/* ==========================================================================
   TraceVerge — Public website stylesheet
   Structure: tokens -> reset -> base -> layout -> components -> utilities
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --color-midnight: #06101F;
  --color-navy: #0B1730;
  --color-navy-raised: #101f3d;
  --color-blue: #2563EB;
  --color-cyan: #06B6D4;
  --color-violet: #8B5CF6;
  --color-success: #10B981;
  /* Not part of the approved brand palette: forms need a danger color the
     brand system doesn't define. Chosen for AA contrast (~6.6:1 on white). */
  --color-danger: #B42318;
  --color-white: #F8FAFC;
  --color-slate: #94A3B8;
  --color-light-surface: #F4F7FB;
  --color-border-dark: rgba(148, 163, 184, 0.16);
  --color-border-light: rgba(11, 23, 48, 0.10);
  --color-ink: #0B1730;
  --color-ink-soft: #3A4A67;

  --gradient-signature: linear-gradient(135deg, #2563EB 0%, #06B6D4 50%, #8B5CF6 100%);
  --gradient-signature-soft: linear-gradient(135deg, rgba(37,99,235,0.14) 0%, rgba(6,182,212,0.14) 50%, rgba(139,92,246,0.14) 100%);
  /* Richer variant for large dramatic surfaces (hero, deep sections) —
     same three brand hues, extended with the deeper navy/azure steps
     the founder asked for, so big dark areas have more depth than a flat
     two-stop fade. Buttons/pills/small accents keep --gradient-signature
     above; this one is reserved for backgrounds and large glows. */
  --gradient-rich: linear-gradient(135deg, #06101F 0%, #071B3D 32%, #123B8F 58%, #06B6D4 82%, #8B5CF6 100%);
  --gradient-text: linear-gradient(100deg, #2563EB 0%, #06B6D4 45%, #8B5CF6 100%);

  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --fs-h1: clamp(3rem, 6vw, 4rem);
  --fs-h2: clamp(2rem, 4vw, 3rem);
  --fs-h3: clamp(1.4rem, 2.5vw, 1.875rem);
  --fs-lg: 1.125rem;
  --fs-body: 1rem;
  --fs-sm: 0.875rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --shadow-card: 0 1px 2px rgba(6,16,31,0.06), 0 12px 32px -16px rgba(6,16,31,0.18);
  --shadow-card-dark: 0 1px 0 rgba(255,255,255,0.04) inset, 0 20px 48px -24px rgba(0,0,0,0.6);
  --shadow-focus: 0 0 0 3px rgba(37,99,235,0.45);

  --container-max: 1280px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 160ms var(--ease);
  --transition-base: 260ms var(--ease);
  --transition-slow: 600ms var(--ease);

  --header-height: 76px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { 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;
    transition-delay: 0ms !important;
    scroll-behavior: auto !important;
  }
}

body, h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
button { background: none; border: none; cursor: pointer; }
table { border-collapse: collapse; }

/* ---------- Base ---------- */
body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-navy);
}
h1 { font-size: var(--fs-h1); line-height: 1.05; font-weight: 700; }
h2 { font-size: var(--fs-h2); font-weight: 650; }
h3 { font-size: var(--fs-h3); font-weight: 600; }

p.lead, .text-lg { font-size: var(--fs-lg); color: var(--color-ink-soft); }
small, .text-sm { font-size: var(--fs-sm); }

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-sm);
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-blue);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 600;
}
.skip-link:focus {
  left: 0;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
@media (min-width: 1024px) {
  .container { padding-inline: var(--space-7); }
}

section { padding-block: var(--space-9); }
.section-tight { padding-block: var(--space-8); }

/* Premium closing CTA: a richer, more deliberate treatment than a flat
   dark section, using the same layered-glow language as the hero so the
   page's final beat before the footer feels considered rather than flat. */
.cta-premium { position: relative; overflow: hidden; isolation: isolate; }
.cta-premium::before {
  content: "";
  position: absolute;
  inset: -20%;
  z-index: -1;
  background:
    radial-gradient(45% 65% at 50% 100%, rgba(139,92,246,0.30), transparent 70%),
    radial-gradient(40% 55% at 15% 0%, rgba(37,99,235,0.22), transparent 70%),
    radial-gradient(40% 55% at 85% 0%, rgba(6,182,212,0.18), transparent 70%);
  pointer-events: none;
}
.cta-premium h2 { max-width: 24ch; margin-inline: auto; }

.section-dark {
  background: var(--color-midnight);
  color: var(--color-white);
}
.section-dark h1, .section-dark h2, .section-dark h3 { color: var(--color-white); }
.section-dark p { color: var(--color-slate); }

.section-navy { background: var(--color-navy); color: var(--color-white); }
.section-navy h1, .section-navy h2, .section-navy h3 { color: var(--color-white); }
.section-navy p { color: var(--color-slate); }

.section-surface { background: var(--color-light-surface); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  /* Cyan fails WCAG AA (~2.4:1) on light backgrounds; blue clears 4.5:1. */
  color: var(--color-blue);
  margin-bottom: var(--space-4);
}
.section-dark .eyebrow, .section-navy .eyebrow {
  /* On dark backgrounds cyan comfortably clears AA (~7.8:1), matching the brand accent. */
  color: var(--color-cyan);
}
.eyebrow::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--gradient-signature);
  border-radius: var(--radius-pill);
}

.section-head {
  max-width: 760px;
  margin-bottom: var(--space-8);
}
.section-head.center { margin-inline: auto; text-align: center; }

.text-gradient {
  background: var(--gradient-signature);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--fs-body);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  min-height: 44px;
}
.btn-primary {
  background: var(--gradient-signature);
  color: #fff;
  box-shadow: 0 10px 30px -12px rgba(37,99,235,0.55);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 16px 36px -14px rgba(37,99,235,0.65); }
.btn-secondary {
  background: transparent;
  color: var(--color-navy);
  border: 1.5px solid var(--color-border-light);
}
.section-dark .btn-secondary, .section-navy .btn-secondary {
  color: var(--color-white);
  border-color: var(--color-border-dark);
}
.btn-secondary:hover { border-color: var(--color-blue); }
.btn-ghost {
  color: var(--color-blue);
  padding-inline: var(--space-2);
}
.btn-ghost:hover { color: var(--color-cyan); }
.btn-sm { padding: 0.6rem 1.1rem; font-size: var(--fs-sm); }
.btn-block { width: 100%; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  height: var(--header-height);
  transition: background var(--transition-base), border-color var(--transition-base), backdrop-filter var(--transition-base);
}
/* Pages with no tall hero to float over (every sub-page) get this applied
   immediately on load by site.js; the homepage only gets it once the
   visitor scrolls past the hero, so the header starts fully transparent
   over the hero artwork as requested. */
.site-header.is-scrolled {
  background: rgba(6, 16, 31, 0.82);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom-color: var(--color-border-dark);
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}
@media (min-width: 1024px) {
  .site-header .container { display: grid; grid-template-columns: auto 1fr auto; }
}
.brand-mark { display: flex; align-items: center; height: 28px; }
.brand-mark img, .brand-mark svg { height: 28px; width: auto; }

.nav-primary {
  display: none;
}
.nav-primary ul {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
}
.nav-primary a {
  color: var(--color-slate);
  font-size: var(--fs-sm);
  font-weight: 600;
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.nav-primary a:hover,
.nav-primary a[aria-current="page"] {
  color: var(--color-white);
  border-color: var(--color-cyan);
}

.header-actions { display: flex; align-items: center; gap: var(--space-4); }
.header-actions .btn-primary { display: none; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  color: var(--color-white);
}
.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

.mobile-menu {
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background: var(--color-midnight);
  z-index: 99;
  padding: var(--space-6) var(--space-5) var(--space-8);
  overflow-y: auto;
  transform: translateX(100%);
  visibility: hidden;
  transition: transform var(--transition-base), visibility 0s linear var(--transition-base);
}
.mobile-menu.is-open {
  transform: translateX(0);
  visibility: visible;
  transition-delay: 0s;
}
.mobile-menu ul { display: flex; flex-direction: column; gap: var(--space-2); }
.mobile-menu a {
  display: block;
  padding: var(--space-4) var(--space-2);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-white);
  border-bottom: 1px solid var(--color-border-dark);
}
.mobile-menu .btn { margin-top: var(--space-6); }

@media (min-width: 1024px) {
  .nav-primary { display: block; }
  .header-actions .btn-primary { display: inline-flex; }
  .nav-toggle { display: none; }
  .mobile-menu { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: calc(var(--header-height) + var(--space-8)) var(--space-9);
  margin-top: calc(var(--header-height) * -1);
  overflow: hidden;
  background: var(--color-midnight);
  isolation: isolate;
}
@media (min-width: 1024px) {
  .hero { min-height: 92vh; display: flex; align-items: center; padding-block: var(--space-9); }
}
/* Layered depth: a faint schematic grid plus two soft off-axis glows using
   the richer brand gradient stops, sitting behind all hero content. */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(148,163,184,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(80% 70% at 50% 30%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(80% 70% at 50% 30%, #000 40%, transparent 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: -10%;
  z-index: -1;
  background:
    radial-gradient(38% 42% at 82% 12%, rgba(139,92,246,0.30), transparent 70%),
    radial-gradient(46% 50% at 8% 78%, rgba(37,99,235,0.28), transparent 70%),
    radial-gradient(60% 60% at 50% 0%, rgba(6,182,212,0.18), transparent 70%);
  pointer-events: none;
}
.hero .container {
  position: relative;
  display: grid;
  gap: var(--space-8);
  align-items: center;
}
@media (min-width: 1024px) {
  .hero .container { grid-template-columns: 1.05fr 0.95fr; gap: var(--space-7); }
}
.hero-subhead {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-white);
  max-width: 42ch;
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
}
.hero-copy p.lead { max-width: 46ch; margin-block: var(--space-2) var(--space-6); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: var(--space-4); }

.hero h1 .text-gradient {
  display: inline-block;
}

.hero-visual {
  position: relative;
  aspect-ratio: 4 / 3.4;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-dark);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  overflow: hidden;
  box-shadow: 0 40px 80px -40px rgba(6,16,31,0.8), 0 1px 0 rgba(255,255,255,0.06) inset;
}
.hero-visual::before,
.hero-visual::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
  transition: transform 400ms var(--ease);
  transform: translate(calc(var(--tilt-x, 0) * 1px), calc(var(--tilt-y, 0) * 1px));
}
.hero-visual::before {
  width: 60%;
  height: 60%;
  top: -10%;
  right: -10%;
  background: radial-gradient(circle, rgba(139,92,246,0.35), transparent 70%);
}
.hero-visual::after {
  width: 55%;
  height: 55%;
  bottom: -12%;
  left: -12%;
  background: radial-gradient(circle, rgba(37,99,235,0.32), transparent 70%);
  transition-delay: 20ms;
}
.hero-visual svg {
  position: relative;
  width: 100%;
  height: 100%;
  transform: translate(calc(var(--tilt-x, 0) * -0.6px), calc(var(--tilt-y, 0) * -0.6px));
  transition: transform 400ms var(--ease);
}
@media (max-width: 1023px) {
  .hero-visual { aspect-ratio: 4 / 3; }
  /* Simplify rather than just shrink: secondary trace lines and the grid
     pattern are dropped on mobile so the mark and primary flow stay legible. */
  .hero-visual .trace-path.is-secondary,
  .hero-visual .engine-grid,
  .hero-visual .engine-particle { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-visual::before, .hero-visual::after, .hero-visual svg { transition: none; }
}

/* ---------- Page hero (sub-pages) ---------- */
.page-hero {
  padding-block: var(--space-8) var(--space-7);
}
.page-hero .section-head { margin-bottom: 0; }
.breadcrumb {
  font-size: var(--fs-sm);
  color: var(--color-slate);
  margin-bottom: var(--space-4);
}
.breadcrumb a { color: var(--color-slate); }
.breadcrumb a:hover { color: var(--color-white); }

/* ---------- Focus strip ---------- */
.focus-strip {
  border-top: 1px solid var(--color-border-dark);
  border-bottom: 1px solid var(--color-border-dark);
  padding-block: var(--space-6);
}
.focus-strip .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}
.focus-strip h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-white);
  max-width: 340px;
}
.ms-pill-row { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.ms-pill {
  font-size: var(--fs-sm);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-dark);
  color: var(--color-slate);
}

/* ---------- Card grid ---------- */
.card-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
  .card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
}

.card {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
.card:hover { transform: translateY(-3px); border-color: rgba(37,99,235,0.3); }
.section-dark .card, .section-navy .card {
  background: rgba(255,255,255,0.03);
  border-color: var(--color-border-dark);
  box-shadow: var(--shadow-card-dark);
  color: var(--color-white);
}
.section-dark .card p, .section-navy .card p { color: var(--color-slate); }

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-signature-soft);
  margin-bottom: var(--space-4);
}
.card-icon svg { width: 22px; height: 22px; stroke: var(--color-blue); }
.card h3 { margin-bottom: var(--space-2); font-size: 1.15rem; }
.card p { color: var(--color-ink-soft); }

/* ---------- Workflow (How we operate) ---------- */
.workflow {
  display: grid;
  gap: var(--space-5);
  counter-reset: step;
}
@media (min-width: 900px) {
  .workflow { grid-template-columns: repeat(6, 1fr); position: relative; }
  .workflow::before {
    content: "";
    position: absolute;
    top: 22px;
    left: 4%;
    right: 4%;
    height: 2px;
    background: linear-gradient(90deg, rgba(37,99,235,0.5), rgba(6,182,212,0.5), rgba(139,92,246,0.5));
    z-index: 0;
  }
}
.workflow-step {
  position: relative;
  z-index: 1;
  text-align: left;
}
.workflow-step .step-index {
  counter-increment: step;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-midnight);
  border: 1.5px solid var(--color-border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-4);
}
.workflow-step.is-active .step-index {
  border-color: transparent;
  background: var(--gradient-signature);
}
.workflow-step h3 { font-size: 1.05rem; color: var(--color-white); margin-bottom: var(--space-2); }
.workflow-step p { font-size: var(--fs-sm); color: var(--color-slate); }

/* ---------- Differentiation principles ---------- */
.principle-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .principle-grid { grid-template-columns: repeat(2, 1fr); }
}
.principle {
  display: flex;
  gap: var(--space-4);
  padding-block: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}
.principle .num {
  font-weight: 700;
  font-size: 1.5rem;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--color-blue);
}
.principle h3 { margin-bottom: var(--space-2); }
.principle p { color: var(--color-ink-soft); }

/* ---------- Dashboard visual ---------- */
.dashboard-illustration {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-dark);
  background: var(--color-navy-raised);
  padding: var(--space-6);
}
.dashboard-illustration .illustration-label {
  font-size: var(--fs-sm);
  color: var(--color-slate);
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.dashboard-illustration .illustration-label svg { width: 16px; height: 16px; stroke: var(--color-slate); }
.dashboard-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 900px) {
  .dashboard-grid { grid-template-columns: repeat(4, 1fr); }
}
.metric-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}
.metric-card .metric-title { font-size: var(--fs-sm); color: var(--color-slate); margin-bottom: var(--space-3); }
.metric-card .metric-bar {
  height: 6px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.08);
  overflow: hidden;
  margin-bottom: var(--space-2);
}
.metric-card .metric-bar span {
  display: block;
  height: 100%;
  background: var(--gradient-signature);
  width: 0%;
  transition: width 900ms var(--ease);
}
.metric-card.is-visible .metric-bar span { width: var(--fill, 60%); }
.metric-card .metric-value { font-size: 0.8rem; color: var(--color-white); font-weight: 600; }

/* ---------- FAQ accordion ---------- */
.faq-list { max-width: 820px; margin-inline: auto; }
.faq-item {
  border-bottom: 1px solid var(--color-border-light);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-5);
  text-align: left;
  font-weight: 600;
  font-size: var(--fs-lg);
  color: var(--color-navy);
}
.faq-question .plus {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  position: relative;
}
.faq-question .plus::before,
.faq-question .plus::after {
  content: "";
  position: absolute;
  background: var(--color-blue);
  border-radius: var(--radius-pill);
  transition: transform var(--transition-base);
}
.faq-question .plus::before { top: 50%; left: 0; width: 100%; height: 2px; transform: translateY(-50%); }
.faq-question .plus::after { left: 50%; top: 0; height: 100%; width: 2px; transform: translateX(-50%); }
.faq-question[aria-expanded="true"] .plus::after { transform: translateX(-50%) rotate(90deg); opacity: 0; }
.faq-answer {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-base);
}
.faq-answer p { padding-bottom: var(--space-5); color: var(--color-ink-soft); max-width: 68ch; }

/* ---------- Contact form ---------- */
.contact-layout {
  display: grid;
  gap: var(--space-7);
}
@media (min-width: 1024px) {
  .contact-layout { grid-template-columns: 0.9fr 1.1fr; }
}
.form-field { margin-bottom: var(--space-5); }
.form-field label {
  display: block;
  font-weight: 600;
  font-size: var(--fs-sm);
  margin-bottom: var(--space-2);
}
.form-field input,
.form-field textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border-light);
  background: #fff;
  font-size: var(--fs-body);
}
.form-field input:focus, .form-field textarea:focus { border-color: var(--color-blue); }
.form-field textarea { min-height: 140px; resize: vertical; }
.form-error {
  color: var(--color-danger);
  font-size: var(--fs-sm);
  margin-top: var(--space-2);
  display: none;
}
.form-field.has-error input,
.form-field.has-error textarea { border-color: var(--color-danger); }
.form-field.has-error .form-error { display: block; }
.form-status {
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  font-size: var(--fs-sm);
  display: none;
}
.form-status.is-visible { display: block; }
.form-status.success { background: rgba(16,185,129,0.1); color: #067A55; border: 1px solid rgba(16,185,129,0.3); }
.form-status.error { background: rgba(180,35,24,0.08); color: var(--color-danger); border: 1px solid rgba(180,35,24,0.25); }

/* honeypot */
.hp-field { position: absolute; left: -9999px; top: -9999px; opacity: 0; height: 0; width: 0; overflow: hidden; }

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: #050B16;
  color: var(--color-slate);
  padding-block: var(--space-8) var(--space-6);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-signature);
  opacity: 0.6;
}


.footer-grid {
  display: grid;
  gap: var(--space-7);
  grid-template-columns: 1fr;
  padding-bottom: var(--space-7);
  border-bottom: 1px solid var(--color-border-dark);
}
@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .footer-grid { grid-template-columns: 1.2fr repeat(4, 1fr); }
}
.footer-brand p { max-width: 32ch; margin-top: var(--space-4); font-size: var(--fs-sm); }
.footer-col h4 {
  color: var(--color-white);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a { font-size: var(--fs-sm); }
.footer-col a:hover { color: var(--color-white); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  padding-top: var(--space-6);
  font-size: var(--fs-sm);
}

/* ---------- Chatbot ---------- */
.ta-assistant-launcher {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 200;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gradient-signature);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 30px -10px rgba(37,99,235,0.6);
  transition: transform var(--transition-fast);
}
.ta-assistant-launcher:hover { transform: scale(1.05); }
.ta-assistant-launcher svg { width: 26px; height: 26px; }

.ta-assistant-panel {
  position: fixed;
  right: var(--space-5);
  bottom: calc(var(--space-5) + 76px);
  z-index: 200;
  width: min(360px, calc(100vw - 2.5rem));
  max-height: min(560px, calc(100vh - 140px));
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 60px -20px rgba(6,16,31,0.4);
  border: 1px solid var(--color-border-light);
  display: none;
  flex-direction: column;
  overflow: hidden;
}
.ta-assistant-panel.is-open { display: flex; }
.ta-assistant-header {
  background: var(--color-midnight);
  color: #fff;
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: space-between;
}
.ta-assistant-header strong { display: block; }
.ta-assistant-header span { font-size: var(--fs-sm); color: var(--color-slate); }
.ta-assistant-close { width: 32px; height: 32px; color: #fff; }
.ta-assistant-body {
  flex: 1;
  min-height: 180px;
  overflow-y: auto;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.ta-msg { max-width: 88%; padding: var(--space-3) var(--space-4); border-radius: var(--radius-md); font-size: var(--fs-sm); }
.ta-msg.from-bot { background: var(--color-light-surface); align-self: flex-start; }
.ta-msg.from-user { background: var(--color-blue); color: #fff; align-self: flex-end; }
.ta-msg .contact-cta { display: inline-block; margin-top: var(--space-2); font-weight: 600; color: var(--color-blue); }
.ta-msg.from-user .contact-cta { color: #fff; text-decoration: underline; }
/* A single compact, horizontally-scrollable strip rather than stacked
   full-width rows — keeps the chat log above as the dominant area. */
.ta-suggestions {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  gap: var(--space-2);
  padding: 0 var(--space-5) var(--space-4);
  flex-shrink: 0;
}
.ta-suggestions button {
  font-size: 0.7rem;
  line-height: 1.3;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-light);
  color: var(--color-ink-soft);
  white-space: nowrap;
  flex-shrink: 0;
}
.ta-suggestions button:hover { border-color: var(--color-blue); color: var(--color-blue); }
.ta-assistant-form {
  display: flex;
  flex-shrink: 0;
  gap: var(--space-2);
  padding: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}
.ta-assistant-form input {
  flex: 1;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border-light);
}
.ta-assistant-form button {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--gradient-signature);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- Evidence Trace reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

.trace-path {
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  animation: traceDraw 3.2s var(--ease) forwards infinite;
}
@keyframes traceDraw {
  0% { stroke-dashoffset: 600; }
  60% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -600; }
}
@media (prefers-reduced-motion: reduce) {
  .trace-path { animation: none; stroke-dashoffset: 0; }
}

/* Small looping dot travelling along an SVG path (hero Evidence Engine).
   Falls back to a static dot at its cx/cy if the browser doesn't support
   motion-path/offset-path — still a reasonable-looking node marker. */
.engine-particle {
  offset-rotate: 0deg;
  animation: taParticleTravel 4.5s linear infinite;
}
@keyframes taParticleTravel {
  0% { offset-distance: 0%; opacity: 0; }
  8% { opacity: 1; }
  92% { opacity: 1; }
  100% { offset-distance: 100%; opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .engine-particle { animation: none; opacity: 0.7; }
}

/* Soft, slow pulse used sparingly on primary hero/CTA buttons — not a
   constant bounce, a single slow breathing glow behind the button. */
.btn-glow { position: relative; }
.btn-glow::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: inherit;
  background: var(--gradient-signature);
  opacity: 0;
  filter: blur(14px);
  z-index: -1;
  transition: opacity var(--transition-slow);
}
.btn-glow:hover::before, .btn-glow:focus-visible::before { opacity: 0.55; }

/* ---------- Outcome panels (editorial, homepage) ---------- */
.outcome-panels {
  position: relative;
  max-width: 920px;
  margin-inline: auto;
}
.outcome-panels::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, rgba(37,99,235,0.5), rgba(6,182,212,0.5), rgba(139,92,246,0.5));
  display: none;
}
@media (min-width: 768px) {
  .outcome-panels::before { display: block; }
}
.outcome-panel {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: var(--space-5);
  align-items: start;
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  transition: background var(--transition-base);
}
.outcome-panel:first-child { border-top: none; }
.outcome-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  background: radial-gradient(60% 140% at 0% 50%, rgba(37,99,235,0.06), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}
.outcome-panel:hover::after, .outcome-panel:focus-within::after { opacity: 1; }
.outcome-panel .outcome-index {
  position: relative;
  z-index: 1;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1.5px solid var(--color-border-light);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--color-blue);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.outcome-panel:hover .outcome-index, .outcome-panel:focus-within .outcome-index {
  border-color: transparent;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
  background: var(--gradient-signature);
  color: #fff;
}
.outcome-panel h3 { font-size: 1.25rem; margin-bottom: var(--space-2); }
.outcome-panel p { color: var(--color-ink-soft); max-width: 60ch; }

/* ---------- Microsoft section ---------- */
.ms-showcase {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}
@media (min-width: 700px) {
  .ms-showcase { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .ms-showcase { grid-template-columns: repeat(4, 1fr); }
}
.ms-showcase-item {
  padding: var(--space-6) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-dark);
  background: rgba(255,255,255,0.02);
  transition: border-color var(--transition-base), transform var(--transition-base), background var(--transition-base);
}
.ms-showcase-item:hover { border-color: rgba(6,182,212,0.4); transform: translateY(-2px); background: rgba(255,255,255,0.04); }
.ms-showcase-item .ms-icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-4);
}
.ms-showcase-item .ms-icon,
.ms-showcase-item .ms-icon * { stroke: var(--color-cyan); }
.ms-showcase-item h3 { font-size: 1rem; color: var(--color-white); margin-bottom: var(--space-2); }
.ms-showcase-item p { font-size: var(--fs-sm); color: var(--color-slate); }


/* ---------- Utilities ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.mt-0 { margin-top: 0; }
.text-center { text-align: center; }
.stack { display: flex; flex-direction: column; gap: var(--space-4); }
.divider { border: none; border-top: 1px solid var(--color-border-light); margin-block: var(--space-7); }
.review-note {
  font-size: var(--fs-sm);
  color: var(--color-slate);
  border-left: 2px solid var(--color-border-dark);
  padding-left: var(--space-4);
}
.section-surface .review-note, .card .review-note { color: var(--color-ink-soft); border-color: var(--color-border-light); }

.overflow-x-auto { overflow-x: auto; }

/* ---------- Layout utility classes ----------
   These exist so page markup never needs a style="" attribute — the site's
   CSP declares style-src 'self' with no 'unsafe-inline', which browsers
   apply to inline style attributes as well as <style> blocks. Every value
   here matches what previously lived inline; this is a mechanical move,
   not a design change. */
.mt-4 { margin-top: var(--space-4); }   /* 1rem */
.mt-5 { margin-top: var(--space-5); }   /* 1.5rem */
.mt-6 { margin-top: var(--space-6); }   /* 2rem */
.mt-6-5 { margin-top: 2.5rem; }
.mx-auto { margin-inline: auto; }
.max-w-640 { max-width: 640px; }
.max-w-760 { max-width: 760px; }
.max-w-780 { max-width: 780px; }
.h3-size { font-size: var(--fs-h3); }
.page-hero h1, .error-page h1 { font-size: var(--fs-h2); }
.hero-ctas.centered { justify-content: center; margin-top: var(--space-5); }

/* 404 */
.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-block: var(--space-9);
}