/* SASOL Mining Proposal - Revolutionary CSS Design */

/* CSS Custom Properties */
:root {
  /* Color Palette */
  --primary-color: #1a365d;
  --primary-light: #2d5a87;
  --primary-dark: #0f2a44;
  --secondary-color: #065f46;
  --secondary-light: #059669;
  --accent-color: #d97706;
  --accent-light: #f59e0b;
  --accent-dark: #b45309;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  --info-color: #3b82f6;
  
  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #1a365d 0%, #2563eb 100%);
  --gradient-secondary: linear-gradient(135deg, #065f46 0%, #059669 100%);
  --gradient-accent: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
  --gradient-hero: linear-gradient(135deg, rgba(26, 54, 93, 0.95) 0%, rgba(6, 95, 70, 0.9) 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(217, 119, 6, 0.3);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-normal: 300ms ease-out;
  --transition-slow: 500ms ease-out;
  --transition-bounce: 300ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Global Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--gray-600);
}

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

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

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  color: var(--white);
}

.loading-logo {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  animation: pulse 2s infinite;
}

.loading-text h3 {
  color: var(--white);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.loading-text p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-xl);
}

.loading-progress {
  width: 200px;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0 auto;
}

.loading-progress .progress-bar {
  height: 100%;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  animation: loading 2s ease-in-out infinite;
}

@keyframes loading {
  0% { width: 0%; }
  50% { width: 70%; }
  100% { width: 100%; }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

/* Navigation */
.navbar {
  background: rgba(26, 54, 93, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition-normal);
  padding: var(--spacing-md) 0;
}

.navbar.scrolled {
  background: rgba(26, 54, 93, 0.98);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-sm) 0;
}

.navbar-brand {
  font-weight: var(--font-weight-extrabold);
  font-size: 1.25rem;
  color: var(--white) !important;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar-brand i {
  font-size: 1.5rem;
  color: var(--accent-color);
}

.navbar-toggler {
  border: none;
  padding: var(--spacing-sm);
  width: 40px;
  height: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.navbar-toggler span {
  width: 20px;
  height: 2px;
  background: var(--white);
  transition: var(--transition-normal);
  border-radius: var(--radius-full);
}

.navbar-toggler.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggler.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggler.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

.nav-link {
  color: rgba(255, 255, 255, 0.9) !important;
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) var(--spacing-md) !important;
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-color) !important;
  background: rgba(217, 119, 6, 0.1);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  transition: var(--transition-normal);
  transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 80%;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26, 54, 93, 0.95) 0%, rgba(6, 95, 70, 0.9) 100%),
              url('https://images.pexels.com/photos/162568/coal-anthracite-coal-mining-heating-162568.jpeg?auto=compress&cs=tinysrgb&w=1920&h=1080&fit=crop') center/cover;
  z-index: -2;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 70%, rgba(217, 119, 6, 0.1) 0%, transparent 50%);
  z-index: -1;
}

.particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.hero-content {
  position: relative;
  z-index: 2;
  color: var(--white);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(217, 119, 6, 0.2);
  border: 1px solid rgba(217, 119, 6, 0.3);
  color: var(--accent-color);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-xl);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: var(--font-weight-black);
  line-height: 1.1;
  margin-bottom: var(--spacing-xl);
  color: var(--white);
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.accent-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-top: var(--spacing-sm);
}

.hero-description {
  font-size: 1.25rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

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

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

.stat-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  transition: var(--transition-normal);
  opacity: 0;
  transform: translateY(30px) scale(0.9);
}

.stat-card:hover {
  transform: translateY(-5px) scale(1.02);
  background: rgba(255, 255, 255, 0.15);
}

.stat-icon {
  font-size: 2rem;
  color: var(--accent-color);
  margin-bottom: var(--spacing-md);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: var(--font-weight-black);
  color: var(--white);
  line-height: 1;
}

.stat-unit {
  font-size: 1rem;
  color: var(--accent-color);
  font-weight: var(--font-weight-semibold);
}

.stat-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
  margin-top: var(--spacing-sm);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-arrow {
  width: 40px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.8);
  animation: bounce 2s infinite;
  cursor: pointer;
  transition: var(--transition-normal);
}

.scroll-arrow:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

/* Section Styles */
section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.overview-section {
  background: var(--gray-50);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(217, 119, 6, 0.1);
  border: 1px solid rgba(217, 119, 6, 0.2);
  color: var(--accent-color);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--font-weight-black);
  color: var(--gray-900);
  margin-bottom: var(--spacing-lg);
}

.section-description {
  font-size: 1.125rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 0;
}

/* Feature Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--white);
  margin-bottom: var(--spacing-xl);
  transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
}

.feature-content h4 {
  color: var(--gray-900);
  margin-bottom: var(--spacing-md);
}

.feature-content p {
  color: var(--gray-600);
  margin-bottom: 0;
}

.feature-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(217, 119, 6, 0.1) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: var(--transition-slow);
  pointer-events: none;
}

.feature-card:hover .feature-glow {
  opacity: 1;
}

/* Stockpiles Section */
.stockpiles-section {
  background: var(--white);
}

.stockpile-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-xl);
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
}

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

.control-group label {
  font-weight: var(--font-weight-semibold);
  color: var(--gray-700);
  font-size: 0.875rem;
}

.filter-buttons,
.view-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.filter-btn,
.view-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--gray-300);
  background: var(--white);
  color: var(--gray-600);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  transition: var(--transition-normal);
  cursor: pointer;
}

.filter-btn:hover,
.view-btn:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

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

.stockpiles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
  transition: var(--transition-normal);
}

.stockpile-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: var(--transition-normal);
  cursor: pointer;
}

.stockpile-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.stockpile-card .card-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.stockpile-number {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-black);
  font-size: 1.25rem;
  color: var(--white);
}

.stockpile-info h5 {
  margin-bottom: var(--spacing-xs);
  color: var(--gray-900);
}

.priority-badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
}

.priority-high {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
}

.priority-medium {
  background: rgba(245, 158, 11, 0.1);
  color: #d97706;
}

.priority-low {
  background: rgba(59, 130, 246, 0.1);
  color: #2563eb;
}

.stockpile-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-indicator.active {
  background: var(--success-color);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.status-indicator.pending {
  background: var(--warning-color);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
}

.stockpile-card .card-body {
  padding: var(--spacing-xl);
}

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

.metric {
  text-align: center;
}

.metric-value {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  line-height: 1.2;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--gray-500);
  font-weight: var(--font-weight-medium);
  margin-top: var(--spacing-xs);
}

.stockpile-shape {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--gray-50);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: var(--gray-600);
  margin-bottom: var(--spacing-lg);
}

.stockpile-shape i {
  color: var(--accent-color);
}

.progress-section {
  margin-bottom: var(--spacing-lg);
}

.progress-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--gray-700);
}

.progress-bar {
  height: 6px;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

.stockpile-card .card-footer {
  padding: var(--spacing-xl);
  border-top: 1px solid var(--gray-200);
  display: flex;
  gap: var(--spacing-md);
}

/* Analytics Dashboard */
.analytics-dashboard {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  margin-bottom: var(--spacing-3xl);
}

.dashboard-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--gray-50);
}

.dashboard-header h3 {
  margin-bottom: 0;
  color: var(--gray-900);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.dashboard-tabs {
  display: flex;
  gap: var(--spacing-sm);
}

.tab-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--gray-300);
  background: var(--white);
  color: var(--gray-600);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  transition: var(--transition-normal);
  cursor: pointer;
}

.tab-btn:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

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

.dashboard-content {
  padding: var(--spacing-xl);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.chart-container {
  height: 400px;
  margin-bottom: var(--spacing-xl);
}

.summary-stats {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid var(--gray-200);
}

.summary-stats h5 {
  margin-bottom: var(--spacing-lg);
  color: var(--gray-900);
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--gray-200);
}

.stat-item:last-child {
  border-bottom: none;
}

.stat-item span {
  color: var(--gray-600);
}

.stat-item strong {
  color: var(--gray-900);
  font-weight: var(--font-weight-semibold);
}

/* Timeline View */
.timeline-view {
  padding: var(--spacing-xl);
}

.timeline-chart {
  position: relative;
  padding-left: var(--spacing-xl);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-xl);
  margin-left: var(--spacing-xl);
}

.timeline-item:not(:last-child)::before {
  content: '';
  position: absolute;
  left: -25px;
  top: 30px;
  width: 2px;
  height: calc(100% - 10px);
  background: var(--gray-300);
}

.timeline-marker {
  position: absolute;
  left: -30px;
  top: 5px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--white);
  box-shadow: var(--shadow-sm);
}

.timeline-marker.completed {
  background: var(--success-color);
}

.timeline-marker.active {
  background: var(--accent-color);
}

.timeline-marker.pending {
  background: var(--gray-400);
}

.timeline-content h6 {
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.timeline-content p {
  margin-bottom: var(--spacing-sm);
  color: var(--gray-600);
  font-size: 0.875rem;
}

.timeline-date {
  font-size: 0.75rem;
  color: var(--gray-500);
  font-weight: var(--font-weight-medium);
}

/* Comparison Table */
.comparison-view {
  padding: var(--spacing-xl);
}

.comparison-table {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table {
  margin-bottom: 0;
}

.table th {
  background: var(--gray-50);
  border-bottom: 2px solid var(--gray-200);
  font-weight: var(--font-weight-semibold);
  color: var(--gray-700);
  padding: var(--spacing-md);
}

.table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--gray-200);
  vertical-align: middle;
}

.table tbody tr:hover {
  background: var(--gray-50);
}

/* Map Section */
.map-section {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  margin-top: var(--spacing-3xl);
}

.map-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-50);
  text-align: center;
}

.map-header h4 {
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.map-header p {
  margin-bottom: 0;
  color: var(--gray-600);
}

.map-container {
  height: 400px;
  position: relative;
}

.google-map {
  width: 100%;
  height: 100%;
  border: none;
}

.coordinates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: var(--gray-50);
}

.coordinate-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  transition: var(--transition-normal);
}

.coordinate-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.coordinate-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-accent);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.coordinate-info h6 {
  margin-bottom: var(--spacing-xs);
  color: var(--gray-900);
}

.coordinate-info p {
  margin-bottom: 0;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  color: var(--gray-600);
  font-weight: var(--font-weight-medium);
}

/* Sampling Section */
.sampling-section {
  background: var(--gray-50);
}

.sampling-dashboard {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
}

.dashboard-nav {
  display: flex;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}

.nav-btn {
  flex: 1;
  padding: var(--spacing-lg);
  border: none;
  background: transparent;
  color: var(--gray-600);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-normal);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.nav-btn.active {
  background: var(--white);
  color: var(--accent-color);
  border-bottom: 3px solid var(--accent-color);
}

.nav-btn i {
  font-size: 1.5rem;
}

.dashboard-panel {
  display: none;
  padding: var(--spacing-2xl);
}

.dashboard-panel.active {
  display: block;
}

/* Overview Metrics */
.overview-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.metric-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  transition: var(--transition-normal);
}

.metric-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.metric-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--white);
  flex-shrink: 0;
}

.metric-content {
  flex: 1;
}

.metric-number {
  font-size: 2.5rem;
  font-weight: var(--font-weight-black);
  color: var(--gray-900);
  line-height: 1;
}

.metric-label {
  font-size: 1.125rem;
  font-weight: var(--font-weight-semibold);
  color: var(--gray-700);
  margin-bottom: var(--spacing-xs);
}

.metric-description {
  font-size: 0.875rem;
  color: var(--gray-500);
}

.metric-progress {
  position: relative;
  flex-shrink: 0;
}

.circular-progress {
  position: relative;
  width: 60px;
  height: 60px;
}

.progress-ring {
  transform: rotate(-90deg);
}

.progress-ring-circle {
  fill: none;
  stroke: var(--gray-200);
  stroke-width: 3;
  stroke-dasharray: 157;
  stroke-dashoffset: 157;
  transition: stroke-dashoffset 1s ease-out;
}

.progress-ring-circle[data-progress] {
  stroke: var(--accent-color);
}

.progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  color: var(--gray-700);
}

/* Sampling Grid */
.sampling-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.sampling-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  transition: var(--transition-normal);
}

.sampling-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.sampling-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

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

.sampling-number {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-black);
  color: var(--white);
}

.sampling-info h6 {
  margin-bottom: var(--spacing-xs);
  color: var(--gray-900);
}

.sampling-info span {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.sampling-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.sampling-status.active .status-dot {
  background: var(--success-color);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.sampling-status.pending .status-dot {
  background: var(--warning-color);
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
}

.sampling-metrics {
  margin-bottom: var(--spacing-lg);
}

.metric-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.metric-item {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--gray-50);
  border-radius: var(--radius-md);
}

.metric-item .metric-value {
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  display: block;
}

.metric-item .metric-label {
  font-size: 0.75rem;
  color: var(--gray-500);
  font-weight: var(--font-weight-medium);
}

.sampling-progress {
  margin-top: var(--spacing-lg);
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--gray-700);
}

/* Methodology Grid */
.methodology-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.method-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  transition: var(--transition-normal);
}

.method-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.method-icon {
  width: 70px;
  height: 70px;
  background: var(--gradient-accent);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: var(--white);
  margin-bottom: var(--spacing-lg);
}

.method-content h5 {
  margin-bottom: var(--spacing-md);
  color: var(--gray-900);
}

.method-content p {
  margin-bottom: var(--spacing-lg);
  color: var(--gray-600);
}

.method-specs {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--gray-200);
}

.spec-item:last-child {
  border-bottom: none;
}

.spec-label {
  font-size: 0.875rem;
  color: var(--gray-600);
}

.spec-value {
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  color: var(--gray-900);
}

/* Technique Section */
.technique-section {
  margin-top: var(--spacing-3xl);
}

.technique-section h4 {
  margin-bottom: var(--spacing-xl);
  color: var(--gray-900);
  text-align: center;
}

.technique-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.technique-card {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid var(--gray-200);
  transition: var(--transition-normal);
}

.technique-card:hover {
  background: var(--white);
  box-shadow: var(--shadow-md);
}

.technique-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-secondary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--white);
  margin-bottom: var(--spacing-lg);
}

.technique-content h6 {
  margin-bottom: var(--spacing-md);
  color: var(--gray-900);
}

.technique-content p,
.technique-content ul {
  color: var(--gray-600);
  margin-bottom: 0;
}

.technique-content ul {
  padding-left: var(--spacing-lg);
}

.technique-content li {
  margin-bottom: var(--spacing-xs);
}

/* Quality Control */
.quality-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.quality-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  text-align: center;
  transition: var(--transition-normal);
}

.quality-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.quality-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-secondary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--white);
  margin: 0 auto var(--spacing-lg);
}

.quality-content h5 {
  margin-bottom: var(--spacing-md);
  color: var(--gray-900);
}

.quality-content p {
  margin-bottom: var(--spacing-lg);
  color: var(--gray-600);
}

.quality-metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.quality-metric .metric-value {
  font-size: 2rem;
  font-weight: var(--font-weight-black);
  color: var(--accent-color);
}

.quality-metric .metric-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: var(--font-weight-medium);
}

/* Outcomes Section */
.outcomes-section {
  margin-top: var(--spacing-3xl);
}

.outcomes-section h4 {
  margin-bottom: var(--spacing-xl);
  color: var(--gray-900);
  text-align: center;
}

.outcomes-table {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}

/* Standards Section */
.standards-section {
  margin-top: var(--spacing-3xl);
}

.standards-section h4 {
  margin-bottom: var(--spacing-xl);
  color: var(--gray-900);
  text-align: center;
}

.standards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.standard-card {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--gray-200);
  text-align: center;
  transition: var(--transition-normal);
}

.standard-card:hover {
  background: var(--white);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.standard-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--white);
  margin: 0 auto var(--spacing-md);
}

.standard-content h6 {
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.standard-content p {
  margin-bottom: 0;
  color: var(--gray-600);
  font-size: 0.875rem;
}

/* 3D Visualization */
.visualization-content {
  text-align: center;
}

.visualization-content h4 {
  margin-bottom: var(--spacing-xl);
  color: var(--gray-900);
}

.visualization-container {
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  padding: var(--spacing-3xl);
  border: 2px dashed var(--gray-300);
  margin-bottom: var(--spacing-xl);
}

.visualization-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.placeholder-content {
  text-align: center;
  max-width: 500px;
}

.placeholder-content i {
  font-size: 4rem;
  color: var(--accent-color);
  margin-bottom: var(--spacing-lg);
}

.placeholder-content h5 {
  margin-bottom: var(--spacing-md);
  color: var(--gray-900);
}

.placeholder-content p {
  margin-bottom: var(--spacing-xl);
  color: var(--gray-600);
}

.visualization-features {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--gray-600);
}

.feature-item i {
  font-size: 1.5rem;
  color: var(--accent-color);
}

/* Methodology Section */
.methodology-section {
  background: var(--white);
}

.qaqc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.qaqc-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  text-align: center;
  transition: var(--transition-normal);
}

.qaqc-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.qaqc-icon {
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--white);
  margin: 0 auto var(--spacing-xl);
}

.qaqc-content h5 {
  margin-bottom: var(--spacing-md);
  color: var(--gray-900);
}

.qaqc-content p {
  margin-bottom: var(--spacing-lg);
  color: var(--gray-600);
}

.qaqc-metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.qaqc-metric .metric-number {
  font-size: 2.5rem;
  font-weight: var(--font-weight-black);
  color: var(--accent-color);
}

.qaqc-metric .metric-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: var(--font-weight-medium);
}

/* Timeline Section */
.timeline-section {
  background: var(--gray-50);
}

.timeline-container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.timeline-phase {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
  position: relative;
}

.timeline-phase:last-child {
  margin-bottom: 0;
}

.phase-marker {
  position: relative;
  flex-shrink: 0;
  z-index: 2;
}

.marker-number {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: var(--font-weight-black);
  color: var(--white);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.marker-line {
  position: absolute;
  top: 60px;
  left: 50%;
  width: 2px;
  height: 100px;
  background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
  transform: translateX(-50%);
}

.timeline-phase:last-child .marker-line {
  display: none;
}

.phase-content {
  flex: 1;
  min-width: 0;
}

.phase-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: var(--transition-normal);
}

.phase-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-2xl);
}

.phase-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--gray-50);
}

.phase-title h4 {
  margin-bottom: var(--spacing-xs);
  color: var(--gray-900);
}

.phase-duration {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: var(--font-weight-medium);
}

.phase-priority {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
}

.phase-priority.high {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
}

.phase-priority.medium {
  background: rgba(245, 158, 11, 0.1);
  color: #d97706;
}

.phase-priority.low {
  background: rgba(59, 130, 246, 0.1);
  color: #2563eb;
}

.phase-body {
  padding: var(--spacing-xl);
}

.phase-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.phase-metrics .metric-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--gray-50);
  border-radius: var(--radius-md);
}

.phase-metrics .metric-item i {
  font-size: 1.25rem;
  color: var(--accent-color);
  flex-shrink: 0;
}

.phase-metrics .metric-content {
  flex: 1;
  min-width: 0;
}

.phase-metrics .metric-value {
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  line-height: 1.2;
}

.phase-metrics .metric-label {
  font-size: 0.75rem;
  color: var(--gray-500);
  font-weight: var(--font-weight-medium);
}

.phase-progress {
  margin-top: var(--spacing-lg);
}

.phase-progress .progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  color: var(--gray-700);
}

/* Timeline Summary */
.timeline-summary {
  margin-top: var(--spacing-3xl);
}

.summary-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
}

.summary-header {
  padding: var(--spacing-xl);
  background: var(--gray-900);
  color: var(--white);
  text-align: center;
}

.summary-header h4 {
  margin-bottom: 0;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.summary-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  padding: var(--spacing-2xl);
}

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

.summary-metric .metric-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-accent);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--white);
  margin: 0 auto var(--spacing-md);
}

.summary-metric .metric-number {
  font-size: 2rem;
  font-weight: var(--font-weight-black);
  color: var(--gray-900);
  line-height: 1;
}

.summary-metric .metric-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: var(--font-weight-medium);
  margin-top: var(--spacing-xs);
}

/* Investment Section */
.investment-section {
  background: var(--white);
}

.investment-dashboard {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
}

.investment-dashboard .dashboard-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-50);
}

.investment-dashboard .dashboard-header h4 {
  margin-bottom: 0;
  color: var(--gray-900);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.investment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.investment-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: var(--transition-normal);
}

.investment-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.investment-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-lg);
}

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

.investment-number {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-black);
  color: var(--white);
}

.investment-info h6 {
  margin-bottom: var(--spacing-xs);
  color: var(--gray-900);
}

.investment-info span {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.investment-amount {
  text-align: right;
}

.amount-value {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  line-height: 1.2;
}

.amount-breakdown {
  margin-top: var(--spacing-xs);
}

.amount-breakdown small {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.investment-progress {
  margin-top: var(--spacing-lg);
}

.investment-progress .progress-bar {
  height: 6px;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

.investment-progress .progress-fill {
  height: 100%;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

.investment-progress small {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.cost-summary {
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  color: var(--white);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-lg);
}

.summary-header {
  margin-bottom: var(--spacing-xl);
}

.summary-header h4 {
  margin-bottom: 0;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.cost-items {
  margin-bottom: var(--spacing-xl);
}

.cost-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.cost-item:last-child {
  border-bottom: none;
}

.cost-item span {
  color: rgba(255, 255, 255, 0.9);
}

.cost-item strong {
  color: var(--white);
  font-weight: var(--font-weight-semibold);
}

.cost-total {
  padding: var(--spacing-lg) 0;
  border-top: 2px solid rgba(255, 255, 255, 0.3);
  margin-bottom: var(--spacing-xl);
}

.total-amount {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.total-amount span {
  font-size: 1.125rem;
  font-weight: var(--font-weight-semibold);
  color: var(--white);
}

.total-amount strong {
  font-size: 1.5rem;
  font-weight: var(--font-weight-black);
  color: var(--accent-color);
}

.cost-total small {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.8);
}

.roi-section {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.roi-section h6 {
  margin-bottom: var(--spacing-md);
  color: var(--white);
}

.benefit-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.9);
}

.benefit-item i {
  color: var(--accent-color);
  flex-shrink: 0;
}

/* Contact Section */
.contact-section {
  background: var(--gray-900);
  color: var(--white);
}

.contact-section .section-badge {
  background: rgba(217, 119, 6, 0.2);
  border-color: rgba(217, 119, 6, 0.3);
  color: var(--accent-color);
}

.contact-section .section-title {
  color: var(--white);
}

.contact-section .section-description {
  color: rgba(255, 255, 255, 0.8);
}

.contact-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.contact-avatar {
  font-size: 4rem;
  color: var(--accent-color);
  margin-bottom: var(--spacing-lg);
}

.contact-info h4 {
  color: var(--white);
  margin-bottom: var(--spacing-sm);
}

.contact-title {
  font-size: 1.125rem;
  color: var(--accent-color);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-lg);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  text-align: left;
  max-width: 500px;
  margin: 0 auto;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  color: rgba(255, 255, 255, 0.9);
}

.contact-item i {
  color: var(--accent-color);
  font-size: 1.125rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-item a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: var(--transition-normal);
}

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

.contact-actions {
  margin-bottom: var(--spacing-2xl);
}

.company-info {
  margin-top: var(--spacing-3xl);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.info-card {
  text-align: center;
  padding: var(--spacing-xl);
  transition: var(--transition-normal);
}

.info-card:hover {
  transform: translateY(-5px);
}

.info-icon {
  font-size: 2.5rem;
  color: var(--accent-color);
  margin-bottom: var(--spacing-md);
}

.info-content h6 {
  color: var(--white);
  margin-bottom: var(--spacing-sm);
}

.info-content p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0;
}

/* Footer */
.footer {
  background: var(--primary-color);
  color: var(--white);
  padding: var(--spacing-xl) 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-left p,
.footer-right p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.875rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  font-size: 0.875rem;
  text-decoration: none;
  transition: var(--transition-normal);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.75rem;
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1rem;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--white);
}

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

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

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--white);
  background: transparent;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
  color: var(--white);
}

/* Badges */
.badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
}

.bg-success {
  background-color: var(--success-color) !important;
}

.bg-warning {
  background-color: var(--warning-color) !important;
}

.bg-info {
  background-color: var(--info-color) !important;
}

.bg-danger {
  background-color: var(--error-color) !important;
}

.bg-secondary {
  background-color: var(--gray-500) !important;
}

/* Modal */
.modal-content {
  border-radius: var(--radius-xl);
  border: none;
  box-shadow: var(--shadow-2xl);
}

.modal-header {
  border-bottom: 1px solid var(--gray-200);
  padding: var(--spacing-xl);
}

.modal-body {
  padding: var(--spacing-xl);
}

.modal-footer {
  border-top: 1px solid var(--gray-200);
  padding: var(--spacing-xl);
}

.btn-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--gray-500);
  cursor: pointer;
}

/* Responsive Design */
@media (max-width: 1200px) {
  .stockpiles-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  }
  
  .timeline-phase {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .marker-line {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-3xl: 3rem;
  }
  
  .hero-section {
    min-height: 90vh;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .stockpiles-grid {
    grid-template-columns: 1fr;
  }
  
  .stockpile-controls {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .control-group {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .metrics-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .dashboard-nav {
    flex-wrap: wrap;
  }
  
  .nav-btn {
    flex: 1;
    min-width: 120px;
  }
  
  .overview-metrics {
    grid-template-columns: 1fr;
  }
  
  .sampling-grid {
    grid-template-columns: 1fr;
  }
  
  .methodology-grid {
    grid-template-columns: 1fr;
  }
  
  .quality-grid {
    grid-template-columns: 1fr;
  }
  
  .technique-grid {
    grid-template-columns: 1fr;
  }
  
  .standards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .qaqc-grid {
    grid-template-columns: 1fr;
  }
  
  .phase-metrics {
    grid-template-columns: 1fr;
  }
  
  .summary-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .investment-grid {
    grid-template-columns: 1fr;
  }
  
  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 576px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn {
    justify-content: center;
  }
  
  .dashboard-nav {
    flex-direction: column;
  }
  
  .nav-btn {
    flex-direction: row;
    justify-content: center;
    padding: var(--spacing-md);
  }
  
  .metric-row {
    grid-template-columns: 1fr;
  }
  
  .phase-metrics {
    grid-template-columns: 1fr;
  }
  
  .summary-metrics {
    grid-template-columns: 1fr;
  }
  
  .standards-grid {
    grid-template-columns: 1fr;
  }
  
  .info-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-details {
    text-align: center;
  }
}

/* Print Styles */
@media print {
  .navbar,
  .scroll-indicator,
  .btn,
  .footer {
    display: none !important;
  }
  
  .hero-section {
    background: var(--white) !important;
    color: var(--gray-900) !important;
    min-height: auto !important;
  }
  
  .hero-title,
  .section-title {
    color: var(--gray-900) !important;
  }
  
  * {
    box-shadow: none !important;
  }
  
  section {
    page-break-inside: avoid;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus States */
.btn:focus,
.nav-link:focus,
.filter-btn:focus,
.view-btn:focus,
.tab-btn:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --gray-200: #000000;
    --gray-300: #000000;
    --gray-400: #000000;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --white: #1f2937;
    --gray-50: #111827;
    --gray-100: #1f2937;
    --gray-200: #374151;
    --gray-300: #4b5563;
    --gray-800: #f9fafb;
    --gray-900: #ffffff;
  }
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Selection */
::selection {
  background: var(--accent-color);
  color: var(--white);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}

/* Loading Animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }

.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }

.mb-0 { margin-bottom: 0; }
.mt-auto { margin-top: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.position-relative { position: relative; }
.position-absolute { position: absolute; }

.overflow-hidden { overflow: hidden; }

.border-0 { border: none; }
.rounded { border-radius: var(--radius-md); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Custom Animations */
@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-10px) rotate(120deg); }
  66% { transform: translateY(5px) rotate(240deg); }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Performance Optimizations */
.gpu-accelerated {
  transform: translateZ(0);
  will-change: transform;
}

.no-select {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Component Specific Styles */
.chart-container canvas {
  max-height: 400px !important;
}

.google-map {
  filter: grayscale(20%) contrast(1.1);
}

.loading-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Final Touches */
body.loaded {
  overflow-x: hidden;
}

.hero-badge,
.hero-title,
.hero-description,
.hero-actions,
.stat-card {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

body.loaded .hero-badge {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.2s;
}

body.loaded .hero-title {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.4s;
}

body.loaded .hero-description {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.6s;
}

body.loaded .hero-actions {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.8s;
}

body.loaded .stat-card {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition-delay: 1s;
}