:root {
  /* Color Palette */
  --bg-color: #121212;
  --card-bg: #1a1a1a;
  --text-color: #ffffff;
  --text-muted: #aaaaaa;
  --eco-green: #00e676;
  
  --surface-light: #2c302d;
  --eco-green-glow: rgba(0, 230, 118, 0.2);
  --eco-green-dark: #00b25c;
  --industrial-gray: #9ca3af;
  --danger: #ef4444;
  --border-color: #374151;

  /* Typography */
  --font-primary: 'Inter', system-ui, sans-serif;
  --font-display: 'Outfit', system-ui, sans-serif;

  /* Spacing & Utilities */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body, html { width: 100%; overflow-x: hidden; }
img, input, textarea, select, video, .internal-element { max-width: 100%; height: auto; }

body {
  background-color: var(--bg-color);
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 30px 30px;
  background-position: center center;
  color: var(--text-color);
  font-family: var(--font-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-color);
}

p, span, label {
  color: var(--text-color);
}

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

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

/* Base Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  box-sizing: border-box;
}

/* Navigation */
.navbar {
  background-color: rgba(18, 20, 19, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand span {
  color: var(--eco-green);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: var(--font-primary);
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--eco-green);
  color: #000;
  box-shadow: 0 4px 14px var(--eco-green-glow);
}

.btn-primary:hover {
  background-color: var(--eco-green-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--eco-green-glow);
}

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

.btn-outline:hover {
  background-color: var(--eco-green);
  color: #000;
}

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

/* Hero Section */
.hero {
  padding: 6rem 0;
  text-align: center;
  background: radial-gradient(circle at top, var(--card-bg) 0%, var(--bg-color) 100%);
  border-bottom: 1px solid var(--border-color);
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-color), var(--industrial-gray));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2.5rem auto;
}

/* Product Grid */
.section-title {
  font-size: 2rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.section-title::after {
  content: '';
  height: 1px;
  flex: 1;
  background-color: var(--border-color);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--eco-green);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.card-img-placeholder {
  height: 200px;
  background: linear-gradient(45deg, var(--surface-light), var(--card-bg));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--industrial-gray);
  font-family: var(--font-display);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
}

.card-content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

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

.card-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  flex: 1;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
}

.price {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-display);
  color: var(--eco-green);
}

/* Out of Stock Styling */
.card.out-of-stock {
  opacity: 0.7;
  filter: grayscale(80%);
}

.card.out-of-stock .card-img-placeholder {
  position: relative;
}

.card.out-of-stock .card-img-placeholder::after {
  content: 'OUT OF STOCK';
  position: absolute;
  background-color: rgba(0,0,0,0.8);
  color: var(--danger);
  padding: 0.5rem 1rem;
  font-weight: 800;
  font-family: var(--font-display);
  transform: rotate(-15deg);
  border: 2px solid var(--danger);
  border-radius: var(--radius-sm);
}

.card.out-of-stock .btn-primary {
  background-color: var(--surface-light);
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
}

/* Limited Drops Section */
.limited-drop-section {
  background: linear-gradient(180deg, var(--bg-color) 0%, rgba(52, 211, 153, 0.05) 100%);
  padding: 4rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 4rem;
}

.countdown-container {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
}

.time-box {
  background-color: var(--card-bg);
  border: 1px solid var(--eco-green);
  border-radius: var(--radius-md);
  padding: 1rem;
  min-width: 80px;
  text-align: center;
  box-shadow: 0 0 15px var(--eco-green-glow);
}

.time-val {
  font-size: 2rem;
  font-weight: 800;
  font-family: var(--font-display);
  color: var(--eco-green);
}

.time-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.drop-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 2rem;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--surface-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-color);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--eco-green);
  box-shadow: 0 0 0 2px var(--eco-green-glow);
}

/* Auth specific */
.auth-container {
  width: 100%;
  max-width: 400px;
  margin: 4rem auto;
  background-color: var(--card-bg);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  box-sizing: border-box;
}

.auth-tabs {
  display: flex;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.auth-tab {
  flex: 1;
  text-align: center;
  padding: 1rem;
  cursor: pointer;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 2px solid transparent;
}

.auth-tab.active {
  color: var(--eco-green);
  border-bottom-color: var(--eco-green);
}

/* STL Upload Area */
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  text-align: center;
  background-color: var(--card-bg);
  transition: var(--transition);
  cursor: pointer;
  margin-bottom: 2rem;
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--eco-green);
  background-color: rgba(52, 211, 153, 0.05);
}

.upload-icon {
  font-size: 3rem;
  color: var(--eco-green);
  margin-bottom: 1rem;
}

#stl-canvas-container {
  width: 100%;
  height: 400px;
  background-color: #0a0b0a;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  margin-bottom: 2rem;
  position: relative;
}

.viewer-overlay {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(0,0,0,0.7);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(5px);
  border: 1px solid var(--border-color);
}

/* Quote Panel */
.quote-panel {
  background-color: var(--card-bg);
  border: 1px solid var(--eco-green);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 0 20px var(--eco-green-glow);
}

.quote-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

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

.quote-total {
  font-size: 2rem;
  font-weight: 800;
  color: var(--eco-green);
  font-family: var(--font-display);
}

.warning-alert {
  background-color: rgba(239, 68, 68, 0.1);
  border-left: 4px solid var(--danger);
  padding: 1rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Admin Dashboard */
.admin-table-wrapper {
  overflow-x: auto;
  background-color: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th, .admin-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.admin-table th {
  background-color: var(--surface-light);
  font-weight: 600;
  color: var(--text-muted);
}

.admin-table tr:hover {
  background-color: var(--surface-light);
}

/* Mission Page specific */
.mission-hero {
  background: url('https://images.unsplash.com/photo-1615810220461-1c3905b76615?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80') center/cover;
  position: relative;
}

.mission-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--bg-color) 0%, rgba(18,20,19,0.7) 100%);
}

.mission-content {
  position: relative;
  z-index: 1;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin: 4rem 0;
}

.stat-card {
  text-align: center;
  padding: 2rem;
  background-color: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.stat-val {
  font-size: 3rem;
  font-weight: 800;
  color: var(--eco-green);
  font-family: var(--font-display);
}

/* Footer */
footer {
  background-color: var(--card-bg);
  padding: 4rem 0 2rem 0;
  border-top: 1px solid var(--border-color);
  margin-top: 6rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--text-color);
  margin-bottom: 1.5rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.75rem;
}

.footer-bottom {
  text-align: center;
  color: var(--text-muted);
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

/* Cart UI */
.cart-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.cart-overlay.active {
  opacity: 1;
  visibility: visible;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  max-width: 100vw;
  height: 100vh;
  background-color: var(--card-bg);
  box-shadow: -5px 0 30px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border-color);
}

.cart-drawer.open {
  transform: translateX(-400px);
}

.cart-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cart-header h2 {
  margin: 0;
  font-size: 1.5rem;
}

.close-cart {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.close-cart:hover {
  color: var(--danger);
}

.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
}

.cart-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.cart-item-info {
  flex: 1;
}

.cart-item-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.cart-item-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.cart-item-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.qty-btn {
  background: var(--surface-light);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  width: 24px;
  height: 24px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.qty-btn:hover {
  border-color: var(--eco-green);
  color: var(--eco-green);
}

.remove-item {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  text-decoration: underline;
  margin-left: auto;
}

.remove-item:hover {
  color: var(--danger);
}

.cart-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--surface-light);
}

.cart-total {
  display: flex;
  justify-content: space-between;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

.nav-cart-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.cart-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background-color: var(--eco-green);
  color: #000;
  font-size: 0.75rem;
  font-weight: 800;
  border-radius: 99px;
  padding: 0.1rem 0.4rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none; /* In a real app, we'd add a hamburger menu */
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .drop-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Light Mode Theme overrides */
body.light-mode, html.light-mode body {
  --bg-color: #f4f5f7;
  --card-bg: #ffffff;
  --text-color: #1a1a1a;
  --text-muted: #555555;
  --surface-light: #e5e7eb;
  --border-color: #d1d5db;
  background-image: 
    linear-gradient(rgba(0, 0, 0, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.05) 1px, transparent 1px);
}

/* Theme Toggle Button */
.nav-theme-toggle {
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
  transition: var(--transition);
}
.nav-theme-toggle:hover {
  color: var(--eco-green);
}

/* Storefront Lightbox Modal */
.lightbox-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox-modal.active {
  opacity: 1;
  pointer-events: all;
}

.lightbox-content {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 800px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

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

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  z-index: 10;
}

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

.lightbox-image {
  width: 100%;
  border-radius: var(--radius-md);
  object-fit: cover;
  background: var(--surface-light);
}

/* Fluid Primary Wrappers */
.dashboard, .order-card {
  width: 100%;
  max-width: 800px;
  box-sizing: border-box;
}

/* Mobile Breakpoint Fixes */
@media (max-width: 768px) {
    .flex-row-container, .order-header, .navbar {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 1rem;
    }
}