/* ============================================================
   GRAPHOMY — Design System
   Color strategy: Committed (deep forest green as dominant)
   Physical scene: A senior regulatory affairs director reviewing
   a compliance dossier in a quiet, well-lit office — precise,
   authoritative, unhurried.
   Fonts: Libre Baskerville (display) + Figtree (body/UI)
   ============================================================ */

/* ── Tokens ─────────────────────────────────────────────── */
:root {
  /* Palette — black & white with warm neutral tones */
  --ink:          oklch(10% 0.004 0);     /* near-black */
  --ink-2:        oklch(24% 0.004 0);     /* dark text secondary */
  --ink-3:        oklch(42% 0.004 0);     /* muted text */
  --ink-4:        oklch(58% 0.004 0);     /* placeholder / disabled */
  --surface:      oklch(98% 0.003 90);    /* warm off-white */
  --surface-2:    oklch(94% 0.004 90);    /* slightly deeper warm white */
  --surface-3:    oklch(90% 0.005 90);    /* section tint */
  --green:        oklch(18% 0.004 0);     /* primary accent = near-black */
  --green-light:  oklch(30% 0.004 0);     /* hover state */
  --green-dim:    oklch(18% 0.004 0 / 0.10); /* tinted bg */
  --green-dark:   oklch(12% 0.004 0);     /* darker accent */
  --gold:         oklch(58% 0.004 0);     /* neutral mid-tone */
  --border:       oklch(86% 0.004 90);    /* subtle border */
  --border-strong:oklch(74% 0.004 90);    /* stronger border */

  /* Dark section */
  --dark-bg:      oklch(10% 0.004 0);
  --dark-surface: oklch(15% 0.004 0);
  --dark-border:  oklch(22% 0.004 0);
  --dark-text:    oklch(90% 0.003 90);
  --dark-text-2:  oklch(65% 0.003 90);

  /* Typography */
  --font-display: 'Libre Baskerville', Georgia, serif;
  --font-body:    'Figtree', system-ui, sans-serif;

  /* Scale — fluid with clamp */
  --text-xs:   clamp(0.7rem,  0.65rem + 0.25vw, 0.75rem);
  --text-sm:   clamp(0.82rem, 0.78rem + 0.2vw,  0.9rem);
  --text-base: clamp(0.95rem, 0.9rem  + 0.25vw, 1.05rem);
  --text-md:   clamp(1.05rem, 0.95rem + 0.5vw,  1.2rem);
  --text-lg:   clamp(1.2rem,  1rem    + 1vw,    1.5rem);
  --text-xl:   clamp(1.5rem,  1.1rem  + 2vw,    2.2rem);
  --text-2xl:  clamp(2rem,    1.3rem  + 3.5vw,  3.4rem);
  --text-3xl:  clamp(2.6rem,  1.5rem  + 5.5vw,  5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --max-w: 1200px;
  --nav-h: 68px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
  --dur-fast: 160ms;
  --dur-base: 280ms;
  --dur-slow: 480ms;
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--ink);
  background: var(--surface);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── Typography helpers ──────────────────────────────────── */
.section-num {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--green);
}

.section-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: var(--space-6);
}

.section-label-light {
  color: var(--dark-text-2);
}

.section-label-light .section-num {
  color: oklch(65% 0.003 90);
}

.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.section-sub {
  font-size: var(--text-md);
  color: var(--ink-3);
  line-height: 1.7;
  max-width: 56ch;
  margin-top: var(--space-5);
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.75rem 1.6rem;
  border-radius: 3px;
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--green);
  color: oklch(97% 0.006 90);
  border: 1.5px solid var(--green);
}

.btn-primary:hover {
  background: var(--green-light);
  border-color: var(--green-light);
  box-shadow: 0 4px 16px oklch(18% 0.004 0 / 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--border-strong);
}

.btn-ghost:hover {
  border-color: var(--ink-3);
  background: var(--surface-2);
}

.btn-outline {
  background: transparent;
  color: var(--dark-text);
  border: 1.5px solid oklch(38% 0.004 0);
}

.btn-outline:hover {
  background: oklch(22% 0.004 0);
}

/* ── Navigation ──────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: oklch(97% 0.006 90 / 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out);
}

.site-header.scrolled {
  border-bottom-color: var(--border);
  background: oklch(97% 0.006 90 / 0.97);
}

.nav {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-8);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--ink);
  transition: opacity var(--dur-fast);
}

.brand:hover { opacity: 0.75; }

.brand-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--ink-2);
  transition: color var(--dur-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}

.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-cta {
  background: var(--green);
  color: oklch(97% 0.006 90) !important;
  padding: 0.5rem 1.2rem;
  border-radius: 3px;
  font-weight: 600 !important;
  transition: background var(--dur-fast) var(--ease-out) !important;
}

.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--green-light) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-base);
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-6.5px) rotate(-45deg);
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  background: oklch(10% 0.004 0 / 0.45);
  z-index: 90;
  backdrop-filter: blur(2px);
}

/* ── Section scaffolding ─────────────────────────────────── */
.section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
}

.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.section-header-row {
  margin-bottom: clamp(var(--space-12), 5vw, var(--space-20));
}

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--nav-h);
  background: var(--surface);
  position: relative;
  overflow: hidden;
}

/* Subtle geometric background texture */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 70% 40%, oklch(10% 0.004 0 / 0.04) 0%, transparent 55%),
    radial-gradient(circle at 20% 80%, oklch(10% 0.004 0 / 0.03) 0%, transparent 45%);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(var(--space-16), 8vw, var(--space-24)) var(--space-8) var(--space-12);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  width: 100%;
}

.hero-left {
  max-width: 580px;
}

.hero-domain {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.hero-domain::before {
  content: '';
  display: block;
  width: 28px;
  height: 1.5px;
  background: var(--green);
}

.hero-headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: var(--space-8);
}

.hero-headline em {
  font-style: italic;
  color: var(--ink);
}

.hero-body {
  font-size: var(--text-md);
  color: var(--ink-3);
  line-height: 1.75;
  max-width: 58ch;
  margin-bottom: var(--space-10);
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Hero graph visual */
.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.graph-canvas {
  position: relative;
  width: 100%;
  max-width: 520px;
}

.graph-canvas canvas {
  width: 100%;
  height: auto;
  display: block;
}

.graph-labels {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.graph-label {
  position: absolute;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.3rem 0.65rem;
  border-radius: 2px;
  white-space: nowrap;
  letter-spacing: 0.02em;
  box-shadow: 0 2px 8px oklch(10% 0.004 0 / 0.08);
}

/* Label positions — tuned to match canvas node positions */
.gl-pv       { top: 12%;  left: 38%; transform: translateX(-50%); }
.gl-clinical { top: 62%;  left: 14%; transform: translateX(-50%); }
.gl-quality  { top: 62%;  left: 62%; transform: translateX(-50%); }
.gl-vendor   { top: 38%;  left: 82%; transform: translateX(-50%); }
.gl-custom   { top: 38%;  left: 18%; transform: translateX(-50%); }

/* Hero proof strip */
.hero-proof {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-8) var(--space-8) var(--space-12);
  display: flex;
  align-items: center;
  gap: 0;
  border-top: 1px solid var(--border);
}

.proof-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  padding: var(--space-4) var(--space-6);
}

.proof-num {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--green);
  letter-spacing: 0.08em;
  flex-shrink: 0;
}

.proof-text {
  font-size: var(--text-sm);
  color: var(--ink-2);
  font-weight: 500;
}

.proof-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
  flex-shrink: 0;
}

/* ── About ───────────────────────────────────────────────── */
.about-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.about-section .section-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: start;
}

.about-left {
  position: sticky;
  top: calc(var(--nav-h) + var(--space-8));
}

.about-left .section-heading {
  font-size: var(--text-xl);
  margin-top: var(--space-4);
}

.about-lead {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--ink-2);
  line-height: 1.6;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--border);
}

.about-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-bottom: var(--space-10);
}

.about-body p {
  color: var(--ink-2);
  line-height: 1.75;
  max-width: 65ch;
}

.about-principles {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.principle {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--border);
}

.principle:last-child {
  border-bottom: 1px solid var(--border);
}

.principle svg {
  width: 18px;
  height: 18px;
  color: var(--green);
  flex-shrink: 0;
  margin-top: 2px;
}

.principle p {
  font-size: var(--text-sm);
  color: var(--ink-2);
  line-height: 1.6;
}

/* ── Expertise ───────────────────────────────────────────── */
.expertise-section {
  background: var(--surface-2);
  border-top: 1px solid var(--border);
}

.expertise-blocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-1);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.expertise-block {
  background: var(--surface);
  transition: background var(--dur-base) var(--ease-out);
}

.expertise-block:hover {
  background: var(--surface);
}

.expertise-block-inner {
  padding: clamp(var(--space-8), 4vw, var(--space-12));
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  border-right: 1px solid var(--border);
}

.expertise-block:last-child .expertise-block-inner {
  border-right: none;
}

.expertise-num {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 700;
  color: var(--border);
  line-height: 1;
  letter-spacing: -0.04em;
  transition: color var(--dur-base) var(--ease-out);
}

.expertise-block:hover .expertise-num {
  color: oklch(74% 0.004 90);
}

.expertise-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.expertise-content p {
  color: var(--ink-3);
  line-height: 1.75;
  margin-bottom: var(--space-6);
  max-width: 52ch;
}

.expertise-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.expertise-list li {
  font-size: var(--text-sm);
  color: var(--ink-2);
  padding-left: var(--space-5);
  position: relative;
  line-height: 1.5;
}

.expertise-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 12px;
  height: 1.5px;
  background: var(--green);
}

/* ── Services ────────────────────────────────────────────── */
.services-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.services-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
}

.service-featured {
  background: var(--dark-bg);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  grid-row: span 2;
}

.service-featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--green);
}

.service-featured-inner {
  padding: clamp(var(--space-8), 4vw, var(--space-12));
  height: 100%;
  display: flex;
  flex-direction: column;
}

.service-featured .service-kicker {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: oklch(65% 0.003 90);
  margin-bottom: var(--space-4);
  display: block;
}

.service-featured h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--dark-text);
  margin-bottom: var(--space-5);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.service-featured p {
  color: var(--dark-text-2);
  line-height: 1.75;
  flex: 1;
  margin-bottom: var(--space-8);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: oklch(65% 0.003 90);
  transition: gap var(--dur-fast) var(--ease-out),
              color var(--dur-fast);
  margin-top: auto;
}

.service-link:hover {
  gap: var(--space-3);
  color: oklch(80% 0.003 90);
}

.services-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.service-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: var(--space-6) var(--space-6);
  transition: border-color var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out);
}

.service-card:hover {
  border-color: var(--green);
  background: var(--surface);
}

.service-kicker {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: var(--space-3);
  display: block;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.service-card p {
  font-size: var(--text-sm);
  color: var(--ink-3);
  line-height: 1.7;
}

/* ── Process ─────────────────────────────────────────────── */
.process-section {
  background: var(--surface-3);
  border-top: 1px solid var(--border);
}

.process-track {
  position: relative;
}

.process-line {
  position: absolute;
  top: 28px;
  left: calc(var(--space-8) + 28px);
  right: calc(var(--space-8) + 28px);
  height: 1px;
  background: var(--border-strong);
  z-index: 0;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  position: relative;
  z-index: 1;
}

.process-step {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.step-marker {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out);
}

.process-step:hover .step-marker {
  border-color: var(--green);
  background: var(--green-dim);
}

.step-num {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--green);
  letter-spacing: 0.08em;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.step-content p {
  font-size: var(--text-sm);
  color: var(--ink-3);
  line-height: 1.7;
}

/* ── Approach ────────────────────────────────────────────── */
.approach-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.approach-card {
  padding: clamp(var(--space-8), 4vw, var(--space-10));
  border-right: 1px solid var(--border);
  transition: background var(--dur-base) var(--ease-out);
}

.approach-card:last-child {
  border-right: none;
}

.approach-card:hover {
  background: var(--surface-2);
}

.approach-num {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 4rem);
  font-weight: 700;
  color: var(--border);
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-6);
  transition: color var(--dur-base) var(--ease-out);
}

.approach-card:hover .approach-num {
  color: oklch(74% 0.004 90);
}

.approach-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.approach-card p {
  font-size: var(--text-sm);
  color: var(--ink-3);
  line-height: 1.75;
}

/* ── Why Graphomy ────────────────────────────────────────── */
.why-section {
  background: var(--dark-bg);
  border-top: 1px solid var(--dark-border);
}

.why-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: start;
}

.why-heading {
  color: var(--dark-text);
  font-size: var(--text-2xl);
}

.why-body {
  color: var(--dark-text-2);
  line-height: 1.75;
  margin-top: var(--space-6);
  max-width: 52ch;
}

.why-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-top: var(--space-4);
}

.why-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--dark-border);
  font-size: var(--text-md);
  color: var(--dark-text);
  font-weight: 400;
  transition: color var(--dur-fast);
}

.why-item:first-child {
  border-top: 1px solid var(--dark-border);
}

.why-item:hover {
  color: oklch(96% 0.003 90);
}

.why-check {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: oklch(100% 0 0 / 0.12);
  border: 1px solid oklch(100% 0 0 / 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: oklch(80% 0.003 90);
}

.why-check svg {
  width: 12px;
  height: 12px;
}

/* ── Contact ─────────────────────────────────────────────── */
.contact-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: start;
}

.contact-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-top: var(--space-4);
}

.contact-body {
  color: var(--ink-3);
  line-height: 1.75;
  margin-bottom: var(--space-8);
  max-width: 52ch;
}

.contact-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
  background: var(--dark-bg);
  border-top: 1px solid var(--dark-border);
  padding: var(--space-10) 0;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--dark-text);
}

.footer-logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
  opacity: 0.85;
  filter: invert(1);
}

.footer-name {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--dark-text);
}

.footer-tagline {
  font-size: var(--text-xs);
  color: var(--dark-text-2);
  margin-top: 2px;
  letter-spacing: 0.04em;
}

.footer-nav {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: var(--text-sm);
  color: var(--dark-text-2);
  transition: color var(--dur-fast);
}

.footer-nav a:hover {
  color: var(--dark-text);
}

/* ── Reveal animations ───────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 80ms; }
.reveal-delay-2 { transition-delay: 160ms; }
.reveal-delay-3 { transition-delay: 240ms; }
.reveal-delay-4 { transition-delay: 320ms; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .hero-right {
    display: none;
  }

  .hero-proof {
    flex-wrap: wrap;
    gap: var(--space-4);
  }

  .proof-divider { display: none; }

  .proof-item {
    flex: 0 0 auto;
    padding: var(--space-3) 0;
  }

  .about-section .section-inner {
    grid-template-columns: 1fr;
  }

  .about-left {
    position: static;
  }

  .expertise-blocks {
    grid-template-columns: 1fr;
  }

  .expertise-block-inner {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .expertise-block:last-child .expertise-block-inner {
    border-bottom: none;
  }

  .services-layout {
    grid-template-columns: 1fr;
  }

  .service-featured {
    grid-row: auto;
  }

  .services-secondary {
    grid-template-columns: 1fr 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr 1fr;
  }

  .process-line {
    display: none;
  }

  .approach-grid {
    grid-template-columns: 1fr;
  }

  .approach-card {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .approach-card:last-child {
    border-bottom: none;
  }

  .why-layout {
    grid-template-columns: 1fr;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-h: 60px;
  }

  .nav {
    padding: 0 var(--space-5);
  }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4) 0;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--dur-base) var(--ease-out),
                opacity var(--dur-base);
    z-index: 95;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
    border-bottom: 1px solid var(--border);
  }

  .nav-links a::after { display: none; }

  .nav-links a:last-child {
    border-bottom: none;
  }

  .nav-cta {
    margin: var(--space-4) var(--space-6) 0;
    text-align: center;
    border-radius: 3px;
  }

  .nav-toggle {
    display: flex;
  }

  .section-inner {
    padding: 0 var(--space-5);
  }

  .hero-inner {
    padding: var(--space-12) var(--space-5) var(--space-8);
  }

  .hero-proof {
    padding: var(--space-6) var(--space-5) var(--space-8);
  }

  .services-secondary {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-6);
    padding: 0 var(--space-5);
  }

  .footer-nav {
    gap: var(--space-4);
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .contact-actions {
    flex-direction: column;
  }

  .contact-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ── Focus styles (accessibility) ───────────────────────── */
:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Back to Top — on light contact section background */
.btn-back-top {
  background: transparent;
  color: var(--ink-2);
  border: 1.5px solid var(--border-strong);
}

.btn-back-top:hover {
  background: var(--surface-2);
  border-color: var(--ink-3);
  color: var(--ink);
}

/* ── Selection ───────────────────────────────────────────── */
::selection {
  background: oklch(10% 0.004 0 / 0.15);
  color: var(--ink);
}