/* ============================================================
   Arinta Engineering — style.css
   ============================================================ */

/* ------------------------------------------------------------
   1. Custom Properties
   ------------------------------------------------------------ */
:root {
  /* Colors */
  --color-ink:   #111b1e;
  --color-slate: #5e7a80;
  --color-tidal: #157390;
  --color-foam:  #eaf4f7;
  --color-cloud: #f5fafb;

  /* Typography */
  --font-heading: 'Cal Sans', sans-serif;
  --font-body:    'Archivo', sans-serif;

  /* Spacing (8px base) */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --space-7: 96px;
  --space-8: 128px;

  /* Layout */
  --max-width: 1200px;
  --radius: 4px;
}

/* ------------------------------------------------------------
   2. Reset
   ------------------------------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-cloud);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  text-decoration: underline;
}

ul {
  list-style: none;
}

/* ------------------------------------------------------------
   3. Typography
   ------------------------------------------------------------ */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.1;
  color: var(--color-ink);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

.label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-slate);
}

/* ------------------------------------------------------------
   4. Layout
   ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

.container--centered {
  text-align: center;
}

.container--centered p {
  margin-inline: auto;
}

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

/* ------------------------------------------------------------
   5. Utility Classes
   ------------------------------------------------------------ */
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.color-slate { color: var(--color-slate); }

/* ------------------------------------------------------------
   6. Section Variants
   ------------------------------------------------------------ */
.section-foam {
  background-color: var(--color-foam);
}

.section-dark {
  background-color: var(--color-ink);
  color: #fff;
}

.section-dark .label {
  color: var(--color-tidal);
}

.section-dark h2 {
  color: #fff;
  margin-bottom: var(--space-2);
}

.section-dark p {
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--space-4);
}

/* ------------------------------------------------------------
   7. Buttons
   ------------------------------------------------------------ */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  padding: 14px 28px;
  border-radius: var(--radius);
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: #0f5a72;
  border-color: #0f5a72;
  text-decoration: none;
  color: #fff;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-tidal);
  border-color: var(--color-tidal);
}

.btn-outline:hover {
  background-color: var(--color-tidal);
  color: #fff;
  text-decoration: none;
}

.btn-outline-white {
  background-color: transparent;
  color: #fff;
  border-color: #fff;
}

.btn-outline-white:hover {
  background-color: #fff;
  color: var(--color-tidal);
  text-decoration: none;
}

/* ------------------------------------------------------------
   8. Header / Nav
   ------------------------------------------------------------ */
.nav-toggle-input {
  display: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #fff;
  border-bottom: 1px solid var(--color-foam);
  box-shadow: 0 1px 4px rgba(17, 27, 30, 0.06);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  height: 80px;
}

.site-logo img {
  height: 56px;
  width: auto;
}

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

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

.site-nav a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-ink);
  text-decoration: none;
  transition: color 0.15s ease;
}

.site-nav a:hover {
  color: var(--color-tidal);
  text-decoration: none;
}

.nav-cta {
  margin-left: var(--space-1);
}

.nav-toggle-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  margin-left: var(--space-1);
}

.nav-toggle-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ------------------------------------------------------------
   9. Hero
   ------------------------------------------------------------ */
.hero {
  position: relative;
  background-color: var(--color-ink);
  color: #fff;
  padding-block: var(--space-8);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.45;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(17, 27, 30, 0.55) 0%, transparent 55%);
  z-index: 1;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero .label {
  color: var(--color-tidal);
  margin-bottom: var(--space-2);
  display: block;
}

.hero h1 {
  color: #fff;
  margin-bottom: var(--space-3);
  max-width: 16ch;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-4);
  max-width: 50ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

/* ------------------------------------------------------------
   10. USP Strip
   ------------------------------------------------------------ */
.usp-strip {
  background-color: var(--color-foam);
  padding-block: var(--space-6);
}

.usp-label {
  display: block;
  margin-bottom: var(--space-3);
}

.usp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-3);
}

.usp-card {
  background-color: #fff;
  border: 1px solid rgba(21, 115, 144, 0.3);
  border-radius: var(--radius);
  padding: var(--space-3);
}

.usp-card p {
  font-size: 0.95rem;
  color: var(--color-ink);
  max-width: none;
}

/* ------------------------------------------------------------
   11. Services Grid
   ------------------------------------------------------------ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-4);
}

.services-group h4 {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-slate);
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-1);
  border-bottom: 1px solid var(--color-foam);
}

.services-group-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.service-item {
  background-color: #fff;
  border: 1px solid var(--color-foam);
  border-radius: var(--radius);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-ink);
  border-left: 3px solid var(--color-tidal);
}

/* ------------------------------------------------------------
   12. Section: Alternating Image + Text
   ------------------------------------------------------------ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: center;
}

.split.reverse {
  direction: rtl;
}

.split.reverse > * {
  direction: ltr;
}

.split-img {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  object-fit: cover;
  width: 100%;
}

.split-content .label {
  display: block;
  margin-bottom: var(--space-2);
}

.split-content h2 {
  margin-bottom: var(--space-2);
}

.split-content p {
  color: var(--color-ink);
  margin-bottom: var(--space-3);
  max-width: 55ch;
}

.section-dark .split-content p {
  color: rgba(255, 255, 255, 0.75);
}

/* ------------------------------------------------------------
   13. Capability Strip (3D Printing / Equipment Callout)
   ------------------------------------------------------------ */
.capability-panel {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.capability-tag {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  color: var(--color-tidal);
  line-height: 1.1;
}

.capability-specs {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.capability-specs li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2);
  font-size: 0.9rem;
  padding-block: var(--space-1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.capability-specs li:last-child {
  border-bottom: none;
}

.capability-specs li span:first-child {
  color: rgba(255, 255, 255, 0.5);
  white-space: nowrap;
  flex-shrink: 0;
}

.capability-specs li span:last-child {
  color: #fff;
  text-align: right;
}

/* ------------------------------------------------------------
   14. Service Detail List (Services page)
   ------------------------------------------------------------ */
.service-list {
  margin-top: var(--space-3);
  display: flex;
  flex-direction: column;
}

.service-list-item {
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-foam);
}

.service-list-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.service-name {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-ink);
  display: block;
  margin-bottom: 4px;
}

.service-list-item p {
  color: var(--color-slate);
  font-size: 0.95rem;
  max-width: none;
  margin-bottom: 0;
}

/* ------------------------------------------------------------
   15. Section Dark — H1 override
   ------------------------------------------------------------ */
.section-dark h1 {
  color: #fff;
  margin-bottom: var(--space-3);
}

/* ------------------------------------------------------------
   15. Process Steps (About page)
   ------------------------------------------------------------ */
.process-step {
  background-color: #fff;
  border-radius: var(--radius);
  border-top: 3px solid var(--color-tidal);
  padding: var(--space-4);
}

.process-step-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: var(--color-tidal);
  line-height: 1;
  display: block;
  margin-bottom: var(--space-2);
}

.process-step h3 {
  margin-bottom: var(--space-2);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.process-step p {
  color: var(--color-slate);
  font-size: 0.95rem;
  max-width: none;
}

/* ------------------------------------------------------------
   16. 404 Page
   ------------------------------------------------------------ */
.error-page {
  min-height: calc(100vh - 80px - 280px);
  display: flex;
  align-items: center;
  padding-block: var(--space-8);
}

.error-page .label {
  display: block;
  margin-bottom: var(--space-4);
  color: var(--color-tidal);
}

.error-code {
  font-family: var(--font-heading);
  font-size: clamp(4rem, 12vw, 8rem);
  line-height: 0.85;
  color: var(--color-foam);
  margin-bottom: var(--space-5);
  user-select: none;
}

.error-page h1 {
  margin-bottom: var(--space-4);
  max-width: 18ch;
}

.error-page p {
  color: var(--color-slate);
  max-width: 48ch;
  margin-bottom: var(--space-5);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

/* ------------------------------------------------------------
   15. Footer
   ------------------------------------------------------------ */
.site-footer {
  background-color: var(--color-ink);
  color: rgba(255, 255, 255, 0.7);
  padding-block: var(--space-6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

.footer-brand .site-logo {
  margin-bottom: var(--space-2);
}

.footer-brand p {
  font-size: 0.9rem;
  max-width: 36ch;
}

.footer-col h4 {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: var(--space-2);
}

.footer-col ul li {
  margin-bottom: var(--space-1);
  font-size: 0.9rem;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-col ul li a:hover {
  color: #fff;
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-3);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: 0.85rem;
}

.social-links {
  display: flex;
  gap: var(--space-2);
}

.social-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.15s ease;
}

.social-links a:hover {
  color: #fff;
  text-decoration: none;
}

/* ------------------------------------------------------------
   17. Contact Form
   ------------------------------------------------------------ */
.contact-split {
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

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

.form-label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--color-ink);
}

.form-input,
.form-select,
.form-textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-ink);
  background-color: #fff;
  border: 1px solid rgba(94, 122, 128, 0.35);
  border-radius: var(--radius);
  padding: 12px 16px;
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  appearance: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-tidal);
  box-shadow: 0 0 0 3px rgba(21, 115, 144, 0.12);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235e7a80' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
  line-height: 1.5;
}

.contact-panel {
  background-color: #fff;
  border: 1px solid rgba(21, 115, 144, 0.2);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-self: start;
}

.contact-panel-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-panel-section .label {
  display: block;
  margin-bottom: var(--space-1);
}

.contact-detail {
  font-size: 1rem;
  color: var(--color-ink);
  line-height: 1.5;
}

.contact-detail a {
  color: var(--color-ink);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s ease;
}

.contact-detail a:hover {
  color: var(--color-tidal);
}

.hours-list {
  display: flex;
  flex-direction: column;
}

.hours-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: 0.9rem;
  padding-block: 8px;
  border-bottom: 1px solid var(--color-foam);
}

.hours-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.hours-row span:first-child {
  color: var(--color-slate);
}

/* ------------------------------------------------------------
   18. Field Notes — Article Listing
   ------------------------------------------------------------ */
.fn-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.fn-card {
  background-color: #fff;
  border: 1px solid rgba(21, 115, 144, 0.2);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  text-decoration: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

a.fn-card:hover {
  border-color: var(--color-tidal);
  box-shadow: 0 4px 16px rgba(21, 115, 144, 0.1);
  text-decoration: none;
}

.fn-card--coming-soon {
  opacity: 0.65;
}

.fn-card .label {
  display: block;
}

.fn-card-title {
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  color: var(--color-ink);
  line-height: 1.2;
  margin: 0;
}

.fn-card-excerpt {
  font-size: 0.9rem;
  color: var(--color-slate);
  line-height: 1.55;
  flex-grow: 1;
  margin: 0;
}

.fn-badge {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-slate);
  background-color: var(--color-foam);
  border-radius: var(--radius);
  padding: 4px 10px;
  align-self: flex-start;
  margin-top: var(--space-1);
}

.fn-read-link {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-tidal);
  margin-top: var(--space-1);
  align-self: flex-start;
}

/* ------------------------------------------------------------
   19. Field Notes — Article Page
   ------------------------------------------------------------ */
.article-header h1 {
  color: #fff;
  max-width: 22ch;
  margin-top: var(--space-3);
  margin-bottom: var(--space-3);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.article-meta .label {
  color: var(--color-tidal);
}

.article-meta-sep {
  color: rgba(255, 255, 255, 0.25);
  font-size: 0.8rem;
}

.article-meta-date {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
}

.prose {
  max-width: 68ch;
  margin-inline: auto;
}

.prose h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

.prose h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
}

.prose p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-ink);
  margin-bottom: var(--space-3);
}

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

.prose strong {
  font-weight: 600;
  color: var(--color-ink);
}

.prose em {
  font-style: italic;
  color: var(--color-ink);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-block: var(--space-4);
  font-size: 0.9rem;
}

.data-table th {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-slate);
  text-align: left;
  padding: var(--space-2) var(--space-3);
  border-bottom: 2px solid var(--color-foam);
}

.data-table td {
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-foam);
  color: var(--color-ink);
  vertical-align: top;
}

.data-table td:first-child {
  font-weight: 500;
}

.data-table td:last-child {
  color: var(--color-slate);
}

.article-cta-box {
  background-color: var(--color-foam);
  border-left: 3px solid var(--color-tidal);
  border-radius: var(--radius);
  padding: var(--space-4);
  margin-top: var(--space-6);
}

.article-cta-box .label {
  display: block;
  margin-bottom: var(--space-2);
}

.article-cta-box h3 {
  margin-bottom: var(--space-2);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.article-cta-box p {
  color: var(--color-slate);
  font-size: 0.95rem;
  margin-bottom: var(--space-3);
  line-height: 1.6;
}

.article-cta-box p:last-of-type {
  margin-bottom: var(--space-3);
}

.sources-section {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-foam);
}

.sources-section h3 {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-slate);
  margin-bottom: var(--space-3);
}

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

.sources-list li {
  font-size: 0.875rem;
  color: var(--color-slate);
  line-height: 1.5;
}

.sources-list li a {
  color: var(--color-tidal);
}

.article-img-block {
  margin-block: var(--space-5);
}

.article-img-block img {
  width: 100%;
  border-radius: var(--radius);
  display: block;
}

.article-img-caption {
  font-size: 0.8rem;
  color: var(--color-slate);
  margin-top: var(--space-1);
  line-height: 1.5;
}

.article-back-link {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--color-slate);
  text-decoration: none;
  margin-bottom: var(--space-4);
  transition: color 0.15s ease;
}

.article-back-link:hover {
  color: var(--color-tidal);
  text-decoration: none;
}

/* ------------------------------------------------------------
   15. Responsive
   ------------------------------------------------------------ */
@media (max-width: 768px) {
  section {
    padding-block: var(--space-5);
  }

  /* Hamburger button */
  .nav-toggle-btn {
    display: flex;
  }

  /* Nav links: hidden by default, dropdown when toggle checked */
  .site-nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background-color: #fff;
    border-bottom: 1px solid var(--color-foam);
    box-shadow: 0 4px 12px rgba(17, 27, 30, 0.08);
    padding: var(--space-2) var(--space-3) var(--space-3);
    z-index: 99;
  }

  .site-nav-links a {
    padding-block: var(--space-2);
    width: 100%;
    border-bottom: 1px solid var(--color-foam);
    font-size: 1rem;
  }

  .site-nav-links a:last-child {
    border-bottom: none;
  }

  /* Show nav when toggle is checked */
  #nav-toggle:checked ~ .site-header .site-nav-links {
    display: flex;
  }

  /* Hamburger → X animation */
  #nav-toggle:checked ~ .site-header .nav-toggle-btn span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  #nav-toggle:checked ~ .site-header .nav-toggle-btn span:nth-child(2) {
    opacity: 0;
  }

  #nav-toggle:checked ~ .site-header .nav-toggle-btn span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Layout */
  .split {
    grid-template-columns: 1fr;
  }

  .split.reverse {
    direction: ltr;
  }

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

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

  .form-row {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  .hero {
    padding-block: var(--space-6);
  }

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