/* ============================================================
   SEWER PIPELINE MONITORING — STYLES
   Clean, professional, minimalistic design
   Color theme: Teal (primary), Orange (secondary), White bg
   ============================================================ */

/* ─── CSS Variables ──────────────────────────────────────── */
:root {
  --color-primary:       #0d9488;
  --color-primary-lt:    #14b8a6;
  --color-primary-dk:    #0f766e;
  --color-primary-pale:  #f0fdfa;
  --color-secondary:     #f97316;
  --color-secondary-lt:  #fb923c;
  --color-secondary-dk:  #ea580c;
  --color-secondary-pale:#fff7ed;

  --color-success:       #10b981;
  --color-warning:       #f59e0b;
  --color-danger:        #ef4444;
  --color-neutral:       #64748b;

  --color-bg:            #ffffff;
  --color-surface:       #f8fafc;
  --color-surface-2:     #f1f5f9;
  --color-border:        #e2e8f0;
  --color-text:          #0f172a;
  --color-text-muted:    #64748b;
  --color-text-light:    #94a3b8;

  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:   0 4px 8px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.05);
  --shadow-lg:   0 10px 20px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.04);

  --radius:      12px;
  --radius-sm:   8px;
  --radius-xs:   4px;

  --font:        'Segoe UI', system-ui, -apple-system, sans-serif;
  --transition:  0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

a { text-decoration: none; color: inherit; }

/* ─── Layout Helpers ────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.hidden { display: none !important; }

/* ─── Header ────────────────────────────────────────────── */
.site-header {
  position: relative;
  background: linear-gradient(135deg, #0f2027 0%, #0d4f47 50%, #0f766e 100%);
  background-image:
    linear-gradient(135deg, rgba(15,32,39,0.92) 0%, rgba(13,79,71,0.88) 50%, rgba(15,118,110,0.85) 100%),
    url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?w=1920&q=70');
  background-size: cover;
  background-position: center;
  padding: 0;
  z-index: 100;
  border-bottom: 2px solid var(--color-primary-dk);
}

.header-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(13,79,71,0.3), transparent);
  pointer-events: none;
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 20px;
  padding-bottom: 20px;
  flex-wrap: wrap;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(20, 184, 166, 0.25);
  border: 1px solid rgba(20, 184, 166, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #5eead4;
  flex-shrink: 0;
}

.brand-title {
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.3px;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 12px;
  color: #99f6e4;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

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

.status-chip {
  display: flex;
  align-items: center;
  gap: 7px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 20px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  color: #e2f8f5;
  backdrop-filter: blur(4px);
}

.status-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #94a3b8;
  flex-shrink: 0;
  transition: background var(--transition);
}

.status-chip.connected .status-pulse {
  background: #34d399;
  animation: pulse-glow 2s infinite;
}

.status-chip.error .status-pulse {
  background: #f87171;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5); }
  50%       { box-shadow: 0 0 0 5px rgba(52, 211, 153, 0); }
}

.demo-badge {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--color-secondary);
  color: #fff;
  border-radius: 20px;
  padding: 5px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.header-clock {
  font-size: 18px;
  font-weight: 700;
  color: #5eead4;
  font-variant-numeric: tabular-nums;
  letter-spacing: 1px;
}

/* ─── Alert Section ─────────────────────────────────────── */
.alerts-section {
  background: #fffbeb;
  border-bottom: 2px solid #fde68a;
  padding: 14px 0;
}

.alerts-section.has-critical {
  background: #fef2f2;
  border-bottom-color: #fecaca;
}

.alerts-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 13px;
  color: var(--color-text);
  margin-bottom: 10px;
}

.alerts-header .ti { font-size: 16px; color: var(--color-warning); }

.alerts-section.has-critical .alerts-header .ti { color: var(--color-danger); }

.alerts-count {
  background: var(--color-warning);
  color: #fff;
  border-radius: 10px;
  padding: 1px 7px;
  font-size: 11px;
  font-weight: 700;
  margin-left: auto;
}

.alerts-section.has-critical .alerts-count { background: var(--color-danger); }

.alerts-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.alert-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: #fff;
  border: 1px solid #fde68a;
  border-left: 4px solid var(--color-warning);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
}

.alert-item.critical {
  border-color: #fecaca;
  border-left-color: var(--color-danger);
}

.alert-badge {
  background: var(--color-warning);
  color: #fff;
  border-radius: var(--radius-xs);
  padding: 2px 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
  flex-shrink: 0;
}

.alert-item.critical .alert-badge { background: var(--color-danger); }

.alert-message {
  color: var(--color-text);
  flex: 1;
}

.alert-message strong { font-weight: 600; }

/* ─── Main Content ──────────────────────────────────────── */
.main-content {
  padding: 28px 0 48px;
}

.section {
  margin-bottom: 36px;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.section-label .ti { font-size: 16px; color: var(--color-primary); }

/* ─── Card Base ─────────────────────────────────────────── */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

/* ─── Metric Cards ──────────────────────────────────────── */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.metric-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--color-border);
  transition: background var(--transition);
}

.metric-card.status-normal::before  { background: var(--color-success); }
.metric-card.status-warning::before { background: var(--color-warning); }
.metric-card.status-critical::before{ background: var(--color-danger);  }

.metric-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.metric-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.metric-icon-wrap.teal   { background: var(--color-primary-pale); color: var(--color-primary); }
.metric-icon-wrap.orange { background: var(--color-secondary-pale); color: var(--color-secondary); }

.metric-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.metric-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.metric-value-row {
  display: flex;
  align-items: baseline;
  gap: 3px;
}

.metric-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.metric-unit {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
}

.metric-status-badge {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--color-surface-2);
  width: fit-content;
}

.metric-status-badge.status-normal   { background: #d1fae5; color: #065f46; }
.metric-status-badge.status-warning  { background: #fef3c7; color: #92400e; }
.metric-status-badge.status-critical { background: #fee2e2; color: #991b1b; }

/* ─── Live Chip ──────────────────────────────────────────── */
.live-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #d1fae5;
  color: #065f46;
  border-radius: 12px;
  padding: 2px 10px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-left: 8px;
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse-glow 2s infinite;
}

/* ─── Charts ─────────────────────────────────────────────── */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.chart-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

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

.chart-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.chart-unit {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
}

.chart-wrapper {
  position: relative;
  height: 240px;
}

.chart-legend {
  display: flex;
  gap: 16px;
  margin-top: 12px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.teal-bg   { background: var(--color-primary); }
.orange-bg { background: var(--color-secondary); }

/* ─── Manhole Cards ─────────────────────────────────────── */
.manholes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.manhole-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.manhole-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.manhole-number-badge {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}

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

.manhole-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.manhole-card-subtitle {
  font-size: 11px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.manhole-card-status {
  margin-left: auto;
}

.manhole-info-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.info-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text);
}

.info-row .ti {
  font-size: 15px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ─── Gauge / Progress ───────────────────────────────────── */
.manhole-gauge {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.gauge-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-text-muted);
  font-weight: 600;
}

.gauge-value {
  font-weight: 700;
  color: var(--color-text);
}

.progress-track {
  height: 8px;
  border-radius: 4px;
  background: var(--color-surface-2);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  border-radius: 4px;
  background: var(--color-primary);
  transition: width 0.5s ease, background 0.3s ease;
}

.progress-bar.warning  { background: var(--color-warning); }
.progress-bar.critical { background: var(--color-danger); }
.orange-bar            { background: var(--color-secondary); }

.flow-indicator {
  height: 8px;
  border-radius: 4px;
  background: var(--color-surface-2);
  overflow: hidden;
}

.flow-bar {
  height: 100%;
  border-radius: 4px;
  background: var(--color-primary);
  transition: width 0.5s ease;
}

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

/* ─── History Controls ───────────────────────────────────── */
.history-controls {
  padding: 20px;
  margin-bottom: 20px;
}

.controls-row {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
  min-width: 180px;
}

.form-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
}

.form-input {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 13px;
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(13,148,136,0.1);
}

.controls-actions {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.history-status {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  border: none;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn .ti { font-size: 15px; }

.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--color-primary-dk); }

.btn-secondary {
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover { background: var(--color-border); }

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ─── Text helpers ───────────────────────────────────────── */
.text-muted { color: var(--color-text-muted); font-size: 12px; }

/* ─── Footer ─────────────────────────────────────────────── */
.site-footer {
  background: var(--color-text);
  color: #94a3b8;
  padding: 18px 0;
  font-size: 12px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* ─── Map Page ───────────────────────────────────────────── */
.map-page { background: var(--color-surface); }

.map-page-header {
  background: var(--color-primary-dk);
  padding: 14px 0;
  border-bottom: 2px solid var(--color-primary);
}

.map-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.back-link {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #99f6e4;
  font-size: 13px;
  font-weight: 600;
  transition: color var(--transition);
}

.back-link:hover { color: #fff; }

.map-page-title {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
}

.map-main {
  padding: 28px 0 48px;
}

.map-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 20px;
  align-items: start;
}

.map-sidebar {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.map-sidebar-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.map-sidebar-header h2 {
  font-size: 18px;
  font-weight: 700;
}

.sidebar-detail-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.detail-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.detail-row .ti {
  font-size: 16px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.detail-label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-muted);
}

.detail-value {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.map-container-wrap {
  position: relative;
  overflow: hidden;
  padding: 0;
}

.leaflet-map {
  height: 520px;
  width: 100%;
  border-radius: var(--radius);
}

.map-loading {
  position: absolute;
  inset: 0;
  background: var(--color-surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--color-text-muted);
  font-size: 16px;
  border-radius: var(--radius);
  z-index: 10;
}

.map-loading .ti { font-size: 32px; color: var(--color-primary); }

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 1100px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .charts-grid, .manholes-grid {
    grid-template-columns: 1fr;
  }
  .map-layout {
    grid-template-columns: 1fr;
  }
  .leaflet-map { height: 360px; }
}

@media (max-width: 640px) {
  .metrics-grid { grid-template-columns: 1fr; }
  .brand-title  { font-size: 17px; }
  .header-clock { display: none; }
  .controls-row { flex-direction: column; }
  .controls-actions { flex-wrap: wrap; }
  .container { padding: 0 16px; }
}

@media (max-width: 480px) {
  .metric-value { font-size: 22px; }
}