/* ============================================================
   VINOVE — AI Page
   Page spine: "AI is the next test."

   §1  Hero          — dark ink, terra type, glow
   §2  The Argument  — paper, editorial alternating rows
   §3  How Vinove    — dark ink, editorial numbered list
   §4  Agentra Card  — graphite, magenta glow, ghost A
   §5  AI Meaning    — terra-tint, editorial prose
   §6  CTA Split     — dark ink, two routing doors
   ============================================================ */


/* ╔═══════════════════════════════════════════════════════╗
   §1  HERO
   ╚═══════════════════════════════════════════════════════╝ */

#ai-hero {
  min-height: 100svh;
  background: var(--ink);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

/* Background image */
.page-hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

/* Overlay */
.page-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(160deg, rgba(9,12,21,.9) 0%, rgba(9,12,21,.6) 45%, rgba(9,12,21,.82) 100%),
    linear-gradient(to right, rgba(9,12,21,.6) 0%, transparent 65%);
}

/* Terra glow */
.ai-hero-glow {
  position: absolute;
  bottom: -200px;
  left: -100px;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200,85,61,.12) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

/* Subtle grain */
.ai-hero-grain {
  position: absolute; inset: 0; z-index: 1;
  pointer-events: none;
  opacity: .035;
  background-image: 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='0.82' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px;
}

.ai-hero-inner {
  position: relative; z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: calc(var(--max) + var(--gutter) * 2);
  width: 100%;
  margin: 0 auto;
  padding: calc(var(--nav-h) + clamp(3rem,7vw,7rem)) var(--gutter) clamp(4rem,8vw,8rem);
}

.ai-hero-hl {
  font-size: clamp(56px, 9vw, 120px);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin: 0 0 clamp(1.5rem, 3vw, 2.5rem);
  max-width: 18ch;
}

.ai-hero-hl-white {
  display: block;
  color: #fff;
}

.ai-hero-hl-terra {
  display: block;
  color: var(--terra);
}

.ai-hero-sub {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  line-height: 1.65;
  color: var(--ink-text-body);
  max-width: 56ch;
  margin: 0 0 clamp(2rem, 4vw, 3rem);
}

.ai-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}


/* ╔═══════════════════════════════════════════════════════╗
   §2  THREE-ERA ARGUMENT PANELS
   ╚═══════════════════════════════════════════════════════╝ */

#ai-argument {
  /* No top-level padding — each panel handles its own */
}

.era-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(5rem, 10vw, 9rem) var(--gutter);
}

.era-panel--dark {
  background: #0D1525;
}

.era-panel--light {
  background: var(--paper);
}

.era-panel--ai {
  background: #0A0E18;
}

/* Giant background era label */
.era-bg-label {
  position: absolute;
  top: 50%;
  right: -2%;
  transform: translateY(-50%);
  font-family: var(--font);
  font-size: clamp(100px, 18vw, 240px);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.era-panel--dark .era-bg-label,
.era-panel--ai .era-bg-label {
  color: rgba(255,255,255,.04);
}
.era-panel--light .era-bg-label {
  color: rgba(14,19,32,.04);
}

.era-panel-inner {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
}

/* Meta: tag + years */
.era-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.era-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--terra);
}

.era-years {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .08em;
}
.era-panel--dark .era-years,
.era-panel--ai .era-years { color: rgba(255,255,255,.35); }
.era-panel--light .era-years { color: var(--text-muted); }

/* The big statement */
.era-statement {
  font-family: var(--font);
  font-size: clamp(32px, 5.5vw, 72px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  max-width: 22ch;
}
.era-panel--dark .era-statement,
.era-panel--ai .era-statement { color: #fff; }
.era-panel--light .era-statement { color: var(--text-strong); }
.era-statement--terra { color: var(--terra) !important; }

/* Two-column questions grid */
.era-questions {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  align-items: stretch;
  border-radius: var(--r-xl, 16px);
  overflow: hidden;
  margin-bottom: 2rem;
}

.era-q {
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.era-q--wrong {
  border-right: none;
}
.era-panel--dark .era-q--wrong,
.era-panel--ai .era-q--wrong {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-right: none;
  border-radius: var(--r-xl, 16px) 0 0 var(--r-xl, 16px);
}
.era-panel--light .era-q--wrong {
  background: var(--surface-2, #f0f1f4);
  border: 1px solid var(--border-subtle, rgba(14,19,32,.1));
  border-right: none;
  border-radius: var(--r-xl, 16px) 0 0 var(--r-xl, 16px);
}

.era-q--right {
  border-left: none;
}
.era-panel--dark .era-q--right,
.era-panel--ai .era-q--right {
  background: rgba(200,85,61,.08);
  border: 1px solid rgba(200,85,61,.2);
  border-left: none;
  border-radius: 0 var(--r-xl, 16px) var(--r-xl, 16px) 0;
}
.era-panel--light .era-q--right {
  background: var(--terra-tint, #F7E9E4);
  border: 1px solid rgba(200,85,61,.2);
  border-left: none;
  border-radius: 0 var(--r-xl, 16px) var(--r-xl, 16px) 0;
}

.era-q-divider {
  width: 1px;
  background: rgba(200,85,61,.3);
  flex-shrink: 0;
}

.era-q-label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin-bottom: .875rem;
}
.era-panel--dark .era-q--wrong .era-q-label,
.era-panel--ai .era-q--wrong .era-q-label { color: rgba(255,255,255,.3); }
.era-panel--light .era-q--wrong .era-q-label { color: var(--text-muted); }
.era-q--right .era-q-label { color: var(--terra); }

.era-q-text {
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.45;
  font-style: italic;
  margin: 0;
}
.era-panel--dark .era-q--wrong .era-q-text,
.era-panel--ai .era-q--wrong .era-q-text { color: rgba(255,255,255,.45); }
.era-panel--light .era-q--wrong .era-q-text { color: var(--text-muted); }
.era-panel--dark .era-q--right .era-q-text,
.era-panel--ai .era-q--right .era-q-text { color: rgba(255,255,255,.85); }
.era-panel--light .era-q--right .era-q-text { color: var(--text-strong); }

/* Body text */
.era-body {
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.75;
  max-width: 64ch;
  margin: 0;
}
.era-panel--dark .era-body,
.era-panel--ai .era-body { color: rgba(255,255,255,.58); }
.era-panel--light .era-body { color: var(--text-body); }

/* Conclusion strip */
.era-conclusion {
  background: var(--terra);
  padding: clamp(3rem, 6vw, 5rem) var(--gutter);
  text-align: center;
}
.era-conclusion-text {
  font-family: var(--font);
  font-size: clamp(20px, 3vw, 36px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.35;
  color: #fff;
  max-width: 52ch;
  margin: 0 auto;
}

/* Mobile */
@media (max-width: 640px) {
  .era-questions {
    grid-template-columns: 1fr;
  }
  .era-q-divider { width: 100%; height: 1px; }
  .era-panel--dark .era-q--wrong,
  .era-panel--ai .era-q--wrong {
    border-radius: var(--r-xl, 16px) var(--r-xl, 16px) 0 0;
    border-right: 1px solid rgba(255,255,255,.08);
    border-bottom: none;
  }
  .era-panel--light .era-q--wrong {
    border-radius: var(--r-xl, 16px) var(--r-xl, 16px) 0 0;
    border-right: 1px solid var(--border-subtle, rgba(14,19,32,.1));
    border-bottom: none;
  }
  .era-panel--dark .era-q--right,
  .era-panel--ai .era-q--right {
    border-radius: 0 0 var(--r-xl, 16px) var(--r-xl, 16px);
    border-left: 1px solid rgba(200,85,61,.2);
    border-top: none;
  }
  .era-panel--light .era-q--right {
    border-radius: 0 0 var(--r-xl, 16px) var(--r-xl, 16px);
    border-left: 1px solid rgba(200,85,61,.2);
    border-top: none;
  }
}


/* ╔═══════════════════════════════════════════════════════╗
   §3  WHY MOST AI FAILS — dark ink, two-column diagnosis
   ╚═══════════════════════════════════════════════════════╝ */

#ai-fails {
  background: var(--ink);
  padding: clamp(5rem, 10vw, 9rem) var(--gutter);
}

.ai-fails-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.ai-fails-head {
  max-width: 900px;
  margin-bottom: clamp(3.5rem, 6vw, 5.5rem);
}

.ai-fails-hl {
  font-family: var(--font);
  font-size: clamp(32px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: #fff;
  margin: 1.25rem 0 1.5rem;
  max-width: 20ch;
}

.ai-fails-sub {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  line-height: 1.65;
  color: var(--ink-text-body);
  margin: 0;
  max-width: 60ch;
}

.ai-fails-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
@media (max-width: 760px) { .ai-fails-grid { grid-template-columns: 1fr; } }

.ai-fail {
  background: rgba(255,255,255,.035);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: var(--r-xl);
  padding: clamp(2rem, 3.5vw, 3rem);
  transition: border-color .3s var(--ease), background .3s;
}
.ai-fail:hover {
  border-color: rgba(200,85,61,.35);
  background: rgba(255,255,255,.05);
}

.ai-fail-num {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--terra);
  margin-bottom: 1.25rem;
}

.ai-fail-title {
  font-family: var(--font);
  font-size: clamp(1.25rem, 2.2vw, 1.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 0 0 1rem;
}

.ai-fail-text {
  font-size: clamp(.9375rem, 1.4vw, 1.0625rem);
  line-height: 1.75;
  color: var(--ink-text-body);
  margin: 0;
}


/* ╔═══════════════════════════════════════════════════════╗
   §3B  WHAT EARNS ITS PLACE — light, three properties
   ╚═══════════════════════════════════════════════════════╝ */

#ai-earns {
  background: var(--paper);
  padding: clamp(5rem, 10vw, 9rem) var(--gutter);
}

.ai-earns-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.ai-earns-head {
  max-width: 760px;
  margin-bottom: clamp(3rem, 5vw, 4.5rem);
}

.ai-earns-hl {
  font-family: var(--font);
  font-size: clamp(32px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--text-strong);
  margin: 1rem 0 0;
  max-width: 18ch;
}

.ai-earns-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.ai-earns-item {
  display: grid;
  grid-template-columns: clamp(3rem, 6vw, 5rem) 1fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: start;
  padding: clamp(2rem, 3.5vw, 3rem) 0 clamp(2rem, 3.5vw, 3rem) clamp(1.25rem, 2.5vw, 2rem);
  border-top: 1px solid var(--border-subtle);
  position: relative;
  transition: padding-left .4s var(--ease);
}
.ai-earns-item:last-child { border-bottom: 1px solid var(--border-subtle); }

/* Hover terra bar slides down the left — sits in the padding gutter, never over the number */
.ai-earns-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--terra);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .4s var(--ease);
  border-radius: 2px;
}
.ai-earns-item:hover::before { transform: scaleY(1); }

.ai-earns-num {
  font-family: var(--font);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: rgba(14,19,32,.14);
  line-height: 1;
}

.ai-earns-body { display: flex; flex-direction: column; gap: .75rem; }

.ai-earns-item-title {
  font-family: var(--font);
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-strong);
  margin: 0;
}

.ai-earns-item-text {
  font-size: clamp(.9375rem, 1.4vw, 1.0625rem);
  line-height: 1.75;
  color: var(--text-body);
  margin: 0;
  max-width: 64ch;
}

.ai-earns-close {
  font-family: var(--font);
  font-size: clamp(1.25rem, 2.6vw, 2rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.025em;
  color: var(--text-strong);
  margin: clamp(3rem, 5vw, 4.5rem) 0 0;
  max-width: 30ch;
}
.ai-earns-close em {
  font-style: normal;
  color: var(--terra);
}

@media (max-width: 600px) {
  .ai-earns-item { grid-template-columns: 1fr; gap: .5rem; }
}


/* ╔═══════════════════════════════════════════════════════╗
   §4  AGENTRA PROOF CARD
   ╚═══════════════════════════════════════════════════════╝ */

#ai-agentra {
  background: var(--ink);
  padding: clamp(2rem, 5vw, 4rem) var(--gutter) clamp(5rem, 10vw, 9rem);
}

.ai-agentra-card {
  max-width: calc(var(--max) + var(--gutter) * 2);
  margin: 0 auto;
  background: #13151A;
  border-radius: 20px;
  padding: clamp(3rem, 6vw, 6rem) clamp(2rem, 5vw, 5.5rem);
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
  border: 1px solid rgba(225,29,116,.12);
}

/* Magenta glow — bottom right */
.ai-agentra-card::before {
  content: '';
  position: absolute;
  bottom: -180px;
  right: -120px;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(225,29,116,.2) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

/* Top-left ambient glow */
.ai-agentra-card::after {
  content: '';
  position: absolute;
  top: -80px;
  left: -60px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(225,29,116,.06) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

/* Ghost letterform — decorative large A */
.ai-agentra-ghost {
  position: absolute;
  bottom: -0.25em;
  right: -0.06em;
  font-family: var(--font);
  font-size: 280px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(225,29,116,.1);
  text-stroke: 1px rgba(225,29,116,.1);
  pointer-events: none;
  z-index: 0;
  user-select: none;
}

.ai-agentra-left,
.ai-agentra-right {
  position: relative;
  z-index: 1;
}

.ai-agentra-counter {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(225,29,116,.5);
  margin: 0 0 .75rem;
}

.ai-agentra-eyebrow {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #E11D74;
  margin: 0 0 1.5rem;
}

.ai-agentra-heading {
  font-family: var(--font);
  font-size: clamp(1.6rem, 4vw, 3.25rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 0 0 1.5rem;
}

.ai-agentra-desc {
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--ink-text-body);
  margin: 0 0 2rem;
  max-width: 44ch;
}

.ai-agentra-cta {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .9375rem;
  font-weight: 600;
  color: #E11D74;
  text-decoration: none;
  transition: gap .2s var(--ease), color .2s var(--ease);
}

.ai-agentra-cta:hover {
  gap: .875rem;
  color: #f03d85;
}

.ai-agentra-cta svg {
  width: 16px; height: 16px;
  stroke: currentColor;
  stroke-width: 1.75;
  fill: none;
  transition: inherit;
}

.ai-agentra-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .625rem;
}

.ai-agentra-chip {
  font-size: .8125rem;
  font-weight: 500;
  color: rgba(225,29,116,.85);
  background: rgba(225,29,116,.09);
  border: 1px solid rgba(225,29,116,.18);
  border-radius: 6px;
  padding: .5rem .9rem;
  line-height: 1;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.ai-agentra-chip:hover {
  background: rgba(225,29,116,.18);
  border-color: rgba(225,29,116,.38);
  color: #E11D74;
}

/* Signal chip — branded, distinct */
.ai-agentra-chip--signal {
  background: rgba(225,29,116,.15);
  border-color: rgba(225,29,116,.35);
  color: #E11D74;
  font-weight: 600;
}

.ai-agentra-chip--signal:hover {
  background: rgba(225,29,116,.25);
  border-color: rgba(225,29,116,.55);
}

@media (max-width: 900px) {
  .ai-agentra-card {
    grid-template-columns: 1fr;
  }

  .ai-agentra-ghost {
    font-size: 180px;
    opacity: .6;
  }
}


/* ╔═══════════════════════════════════════════════════════╗
   §5  CTA SPLIT
   ╚═══════════════════════════════════════════════════════╝ */

#ai-cta-split {
  background: var(--ink);
  padding: clamp(5rem, 10vw, 9rem) var(--gutter);
}

.ai-cta-split-inner {
  max-width: calc(var(--max) + var(--gutter) * 2);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.ai-cta-door {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 16px;
  padding: clamp(2.25rem, 4.5vw, 3.5rem) clamp(2rem, 3.5vw, 3rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color .25s var(--ease), background .25s var(--ease), transform .3s var(--ease), box-shadow .3s var(--ease);
}

.ai-cta-door:hover {
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.16);
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(0,0,0,.3);
}

.ai-cta-door--agentra {
  border-color: rgba(225,29,116,.2);
  background: rgba(225,29,116,.04);
}

.ai-cta-door--agentra:hover {
  border-color: rgba(225,29,116,.4);
  background: rgba(225,29,116,.08);
  box-shadow: 0 14px 40px rgba(225,29,116,.15);
}

.ai-cta-door-eyebrow {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
  margin: 0;
}

.ai-cta-door-eyebrow--signal {
  color: rgba(225,29,116,.7);
}

.ai-cta-door-heading {
  font-family: var(--font);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  letter-spacing: -0.015em;
  margin: 0;
}

.ai-cta-door-sub {
  font-size: .9rem;
  line-height: 1.6;
  color: var(--ink-text-body);
  margin: 0;
  flex: 1;
}

.ai-cta-door-actions {
  margin-top: .5rem;
}

/* Agentra CTA button — Signal Magenta fill, white text */
.ai-cta-agentra-btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font);
  font-size: .9375rem;
  font-weight: 600;
  color: #fff;
  background: #E11D74;
  border: none;
  border-radius: 8px;
  padding: .75rem 1.5rem;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s var(--ease), transform .2s var(--ease), box-shadow .2s var(--ease);
  line-height: 1;
}

.ai-cta-agentra-btn:hover {
  background: #c91863;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(225,29,116,.35);
  color: #fff;
}

@media (max-width: 680px) {
  .ai-cta-split-inner {
    grid-template-columns: 1fr;
  }
}


/* ╔═══════════════════════════════════════════════════════╗
   Scroll reveal
   ╚═══════════════════════════════════════════════════════╝ */

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

[data-delay="1"] { transition-delay: .05s; }
[data-delay="2"] { transition-delay: .12s; }
[data-delay="3"] { transition-delay: .19s; }
[data-delay="4"] { transition-delay: .26s; }
[data-delay="5"] { transition-delay: .33s; }
[data-delay="6"] { transition-delay: .40s; }