/* =========================================================================
   Kódlabor Kft. — Design system & site styles
   Plain, modern CSS. No build step / framework dependency on purpose, so the
   ASP.NET Core project keeps working with `dotnet build` / `dotnet publish`
   only (no Node.js required in the Docker pipeline).
   ========================================================================= */

/* ---------------------------------------------------------------------
   1. Design tokens
   --------------------------------------------------------------------- */
:root {
  /* Brand colors (kept close to the existing logo palette) */
  --color-ink-900: #0e1620;
  --color-ink-800: #16212f;
  --color-ink-700: #1f2c3a;
  --color-ink-600: #2d3e50;
  --color-ink-500: #445468;

  --color-accent: #0091ea;
  --color-accent-dark: #0072b8;
  --color-accent-light: #e5f4fd;

  --color-brand-yellow: #ffd200;
  --color-brand-yellow-dark: #e0ba00;

  --color-surface: #ffffff;
  --color-surface-alt: #f5f7fa;
  --color-surface-muted: #eef1f5;
  --color-border: #e1e6ec;

  --color-text: #1b1f24;
  --color-text-muted: #566173;
  --color-text-soft: #7c8798;
  --color-text-inverse: #ffffff;
  --color-text-inverse-muted: #b7c2d0;

  /* Typography */
  --font-sans: ui-sans-serif, "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --step--1: clamp(0.83rem, 0.8rem + 0.15vw, 0.9rem);
  --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.08rem);
  --step-1: clamp(1.15rem, 1.08rem + 0.35vw, 1.35rem);
  --step-2: clamp(1.4rem, 1.28rem + 0.6vw, 1.75rem);
  --step-3: clamp(1.75rem, 1.5rem + 1.2vw, 2.3rem);
  --step-4: clamp(2.1rem, 1.7rem + 2vw, 3.1rem);

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* Misc */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.08), 0 2px 6px rgba(16, 24, 40, 0.06);
  --shadow-lg: 0 20px 45px rgba(16, 24, 40, 0.14);
  --container-width: 1180px;
  --transition: 180ms ease;
  --header-height: 76px;
}

/* ---------------------------------------------------------------------
   2. Reset & base
   --------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-surface);
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, p {
  margin: 0;
}

button {
  font: inherit;
}

.icon {
  width: 1em;
  height: 1em;
}

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

/* ---------------------------------------------------------------------
   3. Accessibility helpers
   --------------------------------------------------------------------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 100;
  padding: var(--space-3) var(--space-5);
  background: var(--color-ink-900);
  color: var(--color-text-inverse);
  border-radius: var(--radius-sm);
  transition: top var(--transition);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ---------------------------------------------------------------------
   4. Layout helpers
   --------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.section {
  padding-block: var(--space-8);
}

.section--tight {
  padding-block: var(--space-7);
}

.section--alt {
  background: var(--color-surface-alt);
}

.section-head {
  max-width: 62ch;
  margin-bottom: var(--space-7);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.section-head h2 {
  font-size: var(--step-3);
  font-weight: 800;
  color: var(--color-ink-700);
  letter-spacing: -0.01em;
}

.section-head p {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--step-1);
}

.prose p {
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
  text-align: left;
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose strong {
  color: var(--color-text);
}

.grid {
  display: grid;
  gap: var(--space-6);
}

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

@media (min-width: 860px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

.split {
  display: grid;
  gap: var(--space-7);
  align-items: center;
}

@media (min-width: 900px) {
  .split {
    grid-template-columns: 1.1fr 1fr;
  }
  .split--reverse {
    grid-template-columns: 1fr 1.1fr;
  }
  .split--reverse > :first-child {
    order: 2;
  }
}

/* ---------------------------------------------------------------------
   5. Buttons & badges
   --------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--step--1);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), background-color var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn .icon {
  width: 1.05em;
  height: 1.05em;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

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

.btn--accent {
  background: var(--color-brand-yellow);
  color: var(--color-ink-900);
}

.btn--accent:hover {
  background: var(--color-brand-yellow-dark);
}

.btn--outline {
  border-color: currentColor;
  color: var(--color-text-inverse);
  background: transparent;
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn--ghost {
  background: transparent;
  color: var(--color-accent);
  padding-inline: 0.4rem;
  border: none;
}

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

.btn--sm {
  padding: 0.55rem 1.1rem;
  font-size: var(--step--1);
}

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

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  background: var(--color-surface-muted);
  color: var(--color-ink-600);
  font-size: var(--step--1);
  font-weight: 600;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
  background: var(--color-accent-light);
  color: var(--color-accent-dark);
  font-size: var(--step--1);
  font-weight: 700;
}

/* ---------------------------------------------------------------------
   6. Header & navigation
   --------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: box-shadow var(--transition);
}

/*
 * The frosted-glass backdrop lives on a pseudo-element instead of directly on
 * .site-header. `backdrop-filter` (like `filter`/`transform`) turns the element
 * it's set on into the containing block for any `position: fixed` descendant.
 * .main-nav (the mobile full-screen menu) is nested inside the header, so if
 * .site-header itself had `backdrop-filter`, the "fixed" menu would size itself
 * against the ~76px-tall header box instead of the viewport and collapse into a
 * sliver. Keeping the filter on ::before avoids that trap while keeping the look.
 */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(14, 22, 32, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  transition: background-color var(--transition);
}

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

.site-header.is-scrolled::before {
  background: rgba(14, 22, 32, 0.98);
}

.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 800;
  font-size: var(--step-1);
  color: var(--color-text-inverse);
}

.brand:hover {
  text-decoration: none;
}

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

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: transparent;
  cursor: pointer;
  position: relative;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-inverse);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle span::before {
  position: absolute;
  transform: translateY(-6px);
}

.nav-toggle span::after {
  position: absolute;
  transform: translateY(6px);
}

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] span::before {
  transform: translateY(0) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span::after {
  transform: translateY(0) rotate(-45deg);
}

.main-nav {
  display: block;
}

.main-nav__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.main-nav__list a {
  display: block;
  padding: var(--space-3) 0;
  color: var(--color-text-inverse-muted);
  font-weight: 600;
}

.main-nav__list a:hover,
.main-nav__list a.is-active {
  color: var(--color-accent);
  text-decoration: none;
}

@media (max-width: 899px) {
  .main-nav {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: var(--color-ink-900);
    padding: var(--space-6) var(--space-5);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    overflow-y: auto;
  }

  .main-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
  }

  .main-nav__list a {
    font-size: var(--step-1);
    color: var(--color-text-inverse);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .main-nav__cta {
    margin-top: var(--space-5);
  }
}

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

  .main-nav__list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-6);
  }

  .main-nav__list a {
    padding: var(--space-2) 0;
    position: relative;
  }

  .main-nav__list a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transition: transform var(--transition);
  }

  .main-nav__list a:hover::after,
  .main-nav__list a.is-active::after {
    transform: scaleX(1);
  }

  .main-nav__cta {
    margin-left: var(--space-2);
  }
}

/* ---------------------------------------------------------------------
   7. Hero
   --------------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(1100px 520px at 85% -10%, rgba(0, 145, 234, 0.35), transparent 60%),
              radial-gradient(700px 420px at 0% 0%, rgba(255, 210, 0, 0.18), transparent 55%),
              linear-gradient(180deg, var(--color-ink-800), var(--color-ink-900));
  color: var(--color-text-inverse);
  padding-block: var(--space-9) var(--space-8);
}

.hero__grid {
  display: grid;
  gap: var(--space-7);
  align-items: center;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--color-brand-yellow);
  margin-bottom: var(--space-5);
}

.hero h1 {
  font-size: var(--step-4);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
}

.hero h1 em {
  font-style: normal;
  color: var(--color-brand-yellow);
}

.hero p {
  font-size: var(--step-1);
  color: var(--color-text-inverse-muted);
  max-width: 56ch;
  margin-bottom: var(--space-6);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero__panel {
  position: relative;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  backdrop-filter: blur(6px);
}

.hero__panel-list {
  list-style: none;
  display: grid;
  gap: var(--space-4);
}

.hero__panel-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: var(--color-text-inverse);
}

.hero__panel-list .icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  padding: var(--space-2);
  box-sizing: content-box;
  border-radius: var(--radius-sm);
  background: rgba(255, 210, 0, 0.16);
  color: var(--color-brand-yellow);
}

/* ---------------------------------------------------------------------
   8. Breadcrumb / page header (inner pages)
   --------------------------------------------------------------------- */
.page-header {
  background: linear-gradient(180deg, var(--color-ink-800), var(--color-ink-700));
  color: var(--color-text-inverse);
  padding-block: var(--space-7) var(--space-6);
}

.page-header h1 {
  font-size: var(--step-3);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.breadcrumb {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  font-size: var(--step--1);
  color: var(--color-text-inverse-muted);
  margin-top: var(--space-3);
}

.breadcrumb a {
  color: var(--color-brand-yellow);
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: var(--space-2);
  color: var(--color-text-inverse-muted);
}

/* ---------------------------------------------------------------------
   9. Cards — services / products / team / partners
   --------------------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.service-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-4);
}

.service-card__icon .icon {
  width: 26px;
  height: 26px;
}

.card h3 {
  font-size: var(--step-1);
  font-weight: 700;
  color: var(--color-ink-700);
  margin-bottom: var(--space-2);
}

.card p {
  color: var(--color-text-muted);
  font-size: var(--step--1);
}

.product-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
}

.product-card__media {
  position: relative;
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-alt);
  padding: var(--space-5);
}

.product-card__media img {
  max-height: 100%;
  width: auto;
  object-fit: contain;
}

.product-card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.product-card__body p {
  color: var(--color-text-muted);
  flex: 1;
}

.team-card {
  text-align: center;
}

.team-card__avatar {
  width: 84px;
  height: 84px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-accent), var(--color-ink-600));
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--step-1);
}

.team-card h3 {
  margin-bottom: 0.15rem;
}

.team-card__title {
  color: var(--color-accent);
  font-weight: 600;
  font-size: var(--step--1);
  margin-bottom: var(--space-4);
}

.team-card__contacts {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
  font-size: var(--step--1);
}

.team-card__contacts a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
}

.team-card__contacts a:hover {
  color: var(--color-accent);
}

/* Company info / address card */
.info-card {
  display: grid;
  gap: var(--space-4);
}

.info-row {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.info-row .icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 0.2em;
  color: var(--color-accent);
}

.info-row div span {
  display: block;
  font-size: var(--step--1);
  color: var(--color-text-soft);
}

/* ---------------------------------------------------------------------
   10. References page
   --------------------------------------------------------------------- */
.ref-category {
  padding-block: var(--space-7);
  border-bottom: 1px solid var(--color-border);
}

.ref-category:last-child {
  border-bottom: none;
}

.ref-category__head {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.ref-category__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-ink-700);
  color: var(--color-brand-yellow);
}

.ref-category__icon .icon {
  width: 28px;
  height: 28px;
}

.ref-category__head h2 {
  font-size: var(--step-2);
  font-weight: 800;
  color: var(--color-ink-700);
}

.ref-entries {
  display: grid;
  gap: var(--space-4);
}

.ref-entry {
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.ref-entry h3 {
  font-size: var(--step-0);
  font-weight: 700;
  color: var(--color-ink-700);
}

.ref-entry__contractor {
  font-size: var(--step--1);
  color: var(--color-text-soft);
  font-style: italic;
  margin-top: 0.15rem;
}

.ref-entry p {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--step--1);
}

.ref-entry__clients {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---------------------------------------------------------------------
   11. Product details page
   --------------------------------------------------------------------- */
.contact-banner {
  background: linear-gradient(120deg, var(--color-ink-700), var(--color-ink-600));
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 720px) {
  .contact-banner {
    grid-template-columns: 1.2fr auto;
    align-items: center;
  }
}

.contact-banner h3 {
  font-size: var(--step-1);
  font-weight: 800;
  margin-bottom: var(--space-2);
}

.contact-banner h3 strong {
  color: var(--color-brand-yellow);
}

.contact-banner p {
  color: var(--color-text-inverse-muted);
}

.contact-banner__people {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}

.contact-banner__person {
  font-size: var(--step--1);
}

.contact-banner__person strong {
  display: block;
  margin-bottom: 0.2rem;
}

.contact-banner__person a {
  color: var(--color-text-inverse);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.logo-wall {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

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

@media (min-width: 900px) {
  .logo-wall { grid-template-columns: repeat(5, 1fr); }
}

.logo-wall__item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100px;
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  transition: background-color var(--transition);
}

.logo-wall__item:hover {
  background: var(--color-surface-muted);
}

.logo-wall__item img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  filter: grayscale(1) opacity(0.75);
  transition: filter var(--transition);
}

.logo-wall__item:hover img {
  filter: grayscale(0) opacity(1);
}

.check-list {
  list-style: none;
  display: grid;
  gap: var(--space-3);
}

.check-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  color: var(--color-text-muted);
}

.check-list .icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 0.15em;
  color: var(--color-accent);
}

.feature-column h3 {
  background: var(--color-ink-700);
  color: var(--color-text-inverse);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-sm);
  font-size: var(--step-0);
  margin-bottom: var(--space-4);
}

.feature-column ul {
  list-style: none;
  display: grid;
  gap: var(--space-3);
}

.feature-column li {
  padding-left: var(--space-4);
  position: relative;
  color: var(--color-text-muted);
  font-size: var(--step--1);
}

.feature-column li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
}

.feature-column li strong {
  display: block;
  color: var(--color-text);
  margin-bottom: 0.2rem;
}

/* ---------------------------------------------------------------------
   12. CTA band
   --------------------------------------------------------------------- */
.cta-band {
  background: linear-gradient(120deg, var(--color-ink-800), var(--color-accent-dark));
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  text-align: center;
}

.cta-band h2 {
  font-size: var(--step-2);
  font-weight: 800;
  margin-bottom: var(--space-3);
}

.cta-band p {
  color: var(--color-text-inverse-muted);
  max-width: 56ch;
  margin-inline: auto;
  margin-bottom: var(--space-5);
}

/* ---------------------------------------------------------------------
   13. Footer
   --------------------------------------------------------------------- */
.site-footer {
  background: var(--color-ink-900);
  color: var(--color-text-inverse-muted);
  padding-block: var(--space-8) var(--space-6);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-7);
}

@media (min-width: 720px) {
  .site-footer__grid {
    grid-template-columns: 1.5fr 1fr;
  }
}

.site-footer .brand {
  color: var(--color-text-inverse);
  margin-bottom: var(--space-3);
}

.site-footer p {
  font-size: var(--step--1);
  max-width: 40ch;
}

.site-footer h4 {
  color: var(--color-text-inverse);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-4);
}

.site-footer ul {
  list-style: none;
  display: grid;
  gap: var(--space-3);
  font-size: var(--step--1);
}

.site-footer a {
  color: var(--color-text-inverse-muted);
}

.site-footer a:hover {
  color: var(--color-text-inverse);
}

.site-footer ul li a,
.site-footer ul li span {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.site-footer ul li .icon {
  flex-shrink: 0;
  margin-top: 0.2em;
}

.site-footer__bottom {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: var(--step--1);
  text-align: center;
}

/* ---------------------------------------------------------------------
   14. Error page
   --------------------------------------------------------------------- */
.error-page {
  padding-block: var(--space-9);
  text-align: center;
}

.error-page__code {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.error-page h1 {
  font-size: var(--step-3);
  font-weight: 800;
  color: var(--color-ink-700);
  margin-bottom: var(--space-3);
}

.error-page p {
  color: var(--color-text-muted);
  max-width: 50ch;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}

.error-page__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.error-page__id {
  margin-top: var(--space-6);
  font-size: var(--step--1);
  color: var(--color-text-soft);
}

/* ---------------------------------------------------------------------
   15. Scroll-reveal animation
   --------------------------------------------------------------------- */
/*
 * Only hide [data-reveal] elements once we know site.js actually runs
 * (html.js, set by an inline script in <head>). This avoids content staying
 * permanently invisible (opacity: 0) if JavaScript is blocked, slow, or fails
 * to load - the .no-js default keeps everything visible.
 */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}