/* ═══════════════════════════════════════════════════════
   GIMAT — Design System
   Gidrologik Intellektual Monitoring va Axborot Tizimi
   Colors from TZ Section 6.2
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ─── CSS Variables ─── */
:root {
  /* Primary palette */
  --primary: #1B4F8A;
  --primary-light: #2563EB;
  --primary-dark: #153d6b;
  --primary-glow: rgba(27, 79, 138, 0.3);

  /* Status colors */
  --success: #22C55E;
  --success-bg: rgba(34, 197, 94, 0.12);
  --warning: #F59E0B;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --danger: #EF4444;
  --danger-bg: rgba(239, 68, 68, 0.12);

  /* Neutral palette */
  --bg-primary: #0B1120;
  --bg-secondary: #111827;
  --bg-card: #1A2332;
  --bg-card-hover: #1F2A3C;
  --bg-surface: #0F1923;
  --bg-glass: rgba(26, 35, 50, 0.85);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Text */
  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-accent: #60A5FA;

  /* Dimensions */
  --sidebar-width: 260px;
  --header-height: 64px;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--primary-glow);

  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Reset ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ─── Layout ─── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding-top: var(--header-height);
  min-height: 100vh;
  transition: var(--transition);
}

.page-content {
  padding: 24px 32px;
  max-width: 1600px;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Sidebar ─── */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  overflow-y: auto;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.sidebar-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-glow);
}

.sidebar-logo h1 {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, #60A5FA, #818CF8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 1px;
}

.sidebar-logo .version {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 400;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
}

.nav-section {
  margin-bottom: 24px;
}

.nav-section-title {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 0 12px;
  margin-bottom: 8px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.nav-link.active {
  background: rgba(37, 99, 235, 0.15);
  color: var(--primary-light);
}

.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--primary-light);
  border-radius: 0 3px 3px 0;
}

.nav-link .icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.nav-link .badge {
  margin-left: auto;
  background: var(--danger);
  color: white;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}

/* ─── Header ─── */
.header {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  transition: var(--transition);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-left h2 {
  font-size: 18px;
  font-weight: 600;
}

.header-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.header-breadcrumb span { color: var(--text-secondary); }

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.header-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.lang-select {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  outline: none;
}

.lang-select option {
  background: var(--bg-card);
  color: var(--text-primary);
}

/* ─── Cards ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

/* ─── KPI Cards ─── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--kpi-color, var(--primary-light));
}

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

.kpi-card .kpi-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 12px;
}

.kpi-card .kpi-value {
  font-size: 28px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
  line-height: 1.2;
}

.kpi-card .kpi-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-card .kpi-change {
  font-size: 12px;
  font-weight: 500;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.kpi-change.up { color: var(--success); }
.kpi-change.down { color: var(--danger); }

/* ─── Charts ─── */
.chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}

.chart-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.chart-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.chart-btn:hover {
  background: rgba(255, 255, 255, 0.05);
}

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

/* ─── Grid layouts ─── */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-full {
  grid-column: 1 / -1;
}

/* ─── Tables ─── */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
}

.data-table thead th {
  background: var(--bg-surface);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.5px;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
}

.data-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* ─── Status Badges ─── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-normal {
  background: var(--success-bg);
  color: var(--success);
}

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

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger);
}

.badge-active {
  background: rgba(37, 99, 235, 0.15);
  color: var(--primary-light);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.btn-success {
  background: linear-gradient(135deg, #16a34a, var(--success));
  color: white;
}

.btn-danger {
  background: linear-gradient(135deg, #dc2626, var(--danger));
  color: white;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 12px;
}

/* ─── Forms ─── */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input, .form-select {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.form-input:focus, .form-select:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-input::placeholder {
  color: var(--text-muted);
}

/* ─── Map ─── */
.map-container {
  height: calc(100vh - var(--header-height) - 48px);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  position: relative;
}

.map-overlay {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.map-legend {
  position: absolute;
  bottom: 24px;
  left: 16px;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
}

.map-legend h4 {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

/* ─── Alert Cards ─── */
.alert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.alert-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
}

.alert-card.danger::before { background: var(--danger); }
.alert-card.warning::before { background: var(--warning); }
.alert-card.normal::before { background: var(--success); }

.alert-card:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
}

/* ─── Auth Pages ─── */
.auth-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg-primary);
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}

.auth-card .logo-section {
  text-align: center;
  margin-bottom: 32px;
}

.auth-card .logo-section .logo-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-glow);
}

.auth-card h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.auth-card .subtitle {
  font-size: 14px;
  color: var(--text-muted);
}

/* ─── Loading ─── */
.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary-light);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 20px auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ─── Leaflet overrides ─── */
.leaflet-container {
  background: var(--bg-primary) !important;
  font-family: 'Inter' !important;
}

.leaflet-popup-content-wrapper {
  background: var(--bg-card) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-sm) !important;
  box-shadow: var(--shadow-lg) !important;
}

.leaflet-popup-tip {
  background: var(--bg-card) !important;
  border: 1px solid var(--border) !important;
}

.leaflet-popup-content {
  margin: 12px 16px !important;
  font-size: 13px !important;
  line-height: 1.5 !important;
}

.leaflet-control-zoom a {
  background: var(--bg-card) !important;
  color: var(--text-primary) !important;
  border-color: var(--border) !important;
}

.leaflet-control-zoom a:hover {
  background: var(--bg-card-hover) !important;
}

/* ─── Plotly overrides ─── */
.js-plotly-plot .plotly .modebar-btn {
  color: var(--text-muted) !important;
}

/* ─── Responsive (Mobile-First approach overrides) ─── */
@media (max-width: 1024px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Bottom Navigation HTML block appended by app.js */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 65px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  z-index: 1000;
  justify-content: space-around;
  align-items: center;
  padding: 0 10px;
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 10px;
  font-weight: 500;
  gap: 4px;
  transition: var(--transition);
  padding: 6px;
  border-radius: 8px;
  width: 20%;
}

.bottom-nav-item .icon {
  font-size: 20px;
}

.bottom-nav-item.active {
  color: var(--primary-light);
}

.bottom-nav-item.active .icon {
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    display: none; /* Let bottom nav handle mobile */
  }

  .main-content {
    margin-left: 0;
    padding-bottom: 80px; /* Space for bottom nav */
  }

  .header {
    left: 0;
    padding: 0 16px;
  }
  
  .header-left h2 {
    font-size: 16px;
  }
  
  .header-breadcrumb {
    display: none; /* Hide breadcrumb on mobile for space */
  }

  .page-content {
    padding: 16px 12px;
  }

  .kpi-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  
  .bottom-nav {
    display: flex;
  }
  
  /* Make Data Tables horizontally scrollable nicely */
  .data-table {
    font-size: 11px;
  }
  
  .data-table th, .data-table td {
    padding: 8px 10px;
  }
}

@media (max-width: 480px) {
  .kpi-grid {
    grid-template-columns: 1fr !important;
  }
  
  .auth-card {
    padding: 32px 24px;
    border: none;
    box-shadow: none;
    background: transparent;
  }
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ─── Utility ─── */
.text-mono { font-family: 'JetBrains Mono', monospace; }
.text-xs { font-size: 11px; }
.text-sm { font-size: 13px; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mt-16 { margin-top: 16px; }
.w-full { width: 100%; }
.hidden { display: none !important; }