/* ==========================================================================
   DESIGN TOKENS
   Subject: B2B AI-integration studio — "we wire AI into the software you
   already run." Brand palette is drawn directly from the ITDESK SOLUTIONS
   logo: indigo (--signal) is the primary/structural color (nav, links,
   diagrams, focus states); magenta (--coral, kept as the "action" token
   name so existing markup needs no rewiring) is reserved for the one CTA
   that matters — it's literally the accent stroke in the logo's desk/table
   bar. Teal (--mint) stays as the neutral "automation succeeded" signal
   since the brand mark doesn't define a third color.
   ========================================================================== */
:root {
  --base: #F4F3FA;
  --surface: #FFFFFF;
  --surface-alt: #F8F7FC;
  --surface-raised: #EFEDF9;
  --line: rgba(62, 64, 147, 0.12);
  --line-strong: rgba(62, 64, 147, 0.24);

  --signal: #3E4093;
  --signal-soft: rgba(62, 64, 147, 0.10);
  --mint: #0D9488;
  --mint-soft: rgba(13, 148, 136, 0.10);
  --coral: #A73594;
  --coral-hover: #BF3FA9;

  --ink: #10182B;
  --ink-muted: #545E75;
  --ink-faint: #8A94A6;
  --overlay: rgba(241, 244, 249, 0.86);

  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --container: 1180px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--base);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px var(--signal-soft);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .35s var(--ease), border-color .35s var(--ease);
}
.btn-primary {
  background: var(--coral);
  color: #1A0E08;
  position: relative;
  overflow: hidden;
}
.btn-primary:hover { background: var(--coral-hover); transform: translateY(-2px); box-shadow: 0 10px 30px -8px rgba(167,53,148,0.45); }
.btn-primary::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.5) 50%, transparent 70%);
  transform: translateX(-120%);
}
.btn-primary:hover::after { transform: translateX(120%); transition: transform .8s var(--ease); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--signal); color: var(--signal); transform: translateY(-2px); }

/* ==========================================================================
   NAV / MEGA MENU
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background .3s var(--ease), border-color .3s var(--ease), padding .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: var(--overlay);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  padding: 12px 0;
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 19px; }
.brand-logo { height: 38px; width: auto; display: block; }
.site-footer .brand-logo { height: 34px; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav > ul { display: flex; align-items: center; gap: 2px; list-style: none; margin: 0; padding: 0; }
.nav-item { position: relative; }
.nav-item > a {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 14px;
  font-size: 14.5px; font-weight: 500;
  color: var(--ink-muted);
  border-radius: 999px;
  transition: color .25s, background .25s;
}
.nav-item:hover > a, .nav-item > a.is-active { color: var(--ink); background: var(--surface); }
.nav-caret { width: 8px; height: 8px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg); margin-top: -3px; opacity: .6; }

.mega-panel {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translate(-50%, 8px);
  min-width: 560px;
  max-width: 720px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.6);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
  z-index: 50;
}
.nav-item:hover .mega-panel,
.nav-item:focus-within .mega-panel {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0);
}
.mega-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px 28px;
}
.mega-grid a {
  display: block;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--ink-muted);
  transition: background .2s, color .2s, padding-left .2s;
}
.mega-grid a:hover { background: var(--surface-raised); color: var(--ink); padding-left: 14px; }

.nav-toggle { display: none; }

/* ==========================================================================
   HERO + PARALLAX BACKDROP
   ========================================================================== */
.hero {
  position: relative;
  padding: 190px 0 120px;
  overflow: hidden;
  isolation: isolate;
}
.hero-backdrop {
  position: absolute; inset: -10% -10% auto -10%;
  height: 140%;
  z-index: -2;
  background:
    radial-gradient(60% 50% at 18% 10%, rgba(56,102,245,0.10), transparent 60%),
    radial-gradient(50% 40% at 85% 20%, rgba(15,169,104,0.08), transparent 60%),
    var(--base);
}
.circuit-layer {
  position: absolute; inset: 0;
  z-index: -1;
  opacity: 0.7;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(60% 60% at 50% 30%, black, transparent 85%);
}

.hero-inner { display: grid; grid-template-columns: 1fr; gap: 56px; text-align: center; }
.hero h1 {
  font-size: clamp(38px, 6vw, 68px);
  max-width: 16ch;
  margin: 18px auto 0;
}
.hero-sub {
  max-width: 54ch;
  margin: 20px auto 0;
  color: var(--ink-muted);
  font-size: 18px;
}
.hero-actions { display: flex; gap: 14px; justify-content: center; margin-top: 34px; flex-wrap: wrap; }

/* Signature element: the flow diagram. SVG line-draw + traveling pulses. */
.flow-diagram { margin-top: 96px; }
.flow-diagram svg { width: 100%; height: auto; overflow: visible; }
.flow-trace {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1.5;
}
.flow-trace.is-live {
  stroke: var(--signal);
  stroke-dasharray: 6 520;
  stroke-dashoffset: 0;
  animation: trace-draw 2.4s var(--ease) forwards;
}
@keyframes trace-draw {
  from { stroke-dasharray: 0 900; }
  to   { stroke-dasharray: 900 0; }
}
.flow-pulse {
  fill: var(--mint);
  filter: drop-shadow(0 0 5px rgba(15,169,104,0.55));
}
.flow-node {
  fill: var(--surface);
  stroke: var(--line-strong);
  stroke-width: 1.5;
}
.flow-node.is-core { stroke: var(--signal); }
.flow-label {
  font-family: var(--font-mono);
  font-size: 12px;
  fill: var(--ink-muted);
  text-anchor: middle;
}
.flow-label.is-strong { fill: var(--ink); font-weight: 600; }
.flow-badge {
  fill: var(--surface-raised);
  stroke: var(--line);
}

/* ==========================================================================
   SCROLL REVEAL
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-stagger > * { transition-delay: calc(var(--i, 0) * 90ms); }

/* ==========================================================================
   SECTIONS
   ========================================================================== */
.section { padding: 110px 0; position: relative; }
.section-alt { background: var(--surface-alt); }
.section-head { max-width: 640px; margin: 0 0 56px; }
.section-head.is-centered { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(28px, 3.6vw, 40px); margin-top: 14px; }
.section-head p { color: var(--ink-muted); margin-top: 14px; font-size: 16.5px; }

/* differentiator */
.differentiator {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.differentiator-visual {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.stack-row { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 14px 0; font-family: var(--font-mono); font-size: 13px; color: var(--ink-muted); }
.stack-pill {
  padding: 10px 16px; border-radius: 999px; border: 1px solid var(--line-strong);
  background: var(--surface-raised); color: var(--ink); white-space: nowrap;
}
.stack-arrow { color: var(--signal); font-size: 16px; }

/* capability grid ("What can we automate?") */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.capability-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px;
  transition: transform .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease);
  position: relative;
}
.capability-card:hover {
  transform: translateY(-6px);
  border-color: var(--signal);
  box-shadow: 0 20px 40px -20px rgba(91,140,255,0.35);
}
.capability-icon {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--signal-soft);
  display: flex; align-items: center; justify-content: center;
  color: var(--signal); margin-bottom: 18px; font-family: var(--font-mono); font-size: 15px;
}
.capability-card h3 { font-size: 17px; margin-bottom: 8px; }
.capability-card p { color: var(--ink-muted); font-size: 14.5px; margin: 0; }

/* process rail ("How it works") — order is real here, so numbering earns its place */
.process-rail { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; }
.process-rail::before {
  content: '';
  position: absolute; top: 21px; left: 8%; right: 8%; height: 1px;
  background: repeating-linear-gradient(90deg, var(--line-strong) 0 8px, transparent 8px 16px);
}
.process-step { text-align: center; padding: 0 12px; position: relative; }
.process-num {
  width: 44px; height: 44px; margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--surface);
  border: 1.5px solid var(--line-strong);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 14px; color: var(--signal);
  position: relative; z-index: 2;
  transition: border-color .3s, box-shadow .3s;
}
.process-step.is-visible .process-num { border-color: var(--signal); box-shadow: 0 0 0 6px var(--signal-soft); }
.process-step h4 { font-size: 15.5px; margin-bottom: 8px; }
.process-step p { color: var(--ink-muted); font-size: 13.5px; margin: 0; }

/* stats / case studies */
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.stat-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 30px;
}
.stat-value {
  font-family: var(--font-display); font-size: 46px; font-weight: 700; color: var(--mint);
  display: flex; align-items: baseline; gap: 4px;
}
.stat-label { color: var(--ink-muted); font-size: 14.5px; margin-top: 6px; }
.stat-summary { color: var(--ink); font-size: 14.5px; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }

/* strips: industries / tech */
.chip-strip { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-family: var(--font-mono); font-size: 13px; color: var(--ink-muted);
  border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px;
  transition: border-color .25s, color .25s;
}
.chip:hover { border-color: var(--signal); color: var(--ink); }

/* final CTA */
.cta-band {
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--surface-raised), var(--surface));
  border: 1px solid var(--line-strong);
  padding: 72px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(50% 80% at 50% 0%, rgba(56,102,245,0.10), transparent 70%);
}
.cta-band h2 { font-size: clamp(26px, 4vw, 38px); position: relative; }
.cta-band .hero-actions { position: relative; }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 64px 0 32px; background: var(--surface-alt); }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; }
.footer-col h5 { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 16px; }
.footer-col a { display: block; color: var(--ink-muted); font-size: 14px; padding: 6px 0; transition: color .2s; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--ink-faint); font-size: 13px; flex-wrap: wrap; gap: 12px; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 980px) {
  .differentiator { grid-template-columns: 1fr; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .process-rail { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .process-rail::before { display: none; }
  .stat-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .capability-grid { grid-template-columns: 1fr; }
  .process-rail { grid-template-columns: 1fr 1fr; }
  .hero { padding: 150px 0 80px; }
  .footer-grid { grid-template-columns: 1fr; }
}