/* ============================================================
   NESTEDLOOP — Design System
   Concept: Authoritative AI consultancy — deep navy + electric indigo
   Typography: Instrument Serif (display) + Switzer (body)
   ============================================================ */

/* ── Type Scale ─────────────────────────────────────────── */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);
}

/* ── Spacing ────────────────────────────────────────────── */
:root {
  --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;
}

/* ── Radii / Transitions / Shadows ─────────────────────── */
:root {
  --radius-sm:   0.375rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-full: 9999px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:     cubic-bezier(0.4, 0, 1, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:    1200px;
  --content-full:    100%;
}

/* ── Color Palette — Light Mode ─────────────────────────── */
/* Deep slate surfaces + indigo accent */
:root, [data-theme="light"] {
  /* Surfaces */
  --color-bg:              #f4f5f8;
  --color-surface:         #f8f9fb;
  --color-surface-2:       #ffffff;
  --color-surface-offset:  #eef0f5;
  --color-surface-offset-2:#e6e9f0;
  --color-surface-dynamic: #dde1ea;
  --color-divider:         #d4d8e2;
  --color-border:          #c8cdd9;

  /* Text */
  --color-text:            #0f1523;
  --color-text-muted:      #5a6275;
  --color-text-faint:      #9aa0b0;
  --color-text-inverse:    #f4f5f8;

  /* Primary Accent — Electric Indigo */
  --color-primary:         #3a5bf0;
  --color-primary-hover:   #2947d4;
  --color-primary-active:  #1d35b8;
  --color-primary-highlight: #dce2fd;

  /* Secondary — Slate Navy */
  --color-secondary:       #1a2540;
  --color-secondary-hover: #111b30;

  /* Supporting */
  --color-success:         #1a7a4a;
  --color-success-highlight: #d0ead9;
  --color-warning:         #a05a10;
  --color-warning-highlight: #f0e0ca;
  --color-error:           #c02040;
  --color-error-highlight: #fad4db;

  /* Shadows (cool-toned) */
  --shadow-sm: 0 1px 3px rgba(15, 21, 35, 0.07);
  --shadow-md: 0 4px 16px rgba(15, 21, 35, 0.10);
  --shadow-lg: 0 12px 40px rgba(15, 21, 35, 0.14);
  --shadow-xl: 0 24px 64px rgba(15, 21, 35, 0.18);

  /* Fonts */
  --font-display: 'Instrument Serif', 'Georgia', serif;
  --font-body:    'Switzer', 'Inter', sans-serif;
}

/* ── Color Palette — Dark Mode ──────────────────────────── */
[data-theme="dark"] {
  --color-bg:              #0b0e17;
  --color-surface:         #0f1520;
  --color-surface-2:       #141b28;
  --color-surface-offset:  #111622;
  --color-surface-offset-2:#16202e;
  --color-surface-dynamic: #1e2a3d;
  --color-divider:         #1f2a3c;
  --color-border:          #273347;

  --color-text:            #e0e4ef;
  --color-text-muted:      #7a849a;
  --color-text-faint:      #454f63;
  --color-text-inverse:    #0f1523;

  --color-primary:         #6b84f5;
  --color-primary-hover:   #8498f8;
  --color-primary-active:  #9eaefb;
  --color-primary-highlight: #1e2d5c;

  --color-secondary:       #d0d8f0;
  --color-secondary-hover: #e0e6f8;

  --color-success:         #45b076;
  --color-success-highlight: #152e21;
  --color-warning:         #d48030;
  --color-warning-highlight: #2e1e0a;
  --color-error:           #e05070;
  --color-error-highlight: #2e0e16;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.6);
}

/* System preference fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:              #0b0e17;
    --color-surface:         #0f1520;
    --color-surface-2:       #141b28;
    --color-surface-offset:  #111622;
    --color-surface-offset-2:#16202e;
    --color-surface-dynamic: #1e2a3d;
    --color-divider:         #1f2a3c;
    --color-border:          #273347;
    --color-text:            #e0e4ef;
    --color-text-muted:      #7a849a;
    --color-text-faint:      #454f63;
    --color-text-inverse:    #0f1523;
    --color-primary:         #6b84f5;
    --color-primary-hover:   #8498f8;
    --color-primary-active:  #9eaefb;
    --color-primary-highlight: #1e2d5c;
    --color-secondary:       #d0d8f0;
    --color-secondary-hover: #e0e6f8;
    --color-success:         #45b076;
    --color-success-highlight: #152e21;
    --color-warning:         #d48030;
    --color-warning-highlight: #2e1e0a;
    --color-error:           #e05070;
    --color-error-highlight: #2e0e16;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
    --shadow-xl: 0 24px 64px rgba(0,0,0,0.6);
  }
}

/* ── Layout Utilities ───────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

.container--narrow {
  max-width: var(--content-default);
}

section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

/* ── Header / Nav ───────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow var(--transition-interactive);
}

.site-header--scrolled {
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--space-8);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.nav-logo-text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.nav-links a:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* Mobile menu */
.nav-mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text);
  background: none;
  border: none;
}

.nav-drawer {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 200;
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-4);
}

.nav-drawer.open {
  display: flex;
}

.nav-drawer-close {
  align-self: flex-end;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.nav-drawer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.nav-drawer-links a {
  display: block;
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  transition: background var(--transition-interactive);
}

.nav-drawer-links a:hover {
  background: var(--color-surface-offset);
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn { display: none; }
  .nav-mobile-toggle { display: flex; }
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-body);
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border: 1.5px solid var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn-outline:hover {
  background: var(--color-surface-offset);
  border-color: var(--color-text-muted);
  transform: translateY(-1px);
}

.btn-outline:active {
  transform: translateY(0);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid transparent;
  padding-inline: var(--space-2);
}

.btn-ghost:hover {
  color: var(--color-primary-hover);
}

.btn-lg {
  padding: 0.85rem 1.75rem;
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

/* ── Hero Section ───────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-bg);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

/* Subtle grid pattern */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-divider) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.4;
}

/* Radial gradient bloom */
.hero-bg::after {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 70vw;
  height: 70vw;
  max-width: 900px;
  max-height: 900px;
  background: radial-gradient(ellipse at center,
    color-mix(in oklab, var(--color-primary) 12%, transparent) 0%,
    transparent 65%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3) var(--space-1) var(--space-2);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  line-height: 1.08;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}

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

.hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-10);
  max-width: 52ch;
}

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

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

.hero-diagram {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1;
}

/* ── Trust/Stat Strip ───────────────────────────────────── */
.trust-strip {
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding-block: clamp(var(--space-8), 4vw, var(--space-12));
  background: var(--color-surface);
}

.trust-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.trust-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  text-align: center;
  flex: 1;
  min-width: 120px;
}

.trust-stat-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1;
  letter-spacing: -0.03em;
}

.trust-stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.trust-divider {
  width: 1px;
  height: 40px;
  background: var(--color-divider);
  flex-shrink: 0;
}

/* ── Section Labels ─────────────────────────────────────── */
.section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
}

.section-headline em {
  font-style: italic;
  color: var(--color-primary);
}

.section-intro {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 54ch;
}

/* ── Services Section ───────────────────────────────────── */
.services-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: end;
  margin-bottom: var(--space-16);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.service-card {
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: box-shadow var(--transition-interactive),
              transform var(--transition-interactive),
              border-color var(--transition-interactive),
              background var(--transition-interactive);
  cursor: default;
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  background: var(--color-surface-2);
}

.service-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  flex-shrink: 0;
}

.service-title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.service-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

.service-card.featured {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  grid-column: span 2;
}

[data-theme="dark"] .service-card.featured {
  background: linear-gradient(135deg, var(--color-surface-2) 0%, var(--color-surface-offset-2) 100%);
  border-color: var(--color-border);
}

.service-card.featured .service-title,
.service-card.featured .service-desc {
  color: var(--color-text-inverse);
}

[data-theme="dark"] .service-card.featured .service-title {
  color: var(--color-text);
}

[data-theme="dark"] .service-card.featured .service-desc {
  color: var(--color-text-muted);
}

.service-card.featured .service-icon {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

[data-theme="dark"] .service-card.featured .service-icon {
  background: var(--color-primary-highlight);
  color: var(--color-primary);
}

/* ── Pillars / Approach Section ─────────────────────────── */
.pillars-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.pillars-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(var(--space-16), 8vw, var(--space-32));
  align-items: center;
}

.pillars-visual {
  position: relative;
}

.pillar-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.pillar-step {
  display: flex;
  gap: var(--space-5);
  position: relative;
  padding-bottom: var(--space-8);
}

.pillar-step:last-child {
  padding-bottom: 0;
}

.pillar-step-line {
  position: absolute;
  left: 17px;
  top: 36px;
  bottom: 0;
  width: 2px;
  background: var(--color-divider);
}

.pillar-step:last-child .pillar-step-line {
  display: none;
}

.pillar-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 700;
  color: #fff;
  position: relative;
  z-index: 1;
}

.pillar-body {
  padding-top: var(--space-1);
}

.pillar-title {
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.pillar-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ── Domains Section ────────────────────────────────────── */
.domains-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-12);
}

.domain-card {
  position: relative;
  padding: var(--space-8) var(--space-8) var(--space-10);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  overflow: hidden;
  background: var(--color-surface);
  transition: box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}

.domain-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.domain-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
}

.domain-card:hover::before {
  opacity: 1;
}

.domain-card-products::before {
  background: linear-gradient(135deg,
    color-mix(in oklab, var(--color-primary) 8%, transparent) 0%,
    transparent 60%);
}
.domain-card-services::before {
  background: linear-gradient(135deg,
    color-mix(in oklab, #7c3aed 8%, transparent) 0%,
    transparent 60%);
}
.domain-card-consulting::before {
  background: linear-gradient(135deg,
    color-mix(in oklab, #0ea5e9 8%, transparent) 0%,
    transparent 60%);
}

.domain-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.domain-card-products .domain-label { color: var(--color-primary); }
.domain-card-services .domain-label { color: #7c3aed; }
.domain-card-consulting .domain-label { color: #0ea5e9; }

.domain-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.domain-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-6);
}

.domain-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.domain-tag {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* ── CTA Section ────────────────────────────────────────── */
.cta-section {
  position: relative;
  overflow: hidden;
  background: var(--color-secondary);
  padding-block: clamp(var(--space-20), 10vw, var(--space-32));
}

[data-theme="dark"] .cta-section {
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-border);
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

[data-theme="dark"] .cta-section::before {
  background-image:
    linear-gradient(var(--color-divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-divider) 1px, transparent 1px);
  opacity: 0.4;
}

.cta-bloom {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80vw;
  height: 80vw;
  max-width: 700px;
  max-height: 700px;
  background: radial-gradient(ellipse,
    color-mix(in oklab, var(--color-primary) 25%, transparent) 0%,
    transparent 65%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
}

.cta-headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: #fff;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
}

[data-theme="dark"] .cta-headline {
  color: var(--color-text);
}

.cta-sub {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.72);
  line-height: 1.7;
  margin-bottom: var(--space-10);
  max-width: 48ch;
  margin-inline: auto;
}

[data-theme="dark"] .cta-sub {
  color: var(--color-text-muted);
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.btn-white {
  background: #fff;
  color: var(--color-secondary);
  border: 1.5px solid #fff;
}

.btn-white:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .btn-white {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-outline-white {
  background: transparent;
  color: rgba(255,255,255,0.85);
  border: 1.5px solid rgba(255,255,255,0.3);
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
  color: #fff;
  transform: translateY(-1px);
}

[data-theme="dark"] .btn-outline-white {
  color: var(--color-text);
  border-color: var(--color-border);
}

[data-theme="dark"] .btn-outline-white:hover {
  background: var(--color-surface-offset);
}

/* ── Footer ─────────────────────────────────────────────── */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-top: var(--space-4);
  max-width: 34ch;
}

.footer-col-title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer-attribution a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer-attribution a:hover {
  color: var(--color-primary);
}

/* ── Page-specific: Services Page ───────────────────────── */
.page-hero {
  padding-top: clamp(var(--space-20), 10vw, var(--space-32));
  padding-bottom: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-divider);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-divider) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.35;
}

.page-hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--content-default);
}

.page-hero-headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
  max-width: 16ch;
}

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

.page-hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 56ch;
}

.service-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.service-detail-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-8);
  padding: var(--space-10);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  align-items: start;
  transition: box-shadow var(--transition-interactive),
              border-color var(--transition-interactive),
              transform var(--transition-interactive);
}

.service-detail-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.service-detail-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.service-detail-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-3);
}

.service-detail-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.service-outcomes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.service-outcomes li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.service-outcomes li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 7px;
}

/* ── Page-specific: About ───────────────────────────────── */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: center;
}

.about-headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}

.about-headline em {
  font-style: italic;
  color: var(--color-primary);
}

.about-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-5);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-12);
}

.value-card {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.value-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.value-title {
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.value-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ── Contact Form ───────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(var(--space-12), 6vw, var(--space-24));
  align-items: start;
}

.contact-info-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.contact-info-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

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

.contact-method {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact-method-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-method-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}

.contact-method-value {
  font-size: var(--text-base);
  color: var(--color-text);
  font-weight: 500;
}

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.65rem var(--space-4);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  font-family: var(--font-body);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
  appearance: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 18%, transparent);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-faint);
}

/* ── Scroll Reveal Animations ───────────────────────────── */
.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 80%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }
  .hero-sub { max-width: 100%; margin-inline: auto; }

  .services-intro {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-10);
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-card.featured {
    grid-column: span 2;
  }

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

  .pillars-visual { order: -1; }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

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

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

@media (max-width: 640px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
  .service-card.featured {
    grid-column: span 1;
  }
  .trust-divider { display: none; }
  .trust-grid { justify-content: center; gap: var(--space-6); }
  .trust-stat { min-width: 80px; }
  .footer-grid { grid-template-columns: 1fr; }
  .service-detail-card {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
  .form-row { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
}