/* ==========================================================================
   Anthill Solutions — Stylesheet
   Purple-led, structured, enterprise-grade. No literal imagery.
   ========================================================================== */

:root {
  /* Colour tokens — purple-led palette, calm & authoritative */
  --ink: #180f2c;
  --ink-soft: #4c435e;
  --ink-faint: #7a7189;
  --bg: #faf9fc;
  --surface: #ffffff;
  --surface-alt: #f2eef9;
  --primary: #6f4bae;
  --primary-dark: #4d3480;
  --primary-deep: #241238;
  --line: #e3ddef;
  --line-soft: #ece7f5;
  --accent-line: #b9a3e0;
  --focus: #241238;

  /* Type */
  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;

  /* Layout */
  --max-w: 1180px;
  --radius: 2px;
  --grid-cell: 96px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

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

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.1rem, 4.2vw, 3.4rem); line-height: 1.08; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); line-height: 1.18; }
h3 { font-size: 1.2rem; line-height: 1.3; }

p { margin: 0 0 1em; color: var(--ink-soft); }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

/* Focus visibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* --------------------------------------------------------------------------
   Eyebrow / labels
   -------------------------------------------------------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary-dark);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--primary);
  display: inline-block;
}

/* --------------------------------------------------------------------------
   Header / Nav
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 249, 252, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand img {
  height: 34px;
  width: auto;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.brand-name span { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  position: relative;
  padding: 6px 0;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.nav-links a.active { color: var(--ink); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
  transition: transform 0.2s ease;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 13px 24px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary-dark); }

.btn-on-dark {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.35);
}
.btn-on-dark:hover { border-color: #fff; }

/* --------------------------------------------------------------------------
   Hero + lattice signature
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding: 96px 0 88px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero h1 { margin-bottom: 22px; }

.hero-lede {
  font-size: 1.08rem;
  max-width: 46ch;
  color: var(--ink-soft);
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 46px;
  flex-wrap: wrap;
}

.hero-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--ink-faint);
}
.hero-meta strong { color: var(--ink-soft); font-weight: 600; }
.dot-sep { width: 3px; height: 3px; border-radius: 50%; background: var(--accent-line); display: inline-block; }

.hero-art {
  position: relative;
}
.hero-art svg { width: 100%; height: auto; }

/* --------------------------------------------------------------------------
   Trust / industries strip
   -------------------------------------------------------------------------- */
.strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
  padding: 26px 0;
}
.strip-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.strip-items {
  display: flex;
  gap: 34px;
  flex-wrap: wrap;
}
.strip-items span {
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   Section basics
   -------------------------------------------------------------------------- */
.section {
  padding: 96px 0;
}
.section-alt {
  background: var(--surface-alt);
}
.section-head {
  max-width: 660px;
  margin-bottom: 56px;
}
.section-head p { font-size: 1.02rem; }

.section-foot-link {
  margin-top: 44px;
}

/* --------------------------------------------------------------------------
   Framework — 01–04 sequence (a true ordered pipeline)
   -------------------------------------------------------------------------- */
.framework {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.framework-step {
  background: var(--surface);
  padding: 34px 28px 30px;
  position: relative;
}
.framework-index {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--accent-line);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 22px;
}
.framework-step h3 { margin-bottom: 10px; }
.framework-step p { font-size: 0.92rem; margin-bottom: 0; }
.framework-connector {
  display: none;
}

/* --------------------------------------------------------------------------
   Card grids
   -------------------------------------------------------------------------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 32px 28px;
  border-radius: var(--radius);
}
.card h3 { margin-bottom: 12px; }
.card p { font-size: 0.94rem; margin-bottom: 0; }
.card-mark {
  width: 34px; height: 34px;
  margin-bottom: 20px;
}

/* Differentiator list */
.diff-list {
  border-top: 1px solid var(--line);
}
.diff-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.diff-row h3 { margin: 0; font-size: 1.04rem; }
.diff-row p { margin: 0; font-size: 0.96rem; }

/* --------------------------------------------------------------------------
   Split / about teaser
   -------------------------------------------------------------------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split-art { position: relative; }
.split-art svg { width: 100%; height: auto; }

.stat-row {
  display: flex;
  gap: 40px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--ink);
  display: block;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--ink-faint);
  max-width: 20ch;
}

/* --------------------------------------------------------------------------
   CTA band
   -------------------------------------------------------------------------- */
.cta-band {
  background: var(--primary-deep);
  color: #fff;
  padding: 84px 0;
  position: relative;
  overflow: hidden;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.72); }
.cta-band-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-band-copy { max-width: 560px; }
.cta-band-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cta-lattice {
  position: absolute;
  inset: 0;
  opacity: 0.5;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--primary-deep);
  color: rgba(255,255,255,0.65);
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand img { height: 26px; filter: brightness(0) invert(1); }
.footer-brand span {
  font-family: var(--font-display);
  color: #fff;
  font-weight: 600;
}
.footer-col h4 {
  color: #fff;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col a, .footer-col p {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 12px;
}
.footer-col a:hover { color: #fff; }
.footer-tagline { max-width: 34ch; font-size: 0.92rem; color: rgba(255,255,255,0.55); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 26px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

/* --------------------------------------------------------------------------
   Inner page header (About / Services / Contact)
   -------------------------------------------------------------------------- */
.page-hero {
  padding: 64px 0 72px;
  border-bottom: 1px solid var(--line);
}
.page-hero h1 { max-width: 16ch; }
.page-hero .hero-lede { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   About page specifics
   -------------------------------------------------------------------------- */
.prose {
  max-width: 72ch;
}
.prose p { font-size: 1.02rem; }

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.value-cell {
  background: var(--surface);
  padding: 30px 28px;
}
.value-cell h3 { margin-bottom: 8px; }
.value-cell p { font-size: 0.94rem; margin-bottom: 0; }

.quote-block {
  border-left: 2px solid var(--primary);
  padding: 4px 0 4px 28px;
  margin: 44px 0;
}
.quote-block p {
  font-family: var(--font-display);
  font-size: 1.22rem;
  color: var(--ink);
  font-weight: 500;
  line-height: 1.42;
  margin: 0;
}

/* --------------------------------------------------------------------------
   Services page specifics
   -------------------------------------------------------------------------- */
.portfolio-block {
  padding: 72px 0;
  border-bottom: 1px solid var(--line);
}
.portfolio-head {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
  margin-bottom: 40px;
  align-items: baseline;
}
.portfolio-num {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-line);
}
.portfolio-head h2 { margin-bottom: 8px; }
.portfolio-head p { margin: 0; max-width: 60ch; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.product-cell {
  background: var(--surface);
  padding: 26px 26px 24px;
}
.product-cell h3 { font-size: 1rem; margin-bottom: 8px; }
.product-cell p { font-size: 0.9rem; margin-bottom: 0; }
.product-cell .tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary-dark);
  background: var(--surface-alt);
  padding: 4px 9px;
  border-radius: 2px;
  margin-bottom: 12px;
  font-weight: 600;
}

.deliv-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}
.deliv-list li {
  font-size: 0.88rem;
  color: var(--ink-soft);
  padding-left: 16px;
  position: relative;
  margin-bottom: 6px;
}
.deliv-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 5px; height: 5px;
  background: var(--primary);
}

table.engagement {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
}
table.engagement th, table.engagement td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}
table.engagement th {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
table.engagement td:first-child { font-weight: 600; color: var(--ink); }

.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.industry-card h3 { font-size: 0.98rem; margin-bottom: 14px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.industry-card ul { margin: 0; padding: 0; list-style: none; }
.industry-card li { font-size: 0.88rem; color: var(--ink-soft); margin-bottom: 9px; }

/* --------------------------------------------------------------------------
   Projects page
   -------------------------------------------------------------------------- */
.feature-panel {
  background: var(--primary-deep);
  color: #fff;
  border-radius: var(--radius);
  padding: 56px;
  position: relative;
  overflow: hidden;
}
.feature-panel-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: start;
}
.feature-panel h2 { color: #fff; max-width: 16ch; }
.feature-panel p { color: rgba(255,255,255,0.72); }
.feature-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #c8b6ea;
  margin-bottom: 20px;
}
.feature-status::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #9b7fd4;
  display: inline-block;
}
.feature-lattice {
  position: absolute;
  inset: 0;
  opacity: 0.5;
}
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 32px;
}
.chip {
  font-size: 0.78rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  border: 1px solid rgba(255,255,255,0.25);
  padding: 7px 14px;
  border-radius: 20px;
}
.feature-list {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
}
.feature-list li {
  font-size: 0.94rem;
  color: rgba(255,255,255,0.82);
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
.feature-list li:first-child { padding-top: 0; }
.feature-meta {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  margin-top: 20px;
}

.engagement-card {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 36px;
  border-radius: var(--radius);
}
.engagement-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.engagement-card-head h3 { margin: 0 0 6px; }
.engagement-client { font-size: 0.9rem; color: var(--ink-faint); }
.engagement-period {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary-dark);
  background: var(--surface-alt);
  padding: 6px 12px;
  border-radius: 20px;
  white-space: nowrap;
}
.engagement-card ul { margin: 0 0 22px; padding: 0; list-style: none; }
.engagement-card li {
  font-size: 0.92rem;
  color: var(--ink-soft);
  padding-left: 18px;
  position: relative;
  margin-bottom: 9px;
}
.engagement-card li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 5px; height: 5px;
  background: var(--primary);
}
.env-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.env-chip {
  font-size: 0.76rem;
  color: var(--ink-soft);
  background: var(--surface-alt);
  padding: 6px 12px;
  border-radius: 2px;
}

/* --------------------------------------------------------------------------
   Contact page
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}
.contact-info h3 { margin-top: 30px; margin-bottom: 10px; font-size: 0.95rem; }
.contact-info h3:first-child { margin-top: 0; }
.contact-info p { font-size: 0.94rem; margin-bottom: 4px; }
.contact-info .muted { color: var(--ink-faint); font-size: 0.85rem; margin-top: 24px; }

.field {
  margin-bottom: 22px;
}
.field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.96rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 13px 14px;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--primary);
  outline: none;
}
.field textarea { resize: vertical; min-height: 130px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.form-note {
  font-size: 0.82rem;
  color: var(--ink-faint);
  margin-top: 18px;
}

.form-status {
  display: none;
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-bottom: 20px;
}
.form-status.show { display: block; }
.form-status.ok { background: #eef7ee; color: #2d6a2d; border: 1px solid #cfe8cf; }
.form-status.err { background: #fbeeee; color: #8a2d2d; border: 1px solid #f0cccc; }

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 420px; margin: 0 auto 12px; }
  .split { grid-template-columns: 1fr; }
  .split-art { order: -1; max-width: 420px; margin: 0 auto; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .framework { grid-template-columns: 1fr 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .industry-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .feature-panel-inner { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .feature-panel { padding: 32px 24px; }
  .container { padding: 0 22px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta .btn-ghost { display: none; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .framework { grid-template-columns: 1fr; }
  .diff-row { grid-template-columns: 1fr; gap: 8px; }
  .strip-inner { flex-direction: column; align-items: flex-start; }
  .industry-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .portfolio-head { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .cta-band-inner { flex-direction: column; align-items: flex-start; }
  .section { padding: 64px 0; }
  .hero { padding: 56px 0 56px; }
}

/* Mobile nav panel */
.nav-mobile {
  display: none;
  position: fixed;
  inset: 84px 0 0 0;
  background: var(--bg);
  z-index: 99;
  padding: 32px;
  border-top: 1px solid var(--line);
}
.nav-mobile.open { display: block; }
.nav-mobile a {
  display: block;
  font-family: var(--font-display);
  font-size: 1.4rem;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.nav-mobile .btn { margin-top: 28px; width: 100%; }