/* =====================================================================
   GHIATEC — Design System
   Premium-engineering aesthetic
   Brand: Antrasit #1A1D24 + Electric Blue #00A3E0
   Mobile-first, responsive
   ===================================================================== */

/* -------------------- 1. RESET & BASE -------------------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; cursor: pointer; border: none; background: none; }
a { color: inherit; text-decoration: none; }
input, textarea, select { font: inherit; }
ul, ol { padding-left: 1.25em; }

/* -------------------- 2. DESIGN TOKENS -------------------- */

:root {
  /* Brand colors */
  --c-antrasit: #1A1D24;
  --c-blue: #00A3E0;
  --c-blue-dark: #0086B8;
  --c-blue-light: #4DBDED;

  /* Neutrals */
  --c-text: #1A1D24;
  --c-text-muted: #5A6470;
  --c-text-subtle: #8A95A0;
  --c-bg: #FFFFFF;
  --c-bg-soft: #F2F5F7;
  --c-bg-section: #FAFBFC;
  --c-border: #E1E6EB;
  --c-border-strong: #C7CFD6;

  /* Dark theme */
  --c-dark-bg: #1A1D24;
  --c-dark-bg-soft: #232730;
  --c-dark-text: #FFFFFF;
  --c-dark-text-muted: #B8C2CC;
  --c-dark-border: #2E343F;

  /* Typography */
  --ff-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --ff-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --ff-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;

  /* Type scale (mobile-first) */
  --fs-hero: clamp(2.2rem, 6vw, 4.5rem);
  --fs-h1: clamp(1.8rem, 4.5vw, 3rem);
  --fs-h2: clamp(1.5rem, 3.5vw, 2.25rem);
  --fs-h3: clamp(1.2rem, 2.5vw, 1.5rem);
  --fs-h4: clamp(1.05rem, 2vw, 1.2rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-tiny: 0.75rem;

  /* Line heights */
  --lh-tight: 1.1;
  --lh-snug: 1.3;
  --lh-normal: 1.55;
  --lh-loose: 1.75;

  /* Spacing scale */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;
  --s-10: 128px;

  /* Layout */
  --container: 1200px;
  --container-narrow: 920px;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 14px;

  /* Effects */
  --shadow-sm: 0 1px 2px rgba(26, 29, 36, 0.04);
  --shadow: 0 4px 16px rgba(26, 29, 36, 0.06);
  --shadow-lg: 0 16px 40px rgba(26, 29, 36, 0.08);
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* -------------------- 3. TYPOGRAPHY -------------------- */

body {
  font-family: var(--ff-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-display);
  font-weight: 800;
  line-height: var(--lh-snug);
  letter-spacing: -0.015em;
  color: var(--c-antrasit);
  margin: 0 0 var(--s-4);
}

h1 { font-size: var(--fs-h1); font-weight: 900; letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); font-weight: 900; letter-spacing: -0.02em; }
h3 { font-size: var(--fs-h3); font-weight: 700; }
h4 { font-size: var(--fs-h4); font-weight: 700; }

p { margin: 0 0 var(--s-4); }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: 1.125rem;
  color: var(--c-text-muted);
  line-height: var(--lh-loose);
}

.eyebrow {
  display: inline-block;
  font-size: var(--fs-tiny);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--c-blue);
  margin-bottom: var(--s-3);
}

.text-mono { font-family: var(--ff-mono); }
.text-muted { color: var(--c-text-muted); }
.text-blue { color: var(--c-blue); }
.text-center { text-align: center; }

/* -------------------- 4. LAYOUT PRIMITIVES -------------------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--s-5);
}

@media (min-width: 768px) {
  .container { padding: 0 var(--s-6); }
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--s-5);
}

.section {
  padding: var(--s-8) 0;
}

@media (min-width: 768px) {
  .section { padding: var(--s-9) 0; }
}

.section--soft { background: var(--c-bg-soft); }
.section--dark { background: var(--c-dark-bg); color: var(--c-dark-text); }
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: var(--c-dark-text); }
.section--dark .lead { color: var(--c-dark-text-muted); }
.section--dark .text-muted { color: var(--c-dark-text-muted); }

.section-header {
  max-width: 720px;
  margin: 0 auto var(--s-7);
  text-align: center;
}

.grid { display: grid; gap: var(--s-5); }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* -------------------- 5. HEADER & NAV -------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-4) 0;
  gap: var(--s-5);
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo img { height: 36px; width: auto; }

@media (min-width: 768px) {
  .nav-logo img { height: 42px; }
}

.nav-list {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--s-6);
  align-items: center;
}

@media (min-width: 1024px) {
  .nav-list { display: flex; }
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-text);
  padding: var(--s-2) 0;
  position: relative;
  transition: color var(--transition);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  background: var(--c-blue);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition);
}

.nav-link:hover { color: var(--c-blue); }
.nav-link:hover::after,
.nav-link.is-active::after { transform: scaleX(1); }
.nav-link.is-active { color: var(--c-blue); }

.nav-cta {
  display: none;
}

@media (min-width: 1024px) {
  .nav-cta { display: inline-flex; }
}

/* Language switcher */
.lang-switch {
  display: none;
  align-items: center;
  gap: 2px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-right: var(--s-3);
}
@media (min-width: 1024px) {
  .lang-switch { display: inline-flex; }
}
.lang-switch a {
  padding: 6px 10px;
  color: var(--c-text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  letter-spacing: 0.05em;
}
.lang-switch a:hover { color: var(--c-blue); background: var(--c-bg-soft); }
.lang-switch a.is-active {
  color: var(--c-antrasit);
  background: var(--c-bg-soft);
}
.lang-switch .divider {
  color: var(--c-border-strong);
  padding: 0 2px;
}

/* Mobile language switcher */
.nav-mobile-lang {
  display: flex;
  gap: 8px;
  padding: var(--s-4) var(--s-2) 0;
  font-weight: 700;
  font-size: 0.875rem;
}
.nav-mobile-lang a {
  padding: 8px 16px;
  color: var(--c-text-muted);
  border: 1.5px solid var(--c-border-strong);
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}
.nav-mobile-lang a.is-active {
  color: white;
  background: var(--c-antrasit);
  border-color: var(--c-antrasit);
}

/* Mobile menu */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.nav-toggle:hover { background: var(--c-bg-soft); }
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-antrasit);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (min-width: 1024px) {
  .nav-toggle { display: none; }
}

.nav-mobile {
  display: none;
  background: white;
  border-top: 1px solid var(--c-border);
  padding: var(--s-3) 0 var(--s-5);
}
.nav-mobile.is-open { display: block; }

.nav-mobile-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-mobile-list li {
  border-bottom: 1px solid var(--c-border);
}
.nav-mobile-list li:last-child { border-bottom: none; }

.nav-mobile-link {
  display: block;
  padding: var(--s-4) var(--s-2);
  font-weight: 600;
  color: var(--c-text);
}
.nav-mobile-link.is-active { color: var(--c-blue); }

.nav-mobile .btn { margin-top: var(--s-4); width: 100%; justify-content: center; }

/* -------------------- 6. BUTTONS -------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 14px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
  letter-spacing: 0.01em;
}

.btn--primary {
  background: var(--c-blue);
  color: white;
}
.btn--primary:hover {
  background: var(--c-blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 163, 224, 0.3);
}

.btn--secondary {
  background: var(--c-antrasit);
  color: white;
}
.btn--secondary:hover {
  background: #2A2E37;
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--c-antrasit);
  border-color: var(--c-border-strong);
}
.btn--outline:hover {
  border-color: var(--c-blue);
  color: var(--c-blue);
}

.btn--ghost {
  background: transparent;
  color: var(--c-blue);
  padding: 8px 0;
}
.btn--ghost::after {
  content: "→";
  transition: transform var(--transition);
}
.btn--ghost:hover::after { transform: translateX(4px); }

.btn--large {
  padding: 18px 32px;
  font-size: 1.05rem;
}

.btn--on-dark {
  background: white;
  color: var(--c-antrasit);
}
.btn--on-dark:hover { background: var(--c-bg-soft); }

.btn-group {
  display: flex;
  gap: var(--s-3);
  flex-wrap: wrap;
}

/* -------------------- 7. HERO -------------------- */

.hero {
  background: var(--c-antrasit);
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0, 163, 224, 0.18) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(0, 163, 224, 0.12) 0%, transparent 50%),
    linear-gradient(180deg, #1A1D24 0%, #23272F 100%);
  color: white;
  padding: var(--s-9) 0 var(--s-9);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 880px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: var(--fs-tiny);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--c-blue);
  border: 1px solid var(--c-blue);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: var(--s-5);
}

.hero h1 {
  color: white;
  font-size: var(--fs-hero);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: var(--s-5);
}
.hero h1 .accent { color: var(--c-blue); }
.hero h1 .block { display: block; }

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--c-dark-text-muted);
  line-height: var(--lh-loose);
  margin-bottom: var(--s-7);
  max-width: 720px;
}

.hero .btn-group { margin-top: var(--s-6); }

/* Hero — smaller version for inner pages */
.hero--inner {
  padding: var(--s-7) 0 var(--s-8);
}
.hero--inner h1 {
  font-size: var(--fs-h1);
}

/* -------------------- 8. CARDS -------------------- */

.card {
  background: white;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--s-6);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--c-blue);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--c-blue) 0%, var(--c-blue-dark) 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--s-5);
  font-size: 24px;
  font-weight: 900;
}

.card h3 {
  margin-bottom: var(--s-3);
  font-size: 1.2rem;
}

.card p {
  color: var(--c-text-muted);
  font-size: 0.95rem;
  flex-grow: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--c-blue);
  font-weight: 700;
  font-size: 0.9rem;
  margin-top: var(--s-4);
  transition: gap var(--transition);
}
.card-link::after { content: "→"; }
.card-link:hover { gap: 10px; }

/* Sector card with image background */
.sector-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  aspect-ratio: 4 / 3;
  background: var(--c-antrasit);
  color: white;
  padding: var(--s-5);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: transform var(--transition);
}
.sector-card:hover { transform: translateY(-3px); }

.sector-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 30%, rgba(26, 29, 36, 0.85) 100%),
    var(--sector-bg, linear-gradient(135deg, #2A3038, #1A1D24));
  z-index: 1;
}
.sector-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  z-index: 1;
}

.sector-card-content {
  position: relative;
  z-index: 2;
}

.sector-card h3 {
  color: white;
  font-size: 1.5rem;
  margin-bottom: var(--s-2);
  font-weight: 900;
}

.sector-card-meta {
  color: var(--c-blue-light);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--s-3);
}

.sector-card-meta::before {
  content: "";
  width: 16px;
  height: 2px;
  background: var(--c-blue);
}

/* -------------------- 9. CONTENT BLOCKS -------------------- */

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.feature-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: var(--s-3);
  color: var(--c-text);
  line-height: var(--lh-normal);
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 16px;
  height: 2px;
  background: var(--c-blue);
}

.numbered-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: numlist;
}
.numbered-list li {
  counter-increment: numlist;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--s-4);
  margin-bottom: var(--s-5);
  align-items: start;
}
.numbered-list li::before {
  content: counter(numlist, decimal-leading-zero);
  font-family: var(--ff-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-blue);
  line-height: 1;
}
.numbered-list h4 {
  margin-bottom: var(--s-2);
  font-size: 1.05rem;
}
.numbered-list p {
  font-size: 0.95rem;
  color: var(--c-text-muted);
  margin: 0;
}

.kv-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--s-5) 0;
}
.kv-table th, .kv-table td {
  text-align: left;
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid var(--c-border);
  font-size: 0.95rem;
}
.kv-table th {
  font-weight: 700;
  color: var(--c-antrasit);
  width: 30%;
  background: var(--c-bg-soft);
}
.kv-table td { color: var(--c-text-muted); }
.kv-table tr:last-child th,
.kv-table tr:last-child td { border-bottom: none; }

.pull-quote {
  border-left: 3px solid var(--c-blue);
  padding: var(--s-3) 0 var(--s-3) var(--s-5);
  margin: var(--s-6) 0;
  font-size: 1.15rem;
  font-style: italic;
  color: var(--c-antrasit);
  font-weight: 500;
  line-height: var(--lh-snug);
}

/* Subsection within a page (e.g., one of 6 products on Products page) */
.subsection {
  padding: var(--s-7) 0;
  border-top: 1px solid var(--c-border);
}
.subsection:first-of-type { border-top: none; padding-top: 0; }

.subsection-header { margin-bottom: var(--s-5); }
.subsection-header h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--s-2);
}

/* -------------------- 10. ANCHORS / TOC -------------------- */

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  padding: var(--s-4);
  background: var(--c-bg-soft);
  border-radius: var(--radius);
  margin-bottom: var(--s-7);
  font-size: 0.875rem;
}
.toc-label {
  font-weight: 700;
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: var(--fs-tiny);
  margin-right: var(--s-3);
  display: flex;
  align-items: center;
}
.toc a {
  color: var(--c-text);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
}
.toc a:hover {
  background: var(--c-blue);
  color: white;
}

/* Smooth scroll offset for sticky header */
[id] { scroll-margin-top: 80px; }

/* -------------------- 11. CTA SECTION -------------------- */

.cta-section {
  background: var(--c-antrasit);
  background-image:
    radial-gradient(circle at 80% 50%, rgba(0, 163, 224, 0.2) 0%, transparent 40%);
  color: white;
  padding: var(--s-8) 0;
  text-align: center;
}

.cta-section h2 {
  color: white;
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  margin-bottom: var(--s-4);
}
.cta-section p {
  color: var(--c-dark-text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto var(--s-6);
}

/* -------------------- 12. FORMS -------------------- */

.form {
  display: grid;
  gap: var(--s-4);
}

.form-row {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}

.form-field { display: flex; flex-direction: column; gap: 6px; }

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-antrasit);
}
.form-label .required { color: var(--c-blue); }

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--c-border-strong);
  border-radius: var(--radius);
  background: white;
  color: var(--c-text);
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--c-blue);
  box-shadow: 0 0 0 3px rgba(0, 163, 224, 0.15);
}

.form-textarea { min-height: 130px; resize: vertical; }

.form-checkbox-group {
  display: flex;
  gap: var(--s-4);
  align-items: flex-start;
  font-size: 0.875rem;
  color: var(--c-text-muted);
  line-height: var(--lh-normal);
}
.form-checkbox-group input { margin-top: 4px; }

.form-multi {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
}
.form-multi-option {
  padding: 8px 14px;
  border: 1.5px solid var(--c-border-strong);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  background: white;
  user-select: none;
}
.form-multi-option:has(input:checked) {
  background: var(--c-blue);
  color: white;
  border-color: var(--c-blue);
}
.form-multi-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

/* -------------------- 13. FOOTER -------------------- */

.site-footer {
  background: var(--c-antrasit);
  color: var(--c-dark-text-muted);
  padding: var(--s-8) 0 var(--s-5);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-6);
  margin-bottom: var(--s-7);
}
@media (min-width: 640px) {
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
}
@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

.footer-brand img { height: 42px; margin-bottom: var(--s-4); }
.footer-brand p {
  color: var(--c-dark-text-muted);
  font-size: 0.9rem;
  line-height: var(--lh-loose);
  max-width: 360px;
}

.footer-col h4 {
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--s-4);
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: var(--s-2); }
.footer-col a {
  color: var(--c-dark-text-muted);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--c-blue); }

.footer-bottom {
  border-top: 1px solid var(--c-dark-border);
  padding-top: var(--s-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  align-items: center;
  justify-content: space-between;
  text-align: center;
  font-size: var(--fs-small);
}
@media (min-width: 768px) {
  .footer-bottom { flex-direction: row; text-align: left; }
}

.footer-iso {
  display: flex;
  gap: var(--s-3);
  flex-wrap: wrap;
  justify-content: center;
}
.footer-iso span {
  padding: 4px 10px;
  border: 1px solid var(--c-dark-border);
  border-radius: 100px;
  font-size: var(--fs-tiny);
  color: var(--c-dark-text-muted);
}

/* -------------------- 14. UTILITIES -------------------- */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.mt-0 { margin-top: 0 !important; }
.mt-4 { margin-top: var(--s-4); }
.mt-5 { margin-top: var(--s-5); }
.mt-6 { margin-top: var(--s-6); }

@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;
  }
}