:root {
  /* Colors */
  --color-bg: #000000;
  --color-text: #FFFFFF;
  --color-accent: #2fcb44;
  --color-accent-hover: #26a839;
  --color-bg-light: #f5f5f5;
  /* For "Garage Doors From" section */
  --color-text-dark: #1a1a1a;
  --color-surface-dark: #111111;
  --color-surface-light: #ffffff;

  /* Typography */
  --font-heading: 'Sora', sans-serif;
  /* Premium/Modern feel */
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 32px;
  --spacing-xl: 64px;
  --spacing-xxl: 120px;

  /* Layout */
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-pill: 50px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.4s ease-out;
}

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

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

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

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* Typography Utilities */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

.text-accent {
  color: var(--color-accent);
}

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

.uppercase {
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Layout Utilities */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(3, 1fr);
}

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

.flex-col {
  flex-direction: column;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

/* Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 1rem;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
  cursor: pointer;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(47, 203, 68, 0.3);
}

.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-text);
  background-color: rgba(255, 255, 255, 0.05);
}

.btn-colours {
  background-color: #ffffff;
  color: #000000;
  border: 2px solid transparent;
}

.btn-colours:hover {
  border-color: #000000;
}

/* Section Spacing */
section {
  padding: var(--spacing-xxl) 0;
}

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md) 0;
  background-color: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
  display: flex;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

/* --- Hero --- */
.hero {
  padding-top: 140px;
  /* Header height + spacing */
  padding-bottom: var(--spacing-xxl);
  min-height: 90vh;
  display: flex;
  align-items: center;
  background-color: var(--color-bg);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  align-items: center;
  gap: var(--spacing-xl);
}

.hero-feature-thumbnail {
  width: 80px;
  height: 80px;
  background-color: var(--color-surface-dark);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
  object-fit: cover;
}

.hero-title {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

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

.hero-main-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* --- Garage Doors From (Dark Section) --- */
.section-pricing {
  background-color: var(--color-surface-dark);
  color: var(--color-text);
}

.doors-strip {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  overflow-x: auto;
  padding-bottom: var(--spacing-md);
}

.door-preview-card {
  min-width: 280px;
  position: relative;
}

.door-preview-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.price-tag-large {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-accent-hover);
  /* Darker green for light bg */
}

/* --- Benefits --- */
.section-benefits {
  background-color: var(--color-bg);
}

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

.benefit-img-tile {
  background-color: var(--color-surface-dark);
  height: 300px;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}

.benefit-label {
  position: absolute;
  bottom: var(--spacing-md);
  left: var(--spacing-md);
  background: rgba(0, 0, 0, 0.7);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
}

.benefit-icons-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  text-align: center;
  margin-top: var(--spacing-xl);
}

.benefit-icon-circle {
  width: 64px;
  height: 64px;
  background-color: var(--color-surface-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* --- Products --- */
.section-products {
  background-color: var(--color-surface-dark);
}

.products-layout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.product-list-item {
  padding: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.product-list-item:hover,
.product-list-item.active {
  background-color: rgba(255, 255, 255, 0.05);
}

.featured-product-card {
  background-color: var(--color-bg);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  text-align: center;
}

/* --- Footer --- */
.site-footer {
  background-color: #000;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-xl) 0;
}

/* Utilities for animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive Design --- */

@media (max-width: 1024px) {
  :root {
    --container-width: 90%;
    --spacing-xxl: 80px;
  }

  .hero-title {
    font-size: 3rem;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 40px;
    --spacing-lg: 24px;
    --spacing-md: 16px;
  }

  /* Header */
  .site-header .container {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .logo {
    width: 100%;
    justify-content: center;
    margin-bottom: 0.5rem;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
  }

  .nav-links ul {
    justify-content: center;
    gap: 1.5rem;
    min-width: max-content;
  }

  .header-utilities {
    width: 100%;
    justify-content: center;
    margin-top: 0.5rem;
  }

  /* Hero */
  .hero {
    padding-top: 320px;
    /* More space for stacked header */
    text-align: center;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-left,
  .hero-right {
    order: 2;
  }

  .hero-center {
    order: 1;
  }

  .hero-thumbnails {
    justify-content: center;
  }

  /* Typography */
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem !important;
  }

  /* Pricing */
  .section-pricing .flex {
    flex-direction: column;
    align-items: center !important;
    text-align: center;
    gap: 1rem;
  }

  .section-pricing h2,
  .section-pricing p {
    text-align: center !important;
  }

  .doors-strip {
    flex-direction: column;
    overflow-x: visible;
  }

  .door-preview-img {
    height: auto;
    object-fit: contain;
  }

  /* Benefits */
  .benefit-grid {
    grid-template-columns: 1fr;
  }

  .benefit-img-tile {
    height: 250px;
  }

  .benefit-img-tile:nth-child(2) {
    transform: translateY(0) !important;
    /* Remove offset on mobile */
  }

  .benefit-icons-row {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Products */
  .products-layout {
    grid-template-columns: 1fr;
  }

  .product-menu {
    display: flex;
    overflow-x: auto;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
  }

  .product-list-item {
    min-width: 150px;
    border-bottom: none;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1rem;
  }

  /* Installation */
  #installations .grid {
    grid-template-columns: 1fr !important;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr !important;
  }

  /* Footer */
  .site-footer .grid {
    grid-template-columns: 1fr !important;
    text-align: center !important;
  }

  .site-footer .grid img {
    margin: 0 auto;
  }
}

/* Benefit Tiles Grid */
.benefit-tiles-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 768px) {
  .benefit-tiles-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Configurator Styles --- */
.configurator-wrapper {
  background: #111;
  border: 1px solid #333;
  padding: 2rem;
  border-radius: 12px;
}

.step-title {
  margin-bottom: 1.5rem;
  border-bottom: 1px solid #333;
  padding-bottom: 0.5rem;
  color: #fff;
}

/* Selection Cards */
.selection-card {
  background: #1a1a1a;
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  overflow: hidden;
}

.selection-card:hover {
  background: #222;
  transform: translateY(-2px);
}

.selection-card.active {
  border-color: var(--color-accent);
  background: #222;
  box-shadow: 0 0 15px rgba(47, 203, 68, 0.2);
}

.card-header {
  background: #222;
  padding: 1rem;
  text-align: center;
}

.selection-card.active .card-header {
  background: var(--color-accent);
  color: #000;
}

.card-header h4 {
  margin: 0;
  font-size: 1.2rem;
}

.card-header .price {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-top: 0.2rem;
}

.card-body {
  padding: 1.5rem;
  text-align: center;
  color: #aaa;
}

.card-body p {
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.card-body .bonus {
  color: var(--color-accent);
  font-weight: 600;
  margin-top: 1rem;
}

/* Colour Swatches */
.colour-grid {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.colour-swatch {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid rgba(255, 255, 255, 0.2);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.colour-swatch:hover {
  transform: scale(1.1);
}

.colour-swatch.active {
  border-color: var(--color-accent);
  transform: scale(1.1);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

.colour-swatch.rainbow {
  background: conic-gradient(red, orange, yellow, green, blue, indigo, violet, red);
}

.colour-row {
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.colour-row:hover {
  border-color: #555 !important;
  transform: translateY(-2px);
}

.colour-row.active {
  border-color: var(--color-accent) !important;
  box-shadow: 0 0 12px rgba(255, 0, 0, 0.2);
}

.ral-input-container {
  display: none;
  margin-left: 1rem;
  align-items: center;
}

.ral-input-container.visible {
  display: flex;
}

/* Form Styles */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: #ccc;
  font-size: 0.9rem;
}

.form-input {
  width: 100%;
  padding: 12px;
  background: #222;
  border: 1px solid #444;
  border-radius: 4px;
  color: #fff;
  font-size: 1rem;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

/* File Upload Zone */
.upload-drop-zone {
  border: 2px dashed #444;
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  background: #1a1a1a;
  color: #888;
}

.upload-drop-zone:hover,
.upload-drop-zone.highlight {
  border-color: var(--color-accent);
  background: #222;
  color: #fff;
}

.file-preview {
  width: 80px;
  height: 80px;
  background: #333;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border: 1px solid #555;
  background-size: cover;
  background-position: center;
}

.remove-file {
  position: absolute;
  top: -8px;
  right: -8px;
  background: red;
  color: white;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  text-align: center;
  line-height: 20px;
  font-size: 14px;
  cursor: pointer;
}

/* --- Colour Modal --- */
.colour-modal {
  display: none;
  /* hidden by default */
  position: fixed;
  z-index: 2000;
  /* above header */
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.85);
  /* semi-transparent black background */
  backdrop-filter: blur(5px);
  align-items: center;
  justify-content: center;
}

.colour-modal.show {
  display: flex !important;
}

.modal-content {
  background-color: #000;
  border: 1px solid #333;
  width: 90%;
  max-width: 900px;
  padding: 3rem 2rem;
  border-radius: 8px;
  position: relative;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close {
  color: #aaa;
  position: absolute;
  top: 15px;
  right: 25px;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.2s;
}

.modal-close:hover,
.modal-close:focus {
  color: #fff;
  text-decoration: none;
}

.modal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.colour-column {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.column-title {
  text-transform: uppercase;
  font-size: 1.2rem;
  letter-spacing: 2px;
  border-bottom: 1px solid #333;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.colour-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.colour-info {
  width: 120px;
  display: flex;
  flex-direction: column;
}

.colour-name {
  font-weight: 600;
  font-size: 0.9rem;
}

.colour-code {
  font-size: 0.75rem;
  color: #888;
}

.colour-swatch-bar {
  flex-grow: 1;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 2px;
}

.colour-swatch-bar.woodgrain {
  /* specific border style for woodgrain representations if needed */
  border: 1px solid rgba(0, 0, 0, 0.5);
}

@media (max-width: 768px) {
  .modal-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .colour-info {
    width: 100px;
  }
}