/* ============================================================
   VarthAI — marketing site layout & sections
   Built on the VarthAI Design System tokens + components.
   Motion is concentrated in two moments (hero + ROI); the rest
   of the page stays calm, per DESIGN.md.
   ============================================================ */

html { scroll-behavior:smooth; }
body { overflow-x:hidden; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }

.mkt-container{ max-width:1200px; margin:0 auto; padding:0 clamp(20px,5vw,48px); }
.mkt-section{ padding:clamp(64px,9vw,120px) 0; position:relative; }
.mkt-section--warm{ background:var(--color-surface-warm); }
a{ color:inherit; }

/* Shared section head ------------------------------------------------ */
.mkt-head{ max-width:660px; margin:0 0 clamp(36px,5vw,56px); }
.mkt-head--center{ margin-left:auto; margin-right:auto; text-align:center; }
.mkt-head__title{
  font-family:var(--font-serif); font-weight:var(--weight-light);
  font-size:clamp(30px,3.8vw,48px); line-height:1.08; letter-spacing:-0.02em;
  margin:14px 0 0; color:var(--text-primary); text-wrap:balance;
}
.mkt-head__title em{ font-style:italic; color:var(--primary); }
.mkt-head__lede{ font-size:var(--text-md); line-height:1.6; color:var(--text-secondary); margin:16px 0 0; max-width:56ch; }
.mkt-head--center .mkt-head__lede{ margin-left:auto; margin-right:auto; }

/* ==================================================================
   Header
   ================================================================== */
.mkt-header{
  position:sticky; top:0; z-index:40; border-bottom:1px solid transparent;
  transition:background-color var(--dur-base) var(--ease-standard),
             box-shadow var(--dur-base) var(--ease-standard),
             border-color var(--dur-base) var(--ease-standard);
}
.mkt-header--scrolled{
  background:rgba(252,252,248,.82); backdrop-filter:blur(12px) saturate(1.4);
  border-bottom-color:var(--border); box-shadow:var(--shadow-sm);
}
.mkt-header__inner{ display:flex; align-items:center; justify-content:space-between; height:74px; gap:24px; }
.mkt-brand{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.mkt-brand__mark{ height:34px; width:auto; }
.mkt-brand__word{ font-family:var(--font-serif); font-weight:400; font-size:23px; letter-spacing:-.01em; color:var(--text-primary); }
.mkt-brand__word--light{ color:var(--neutral-50); }
.mkt-nav{ display:flex; gap:30px; }
.mkt-nav__link{ position:relative; font-size:15px; font-weight:500; color:var(--text-secondary); text-decoration:none; transition:var(--transition-colors); }
.mkt-nav__link::after{
  content:""; position:absolute; left:0; bottom:-6px; height:2px; width:100%;
  background:var(--primary); transform:scaleX(0); transform-origin:left;
  transition:transform var(--dur-base) var(--ease-standard);
}
.mkt-nav__link:hover{ color:var(--primary); }
.mkt-nav__link:hover::after{ transform:scaleX(1); }
.mkt-header__actions{ display:flex; align-items:center; gap:10px; }
.mkt-burger{ display:none; background:none; border:none; padding:8px; margin:-8px; color:var(--text-primary); cursor:pointer; }

/* mobile menu */
.mkt-mobilenav{ display:none; }
@media (max-width:880px){
  .mkt-nav{ display:none; }
  .mkt-hide-sm{ display:none; }
  .mkt-burger{ display:inline-flex; }
  .mkt-mobilenav{
    display:block; position:fixed; inset:74px 0 auto 0; z-index:39;
    background:var(--color-bg); border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-lg); padding:16px clamp(20px,5vw,48px) 24px;
    transform:translateY(-12px); opacity:0; pointer-events:none;
    transition:opacity var(--dur-base) var(--ease-standard), transform var(--dur-base) var(--ease-standard);
  }
  .mkt-mobilenav.is-open{ transform:translateY(0); opacity:1; pointer-events:auto; }
  .mkt-mobilenav a{ display:block; padding:12px 0; font-size:17px; font-weight:500; color:var(--text-primary); border-bottom:1px solid var(--border); }
  .mkt-mobilenav a:last-child{ border-bottom:none; }
}

/* ==================================================================
   Hero
   ================================================================== */
.mkt-hero{ position:relative; padding:clamp(52px,7vw,104px) 0 clamp(48px,7vw,88px); overflow:hidden; }
/* ambient WebGL wire-field, sits behind hero content */
.mkt-hero__canvas{
  position:absolute; inset:0; z-index:0; width:100%; height:100%;
  pointer-events:none; opacity:.9;
  -webkit-mask-image:radial-gradient(120% 100% at 70% 30%, var(--ink) 40%, transparent 100%);
          mask-image:radial-gradient(120% 100% at 70% 30%, var(--ink) 40%, transparent 100%);
}
.mkt-hero__grid{ position:relative; z-index:1; display:grid; grid-template-columns:1.05fr 0.95fr; gap:clamp(32px,5vw,72px); align-items:center; }
.mkt-hero__eyebrow{ display:inline-flex; align-items:center; gap:8px; }
.mkt-hero__title{
  font-family:var(--font-serif); font-weight:300;
  font-size:clamp(42px,6.2vw,80px); line-height:1.0; letter-spacing:-0.03em;
  margin:20px 0 0; color:var(--text-primary); text-wrap:balance;
}
.mkt-hero__title em{ font-style:italic; color:var(--primary); }
.mkt-hero__lede{ font-size:clamp(17px,1.4vw,20px); line-height:1.6; color:var(--text-secondary); max-width:48ch; margin:22px 0 0; }
.mkt-hero__cta{ display:flex; flex-wrap:wrap; gap:12px; margin:32px 0 0; }
.mkt-hero__stats{ display:flex; flex-wrap:wrap; gap:14px 20px; margin:40px 0 0; padding-top:28px; border-top:1px solid var(--border); }
.mkt-hero__stat{ display:flex; align-items:center; gap:9px; font-size:14.5px; color:var(--text-secondary); }
.mkt-hero__stat svg{ color:var(--primary); flex:none; }

/* hero flow panel (interactive, cursor-tilt) */
.mkt-hero__panel{ display:flex; justify-content:center; perspective:1200px; }
.mkt-flow{
  position:relative; width:100%; max-width:430px;
  background:var(--color-surface); border:1px solid var(--border);
  border-radius:var(--radius-xl); box-shadow:var(--shadow-lg);
  padding:26px; display:flex; flex-direction:column; gap:14px;
  transform-style:preserve-3d;
  transition:box-shadow var(--dur-base) var(--ease-standard);
  will-change:transform;
}
.mkt-flow:hover{ box-shadow:var(--shadow-xl); }
.mkt-flow__head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:2px; }
.mkt-flow__tag{ font-family:var(--font-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color:var(--text-muted); }
.mkt-flow__live{ display:inline-flex; align-items:center; gap:6px; font-family:var(--font-mono); font-size:11px; color:var(--success); }
.mkt-flow__live::before{ content:""; width:7px; height:7px; border-radius:var(--radius-pill); background:var(--success); box-shadow:0 0 0 0 rgba(79,122,82,.5); animation:vt-pulse 2.4s var(--ease-standard) infinite; }
@keyframes vt-pulse{ 0%{ box-shadow:0 0 0 0 rgba(79,122,82,.45); } 70%{ box-shadow:0 0 0 7px rgba(79,122,82,0); } 100%{ box-shadow:0 0 0 0 rgba(79,122,82,0); } }
.mkt-flow__row{ display:flex; align-items:center; gap:10px; transform:translateZ(28px); }
.mkt-flow__row--indent{ padding-left:22px; height:14px; transform:translateZ(18px); }
.mkt-flow__node{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-ui); font-size:14px; font-weight:500; color:var(--text-primary);
  background:var(--color-surface-warm); border:1px solid var(--border);
  border-radius:var(--radius-md); padding:9px 12px; white-space:nowrap;
  transition:transform var(--dur-base) var(--ease-standard), box-shadow var(--dur-base) var(--ease-standard);
}
.mkt-flow__node svg{ color:var(--text-muted); }
.mkt-flow__node--trigger{ background:var(--terracotta-50); border-color:var(--terracotta-200); color:var(--terracotta-700); }
.mkt-flow__node--trigger svg{ color:var(--terracotta-500); }
.mkt-flow__node--active{ box-shadow:var(--shadow-brand); transform:translateY(-1px); }
.mkt-flow__node--done{ background:var(--success-bg); border-color:transparent; color:var(--success); }
.mkt-flow__node--done svg{ color:var(--success); }
.mkt-flow__wire{ flex:1; height:2px; background:repeating-linear-gradient(90deg,var(--border-strong) 0 6px,transparent 6px 12px); background-size:200% 100%; }
.mkt-flow__wire--v{ width:2px; height:14px; flex:none; background:repeating-linear-gradient(180deg,var(--border-strong) 0 6px,transparent 6px 12px); background-size:100% 200%; }
.mkt-flow__foot{ display:flex; align-items:center; justify-content:space-between; margin-top:6px; padding-top:14px; border-top:1px solid var(--border); transform:translateZ(20px); }
.mkt-flow__ok{ display:inline-flex; align-items:center; gap:6px; font-family:var(--font-mono); font-size:12px; color:var(--success); }
.mkt-flow__time{ font-family:var(--font-mono); font-size:12px; color:var(--text-muted); }
/* animated dashed wires when motion allowed */
.mkt-flow.is-animated .mkt-flow__wire{ animation:vt-wire 2.2s linear infinite; }
.mkt-flow.is-animated .mkt-flow__wire--v{ animation:vt-wire-v 2.2s linear infinite; }
@keyframes vt-wire{ to{ background-position:-200% 0; } }
@keyframes vt-wire-v{ to{ background-position:0 -200%; } }

/* ==================================================================
   Trust strip (business types, not fake logos)
   ================================================================== */
.mkt-trust{ padding:34px 0; border-top:1px solid var(--border); border-bottom:1px solid var(--border); background:var(--color-bg); }
.mkt-trust__label{ text-align:center; font-family:var(--font-mono); font-size:12px; letter-spacing:.14em; text-transform:uppercase; color:var(--text-muted); margin:0 0 20px; }
.mkt-trust__row{ display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:14px clamp(18px,4vw,44px); }
.mkt-trust__item{ display:inline-flex; align-items:center; gap:9px; font-family:var(--font-serif); font-size:19px; color:var(--neutral-500); letter-spacing:-.01em; }
.mkt-trust__item svg{ color:var(--terracotta-300); flex:none; }

/* ==================================================================
   Services
   ================================================================== */
.mkt-services{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.mkt-service{ display:flex; flex-direction:column; gap:12px; }
.mkt-service__icon{
  display:inline-flex; align-items:center; justify-content:center; width:48px; height:48px;
  border-radius:var(--radius-md); background:var(--terracotta-50); color:var(--primary); margin-bottom:2px;
}
.mkt-service--wide{ grid-column:span 2; }
.mkt-service__title{ font-family:var(--font-serif); font-weight:400; font-size:22px; margin:0; color:var(--text-primary); }
.mkt-service__body{ font-size:15px; line-height:1.6; color:var(--text-secondary); margin:0; flex:1; }
.mkt-service__tags{ display:flex; flex-wrap:wrap; gap:6px; margin-top:2px; }
@media (max-width:960px){ .mkt-services{ grid-template-columns:repeat(2,1fr); } .mkt-service--wide{ grid-column:span 2; } }
@media (max-width:600px){ .mkt-services{ grid-template-columns:1fr; } .mkt-service--wide{ grid-column:span 1; } }

/* ==================================================================
   Process
   ================================================================== */
.mkt-steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(24px,3vw,40px); counter-reset:step; }
.mkt-step{ position:relative; padding-top:8px; }
.mkt-step__n{ font-family:var(--font-mono); font-size:13px; color:var(--terracotta-400); letter-spacing:.1em; }
.mkt-step__icon{
  display:flex; align-items:center; justify-content:center; width:52px; height:52px;
  border-radius:var(--radius-lg); background:var(--color-surface); border:1px solid var(--border);
  color:var(--primary); margin:14px 0 18px; box-shadow:var(--shadow-xs);
}
.mkt-step__title{ font-family:var(--font-serif); font-weight:400; font-size:24px; margin:0 0 8px; color:var(--text-primary); }
.mkt-step__body{ font-size:15px; line-height:1.6; color:var(--text-secondary); margin:0; max-width:36ch; }
@media (max-width:760px){ .mkt-steps{ grid-template-columns:1fr; gap:22px; } }

/* ==================================================================
   ROI / Case study — second motion moment (ink panel + count-up)
   ================================================================== */
.mkt-roi__panel{ display:grid; grid-template-columns:1.15fr 1fr; gap:clamp(28px,4vw,56px); align-items:center; padding:clamp(32px,4vw,56px)!important; position:relative; }
.mkt-roi__panel::after{ /* faint wire motif in the dark panel */
  content:""; position:absolute; right:-40px; top:-40px; width:220px; height:220px;
  background:radial-gradient(circle, rgba(217,138,61,.14), transparent 70%); pointer-events:none;
}
.mkt-roi__quote{ font-family:var(--font-serif); font-weight:300; font-size:clamp(22px,2.5vw,31px); line-height:1.34; color:var(--neutral-50); margin:18px 0 26px; text-wrap:balance; }
.mkt-roi__person{ display:flex; align-items:center; gap:13px; }
.mkt-roi__name{ font-weight:600; color:var(--neutral-50); font-size:15px; }
.mkt-roi__role{ font-size:13px; color:var(--neutral-400); }
.mkt-roi__ledger{ display:flex; flex-direction:column; gap:2px; padding-left:clamp(0px,3vw,32px); border-left:1px solid rgba(255,255,255,.14); }
.mkt-roi__line{ display:flex; align-items:baseline; justify-content:space-between; gap:16px; padding:11px 0; border-bottom:1px dashed rgba(255,255,255,.14); }
.mkt-roi__line:last-of-type{ border-bottom:none; }
.mkt-roi__line-label{ font-size:14px; color:var(--neutral-300); }
.mkt-roi__line-val{ font-family:var(--font-display); font-weight:300; font-size:26px; color:var(--neutral-50); letter-spacing:-.01em; }
.mkt-roi__line--total .mkt-roi__line-label{ color:var(--saffron-300); font-weight:600; }
.mkt-roi__line--total .mkt-roi__line-val{ color:var(--saffron-500); font-size:32px; }
@media (max-width:820px){ .mkt-roi__panel{ grid-template-columns:1fr; } }

/* ==================================================================
   Pricing
   ================================================================== */
.mkt-pricing{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; align-items:start; }
.mkt-plan{ display:flex; flex-direction:column; height:100%; padding:28px!important; }
.mkt-plan--featured{ border-color:var(--terracotta-300); box-shadow:var(--shadow-lg); position:relative; }
.mkt-plan--featured::before{
  content:""; position:absolute; inset:0; border-radius:var(--radius-card);
  border:1.5px solid var(--terracotta-300); pointer-events:none;
}
.mkt-plan__flag{ position:absolute; top:-12px; left:50%; transform:translateX(-50%); }
.mkt-plan__name{ font-family:var(--font-serif); font-size:23px; color:var(--text-primary); margin:0; }
.mkt-plan__for{ font-size:13.5px; color:var(--text-muted); margin:4px 0 0; min-height:2.6em; }
.mkt-plan__price{ display:flex; align-items:baseline; gap:6px; margin:18px 0 2px; }
.mkt-plan__amount{ font-family:var(--font-display); font-weight:300; font-size:44px; line-height:1; color:var(--text-primary); letter-spacing:-.02em; }
.mkt-plan__per{ font-size:14px; color:var(--text-secondary); }
.mkt-plan__setup{ font-family:var(--font-mono); font-size:12px; color:var(--text-muted); margin:0 0 20px; }
.mkt-plan__cta{ margin-bottom:22px; }
.mkt-plan__feats{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:11px; }
.mkt-plan__feat{ display:flex; align-items:flex-start; gap:10px; font-size:14.5px; line-height:1.45; color:var(--text-secondary); }
.mkt-plan__feat svg{ flex:none; margin-top:2px; color:var(--primary); }
.mkt-plan__feat--head{ font-family:var(--font-mono); font-size:11.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--text-muted); margin-top:8px; }
.mkt-plan__feat--head:first-child{ margin-top:0; }
@media (max-width:920px){ .mkt-pricing{ grid-template-columns:1fr; max-width:460px; margin:0 auto; } }

/* ==================================================================
   CTA
   ================================================================== */
.mkt-cta__inner{ text-align:center; max-width:720px; margin:0 auto; display:flex; flex-direction:column; align-items:center; }
.mkt-cta__title{ font-family:var(--font-serif); font-weight:300; font-size:clamp(32px,4.6vw,58px); line-height:1.04; letter-spacing:-.025em; margin:14px 0 0; color:var(--text-primary); text-wrap:balance; }
.mkt-cta__title em{ font-style:italic; color:var(--primary); }
.mkt-cta__lede{ font-size:18px; color:var(--text-secondary); margin:18px 0 0; max-width:52ch; }
.mkt-cta__actions{ display:flex; flex-wrap:wrap; justify-content:center; gap:12px; margin-top:34px; }

/* ==================================================================
   Footer
   ================================================================== */
.mkt-footer{ background:var(--ink); color:var(--neutral-300); padding:68px 0 34px; }
.mkt-footer__grid{ display:grid; grid-template-columns:1.6fr 1fr 1fr 1fr; gap:32px; }
.mkt-footer__tag{ font-size:14px; line-height:1.6; color:var(--neutral-400); max-width:34ch; margin:16px 0 0; }
.mkt-footer__h{ font-family:var(--font-ui); font-size:13px; font-weight:600; letter-spacing:.04em; color:var(--neutral-150); margin:0 0 14px; }
.mkt-footer__col{ display:flex; flex-direction:column; gap:10px; }
.mkt-footer__link{ font-size:14px; color:var(--neutral-400); text-decoration:none; transition:var(--transition-colors); }
.mkt-footer__link:hover{ color:var(--saffron-300); }
.mkt-footer__base{ display:flex; flex-wrap:wrap; gap:12px; justify-content:space-between; margin-top:52px; padding-top:24px; border-top:1px solid rgba(255,255,255,.1); font-size:13px; color:var(--neutral-500); }
.mkt-footer__base-links{ display:flex; gap:18px; }
.mkt-footer__base-links a{ color:var(--neutral-500); text-decoration:none; transition:var(--transition-colors); }
.mkt-footer__base-links a:hover{ color:var(--neutral-300); }
@media (max-width:760px){ .mkt-footer__grid{ grid-template-columns:1fr 1fr; } }

/* contact form inside dialog */
.mkt-form{ display:flex; flex-direction:column; gap:16px; }

/* ==================================================================
   Reveal base — content is visible by default; JS adds motion only
   when it is allowed. Never hide content behind a class here.
   ================================================================== */
.reveal{ opacity:1; }

/* ==================================================================
   Responsive hero
   ================================================================== */
@media (max-width:900px){
  .mkt-hero__grid{ grid-template-columns:1fr; }
  .mkt-hero__panel{ order:-1; }
  .mkt-hero__stats{ gap:12px 18px; }
}

/* ==================================================================
   Reduced motion — kill decorative/looping animation
   ================================================================== */
@media (prefers-reduced-motion: reduce){
  .mkt-flow__live::before{ animation:none; }
  .mkt-flow.is-animated .mkt-flow__wire,
  .mkt-flow.is-animated .mkt-flow__wire--v{ animation:none; }
  .mkt-dialog__backdrop, .vt-dialog{ animation:none; }
  *{ scroll-behavior:auto; }
}