ease-out;
}
.archdiag__caption.is-built {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced-motion fallback — show fully composed immediately */
@media (prefers-reduced-motion: reduce) {
  .archdiag__layer,
  .archdiag__caption {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .archdiag__layer::before {
    transform: scaleY(1) !important;
    transition: none !important;
  }
}

/* Mobile — collapse the numeric column slightly */
@media (max-width: 600px) {
  .archdiag__layer { grid-template-columns: 44px 1fr; padding: 18px 18px 18px 22px; }
  .archdiag__num { font-size: 22px; padding-top: 2px; }
}