/* ============================================
   GHMS Landing Page — Complete Stylesheet (Rewritten)
   Design System: Navy-Blue Corporate Tech
   Aligned with actual HTML class names
   ============================================ */

/* ---------- 1. Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400&display=swap');

/* ---------- 2. CSS Custom Properties ---------- */
:root {
  /* Brand Palette */
  --ghms-navy: #1C3870;
  --ghms-blue: #2563EB;
  --ghms-light-blue: #3B82F6;
  --ghms-sky: #93C5FD;
  --ghms-dark: #0F172A;
  --ghms-charcoal: #1E293B;
  --ghms-slate: #334155;
  --ghms-light: #F1F5F9;
  --ghms-white: #FFFFFF;
  --ghms-accent-green: #65A30D;
  --ghms-accent-coral: #F97316;
  --ghms-border: #E2E8F0;
  --ghms-shadow: rgba(15, 23, 42, 0.08);

  /* WhatsApp */
  --ghms-whatsapp: #25D366;

  /* Typography Scale */
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  --text-h1: 40px;
  --text-h2: 28px;
  --text-h3: 18px;
  --text-body: 16px;
  --text-small: 14px;
  --text-caption: 12px;

  --lh-body: 1.6;
  --lh-heading: 1.2;

  /* Spacing */
  --section-pad: 80px;
  --container-max: 1200px;
  --container-pad: 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Z-index layers */
  --z-fab: 100;
  --z-nav: 90;
  --z-modal: 200;
}

/* ---------- 3. CSS Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: var(--lh-body);
  color: var(--ghms-slate);
  background-color: var(--ghms-white);
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------- 4. Keyframes & Animations ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* Utility: animate on scroll (class added via JS) */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* ---------- 5. Container ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  width: 100%;
}

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: var(--text-body);
  line-height: 1;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--ghms-blue);
  color: var(--ghms-white);
  border: 2px solid var(--ghms-blue);
}

.btn--primary:hover {
  background-color: var(--ghms-navy);
  border-color: var(--ghms-navy);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn--outline {
  background-color: transparent;
  color: var(--ghms-blue);
  border: 2px solid var(--ghms-blue);
}

.btn--outline:hover {
  background-color: var(--ghms-blue);
  color: var(--ghms-white);
  transform: translateY(-1px);
}

/* Ghost variant (used inside hero on dark bg) */
.btn--ghost {
  background-color: transparent;
  color: var(--ghms-white);
  border: 2px solid var(--ghms-white);
}

.btn--ghost:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.btn--large {
  padding: 16px 32px;
  font-size: var(--text-h3);
}

/* ---------- 7. Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100%;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: var(--text-h3);
  color: var(--ghms-white);
  transition: color var(--transition-base);
}

.navbar__logo img {
  height: 36px;
  width: auto;
}

.logo-img {
  height: auto;
  width: auto;
  max-height: 40px;
}

/* Nav links */
.navbar__menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.navbar__link {
  font-weight: 500;
  font-size: var(--text-small);
  color: var(--ghms-white);
  opacity: 0.9;
  position: relative;
  transition: opacity var(--transition-fast), color var(--transition-base);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: currentColor;
  transition: width var(--transition-fast);
}

.navbar__link:hover {
  opacity: 1;
}

.navbar__link:hover::after {
  width: 100%;
}

/* Hamburger (mobile) */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: calc(var(--z-nav) + 1);
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--ghms-white);
  transition: all var(--transition-fast);
  border-radius: 1px;
}

/* Scrolled state */
.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--ghms-border);
}

.navbar.scrolled .navbar__logo,
.navbar.scrolled .navbar__link {
  color: var(--ghms-slate);
}

.navbar.scrolled .navbar__toggle span {
  background-color: var(--ghms-slate);
}

/* Mobile menu panel */
.navbar__mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background-color: var(--ghms-white);
  padding: 16px var(--container-pad) 24px;
  box-shadow: 0 8px 24px var(--ghms-shadow);
  border-top: 1px solid var(--ghms-border);
  animation: fadeIn 0.2s ease;
}

.navbar__mobile-menu .navbar__link {
  color: var(--ghms-slate);
  padding: 12px 0;
  font-size: var(--text-body);
  border-bottom: 1px solid var(--ghms-border);
  opacity: 1;
}

.navbar__mobile-menu .navbar__link:last-child {
  border-bottom: none;
}

/* Menu open state */
.navbar.is-open .navbar__mobile-menu {
  display: flex;
}

.navbar.is-open .navbar__toggle span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar.is-open .navbar__toggle span:nth-child(2) {
  opacity: 0;
}

.navbar.is-open .navbar__toggle span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- 8. Hero Section ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: max(100vh, 600px);
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--ghms-navy) 0%, var(--ghms-blue) 100%);
  color: var(--ghms-white);
  overflow: hidden;
}

/* Decorative subtle pattern overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 80%, rgba(255,255,255,0.04) 0%, transparent 40%),
                    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.03) 0%, transparent 35%);
  pointer-events: none;
}

/* Dot grid pattern */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.15;
  background-image: radial-gradient(circle, rgba(255,255,255,0.4) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.hero__container {
  position: relative;
  z-index: 2;
  padding-top: 72px;
  padding-bottom: 80px;
}

.hero__content {
  max-width: 680px;
  animation: fadeInUp 0.8s ease both;
}

.hero__brand {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ghms-sky);
  margin-bottom: 16px;
}

.hero__title {
  font-size: var(--text-h1);
  font-weight: 700;
  line-height: var(--lh-heading);
  color: var(--ghms-white);
  margin-bottom: 20px;
}

.hero__headline {
  display: block;
}

.hero__subtitle {
  font-size: var(--text-body);
  line-height: var(--lh-body);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
  max-width: 520px;
}

.hero__ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- 9. Section Base ---------- */
.section {
  padding: var(--section-pad) 0;
}

.about,
.methodology,
.services,
.metrics {
  /* section wrappers use .section base; additional overrides here if needed */
}

.section__title {
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: var(--lh-heading);
  color: var(--ghms-charcoal);
  margin-bottom: 12px;
}

.section__text {
  font-size: var(--text-body);
  color: var(--ghms-slate);
  line-height: var(--lh-body);
}

/* ---------- 10. About Section ---------- */
.about__header {
  text-align: center;
  margin-bottom: 48px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.about__body {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 48px;
}

.about__body .section__text {
  margin-bottom: 16px;
}

.about__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 48px;
}

/* Feature cards (inside about__grid) */
.card--feature {
  background: var(--ghms-white);
  border: 1px solid var(--ghms-border);
  border-radius: 12px;
  padding: 24px 16px;
  text-align: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card--feature:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--ghms-shadow);
}

.card--feature .card__icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
  color: var(--ghms-blue);
}

.card--feature .card__icon svg {
  width: 100%;
  height: 100%;
}

.card--feature .card__title {
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--ghms-charcoal);
  line-height: 1.3;
  margin-bottom: 0;
}

.card--feature .card__body {
  display: none;
}

/* ---------- 11. Services Section ---------- */
.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  /* Base card — variants define specific styles */
}

/* Service cards */
.card--service {
  background: var(--ghms-white);
  border: 1px solid var(--ghms-border);
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 2px 8px var(--ghms-shadow);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card--service:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
}

.card--service .card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  color: var(--ghms-blue);
}

.card--service .card__icon svg {
  width: 24px;
  height: 24px;
  stroke-width: 1.5;
}

.card--service .card__title {
  font-size: var(--text-h3);
  font-weight: 600;
  color: var(--ghms-charcoal);
  margin-bottom: 10px;
  line-height: var(--lh-heading);
}

.card--service .card__body {
  font-size: var(--text-small);
  color: var(--ghms-slate);
  line-height: var(--lh-body);
}

/* ---------- 12. Methodology Section ---------- */
.methodology__steps {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  position: relative;
  padding-top: 16px;
}

/* Dotted connector line (desktop) */
.methodology__steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 60px;
  right: 60px;
  height: 2px;
  border-top: 2px dotted var(--ghms-sky);
  z-index: 0;
}

.step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--ghms-blue);
  color: var(--ghms-white);
  font-family: var(--font-mono);
  font-size: var(--text-h3);
  font-weight: 400;
  margin-bottom: 16px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.step__title {
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--ghms-charcoal);
  margin-bottom: 6px;
  line-height: 1.3;
}

.step__body {
  font-size: var(--text-small);
  color: var(--ghms-slate);
  line-height: var(--lh-body);
}

/* Technologies list */
.methodology__tech {
  margin-top: 48px;
  text-align: center;
}

.methodology__tech-label {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ghms-blue);
  margin-bottom: 12px;
}

.methodology__tech-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 16px;
  font-size: var(--text-small);
  color: var(--ghms-slate);
}

.methodology__tech-list li {
  background: var(--ghms-light);
  border: 1px solid var(--ghms-border);
  border-radius: 6px;
  padding: 6px 12px;
}

.methodology__footer {
  text-align: center;
  margin-top: 32px;
  font-size: var(--text-small);
  color: var(--ghms-slate);
}

/* ---------- 13. Cases Section ---------- */
.cases {
  background: linear-gradient(135deg, var(--ghms-navy) 0%, var(--ghms-charcoal) 100%);
  color: var(--ghms-white);
}

.cases .section__title {
  color: var(--ghms-white);
}

.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* Case cards */
.card--case {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 32px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.card--case:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.12);
}

.card--case .card__title {
  font-size: var(--text-h3);
  font-weight: 600;
  color: var(--ghms-white);
  margin-bottom: 16px;
  line-height: var(--lh-heading);
}

.case__detail {
  margin-bottom: 12px;
}

.case__detail:last-child {
  margin-bottom: 0;
}

.case__label {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ghms-sky);
  margin-bottom: 4px;
}

.case__text {
  font-size: var(--text-small);
  color: rgba(255, 255, 255, 0.7);
  line-height: var(--lh-body);
}

/* ---------- 14. Metrics Section ---------- */
.metric {
  background: var(--ghms-white);
  border: 1px solid var(--ghms-border);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 2px 8px var(--ghms-shadow);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.metric:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--ghms-shadow);
}

.metrics__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.metric__icon {
  width: 32px;
  height: 32px;
  margin: 0 auto 12px;
  color: var(--ghms-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.metric__icon svg {
  width: 100%;
  height: 100%;
}

.metric__value {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 400;
  color: var(--ghms-navy);
  line-height: 1;
  margin-bottom: 8px;
}

.metric__label {
  font-size: 13px;
  color: var(--ghms-slate);
  font-weight: 500;
}

/* ---------- 15. Contact Section ---------- */
.contact {
  background-color: var(--ghms-light);
}

.contact__wrapper {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: stretch;
}

.contact__card {
  background: var(--ghms-white);
  border: 1px solid var(--ghms-border);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 2px 8px var(--ghms-shadow);
}

/* Card principal (CTA) */
.contact__card--cta {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
}

.contact__title {
  font-size: var(--text-h2);
  font-weight: 600;
  color: var(--ghms-charcoal);
  line-height: var(--lh-heading);
  margin-bottom: 16px;
}

.contact__text {
  font-size: var(--text-body);
  color: var(--ghms-slate);
  line-height: var(--lh-body);
  margin-bottom: 12px;
}

.contact__highlight {
  font-size: var(--text-body);
  font-weight: 600;
  color: var(--ghms-navy);
  margin-bottom: 28px;
}

.contact__btn {
  align-self: flex-start;
}

.contact__btn svg {
  flex-shrink: 0;
}

/* Card secundario (info) */
.contact__card--info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact__subtitle {
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--ghms-charcoal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ghms-border);
}

.contact__card--info .contact__channels {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact__card--info .contact__channel {
  display: flex;
  align-items: center;
  gap: 12px;
}

.contact__card--info .contact__icon {
  width: 32px;
  height: 32px;
  color: var(--ghms-blue);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ghms-light);
  border-radius: 8px;
}

.contact__card--info .contact__icon svg {
  width: 16px;
  height: 16px;
}

.contact__card--info .contact__info {
  text-align: left;
}

.contact__card--info .contact__label {
  font-size: 11px;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
  line-height: 1;
}

.contact__card--info .contact__value {
  font-size: var(--text-small);
  color: var(--ghms-blue);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.contact__card--info .contact__value:hover {
  color: var(--ghms-navy);
}

/* ---------- 16. Footer ---------- */
.footer {
  background-color: var(--ghms-dark);
  padding: 48px 0 24px;
  text-align: center;
}

.footer__container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.footer__brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 700;
  font-size: var(--text-h3);
  color: var(--ghms-white);
}

.footer__name {
  font-weight: 700;
  color: var(--ghms-white);
}

.footer__tagline {
  font-size: var(--text-small);
  color: rgba(255, 255, 255, 0.8);
}

.footer__copy {
  font-size: var(--text-caption);
  color: #64748B;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 20px;
  margin: 8px 0;
}

.footer__link {
  font-size: var(--text-small);
  color: #94A3B8;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--ghms-white);
}

/* ---------- 17. WhatsApp FAB ---------- */
.fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-fab);
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  animation: scaleIn 0.4s ease both;
}

.fab svg {
  width: 28px;
  height: 28px;
}

.fab:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.fab--whatsapp {
  background-color: var(--ghms-whatsapp);
  color: var(--ghms-white);
}

/* ---------- 18. Responsive: Tablet (1024px) ---------- */
@media (max-width: 1024px) {
  :root {
    --text-h1: 36px;
    --text-h2: 24px;
  }

  .about__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .services__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .metrics__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }

  .methodology__steps::before {
    left: 40px;
    right: 40px;
  }
}

/* ---------- 19. Responsive: Mobile (768px) ---------- */
@media (max-width: 768px) {
  :root {
    --text-h1: 32px;
    --text-h2: 22px;
    --text-h3: 16px;
    --section-pad: 56px;
    --container-pad: 20px;
  }

  /* Navbar mobile */
  .navbar__menu {
    display: none;
  }

  .navbar__toggle {
    display: flex;
  }

  /* Hero mobile */
  .hero__container {
    padding-top: 96px;
    padding-bottom: 60px;
  }

  .hero__title {
    font-size: var(--text-h1);
  }

  .hero__ctas {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__ctas .btn {
    width: 100%;
    max-width: 320px;
  }

  /* Section header */
  .about__header {
    margin-bottom: 36px;
  }

  /* About */
  .about__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 36px;
  }

  .card--feature {
    padding: 20px 12px;
  }

  /* Services */
  .card--service {
    padding: 24px;
  }

  /* Methodology vertical */
  .methodology__steps {
    flex-direction: column;
    align-items: stretch;
    gap: 32px;
    padding-top: 0;
  }

  .methodology__steps::before {
    display: none;
  }

  .step {
    display: flex;
    align-items: flex-start;
    text-align: left;
    gap: 16px;
  }

  .step__number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    font-size: var(--text-body);
    margin-bottom: 0;
  }

  .step__body {
    flex: 1;
  }

  /* Connector between steps (mobile) */
  .step:not(:last-child) .step__body {
    position: relative;
  }

  .step:not(:last-child) .step__body::after {
    content: '';
    position: absolute;
    left: -28px;
    top: 48px;
    width: 2px;
    height: calc(100% + 16px);
    border-left: 2px dotted var(--ghms-sky);
  }

  /* Cases */
  .cases__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .card--case {
    padding: 24px;
  }

  /* Metrics */
  .metrics__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .metric__value {
    font-size: 36px;
  }

  /* Contact */
  .contact__wrapper {
    grid-template-columns: 1fr;
  }

  .contact__card {
    padding: 28px 24px;
  }

  .contact__card--cta {
    text-align: center;
  }

  .contact__title {
    font-size: var(--text-h2);
  }

  .contact__btn {
    align-self: stretch;
    justify-content: center;
  }

  .contact__card--info {
    order: -1;
  }

  .contact__subtitle {
    font-size: var(--text-caption);
    margin-bottom: 16px;
    padding-bottom: 10px;
  }

  .contact__card--info .contact__channels {
    gap: 12px;
  }

  /* FAB */
  .fab {
    width: 48px;
    height: 48px;
    bottom: 16px;
    right: 16px;
  }

  .fab svg {
    width: 24px;
    height: 24px;
  }
}

/* ---------- 20. Responsive: Small Mobile (480px) ---------- */
@media (max-width: 480px) {
  :root {
    --text-h1: 28px;
    --text-h2: 20px;
    --section-pad: 48px;
    --container-pad: 16px;
  }

  .about__grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .card--feature {
    padding: 16px 10px;
  }

  .card--feature .card__icon {
    width: 32px;
    height: 32px;
  }

  .card--feature .card__title {
    font-size: var(--text-caption);
  }

  .metrics__grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .metric__value {
    font-size: 28px;
  }

  .btn--large {
    padding: 14px 24px;
    font-size: var(--text-body);
  }

  .card--service {
    padding: 20px;
  }

  .card--service .card__icon {
    width: 40px;
    height: 40px;
    margin-bottom: 14px;
  }

  .card--case {
    padding: 20px;
  }
}

/* ---------- 21. Accessibility ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .contact__cta .btn--large {
    animation: none;
  }
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--ghms-blue);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background-color: var(--ghms-sky);
  color: var(--ghms-navy);
}