/* ==========================================================================
   ENERGY CRANE — Premium Enterprise Design System & Interactive CSS
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@500;600;700;800;900&display=swap');

:root {
  /* Theme Colors */
  --bg-dark: #090d16;
  --bg-surface: #101726;
  --bg-surface-elevated: #1a2336;
  --bg-surface-glass: rgba(16, 23, 38, 0.75);
  
  --color-orange: #ea580c;
  --color-orange-hover: #f97316;
  --color-orange-glow: rgba(234, 88, 12, 0.35);
  --color-gold: #f59e0b;
  --color-blue-accent: #38bdf8;
  
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  
  --border-light: rgba(255, 255, 255, 0.08);
  --border-orange: rgba(234, 88, 12, 0.3);
  
  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Layout & Geometry */
  --max-width: 1280px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  --header-height: 84px;
  
  /* Shadows & Depth */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 25px var(--color-orange-glow);
  
  /* Transitions */
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.25, 1, 0.5, 1);
  --transition-fast: 0.2s var(--ease-smooth);
  --transition-normal: 0.35s var(--ease-smooth);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Background Ambient Motion Canvas */
#ambient-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

.site-container {
  position: relative;
  z-index: 1;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Typography Utilities --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-primary);
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, var(--color-orange) 85%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-orange-text {
  background: linear-gradient(135deg, #fb923c 0%, #ea580c 50%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(234, 88, 12, 0.12);
  border: 1px solid var(--border-orange);
  border-radius: var(--radius-pill);
  color: var(--color-orange);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-tag svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.15rem;
  max-width: 680px;
  margin: 0 auto 3.5rem auto;
}

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

/* --- Buttons & CTAs --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.25s var(--ease-out-back), box-shadow 0.25s var(--ease-smooth), background-color 0.2s, color 0.2s;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
  color: #ffffff;
  box-shadow: 0 4px 15px var(--color-orange-glow);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(60deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transform: rotate(30deg) translateX(-100%);
  transition: transform 0.6s ease;
}

.btn-primary:hover::before {
  transform: rotate(30deg) translateX(100%);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(234, 88, 12, 0.5);
  background: linear-gradient(135deg, #fb923c 0%, #ea580c 100%);
}

.btn-primary:active {
  transform: translateY(-1px) scale(0.99);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  color: #ffffff;
}

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

.btn-outline-orange:hover {
  background: var(--color-orange);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 1.1rem 2.2rem;
  font-size: 1.1rem;
}

/* --- Sticky Header Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: all 0.35s var(--ease-smooth);
}

.navbar.scrolled {
  height: 72px;
  background: rgba(9, 13, 22, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.navbar .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, #f97316, #ea580c);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px var(--color-orange-glow);
  transition: transform 0.3s var(--ease-out-back);
}

.logo:hover .logo-icon {
  transform: rotate(-10deg) scale(1.1);
}

.logo-text span {
  color: var(--color-orange);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--color-orange);
  border-radius: 2px;
  transition: width 0.25s var(--ease-smooth);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.phone-cta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.phone-cta:hover {
  color: var(--color-orange);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.5rem;
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background: var(--bg-surface);
  border-left: 1px solid var(--border-light);
  z-index: 1001;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  transition: right 0.35s var(--ease-smooth);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.7);
}

.mobile-drawer.open {
  right: 0;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  display: block;
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

/* --- Hero Section & Estimator --- */
.hero-section {
  position: relative;
  padding-top: calc(var(--header-height) + 3rem);
  padding-bottom: 5rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 13, 22, 0.7) 0%, rgba(9, 13, 22, 0.95) 85%, var(--bg-dark) 100%),
              radial-gradient(circle at 70% 30%, rgba(234, 88, 12, 0.15), transparent 60%);
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
  filter: brightness(0.8) contrast(1.1);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-headline {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 580px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.trust-badge svg {
  color: var(--color-orange);
}

/* Interactive Lift Capacity Estimator Glass Card */
.estimator-card {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s;
}

.estimator-card:hover {
  border-color: var(--border-orange);
}

.estimator-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-gold));
}

.estimator-header {
  margin-bottom: 1.5rem;
}

.estimator-header h3 {
  font-size: 1.35rem;
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.estimator-header p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.estimator-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
}

.form-group label .value-val {
  color: var(--color-orange);
  font-weight: 700;
}

.range-slider {
  width: 100%;
  accent-color: var(--color-orange);
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.1);
  cursor: pointer;
}

.estimator-result {
  margin-top: 0.75rem;
  padding: 1.25rem;
  background: rgba(234, 88, 12, 0.08);
  border: 1px dashed var(--border-orange);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.result-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.result-value {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--color-gold);
}

/* --- Section Spacing & Containers --- */
.section {
  padding: 6.5rem 0;
  position: relative;
}

.section-darker {
  background: var(--bg-surface);
}

/* --- Stats Counter Bar --- */
.stats-section {
  padding: 3rem 0;
  background: rgba(16, 23, 38, 0.6);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  position: relative;
  z-index: 2;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-card {
  text-align: center;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-light);
  transition: transform 0.3s var(--ease-out-back), border-color 0.3s;
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-orange);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 3.5vw, 3rem);
  font-weight: 900;
  color: var(--text-primary);
  display: flex;
  justify-content: center;
  align-items: baseline;
  margin-bottom: 0.3rem;
}

.stat-number span {
  color: var(--color-orange);
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

/* --- Services Grid Cards --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  transition: transform 0.35s var(--ease-out-back), box-shadow 0.35s var(--ease-smooth), border-color 0.3s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.service-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-gold));
  transition: width 0.35s var(--ease-smooth);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-orange);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), var(--shadow-glow);
}

.service-card:hover::after {
  width: 100%;
}

.service-icon {
  width: 58px;
  height: 58px;
  background: rgba(234, 88, 12, 0.12);
  border: 1px solid var(--border-orange);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-orange);
  margin-bottom: 1.5rem;
  transition: transform 0.35s var(--ease-out-back), background-color 0.3s;
}

.service-card:hover .service-icon {
  transform: rotate(8deg) scale(1.12);
  background: var(--color-orange);
  color: #ffffff;
}

.service-title {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.service-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-features {
  list-style: none;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.service-features li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-features li svg {
  color: var(--color-orange);
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* --- Fleet Interactive Filter Catalog --- */
.fleet-tabs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  padding: 0.65rem 1.3rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tab-btn:hover, .tab-btn.active {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: #ffffff;
  box-shadow: 0 4px 15px var(--color-orange-glow);
}

.fleet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.fleet-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.35s var(--ease-out-back), box-shadow 0.35s ease, border-color 0.3s;
}

.fleet-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-orange);
  box-shadow: var(--shadow-lg);
}

.fleet-img-wrapper {
  height: 220px;
  position: relative;
  overflow: hidden;
}

.fleet-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-smooth);
}

.fleet-card:hover .fleet-img {
  transform: scale(1.08);
}

.fleet-category-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(9, 13, 22, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-light);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-gold);
  text-transform: uppercase;
}

.fleet-body {
  padding: 1.75rem;
}

.fleet-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.fleet-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.fleet-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.spec-item {
  display: flex;
  flex-direction: column;
  text-align: center;
}

.spec-value {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-orange);
}

.spec-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* --- Safety Hub Section --- */
.safety-box {
  background: linear-gradient(135deg, rgba(16, 23, 38, 0.9), rgba(26, 35, 54, 0.9));
  border: 1px solid var(--border-orange);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2.5rem;
  box-shadow: var(--shadow-lg);
}

.safety-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.safety-img-wrapper {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
}

.safety-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.checklist-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(234, 88, 12, 0.2);
  color: var(--color-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.checklist-text h4 {
  font-size: 1.05rem;
  margin-bottom: 0.2rem;
}

.checklist-text p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* --- Quote Request Section --- */
.quote-section {
  background: radial-gradient(circle at 50% 0%, rgba(234, 88, 12, 0.12), transparent 70%);
}

.quote-card {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 3.5rem 3rem;
  box-shadow: var(--shadow-lg);
}

.quote-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group-full {
  grid-column: 1 / -1;
}

.input-control, .select-control, .textarea-control {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.input-control:focus, .select-control:focus, .textarea-control:focus {
  border-color: var(--color-orange);
  box-shadow: 0 0 12px var(--color-orange-glow);
  background: rgba(255, 255, 255, 0.06);
}

.select-control option {
  background: var(--bg-surface);
  color: var(--text-primary);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
}

.checkbox-input {
  accent-color: var(--color-orange);
  width: 16px;
  height: 16px;
}

/* --- Floating Back to Top Button --- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-orange);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px var(--color-orange-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.35s var(--ease-out-back);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px) scale(1.1);
  background: var(--color-orange-hover);
}

/* --- Scroll Reveal Animations --- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity 0.7s var(--ease-smooth), transform 0.7s var(--ease-smooth);
}

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

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* --- Footer --- */
.footer {
  background: #050810;
  border-top: 1px solid var(--border-light);
  padding: 4.5rem 0 2rem 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* --- Quick Quote Modal --- */
.modal-wrapper {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 1.5rem;
}

.modal-wrapper.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-orange);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  padding: 2.5rem;
  position: relative;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s var(--ease-out-back);
  box-shadow: var(--shadow-lg);
}

.modal-wrapper.active .modal-card {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.4rem;
}

.modal-close:hover {
  color: var(--text-primary);
}

/* --- Responsive Layout Breakpoints --- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .safety-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links, .phone-cta {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .quote-form-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}