/* ============================================================
   Use-case pages v2 — shared primitives (buttons, container,
   hero, image-section layout, moments, control strip, final CTA,
   product-shot image helper). Page content stays in each HTML file
   with vertical-prefixed section ids. Spec §17–§44.
   ============================================================ */

.use-case-page { background: #FFFFFF; }
.use-case-page * { box-sizing: border-box; }

/* ---- Buttons (shared) ---- */
.uc-btn-primary,
.uc-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-weight: 700;
  text-decoration: none;
  border-radius: 12px;
  transition: transform 160ms cubic-bezier(0.2,0.8,0.2,1), background-color 160ms ease, border-color 160ms ease;
}
.uc-btn-primary {
  background: #181818;
  color: #FFFFFF;
  padding: 15px 24px;
  font-size: 15px;
  border: 1px solid #181818;
}
.uc-btn-primary:hover { transform: translateY(-1px); background: #000000; }
.uc-btn-secondary {
  background: #FFFFFF;
  color: #181818;
  padding: 15px 22px;
  font-size: 15px;
  border: 1px solid #E6E6EC;
}
.uc-btn-secondary:hover { transform: translateY(-1px); border-color: #181818; }
.uc-btn-primary:focus-visible,
.uc-btn-secondary:focus-visible { outline: 2px solid #181818; outline-offset: 3px; }

/* ============================================================
   HERO (§18 desktop / §19 mobile) — no image
   ============================================================ */
.uc-hero {
  background: #FFFFFF;
  border-bottom: 1px solid #E6E6EC;
}
.uc-hero-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 76px 48px 72px;
}
.uc-hero-content { max-width: 1040px; }
.uc-hero-eyebrow {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 12px;
  line-height: 18px;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: #6C6B6E;
  margin: 0 0 18px;
  text-transform: uppercase;
}
.uc-hero h1 {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: clamp(64px, 5.5vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.05em;
  font-weight: 800;
  color: #181818;
  margin: 0;
  text-wrap: balance;
}
.uc-hero h1 span { display: block; }
.uc-hero-subtitle {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 20px;
  line-height: 30px;
  color: #55534E;
  max-width: 780px;
  margin: 26px 0 0;
}
.uc-hero-channel {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 14px;
  line-height: 21px;
  color: #6C6B6E;
  max-width: 760px;
  margin: 13px 0 0;
}
.uc-hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 29px;
  flex-wrap: wrap;
}
.uc-hero-micro {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 13px;
  line-height: 19px;
  color: #6C6B6E;
  margin: 16px 0 0;
}
/* Situation strip (§18) — no image */
.uc-situation {
  margin-top: 48px;
  padding: 20px 24px;
  background: #F5F5F5;
  border-top: 1px solid #E6E6EC;
  border-bottom: 1px solid #E6E6EC;
  display: grid;
  grid-template-columns: 180px minmax(0,1fr) 220px;
  gap: 24px;
  align-items: center;
}
.uc-situation-label {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: #6C6B6E;
  margin: 0;
}
.uc-situation-meta {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 12px;
  color: #8A8A8A;
  margin: 4px 0 0;
}
.uc-situation-main {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 17px;
  line-height: 25px;
  font-weight: 600;
  color: #181818;
  margin: 0;
}
.uc-situation-right {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: #181818;
  margin: 0;
  text-align: right;
}
.uc-situation-sub {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 12px;
  color: #6C6B6E;
  margin: 4px 0 0;
  text-align: right;
}

/* ============================================================
   IMAGE SECTIONS (§29 desktop, §30 backgrounds) — copy left, image right
   ============================================================ */
.uc-section {
  padding: 104px 48px 112px;
  background: #FFFFFF;
}
.uc-section--dark { background: #181818; }
.uc-section--panel { background: #F1F0EF; }
.uc-section-container {
  max-width: 1240px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: 64px;
  align-items: center;
}
.uc-copy { max-width: 430px; }
.uc-eyebrow {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 12px;
  line-height: 18px;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: #6C6B6E;
  margin: 0 0 14px;
  text-transform: uppercase;
}
.uc-h2 {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: clamp(46px, 4vw, 62px);
  line-height: 1.02;
  letter-spacing: -0.044em;
  font-weight: 800;
  color: #181818;
  margin: 0;
  text-wrap: balance;
}
.uc-sub {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 18px;
  line-height: 28px;
  color: #55534E;
  margin: 18px 0 0;
}
.uc-section--dark .uc-eyebrow { color: rgba(255,255,255,0.48); }
.uc-section--dark .uc-h2 { color: #FFFFFF; }
.uc-section--dark .uc-sub { color: rgba(255,255,255,0.66); }

/* Image stage — allowed wrapper only (§39). No frame. */
.use-case-shot-stage {
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: visible;
  background: transparent;
  border: 0;
  box-shadow: none;
  border-radius: 0;
  padding: 0;
}
/* Product shot image (§17) — NO card/border/shadow/radius/padding */
.use-case-product-shot {
  display: block;
  width: 100%;
  max-width: 940px;
  margin: 0;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  padding: 0 !important;
  overflow: visible !important;
}
.use-case-product-shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  padding: 0 !important;
  transform: none !important;
  filter: none !important;
}

/* ============================================================
   MOMENTS LEDGER (§33) — editorial rows, no cards/icons/images
   ============================================================ */
.uc-moments {
  background: #FFFFFF;
  border-top: 1px solid #E6E6EC;
  border-bottom: 1px solid #E6E6EC;
  padding: 104px 48px 112px;
}
.uc-moments-container { max-width: 1240px; margin: 0 auto; }
.uc-moments-header { max-width: 820px; }
.uc-moments-rows {
  margin-top: 54px;
  border-top: 1px solid rgba(24,24,24,0.16);
}
.uc-moment-row {
  display: grid;
  grid-template-columns: 160px 360px minmax(0,1fr);
  gap: 32px;
  padding: 30px 0;
  border-bottom: 1px solid rgba(24,24,24,0.16);
  align-items: start;
}
.uc-moment-label {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: #6C6B6E;
  margin: 0;
}
.uc-moment-title {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 22px;
  line-height: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #181818;
  margin: 0;
}
.uc-moment-body {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 24px;
  color: #55534E;
  margin: 0;
}

/* ============================================================
   CONTROL STRIP (§37) — 3 columns, dividers, no cards
   ============================================================ */
.uc-control {
  background: #F1F0EF;
  padding: 56px 48px;
}
.uc-control-container {
  max-width: 1240px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.uc-control-item { padding: 4px 32px; border-left: 1px solid rgba(24,24,24,0.14); }
.uc-control-item:first-child { border-left: 0; padding-left: 0; }
.uc-control-title {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 17px;
  font-weight: 800;
  color: #181818;
  margin: 0 0 8px;
}
.uc-control-body {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 15px;
  line-height: 22px;
  color: #55534E;
  margin: 0;
}

/* ============================================================
   FINAL CTA (§38) — dark, centered
   ============================================================ */
.uc-final { background: #181818; color: #FFFFFF; }
.uc-final-container {
  max-width: 980px;
  margin: 0 auto;
  padding: 96px 48px 104px;
  text-align: center;
}
.uc-final-eyebrow {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin: 0 0 20px;
}
.uc-final h2 {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: clamp(42px, 4.4vw, 60px);
  line-height: 1.03;
  letter-spacing: -0.04em;
  font-weight: 800;
  color: #FFFFFF;
  margin: 0;
  text-wrap: balance;
}
.uc-final-subtitle {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: 19px;
  line-height: 29px;
  color: rgba(255,255,255,0.72);
  max-width: 640px;
  margin: 22px auto 0;
}
.uc-final-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 34px;
  flex-wrap: wrap;
}
.uc-final .uc-btn-secondary { background: transparent; color: #FFFFFF; border-color: rgba(255,255,255,0.28); }
.uc-final .uc-btn-secondary:hover { border-color: #FFFFFF; }

/* ============================================================
   TABLET (§32) — 768–1099px: stack, desktop PNG
   ============================================================ */
@media (min-width: 768px) and (max-width: 1099px) {
  .uc-hero-container { padding: 64px 32px 60px; }
  .uc-section { padding: 80px 32px 96px; }
  .uc-section-container { display: block; }
  .uc-copy { max-width: 720px; }
  .uc-section .use-case-shot-stage { margin-top: 40px; }
  .use-case-product-shot { width: min(100%, 760px); margin: 0 auto; }
  .uc-moments { padding: 80px 32px 96px; }
  .uc-control { padding: 48px 32px; }
  .uc-final-container { padding: 80px 32px 88px; }
}

/* ============================================================
   MOBILE (§19 hero, §31 sections) — max 767px
   ============================================================ */
@media (max-width: 767px) {
  .uc-hero-container { padding: 48px 20px 58px; }
  .uc-hero h1 { font-size: clamp(42px, 10.8vw, 49px); line-height: 1.01; letter-spacing: -0.045em; }
  .uc-hero-subtitle { font-size: 17px; line-height: 26px; margin-top: 20px; }
  .uc-hero-channel { font-size: 13px; line-height: 20px; }
  .uc-hero-actions { display: grid; grid-template-columns: 1fr; gap: 9px; margin-top: 25px; }
  .uc-hero-actions .uc-btn-primary { width: 100%; height: 52px; padding: 0; }
  .uc-hero-actions .uc-btn-secondary { width: 100%; height: 46px; padding: 0; justify-content: center; }
  .uc-situation {
    display: block;
    margin-top: 34px;
    padding: 17px 0;
    background: transparent;
    border-top: 1px solid #E6E6EC;
    border-bottom: 1px solid #E6E6EC;
  }
  .uc-situation-right, .uc-situation-sub { text-align: left; }
  .uc-situation-main { margin-top: 8px; font-size: 16px; line-height: 23px; }
  .uc-situation-right { margin-top: 12px; }

  .uc-section { padding: 64px 20px 80px; }
  .uc-section-container { display: block; }
  .uc-copy { max-width: none; }
  .uc-h2 { font-size: 40px; line-height: 42px; letter-spacing: -0.042em; }
  .uc-sub { font-size: 16px; line-height: 24px; margin-top: 16px; }
  .use-case-shot-stage { margin-top: 28px; }
  .use-case-product-shot { width: min(100%, 350px); max-width: 350px; margin: 0 auto; }

  .uc-moments { padding: 64px 20px 80px; }
  .uc-moments-rows { margin-top: 32px; }
  .uc-moment-row { display: block; padding: 26px 0; }
  .uc-moment-title { margin-top: 8px; font-size: 20px; line-height: 26px; }
  .uc-moment-body { margin-top: 8px; }

  .uc-control { padding: 44px 20px; }
  .uc-control-container { display: block; }
  .uc-control-item { padding: 22px 0; border-left: 0; border-top: 1px solid rgba(24,24,24,0.14); }
  .uc-control-item:first-child { border-top: 0; padding-top: 0; }

  .uc-final-container { padding: 72px 20px 80px; }
  .uc-final-actions { display: grid; grid-template-columns: 1fr; gap: 10px; }
  .uc-final-actions .uc-btn-primary, .uc-final-actions .uc-btn-secondary { width: 100%; height: 52px; padding: 0; }
}

/* ============================================================
   REDUCED MOTION (§42)
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .use-case-page *,
  .use-case-page *::before,
  .use-case-page *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}