/* ============================================
   Arbol Construction — Main Stylesheet
   Mobile-first responsive design
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Montserrat:wght@600;700;800&display=swap');

/* --- Custom Properties --- */
:root {
  --color-primary: #2d5016;
  --color-accent: #4caf50;
  --color-highlight: #8bc34a;
  --color-white: #ffffff;
  --color-light: #f5f5f5;
  --color-text: #333333;
  --color-text-muted: #666666;
  --color-border: #e0e0e0;
  --color-primary-dark: #1e3a0e;
  --color-overlay: rgba(0, 0, 0, 0.7);

  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Montserrat', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --header-height: 80px;
  --max-width: 1200px;
  --radius: 8px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.75rem); }

p {
  margin-bottom: var(--space-md);
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-xl) 0;
}

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

.section-dark {
  background: var(--color-primary);
  color: var(--color-white);
}

.section-dark h2,
.section-dark h3 {
  color: var(--color-white);
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-header p {
  color: var(--color-text-muted);
  max-width: 600px;
  margin: var(--space-sm) auto 0;
  font-size: 1.1rem;
}

.container-narrow {
  max-width: 700px;
}

.form-subtitle {
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  min-height: 44px;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

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

.btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
}

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

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

.btn-outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

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

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  height: var(--header-height);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

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

.nav-brand-text {
  display: flex;
  flex-direction: column;
}

.nav-brand-name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-primary);
  line-height: 1.1;
}

.nav-brand-tagline {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links-inline {
  display: none;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links-inline a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  padding: var(--space-xs) 0;
  position: relative;
}

.nav-links-inline a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav-links-inline a:hover::after,
.nav-links-inline a.active::after {
  width: 100%;
}

.nav-links-inline a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav-cta {
  display: none;
}

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

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  min-height: 44px;
  min-width: 44px;
  justify-content: center;
  align-items: center;
}

.hamburger-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition);
}

.hamburger.is-active .hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.is-active .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active .hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Drawer */
.nav-links-drawer {
  position: fixed;
  top: var(--header-height);
  right: 0;
  width: 280px;
  height: calc(100vh - var(--header-height));
  background: var(--color-white);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
  transform: translateX(100%);
  transition: transform var(--transition);
  overflow-y: auto;
  z-index: 999;
  padding: var(--space-lg) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.nav-links-drawer.is-open {
  transform: translateX(0);
}

.nav-links-drawer a {
  display: block;
  padding: 0.75rem var(--space-md);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius);
  transition: background var(--transition);
}

.nav-links-drawer a:hover,
.nav-links-drawer a.active {
  background: var(--color-light);
  color: var(--color-primary);
}

.nav-links-drawer .btn {
  margin-top: var(--space-md);
  text-align: center;
}

.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 998;
  /* Don't capture clicks that land on the drawer (right 280px) */
  right: 280px;
}

.mobile-overlay.is-active {
  display: block;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  padding: calc(var(--header-height) + var(--space-xl)) var(--space-md) var(--space-xl);
  overflow: hidden;
}

/* Rotating background of real project photos (see js/main.js). Brand-green
   tint keeps the white headline legible over any photo. */
.hero-slides {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-slide-1 { background-image: url('../images/hero/hero-01-custom-home.jpg'); }
.hero-slide-2 { background-image: url('../images/hero/hero-02-custom-estate.jpg'); }
.hero-slide-3 { background-image: url('../images/hero/hero-03-mountain-modern.jpg'); }
.hero-slide-4 { background-image: url('../images/hero/hero-04-timber-entry.jpg'); }
.hero-slide-5 { background-image: url('../images/hero/hero-05-winter-homes.jpg'); }
.hero-slide-6 { background-image: url('../images/hero/hero-06-retail-center.jpg'); }

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(45, 80, 22, 0.72), rgba(30, 58, 14, 0.78));
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

@media (prefers-reduced-motion: reduce) {
  .hero-slide {
    transition: none;
  }
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
  font-weight: 800;
}

.hero p {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  opacity: 0.95;
  margin-bottom: var(--space-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   SERVICES OVERVIEW (Home)
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: transform var(--transition), box-shadow var(--transition);
  border-top: 4px solid var(--color-accent);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.service-card-icon {
  width: 56px;
  height: 56px;
  background: var(--color-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

.service-card-icon svg {
  width: 28px;
  height: 28px;
}

.service-card h3 {
  margin-bottom: var(--space-sm);
}

.service-card p {
  color: var(--color-text-muted);
}

/* ============================================
   WHY CHOOSE US
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.feature-item {
  text-align: center;
  padding: var(--space-lg);
}

.feature-icon {
  width: 72px;
  height: 72px;
  background: rgba(76, 175, 80, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  color: var(--color-primary);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
}

.feature-item h3 {
  margin-bottom: var(--space-sm);
  font-size: 1.15rem;
}

.feature-item p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ============================================
   STATS BAR
   ============================================ */
.stats-bar {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-xl) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  text-align: center;
}

.stat-item h3 {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--color-highlight);
  margin-bottom: var(--space-xs);
}

.stat-item p {
  font-size: 0.95rem;
  opacity: 0.9;
}

/* ============================================
   CTA BANNER
   ============================================ */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  text-align: center;
  padding: var(--space-xl) var(--space-md);
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.cta-banner p {
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto var(--space-lg);
  font-size: 1.1rem;
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.about-intro img {
  border-radius: var(--radius);
  width: 100%;
}

/* Single-column variant for intro/detail sections whose image slot is
   pending (photos arrive via the client's Drive uploads). */
.section-single {
  max-width: 800px;
  margin: 0 auto;
}

.about-values {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.value-card {
  padding: var(--space-lg);
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  border-left: 4px solid var(--color-accent);
}

.value-card h3 {
  margin-bottom: var(--space-sm);
}

.value-card p {
  color: var(--color-text-muted);
}

/* ============================================
   SERVICES PAGE
   ============================================ */
.service-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.service-detail:last-child {
  border-bottom: none;
}

.service-detail img {
  border-radius: var(--radius);
  width: 100%;
}

.service-detail h3 {
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

.service-detail ul {
  list-style: none;
  margin: var(--space-md) 0;
}

.service-detail ul li {
  padding: var(--space-xs) 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--color-text-muted);
}

.service-detail ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* ============================================
   PROJECTS / GALLERY
   ============================================ */
.project-filters {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  border: 2px solid var(--color-border);
  border-radius: 100px;
  background: var(--color-white);
  color: var(--color-text);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-size: 0.9rem;
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-white);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.projects-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  background: var(--color-light);
  border-radius: var(--radius);
}

.projects-empty svg {
  width: 48px;
  height: 48px;
  color: var(--color-accent);
  margin: 0 auto var(--space-md);
}

.projects-empty h3 {
  margin-bottom: var(--space-sm);
}

.projects-empty p {
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto;
}

.project-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.project-card:hover img {
  transform: scale(1.05);
}

.project-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-md);
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover .project-card-overlay {
  opacity: 1;
}

.project-card-overlay h3 {
  color: var(--color-white);
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.project-card-overlay p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.85rem;
  margin: 0;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

.lightbox.is-open {
  display: flex;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 85vh;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  border-radius: var(--radius);
  object-fit: contain;
}

.lightbox-caption {
  text-align: center;
  color: var(--color-white);
  padding: var(--space-md) 0;
  font-size: 1rem;
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 2rem;
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
  min-height: 48px;
  min-width: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.3);
}

.lightbox-prev {
  left: -60px;
}

.lightbox-next {
  right: -60px;
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.contact-info-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-light);
  border-radius: var(--radius);
  margin-bottom: var(--space-md);
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-white);
}

.contact-info-icon svg {
  width: 22px;
  height: 22px;
}

.contact-info-card h3 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.contact-info-card p {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 0.95rem;
}

.contact-form {
  background: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  transition: border-color var(--transition);
  background: var(--color-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

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

.form-hp {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.form-status {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  font-size: 0.95rem;
  display: none;
}

.form-status.is-visible {
  display: block;
}

.form-status.is-success {
  background: rgba(76, 175, 80, 0.12);
  color: var(--color-primary-dark);
  border: 1px solid var(--color-accent);
}

.form-status.is-error {
  background: rgba(211, 47, 47, 0.08);
  color: #b71c1c;
  border: 1px solid rgba(211, 47, 47, 0.3);
}

.form-confirmation {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
}

.form-confirmation h3 {
  margin-bottom: var(--space-sm);
}

.form-confirmation p {
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* ============================================
   CAREERS PAGE
   ============================================ */
.careers-hero {
  background: linear-gradient(135deg, rgba(45, 80, 22, 0.88), rgba(30, 58, 14, 0.92));
  color: var(--color-white);
  text-align: center;
  padding: calc(var(--header-height) + var(--space-xl)) var(--space-md) var(--space-xl);
}

.careers-hero h1 {
  color: var(--color-white);
}

.careers-hero p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: var(--space-md) auto 0;
  font-size: 1.1rem;
}

.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.benefit-card {
  background: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  text-align: center;
}

.benefit-card svg {
  width: 40px;
  height: 40px;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.benefit-card h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
}

.benefit-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.position-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  transition: box-shadow var(--transition);
}

.position-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.position-card h3 {
  margin-bottom: var(--space-xs);
}

.position-subtitle {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 1rem;
}

.position-meta {
  display: flex;
  gap: var(--space-md);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.position-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.position-card p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

/* ============================================
   SAFETY PAGE
   ============================================ */
.safety-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.safety-stat {
  text-align: center;
  padding: var(--space-lg);
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.safety-stat h3 {
  color: var(--color-accent);
  font-size: 2rem;
  margin-bottom: var(--space-xs);
}

.safety-policies {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.policy-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  align-items: flex-start;
}

.policy-icon {
  width: 48px;
  height: 48px;
  background: rgba(76, 175, 80, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
}

.policy-icon svg {
  width: 24px;
  height: 24px;
}

.policy-card h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
}

.policy-card p {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 0.95rem;
}

/* ============================================
   ERROR PAGE
   ============================================ */
.error-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-height) + var(--space-xl)) var(--space-md) var(--space-xl);
}

.error-page h1 {
  font-size: clamp(5rem, 15vw, 10rem);
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.error-page h2 {
  margin-bottom: var(--space-md);
}

.error-page p {
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto var(--space-lg);
}

/* ============================================
   PAGE HERO (Interior Pages)
   ============================================ */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  text-align: center;
  padding: calc(var(--header-height) + var(--space-xl)) var(--space-md) var(--space-xl);
}

.page-hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.page-hero p {
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-xl) 0 var(--space-lg);
}

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

.footer-brand .nav-brand-name {
  color: var(--color-white);
  font-size: 1.5rem;
}

.footer-brand .nav-brand-tagline {
  color: rgba(255, 255, 255, 0.6);
}

.footer-brand p {
  margin-top: var(--space-md);
  font-size: 0.95rem;
  max-width: 300px;
}

.footer-heading {
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: var(--space-md);
}

.footer-links a {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-xs) 0;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--color-highlight);
}

.footer-contact-info p {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}

.footer-contact-info svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-highlight);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 900;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
}

/* ============================================
   RESPONSIVE — Tablet (768px+)
   ============================================ */
@media (min-width: 768px) {
  .nav-links-inline {
    display: flex;
  }

  .nav-cta {
    display: inline-block;
  }

  .hamburger {
    display: none;
  }

  .nav-links-drawer {
    display: none;
  }

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

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

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .contact-layout {
    grid-template-columns: 1fr 1.2fr;
  }

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

  .about-intro {
    grid-template-columns: 1fr 1fr;
  }

  .service-detail {
    grid-template-columns: 1fr 1fr;
  }

  .service-detail:nth-child(even) img {
    order: -1;
  }

  .section-single {
    grid-template-columns: 1fr;
  }

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

  .safety-stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
  }

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

  .lightbox-prev {
    left: -80px;
  }

  .lightbox-next {
    right: -80px;
  }
}

/* ============================================
   RESPONSIVE — Desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

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

  .hero {
    min-height: 90vh;
  }
}

/* ============================================
   RESPONSIVE — Mobile overrides (max 767px)
   ============================================ */
@media (max-width: 767px) {
  :root {
    --header-height: 64px;
  }

  .nav-brand-name {
    font-size: 1.1rem;
  }

  .nav-brand-tagline {
    font-size: 0.6rem;
  }

  .hero {
    min-height: 70vh;
  }

  .lightbox-prev,
  .lightbox-next {
    position: fixed;
    top: auto;
    bottom: var(--space-lg);
    transform: none;
  }

  .lightbox-prev {
    left: var(--space-lg);
  }

  .lightbox-next {
    right: var(--space-lg);
  }
}