/*
  Contoso Manufacturing - Brand Stylesheet
  Modern industrial design with deep navy, electric blue, and safety orange accents
  WCAG-compliant color contrast and responsive layout
*/

:root {
  /* Brand Colors */
  --color-navy: #0f1f35;
  --color-graphite: #1a2b3d;
  --color-electric-blue: #0099cc;
  --color-light-blue: #66d9ff;
  --color-safety-orange: #ff6b35;
  --color-accent-warm: #ffb84d;
  --color-neutral-light: #f5f5f5;
  --color-neutral-medium: #e8e8e8;
  --color-neutral-dark: #333333;
  --color-white: #ffffff;
  --color-success: #2ecc71;
  --color-error: #e74c3c;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* 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;
  --spacing-4xl: 6rem;

  /* Layout */
  --container-width: 1200px;
  --container-padding: var(--spacing-xl);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.2);

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-base: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-neutral-dark);
  background-color: var(--color-white);
  overflow-x: hidden;
}

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

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
}

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

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

a:hover {
  color: var(--color-light-blue);
  text-decoration: underline;
}

a:focus {
  outline: 2px solid var(--color-electric-blue);
  outline-offset: 2px;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
  outline: 2px solid var(--color-electric-blue);
  outline-offset: 2px;
}

/* Container */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Grid Layout */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: 1fr 1fr;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Flexbox Utilities */
.flex {
  display: flex;
  gap: var(--spacing-md);
}

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

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

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

/* Header & Navigation */
header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-neutral-medium);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--container-padding);
}

.logo {
  display: flex;
  align-items: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-navy);
  text-decoration: none;
  gap: var(--spacing-sm);
}

.logo svg {
  width: 40px;
  height: 40px;
}

.logo:hover,
.logo:focus {
  color: var(--color-electric-blue);
}

/* Navigation Menu */
nav {
  display: flex;
  gap: var(--spacing-xl);
}

nav a {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-dark);
  position: relative;
  padding: var(--spacing-sm) 0;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-electric-blue);
  transition: width var(--transition-fast);
}

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

nav a:hover,
nav a.active {
  color: var(--color-electric-blue);
  text-decoration: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  gap: var(--spacing-sm);
}

.menu-toggle span {
  width: 24px;
  height: 3px;
  background-color: var(--color-navy);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

@media (max-width: 768px) {
  nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--container-padding);
    border-bottom: 1px solid var(--color-neutral-medium);
  }

  nav.active {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-graphite) 100%);
  color: var(--color-white);
  padding: var(--spacing-4xl) var(--container-padding);
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease-out;
}

.hero p {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xl);
  opacity: 0.9;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  min-height: 44px;
}

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

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-light-blue);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-electric-blue);
  border-color: var(--color-electric-blue);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--color-electric-blue);
  color: var(--color-white);
}

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

.btn-dark:hover,
.btn-dark:focus {
  background-color: var(--color-graphite);
  box-shadow: var(--shadow-md);
}

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

.btn-accent:hover,
.btn-accent:focus {
  background-color: var(--color-accent-warm);
  box-shadow: var(--shadow-md);
}

/* Sections */
section {
  padding: var(--spacing-4xl) var(--container-padding);
}

section.light {
  background-color: var(--color-neutral-light);
}

section.dark {
  background-color: var(--color-navy);
  color: var(--color-white);
}

section.dark h2,
section.dark h3,
section.dark h4 {
  color: var(--color-white);
}

section.dark p,
section.dark a {
  color: var(--color-neutral-light);
}

section.dark a:hover {
  color: var(--color-light-blue);
}

/* Section Headers */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-3xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-md);
}

.section-header p {
  font-size: var(--font-size-lg);
  opacity: 0.8;
  margin-bottom: 0;
}

/* Cards */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid transparent;
}

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

.card h3 {
  margin-bottom: var(--spacing-md);
}

.card p {
  margin-bottom: var(--spacing-lg);
}

section.light .card {
  background-color: var(--color-white);
}

section.dark .card {
  background-color: var(--color-graphite);
  color: var(--color-white);
}

/* Metric Boxes */
.metric {
  text-align: center;
}

.metric-value {
  display: block;
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-electric-blue);
  margin-bottom: var(--spacing-sm);
}

.metric-label {
  display: block;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-dark);
}

section.dark .metric-label {
  color: var(--color-neutral-light);
}

/* Badges */
.badge {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-electric-blue);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-secondary {
  background-color: var(--color-safety-orange);
}

/* Forms */
form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-xl);
}

label {
  display: block;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-neutral-dark);
}

input,
textarea,
select {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-neutral-medium);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-electric-blue);
  box-shadow: 0 0 0 3px rgba(0, 153, 204, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

/* Footer */
footer {
  background-color: var(--color-navy);
  color: var(--color-neutral-light);
  padding: var(--spacing-3xl) var(--container-padding);
}

footer h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

footer a {
  color: var(--color-light-blue);
}

footer a:hover {
  color: var(--color-white);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

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

.footer-section li {
  margin-bottom: var(--spacing-sm);
}

.footer-divider {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
  font-size: var(--font-size-sm);
}

/* Breadcrumbs */
.breadcrumb {
  display: flex;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xl);
}

.breadcrumb a {
  color: var(--color-electric-blue);
}

.breadcrumb a:hover {
  color: var(--color-light-blue);
}

.breadcrumb span {
  color: var(--color-neutral-medium);
}

/* Page Title Section */
.page-header {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-graphite) 100%);
  color: var(--color-white);
  padding: var(--spacing-3xl) var(--container-padding);
  text-align: center;
}

.page-header h1 {
  margin-bottom: var(--spacing-md);
}

.page-header p {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: 0;
}

/* Avatar Placeholder */
.avatar {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-electric-blue), var(--color-light-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin: 0 auto var(--spacing-lg);
}

/* SVG Map Placeholder */
.map-placeholder {
  width: 100%;
  max-width: 600px;
  height: 400px;
  background-color: var(--color-neutral-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-neutral-medium);
  margin: var(--spacing-xl) auto;
}

/* Contact Info */
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

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

.contact-item h4 {
  margin-bottom: var(--spacing-sm);
}

.contact-item p {
  margin-bottom: 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

/* Demo Notice */
.demo-notice {
  background-color: #fff3cd;
  border-left: 4px solid var(--color-accent-warm);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-sm);
}

.demo-notice strong {
  color: var(--color-safety-orange);
}

/* Success Message */
.success-message {
  background-color: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-xl);
  display: none;
}

.success-message.show {
  display: block;
  animation: fadeInUp 0.3s ease-out;
}

/* Responsive Typography */
@media (max-width: 768px) {
  h1 {
    font-size: var(--font-size-3xl);
  }

  h2 {
    font-size: var(--font-size-2xl);
  }

  h3 {
    font-size: var(--font-size-xl);
  }

  .hero h1 {
    font-size: var(--font-size-3xl);
  }

  .hero p {
    font-size: var(--font-size-lg);
  }

  .metric-value {
    font-size: var(--font-size-3xl);
  }

  section {
    padding: var(--spacing-3xl) var(--container-padding);
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--spacing-2xl) var(--container-padding);
  }

  .hero h1 {
    font-size: var(--font-size-2xl);
  }

  .hero p {
    font-size: var(--font-size-base);
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .contact-info {
    grid-template-columns: 1fr;
  }
}

/* Print Styles */
@media print {
  header,
  footer,
  .menu-toggle,
  .btn {
    display: none;
  }

  body {
    background-color: var(--color-white);
  }
}

/* Utility Classes */
.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-xl); }
.mt-3 { margin-top: var(--spacing-2xl); }

.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-xl); }
.mb-3 { margin-bottom: var(--spacing-2xl); }

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

.text-muted { color: var(--color-neutral-medium); }
.text-light { color: var(--color-neutral-light); }

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