/* ===========================
   CSS Variables
   =========================== */
:root {
  /* Colors */
  --color-primary: #1e3a8a;
  --color-accent: #3b82f6;
  --color-dark: #0f172a;
  --color-bg-light: #f8fafc;
  --color-bg-white: #ffffff;
  --color-border: #e2e8f0;
  --color-text: #334155;
  --color-text-light: #64748b;
  --color-success: #10b981;
  --color-warning: #f59e0b;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  /* 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);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
}

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

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

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

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

code {
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  background-color: var(--color-border);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  color: var(--color-dark);
}

ul {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

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

/* ===========================
   Layout Components
   =========================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

section {
  padding: var(--spacing-2xl) 0;
}

/* ===========================
   Header / Hero Section
   =========================== */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: white;
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.hero h1 {
  color: white;
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-4xl);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  opacity: 0.95;
}

.hero-subtitle a {
  color: white;
  text-decoration: underline;
  font-weight: 600;
}

.hero-subtitle a:hover {
  opacity: 0.8;
}

/* ===========================
   Statistics Section
   =========================== */
.stats-section {
  background-color: var(--color-bg-white);
  padding: var(--spacing-xl) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

.stat-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

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

.stat-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* ===========================
   Map Section
   =========================== */
.map-section {
  background-color: var(--color-bg-light);
}

.map-section h2 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.map-container {
  height: 500px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  position: relative;
}

/* Map Consent Overlay */
.map-consent-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.95), rgba(59, 130, 246, 0.95));
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--spacing-md);
}

.consent-card {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  text-align: center;
}

.consent-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-xl);
}

.consent-card p {
  color: var(--color-text);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.consent-card a {
  color: var(--color-accent);
  text-decoration: underline;
}

.consent-card a:hover {
  color: var(--color-primary);
}

.consent-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

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

.btn-primary:hover {
  background-color: #1e40af;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: #6b7280;
  color: white;
}

.btn-secondary:hover {
  background-color: #4b5563;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Map Consent Declined Message */
.map-declined-message {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  background-color: var(--color-bg-light);
  color: var(--color-text-light);
  padding: var(--spacing-lg);
  text-align: center;
}

/* ===========================
   Network Information Section
   =========================== */
.network-info {
  background-color: var(--color-bg-white);
}

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

.info-card {
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
}

.info-card h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

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

.info-card ul {
  margin-left: var(--spacing-lg);
}

.info-card strong {
  color: var(--color-primary);
}

/* ===========================
   Peering Section
   =========================== */
.peering-section {
  background-color: var(--color-bg-light);
}

.peering-section h2 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.peeringdb-container {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.loading {
  text-align: center;
  color: var(--color-text-light);
  padding: var(--spacing-lg);
  font-style: italic;
}

.peeringdb-info {
  display: grid;
  gap: var(--spacing-md);
}

.peeringdb-badge {
  display: inline-block;
  background: var(--color-success);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.peeringdb-detail {
  margin-bottom: var(--spacing-sm);
}

.peeringdb-detail strong {
  color: var(--color-primary);
  margin-right: var(--spacing-xs);
}

.error-message {
  color: var(--color-warning);
  padding: var(--spacing-md);
  background: rgba(245, 158, 11, 0.1);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-warning);
}

/* ===========================
   Footer
   =========================== */
.footer {
  background-color: var(--color-dark);
  color: white;
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.footer p {
  margin-bottom: var(--spacing-sm);
  opacity: 0.9;
}

.footer a {
  color: var(--color-accent);
  margin: 0 var(--spacing-xs);
}

.footer a:hover {
  color: white;
}

/* ===========================
   Leaflet Customization
   =========================== */
.leaflet-popup-content-wrapper {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.leaflet-popup-content {
  margin: var(--spacing-sm);
  font-family: var(--font-family);
}

.popup-title {
  font-weight: 700;
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.popup-detail {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.popup-detail code {
  background: var(--color-border);
  padding: 0.125rem 0.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
}

/* ===========================
   Responsive Design
   =========================== */

/* Tablet */
@media (min-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .container {
    padding: 0 var(--spacing-lg);
  }

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

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

/* Desktop */
@media (min-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  section {
    padding: var(--spacing-2xl) 0;
  }

  .hero {
    padding: 4rem 0;
  }

  .map-container {
    height: 600px;
  }
}

/* Large Desktop */
@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
  }
}

/* ===========================
   Accessibility
   =========================== */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===========================
   Print Styles
   =========================== */
@media print {
  .map-container {
    height: 400px;
  }

  .stat-card {
    break-inside: avoid;
  }

  a {
    text-decoration: underline;
  }
}