/* ==========================================================================
   Big Burgers — styles.css
   A single-page marketing site for a Wolverhampton burger shop.
   Mobile-first, custom-property driven, WCAG AA minded.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */
:root {
  /* Colour system — smoky grill darks, warm ember, cream paper */
  --clr-ink: #17120f;
  --clr-ink-soft: #2a211b;
  --clr-ink-line: rgba(255, 255, 255, 0.1);
  --clr-ember: #c2410c;
  --clr-ember-dark: #98320a;
  --clr-ember-tint: rgba(194, 65, 12, 0.08);
  --clr-amber: #f2a33c;
  --clr-cream: #fdf8f3;
  --clr-surface: #ffffff;
  --clr-surface-warm: #fffefc;
  --clr-line: #ece2d8;
  --clr-line-strong: #ddd0c4;
  --clr-body: #4a3f38;
  --clr-muted: #6f6057;
  --clr-placeholder: #9a8b80;

  /* Typography */
  --font-display: "Outfit", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;

  --text-xs: 0.8125rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.0625rem;
  --text-lg: 1.1875rem;
  --text-xl: clamp(1.75rem, 1.35rem + 1.9vw, 2.75rem);
  --text-hero: clamp(2.6rem, 1.5rem + 7.4vw, 5rem);
  --text-card: 1.1rem;

  /* Spacing scale */
  --space-3xs: 0.375rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.25rem;
  --space-xl: 3.5rem;
  --space-2xl: 5rem;
  --section-y: clamp(3.75rem, 2.2rem + 6vw, 7rem);

  /* Shape & elevation */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --shadow-soft: 0 14px 36px -26px rgba(23, 18, 15, 0.45);
  --shadow-lift: 0 26px 46px -30px rgba(23, 18, 15, 0.5);
  --shadow-ember: 0 14px 28px -16px rgba(194, 65, 12, 0.75);

  /* Layout */
  --container: 1100px;
  --gutter: 1.25rem;
  --header-h: 4.25rem;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 0.75, 0.32, 1);
  --dur-fast: 180ms;
  --dur-mid: 280ms;
  --dur-slow: 700ms;

  /* Focus ring */
  --ring: 0 0 0 3px var(--clr-cream), 0 0 0 6px var(--clr-ember);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  background-color: var(--clr-cream);
  color: var(--clr-body);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  color: var(--clr-ink);
  margin: 0;
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-weight: 700;
  text-wrap: balance;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   3. Shared layout helpers
   -------------------------------------------------------------------------- */
.header-inner,
.section-inner,
.footer-inner,
.footer-bottom {
  width: min(100% - (var(--gutter) * 2), var(--container));
  margin-inline: auto;
}

.hero-inner {
  width: min(100% - (var(--gutter) * 2), var(--container));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

section {
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.section-eyebrow {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-ember);
  margin-bottom: var(--space-xs);
}

.section-title {
  font-size: var(--text-xl);
  max-width: 32ch;
}

.section-intro {
  margin-top: var(--space-sm);
  max-width: 58ch;
  font-size: var(--text-md);
  color: var(--clr-muted);
  line-height: 1.7;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -140%);
  z-index: 200;
  padding: 0.7rem 1.25rem;
  background: var(--clr-ink);
  color: var(--clr-cream);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--dur-mid) var(--ease-out);
}

.skip-link:focus-visible {
  transform: translate(-50%, 0);
}

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border: 1.5px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out),
    background-color var(--dur-fast) ease,
    border-color var(--dur-fast) ease,
    color var(--dur-fast) ease,
    box-shadow var(--dur-fast) ease;
}

.button-primary {
  background-color: var(--clr-ember);
  color: #ffffff;
  box-shadow: var(--shadow-ember);
}

.button-primary:hover,
.button-primary:focus-visible {
  background-color: var(--clr-ember-dark);
  transform: translateY(-2px);
}

.button-ghost {
  background-color: transparent;
  border-color: rgba(253, 248, 243, 0.38);
  color: var(--clr-cream);
}

.button-ghost:hover,
.button-ghost:focus-visible {
  border-color: var(--clr-amber);
  color: var(--clr-amber);
  transform: translateY(-2px);
}

.button-block {
  width: 100%;
}

/* --------------------------------------------------------------------------
   5. Header & navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(23, 18, 15, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--clr-cream);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  min-height: var(--header-h);
}

/* Wordmark */
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--clr-cream);
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.wordmark-mark {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 12px;
  background: linear-gradient(140deg, var(--clr-ember) 0%, var(--clr-amber) 130%);
  color: #ffffff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.wordmark-mark svg {
  width: 1.45rem;
  height: 1.45rem;
}

.wordmark-text {
  font-size: 1.2rem;
  line-height: 1;
}

/* Hamburger toggle */
.nav-toggle {
  display: grid;
  place-items: center;
  width: 2.85rem;
  height: 2.85rem;
  padding: 0;
  background-color: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  color: var(--clr-cream);
  cursor: pointer;
  transition: border-color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}

.nav-toggle:hover {
  border-color: rgba(242, 163, 60, 0.6);
  background-color: rgba(255, 255, 255, 0.06);
}

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 1.35rem;
  height: 0.9rem;
}

.nav-toggle-bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background-color: currentColor;
  transition: transform var(--dur-mid) var(--ease-out), opacity var(--dur-fast) ease,
    top var(--dur-mid) var(--ease-out);
}

.nav-toggle-bars span:nth-child(1) {
  top: 0;
}

.nav-toggle-bars span:nth-child(2) {
  top: 0.44rem;
}

.nav-toggle-bars span:nth-child(3) {
  top: 0.88rem;
}

.site-header.nav-open .nav-toggle-bars span:nth-child(1) {
  top: 0.44rem;
  transform: rotate(45deg);
}

.site-header.nav-open .nav-toggle-bars span:nth-child(2) {
  opacity: 0;
}

.site-header.nav-open .nav-toggle-bars span:nth-child(3) {
  top: 0.44rem;
  transform: rotate(-45deg);
}

/* Mobile nav panel */
.primary-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: #1f1814;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 24px 40px -28px rgba(0, 0, 0, 0.9);
  max-height: 0;
  opacity: 0;
  visibility: hidden;
  overflow: hidden;
  transition: max-height var(--dur-mid) var(--ease-out), opacity var(--dur-fast) ease,
    visibility var(--dur-mid) ease;
}

.site-header.nav-open .primary-nav {
  max-height: 26rem;
  opacity: 1;
  visibility: visible;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: var(--space-2xs) var(--gutter) var(--space-md);
}

.nav-list li + li {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.nav-link {
  display: block;
  padding: 0.85rem 0.15rem;
  color: rgba(253, 248, 243, 0.84);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--dur-fast) ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--clr-amber);
}

.nav-link-cta {
  color: var(--clr-amber);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background-color: var(--clr-ink);
  background-image: radial-gradient(
      120% 90% at 12% 12%,
      rgba(242, 163, 60, 0.16) 0%,
      rgba(23, 18, 15, 0) 55%
    ),
    radial-gradient(110% 100% at 88% 8%, rgba(194, 65, 12, 0.34) 0%, rgba(23, 18, 15, 0) 58%),
    linear-gradient(165deg, #1d1713 0%, #17120f 48%, #241812 100%);
  color: var(--clr-cream);
  padding-block: clamp(3.5rem, 2rem + 8vw, 7rem) clamp(4rem, 2.4rem + 9vw, 7.5rem);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0) 78%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0) 78%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -30%;
  z-index: 0;
  width: min(46rem, 105vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: conic-gradient(
    from 200deg,
    rgba(194, 65, 12, 0.4),
    rgba(242, 163, 60, 0.18),
    rgba(194, 65, 12, 0) 62%
  );
  filter: blur(30px);
  opacity: 0.85;
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-amber);
  padding: 0.45rem 0.9rem;
  border: 1px solid rgba(242, 163, 60, 0.32);
  border-radius: var(--radius-pill);
  background-color: rgba(242, 163, 60, 0.07);
}

.hero-title {
  margin-top: var(--space-md);
  font-size: var(--text-hero);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.035em;
  color: #ffffff;
  max-width: 18ch;
}

.hero-title-accent {
  display: block;
  color: var(--clr-amber);
}

.hero-lede {
  margin-top: var(--space-md);
  max-width: 46ch;
  font-size: var(--text-md);
  line-height: 1.7;
  color: rgba(253, 248, 243, 0.8);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-facts li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(253, 248, 243, 0.76);
}

.hero-facts svg {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--clr-amber);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   7. About
   -------------------------------------------------------------------------- */
.about {
  background-color: var(--clr-cream);
  padding-block: var(--section-y);
}

.about-body {
  margin-top: var(--space-lg);
  display: grid;
  gap: var(--space-md);
  max-width: 68ch;
}

.about-body p {
  font-size: var(--text-md);
  line-height: 1.78;
  color: var(--clr-body);
}

.about-body p:first-child {
  font-size: var(--text-lg);
  color: var(--clr-ink-soft);
}

/* --------------------------------------------------------------------------
   8. Services / menu cards
   -------------------------------------------------------------------------- */
.services {
  background-color: var(--clr-surface);
  padding-block: var(--section-y);
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: var(--space-md);
  background-color: var(--clr-cream);
  border: 1px solid var(--clr-line);
  border-radius: var(--radius-lg);
  transition: transform var(--dur-mid) var(--ease-out), box-shadow var(--dur-mid) var(--ease-out),
    border-color var(--dur-mid) ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(194, 65, 12, 0.32);
  box-shadow: var(--shadow-lift);
}

.card-icon {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 14px;
  background-color: var(--clr-ember-tint);
  color: var(--clr-ember);
  transition: background-color var(--dur-mid) ease, color var(--dur-mid) ease;
}

.card:hover .card-icon {
  background-color: var(--clr-ember);
  color: #ffffff;
}

.card-icon svg {
  width: 1.6rem;
  height: 1.6rem;
}

.card-title {
  font-size: var(--text-card);
  font-weight: 700;
  letter-spacing: -0.015em;
}

.card-text {
  font-size: 0.9688rem;
  line-height: 1.68;
  color: var(--clr-muted);
}

/* --------------------------------------------------------------------------
   9. Why choose us
   -------------------------------------------------------------------------- */
.why-choose-us {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background-image: linear-gradient(155deg, #1b1512 0%, #241a14 52%, #2d1d12 100%);
  color: rgba(243, 236, 228, 0.82);
  padding-block: var(--section-y);
}

.why-choose-us::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(120% 90% at 80% 0%, rgba(0, 0, 0, 0.9), transparent 70%);
  mask-image: radial-gradient(120% 90% at 80% 0%, rgba(0, 0, 0, 0.9), transparent 70%);
  pointer-events: none;
}

.why-choose-us .section-title {
  color: #ffffff;
}

.why-choose-us .section-eyebrow {
  color: var(--clr-amber);
}

.why-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.why-item {
  padding: var(--space-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  background-color: rgba(255, 255, 255, 0.03);
  transition: border-color var(--dur-mid) ease, background-color var(--dur-mid) ease,
    transform var(--dur-mid) var(--ease-out);
}

.why-item:hover {
  border-color: rgba(242, 163, 60, 0.42);
  background-color: rgba(242, 163, 60, 0.06);
  transform: translateY(-3px);
}

.why-number {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--clr-amber);
  margin-bottom: var(--space-xs);
}

.why-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.why-text {
  font-size: 0.9688rem;
  line-height: 1.7;
  color: rgba(243, 236, 228, 0.76);
}

/* --------------------------------------------------------------------------
   10. Contact
   -------------------------------------------------------------------------- */
.contact {
  background-color: var(--clr-cream);
  padding-block: var(--section-y);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-lede {
  margin-top: var(--space-sm);
  max-width: 52ch;
  font-size: var(--text-md);
  line-height: 1.72;
  color: var(--clr-muted);
}

.contact-list {
  display: grid;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm);
  background-color: var(--clr-surface);
  border: 1px solid var(--clr-line);
  border-radius: var(--radius-md);
}

.contact-item-icon {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  flex-shrink: 0;
  border-radius: 50%;
  background-color: var(--clr-ember-tint);
  color: var(--clr-ember);
}

.contact-item-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.contact-item-body {
  display: block;
}

.contact-item-label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-muted);
}

.contact-item-value {
  display: block;
  margin-top: 0.15rem;
  font-weight: 600;
  color: var(--clr-ink);
}

.social-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  margin-top: var(--space-md);
}

.social-link {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--clr-line-strong);
  border-radius: 50%;
  background-color: var(--clr-surface);
  color: var(--clr-ink);
  text-decoration: none;
  transition: background-color var(--dur-fast) ease, color var(--dur-fast) ease,
    border-color var(--dur-fast) ease, transform var(--dur-fast) var(--ease-out);
}

.social-link svg {
  width: 1.15rem;
  height: 1.15rem;
}

.social-link:hover,
.social-link:focus-visible {
  background-color: var(--clr-ink);
  border-color: var(--clr-ink);
  color: var(--clr-cream);
  transform: translateY(-2px);
}

/* Form */
.contact-form {
  display: grid;
  gap: var(--space-sm);
  padding: clamp(1.35rem, 1rem + 2vw, 2.25rem);
  background-color: var(--clr-surface);
  border: 1px solid var(--clr-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field-label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--clr-ink);
}

.field-input {
  width: 100%;
  padding: 0.8rem 1rem;
  background-color: var(--clr-surface-warm);
  border: 1px solid var(--clr-line-strong);
  border-radius: var(--radius-sm);
  color: var(--clr-ink);
  font-size: var(--text-base);
  line-height: 1.5;
  transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease,
    background-color var(--dur-fast) ease;
}

.field-input::placeholder {
  color: var(--clr-placeholder);
}

.field-input:hover {
  border-color: #c9b8a9;
}

.field-input:focus-visible {
  outline: none;
  border-color: var(--clr-ember);
  background-color: var(--clr-surface);
  box-shadow: 0 0 0 4px rgba(194, 65, 12, 0.16);
}

.field-textarea {
  resize: vertical;
  min-height: 8.5rem;
}

.form-note {
  min-height: 1.25rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--clr-ember-dark);
}

/* --------------------------------------------------------------------------
   11. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--clr-ink);
  color: rgba(253, 248, 243, 0.72);
  padding-top: var(--space-xl);
}

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

.footer-wordmark {
  display: block;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.footer-tagline {
  margin-top: 0.5rem;
  max-width: 34ch;
  font-size: 0.9688rem;
  line-height: 1.65;
  color: rgba(253, 248, 243, 0.62);
}

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

.footer-nav-list a {
  font-size: 0.9688rem;
  font-weight: 500;
  color: rgba(253, 248, 243, 0.72);
  text-decoration: none;
  transition: color var(--dur-fast) ease;
}

.footer-nav-list a:hover,
.footer-nav-list a:focus-visible {
  color: var(--clr-amber);
}

.footer-bottom {
  margin-top: var(--space-xl);
  padding-block: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
  font-size: var(--text-sm);
  color: rgba(253, 248, 243, 0.55);
}

/* --------------------------------------------------------------------------
   12. Scroll reveal (driven by script.js)
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
  will-change: opacity, transform;
}

.reveal.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   13. Responsive breakpoints
   -------------------------------------------------------------------------- */
@media (min-width: 600px) {
  :root {
    --gutter: 1.75rem;
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-md);
  }

  .why-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-md);
  }
}

@media (min-width: 760px) {
  .footer-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: var(--space-md);
  }

  .footer-nav {
    justify-self: end;
  }

  .footer-nav-list {
    gap: var(--space-2xs) var(--space-md);
  }
}

@media (min-width: 900px) {
  :root {
    --gutter: 2rem;
    --header-h: 4.75rem;
  }

  /* Desktop navigation */
  .nav-toggle {
    display: none;
  }

  .primary-nav {
    position: static;
    max-height: none;
    opacity: 1;
    visibility: visible;
    overflow: visible;
    background-color: transparent;
    border: 0;
    box-shadow: none;
  }

  .nav-list {
    flex-direction: row;
    align-items: center;
    gap: 0.25rem;
    padding: 0;
  }

  .nav-list li + li {
    border-top: 0;
  }

  .nav-link {
    padding: 0.5rem 0.75rem;
    border-radius: 10px;
    font-size: var(--text-base);
    transition: color var(--dur-fast) ease, background-color var(--dur-fast) ease;
  }

  .nav-link:hover,
  .nav-link:focus-visible {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.08);
  }

  .nav-link-cta {
    margin-left: 0.5rem;
    padding: 0.55rem 1.15rem;
    border: 1px solid rgba(242, 163, 60, 0.5);
    border-radius: var(--radius-pill);
  }

  .nav-link-cta:hover,
  .nav-link-cta:focus-visible {
    background-color: var(--clr-amber);
    border-color: var(--clr-amber);
    color: var(--clr-ink);
  }

  /* Hero */
  .hero-facts {
    gap: var(--space-xs) var(--space-xl);
  }

  .about-body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-md) var(--space-lg);
    max-width: none;
  }

  .about-body p:first-child {
    grid-column: 1 / -1;
    max-width: 60ch;
  }

  .about-body p:not(:first-child) {
    max-width: 52ch;
  }

  /* Contact two-column */
  .contact-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: clamp(2rem, 1rem + 4vw, 4.5rem);
  }
}

@media (min-width: 1000px) {
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-md);
  }

  .card {
    padding: var(--space-lg) var(--space-md);
  }

  .why-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* --------------------------------------------------------------------------
   14. Reduced motion
   -------------------------------------------------------------------------- */
@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;
    transition-delay: 0ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .button:hover,
  .button:focus-visible,
  .card:hover,
  .why-item:hover,
  .social-link:hover,
  .social-link:focus-visible {
    transform: none;
  }
}