/* DFoffer - Blue Minimalist Design System */

:root {
  /* Blue-Centered Color Palette */
  --primary-blue: #007AFF;
  --secondary-blue: #5AC8FA;
  --accent-blue: #0056CC;
  --light-blue: #E3F2FD;
  --dark-blue: #1565C0;
  
  /* Neutral Supporting Colors */
  --gray-50: #FAFAFA;
  --gray-100: #F5F5F5;
  --gray-200: #E0E0E0;
  --gray-300: #BDBDBD;
  --gray-500: #757575;
  --gray-700: #424242;
  --gray-900: #212121;
  
  /* System Colors */
  --background-white: #FFFFFF;
  --text-primary: #212121;
  --text-secondary: #757575;
  --success-color: #4CAF50;
  --warning-color: #FF9800;
  --error-color: #F44336;
  
  /* Typography */
  --font-system: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  
  /* Spacing (8px grid) */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  
  /* Borders & Shadows */
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-color: var(--gray-200);
  --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-heavy: 0 10px 20px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-smooth: 0.3s ease-in-out;
  
  /* Icon Colors */
  --icon-primary: var(--primary-blue);
  --icon-secondary: var(--gray-500);
  --icon-laser: #FF6B35;
  --icon-cnc: var(--secondary-blue);
  --icon-material: #9C27B0;
  --icon-accent: var(--warning-color);
  --icon-warning: var(--warning-color);
  --icon-success: var(--success-color);
  
  /* Card & Component Colors */
  --background-card: var(--background-white);
  --light-gray: var(--gray-100);
}

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

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-system);
  color: var(--text-primary);
  background-color: var(--background-white);
  font-weight: 400;
  overflow-x: hidden;
}

/* Typography System */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

h2 {
  font-size: 2rem;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.5rem;
  letter-spacing: -0.015em;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Technical Input Components */
.input-group {
  margin-bottom: var(--spacing-lg);
}

.input-label {
  display: block;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 0.9rem;
}

.input-field {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: var(--font-mono);
  font-size: 1rem;
  background-color: var(--background-white);
  transition: all var(--transition-fast);
}

.input-field:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.input-field:invalid {
  border-color: var(--warning-color);
}

/* Precision Select Dropdown */
.select-field {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: var(--background-white);
  font-family: var(--font-system);
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.select-field:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

/* Industrial Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-family: var(--font-system);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: #0056CC;
  transform: translateY(-1px);
  box-shadow: var(--shadow-medium);
}

.btn-secondary {
  background-color: var(--light-gray);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--gray-200);
}

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

.btn-accent:hover {
  background-color: #003A95;
}

/* Technical Results Display */
.results-container {
  background-color: var(--gray-50);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  border: 1px solid var(--border-color);
}

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

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

.result-label {
  font-weight: 500;
  color: var(--text-primary);
}

.result-value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--primary-blue);
  font-size: 1.1rem;
}

.result-unit {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-left: var(--spacing-xs);
}

/* Industrial Card System */
.card {
  background-color: var(--background-white);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-color);
  transition: all var(--transition-smooth);
}

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

.card-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.card-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Precision Grid System */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Technical Status Indicators */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 500;
}

.status-success {
  background-color: rgba(76, 175, 80, 0.1);
  color: var(--success-color);
}

.status-warning {
  background-color: rgba(255, 152, 0, 0.1);
  color: var(--warning-color);
}

.status-error {
  background-color: rgba(244, 67, 54, 0.1);
  color: var(--error-color);
}

/* Manufacturing Precision Tables */
.table-container {
  overflow-x: auto;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.precision-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.precision-table th {
  background-color: var(--gray-50);
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

.precision-table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--gray-100);
  color: var(--text-secondary);
}

.precision-table tr:hover {
  background-color: rgba(0, 122, 255, 0.02);
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-xxl: 32px;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .btn {
    padding: var(--spacing-md);
    width: 100%;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Print Styles for Technical Documentation */
@media print {
  .btn,
  .ad-container,
  .navigation {
    display: none !important;
  }
  
  .results-container {
    border: 2px solid #000;
    background-color: white;
  }
  
  .precision-table {
    border: 1px solid #000;
  }
  
  .precision-table th,
  .precision-table td {
    border: 1px solid #000;
  }
}

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

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

/* ===== HOMEPAGE STYLES ===== */

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--gray-50) 0%, rgba(0, 122, 255, 0.05) 100%);
  padding: var(--spacing-xxl) 0;
  margin-bottom: var(--spacing-xxl);
}

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

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.5;
}

.hero-specs {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.spec-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--text-primary);
  font-weight: 500;
}

.spec-item .icon {
  color: var(--primary-blue);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: 1.1rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.machine-showcase {
  position: relative;
}

.machine-card {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  color: white;
  padding: var(--spacing-xl);
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 20px 40px rgba(0, 122, 255, 0.3);
  min-width: 300px;
}

.machine-card.featured {
  transform: scale(1.05);
}

.machine-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: var(--spacing-md) 0 var(--spacing-sm);
}

.machine-card p {
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

/* Performance Metrics Section */
.metrics-section {
  background: var(--background-white);
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--border-color);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
}

.metrics-grid .metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--gray-50) 0%, rgba(0, 122, 255, 0.02) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-smooth);
}

.metrics-grid .metric-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
  border-color: var(--primary-blue);
}

.metrics-grid .metric-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-blue);
  margin-bottom: var(--spacing-xs);
  font-family: var(--font-mono);
  line-height: 1;
}

.metrics-grid .metric-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1.4;
}

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

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

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

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

.category-card {
  background: var(--background-white);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: var(--spacing-xl);
  transition: all var(--transition-smooth);
  box-shadow: var(--shadow-light);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-heavy);
  border-color: var(--primary-blue);
}

.category-card.featured {
  border: 2px solid var(--primary-blue);
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.02) 0%, var(--background-white) 100%);
}

.category-header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.category-card .category-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.category-card .category-icon.laser {
  background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
}

.category-card .category-icon.cnc {
  background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary-blue) 100%);
}

.category-card .category-icon.material {
  background: linear-gradient(135deg, #9C27B0 0%, #7B1FA2 100%);
}

.category-card .category-icon.cost {
  background: linear-gradient(135deg, #4CAF50 0%, #388E3C 100%);
}

.category-card .category-icon.converter {
  background: linear-gradient(135deg, var(--warning-color) 0%, #F57C00 100%);
}

.category-icon .icon {
  color: white;
  font-size: 1.5rem;
}

.category-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.category-description {
  color: var(--text-secondary);
  line-height: 1.5;
}

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

.tool-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--gray-50);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  position: relative;
}

.tool-link:hover {
  background: rgba(0, 122, 255, 0.05);
  border-color: var(--primary-blue);
}

.tool-link.primary {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.1) 0%, rgba(0, 122, 255, 0.05) 100%);
  border-color: var(--primary-blue);
}

.tool-link .icon {
  color: var(--primary-blue);
}

.tool-badge {
  position: absolute;
  top: -8px;
  right: 8px;
  background: var(--primary-blue);
  color: white;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Advantage Section */
.advantage-section {
  background: var(--gray-50);
  padding: var(--spacing-xxl) 0;
  margin: var(--spacing-xxl) 0;
}

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

.advantage-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--background-white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
}

.advantage-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.advantage-item p {
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* Responsive Design for Homepage */
@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-specs {
    align-items: center;
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .btn-lg {
    width: 100%;
    justify-content: center;
  }
  
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
  
  .metric-value {
    font-size: 2rem;
  }
  
  .categories-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .category-header {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }
  
  .advantage-item {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  
  .machine-card {
    min-width: 250px;
  }
}

/* Industry Applications Section */
.applications-section {
  background: var(--background-white);
  padding: var(--spacing-xxl) 0;
  border-top: 1px solid var(--border-color);
}

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

.application-card {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--background-white);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: all var(--transition-smooth);
  box-shadow: var(--shadow-light);
}

.application-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-heavy);
  border-color: var(--primary-blue);
}

.application-card .icon {
  color: var(--primary-blue);
  margin-bottom: var(--spacing-md);
}

.application-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.application-card p {
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

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

.metric-item.animate-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

.metric-item {
  opacity: 0;
}

/* Additional responsive design for applications */
@media (max-width: 768px) {
  .applications-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .applications-grid {
    grid-template-columns: 1fr;
  }
}