/* ==========================================================================
   CDC ĐÀ NẴNG - BẢN ĐỒ DỊCH TỄ HỌC SỐ (DIGITAL EPIDEMIOLOGY MAP)
   Design System: Modern CDC Command Center (Dark & Light Mode)
   ========================================================================== */

:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.92);
  --border-color: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-orange: #f97316; /* Sốt xuất huyết */
  --accent-yellow: #eab308; /* Tay chân miệng */
  --accent-red: #ef4444;    /* Sởi / Nguy cơ cao */
  --accent-purple: #a855f7; /* Lao */
  --accent-green: #10b981;  /* An toàn / Khỏi */
  --accent-teal: #14b8a6;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --glass-blur: blur(12px);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   HEADER / TOP NAVBAR
   ========================================================================== */
.header-bar {
  height: 60px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #0ea5e9, #3b82f6);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  box-shadow: 0 0 12px rgba(14, 165, 233, 0.5);
}

.brand-text h1 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-text p {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.68rem;
  font-weight: 600;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.live-dot {
  width: 6px;
  height: 6px;
  background-color: #10b981;
  border-radius: 50%;
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-header {
  background: rgba(51, 65, 85, 0.7);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.btn-header:hover {
  background: #334155;
  border-color: var(--accent-blue);
  color: #ffffff;
}

.btn-simulate {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(249, 115, 22, 0.2));
  border: 1px solid rgba(239, 68, 68, 0.5);
  color: #fca5a5;
}

.btn-simulate:hover, .btn-simulate.active {
  background: linear-gradient(135deg, #ef4444, #f97316);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.4);
}

/* ==========================================================================
   APP CONTAINER & LAYOUT
   ========================================================================== */
.main-wrapper {
  flex: 1;
  display: flex;
  position: relative;
  overflow: hidden;
}

/* SIDEBAR DASHBOARD */
.sidebar {
  width: 400px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 990;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.sidebar.collapsed {
  transform: translateX(-100%);
  position: absolute;
  height: 100%;
}

.sidebar-toggle-btn {
  position: absolute;
  left: 400px;
  top: 15px;
  z-index: 995;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: none;
  border-radius: 0 6px 6px 0;
  color: var(--text-muted);
  width: 28px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1), background 0.2s;
  box-shadow: var(--shadow-md);
}

.sidebar.collapsed + .sidebar-toggle-btn {
  left: 0;
}

.sidebar-toggle-btn:hover {
  background: #334155;
  color: #fff;
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

/* Scrollbar */
.sidebar-content::-webkit-scrollbar {
  width: 5px;
}
.sidebar-content::-webkit-scrollbar-track {
  background: transparent;
}
.sidebar-content::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

/* ==========================================================================
   KPI SUMMARY CARDS
   ========================================================================== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
}

.kpi-card.kpi-total::before { background: var(--accent-blue); }
.kpi-card.kpi-sxh::before { background: var(--accent-orange); }
.kpi-card.kpi-tcm::before { background: var(--accent-yellow); }
.kpi-card.kpi-alert::before { background: var(--accent-red); }

.kpi-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
}

.kpi-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.1;
}

.kpi-sub {
  font-size: 0.68rem;
  color: var(--text-dim);
}

/* ==========================================================================
   FILTER PANELS
   ========================================================================== */
.section-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.section-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(51, 65, 85, 0.5);
  padding-bottom: 0.45rem;
}

.section-title i {
  color: var(--accent-cyan);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-select, .form-input {
  background: #0f172a;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.45rem 0.65rem;
  border-radius: 6px;
  font-size: 0.78rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-select:focus, .form-input:focus {
  border-color: var(--accent-blue);
}

/* Quick Filter Badges for Diseases */
.disease-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.disease-pill {
  font-size: 0.7rem;
  padding: 0.25rem 0.55rem;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.6);
  color: var(--text-muted);
  transition: all 0.15s;
  user-select: none;
}

.disease-pill:hover {
  background: #334155;
  color: #fff;
}

.disease-pill.active {
  color: #fff;
  font-weight: 600;
}

.disease-pill[data-val="ALL"].active { background: #3b82f6; border-color: #3b82f6; }
.disease-pill[data-val="SXH"].active { background: #f97316; border-color: #f97316; }
.disease-pill[data-val="TCM"].active { background: #eab308; border-color: #eab308; color: #000; }
.disease-pill[data-val="CUM"].active { background: #06b6d4; border-color: #06b6d4; }
.disease-pill[data-val="LAO"].active { background: #a855f7; border-color: #a855f7; }
.disease-pill[data-val="SOI"].active { background: #ef4444; border-color: #ef4444; }
.disease-pill[data-val="SOT_RET"].active { background: #842029; border-color: #842029; }

/* ==========================================================================
   CHARTS IN SIDEBAR
   ========================================================================== */
.chart-container {
  height: 160px;
  position: relative;
  width: 100%;
}

/* ==========================================================================
   MAP CONTAINER & OVERLAYS
   ========================================================================== */
.map-container {
  flex: 1;
  height: 100%;
  position: relative;
  background-color: #0b1120;
}

#map {
  width: 100%;
  height: 100%;
  z-index: 10;
}

/* MAP OVERLAY: SIMULATION FLOATING NOTIFICATION */
.sim-alert-banner {
  position: absolute;
  top: 15px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--accent-orange);
  border-radius: 8px;
  padding: 0.65rem 1.25rem;
  z-index: 998;
  display: none;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 0 0 20px rgba(249, 115, 22, 0.4);
  animation: slideDown 0.3s ease;
}

.sim-alert-banner.active {
  display: flex;
}

.sim-alert-banner.danger {
  border-color: var(--accent-red);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.5);
}

@keyframes slideDown {
  from { top: -50px; opacity: 0; }
  to { top: 15px; opacity: 1; }
}

/* MAP OVERLAY: 7-LAYER CONTROL DRAWER (TOP-RIGHT) */
.layer-card-control {
  position: absolute;
  top: 15px;
  right: 15px;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem 0.95rem;
  z-index: 995;
  width: 250px;
  box-shadow: var(--shadow-lg);
}

.layer-control-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid rgba(51, 65, 85, 0.6);
}

.layer-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.3rem 0;
  font-size: 0.74rem;
  color: var(--text-main);
  cursor: pointer;
}

.layer-item:hover {
  color: var(--accent-cyan);
}

.layer-item input[type="checkbox"] {
  cursor: pointer;
  accent-color: var(--accent-cyan);
}

.layer-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 0.4rem;
}

/* ==========================================================================
   TIME SLIDER CONTROL (BOTTOM DOCK)
   ========================================================================== */
.time-dock {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.65rem 1.25rem;
  z-index: 995;
  width: min(650px, 90%);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  box-shadow: var(--shadow-lg);
}

.time-dock-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
}

.time-title {
  color: var(--text-muted);
  font-weight: 500;
}

.time-value {
  color: var(--accent-cyan);
  font-weight: 700;
  font-size: 0.85rem;
}

.time-controls {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.btn-play {
  background: var(--accent-blue);
  color: #fff;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.15s, background 0.15s;
  flex-shrink: 0;
}

.btn-play:hover {
  background: #2563eb;
  transform: scale(1.05);
}

.time-slider-range {
  flex: 1;
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

/* ==========================================================================
   LEGEND (BOTTOM-LEFT OF MAP)
   ========================================================================== */
.map-legend {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
  z-index: 995;
  font-size: 0.72rem;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.legend-title {
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.15rem;
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-muted);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.legend-circle {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px dashed rgba(249, 115, 22, 0.8);
  background: rgba(249, 115, 22, 0.2);
}

/* ==========================================================================
   CUSTOM LEAFLET POPUP STYLING
   ========================================================================== */
.leaflet-popup-content-wrapper {
  background: #1e293b !important;
  color: #f8fafc !important;
  border: 1px solid #475569 !important;
  border-radius: 8px !important;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5) !important;
  padding: 0 !important;
  overflow: hidden;
}

.leaflet-popup-content {
  margin: 0 !important;
  line-height: 1.4 !important;
}

.leaflet-popup-tip {
  background: #1e293b !important;
}

.case-popup {
  padding: 0.85rem;
  min-width: 260px;
}

.case-popup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid #334155;
}

.case-popup-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: #ffffff;
}

.badge-disease {
  font-size: 0.65rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-weight: 600;
}

.badge-sxh { background: rgba(249, 115, 22, 0.2); color: #fb923c; border: 1px solid rgba(249, 115, 22, 0.4); }
.badge-tcm { background: rgba(234, 179, 8, 0.2); color: #fde047; border: 1px solid rgba(234, 179, 8, 0.4); }
.badge-cum { background: rgba(6, 182, 212, 0.2); color: #67e8f9; border: 1px solid rgba(6, 182, 212, 0.4); }
.badge-lao { background: rgba(168, 85, 247, 0.2); color: #d8b4fe; border: 1px solid rgba(168, 85, 247, 0.4); }
.badge-soi { background: rgba(239, 68, 68, 0.2); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.4); }

.case-popup-body {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.74rem;
  color: #cbd5e1;
}

.case-popup-row {
  display: flex;
  justify-content: space-between;
}

.case-popup-label {
  color: #94a3b8;
}

.case-popup-val {
  font-weight: 500;
  color: #ffffff;
}

/* ==========================================================================
   MODAL UPLOAD / SIMULATION POPUP
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: var(--glass-blur);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: min(500px, 92%);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  animation: modalScale 0.2s ease;
}

@keyframes modalScale {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 0.98rem;
  font-weight: 600;
  color: #ffffff;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
}

.modal-close:hover {
  color: #fff;
}

.modal-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.modal-footer {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.5);
  display: flex;
  justify-content: flex-end;
  gap: 0.65rem;
}

.btn-primary {
  background: var(--accent-blue);
  color: #fff;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
}

.btn-primary:hover {
  background: #2563eb;
}

.btn-secondary {
  background: #334155;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.82rem;
  cursor: pointer;
}

.btn-secondary:hover {
  background: #475569;
}

/* Upload Dropzone */
.dropzone {
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.05);
}

.dropzone i {
  font-size: 2.2rem;
  color: var(--accent-cyan);
  margin-bottom: 0.65rem;
}

.dropzone p {
  font-size: 0.82rem;
  color: var(--text-muted);
}