/* ==========================================================================
   IP Aqua Tech – Solar-Powered Drinking Water Filtration Monitoring System
   Theme: Aqua Blue · White · Dark Blue · Status Green/Yellow/Red
   ========================================================================== */

:root {
  --aqua-primary: #0a4d68;
  --aqua-secondary: #088395;
  --aqua-accent: #05bfdb;
  --aqua-light: #00ffca;
  --aqua-bg: #f0f9fb;
  --aqua-sidebar: #06283d;
  --aqua-sidebar-hover: #0a4d68;
  --aqua-card: #ffffff;
  --status-normal: #198754;
  --status-warning: #ffc107;
  --status-critical: #dc3545;
  --status-info: #0dcaf0;
  --text-dark: #1a1a2e;
  --text-muted: #6c757d;
  --border-color: #d0e8ef;
  --sidebar-width: 260px;
  --topbar-height: 60px;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(10, 77, 104, 0.08);
  --shadow-lg: 0 8px 30px rgba(10, 77, 104, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--aqua-bg);
  color: var(--text-dark);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---------- Sidebar ---------- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: linear-gradient(180deg, var(--aqua-sidebar) 0%, #0a4d68 100%);
  color: #fff;
  z-index: 1040;
  transition: transform 0.3s ease, width 0.3s ease;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar-brand .brand-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--aqua-accent), var(--aqua-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--aqua-sidebar);
}

.sidebar-brand h5 {
  margin: 0;
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.2;
}

.sidebar-brand small {
  font-size: 0.7rem;
  opacity: 0.7;
  display: block;
}

.sidebar-nav {
  padding: 1rem 0.75rem;
  flex: 1;
}

.sidebar-nav .nav-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.5;
  padding: 0.75rem 1rem 0.35rem;
  font-weight: 600;
}

.sidebar-nav .nav-link {
  color: rgba(255, 255, 255, 0.8);
  padding: 0.65rem 1rem;
  border-radius: 8px;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  text-decoration: none;
}

.sidebar-nav .nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.sidebar-nav .nav-link.active {
  background: linear-gradient(90deg, var(--aqua-secondary), var(--aqua-accent));
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(5, 191, 219, 0.3);
}

.sidebar-nav .nav-link i {
  width: 20px;
  text-align: center;
  font-size: 1rem;
}

.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.75rem;
  opacity: 0.6;
}

/* ---------- Main content ---------- */
.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  transition: margin-left 0.3s ease;
}

.topbar {
  height: var(--topbar-height);
  background: var(--aqua-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 1030;
  box-shadow: var(--shadow);
}

.topbar .page-title {
  font-weight: 700;
  color: var(--aqua-primary);
  font-size: 1.15rem;
  margin: 0;
}

.content-area {
  padding: 1.5rem 1.75rem 2.5rem;
  max-width: 1280px;
}

@media (max-width: 991.98px) {
  .content-area { padding: 1.1rem 1rem 2rem; }
}

/* ---------- Section titles ---------- */
.section-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--aqua-primary);
  margin: 0.25rem 0 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.section-title i {
  color: var(--aqua-secondary);
  font-size: 0.9rem;
}

.section-title .section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-color), transparent);
}

/* ---------- KPI / stat cards ---------- */
.stat-card {
  background: var(--aqua-card);
  border-radius: 14px;
  padding: 1.15rem 1.2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  height: 100%;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  position: relative;
  overflow: hidden;
  min-width: 0;
}

.stat-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--aqua-accent), var(--aqua-primary));
  opacity: 0.85;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stat-card .stat-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: #fff;
  flex-shrink: 0;
}

.stat-card .stat-icon.bg-aqua { background: linear-gradient(135deg, var(--aqua-primary), var(--aqua-accent)); }
.stat-card .stat-icon.bg-green { background: linear-gradient(135deg, #198754, #20c997); }
.stat-card .stat-icon.bg-yellow { background: linear-gradient(135deg, #e0a800, #ffc107); color: #333; }
.stat-card .stat-icon.bg-red { background: linear-gradient(135deg, #bb2d3b, #dc3545); }
.stat-card .stat-icon.bg-purple { background: linear-gradient(135deg, #6f42c1, #a855f7); }
.stat-card .stat-icon.bg-orange { background: linear-gradient(135deg, #fd7e14, #ffc107); }
.stat-card .stat-icon.bg-blue { background: linear-gradient(135deg, #0d6efd, #0dcaf0); }

.stat-card .stat-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--aqua-primary);
  line-height: 1.25;
  word-break: break-word;
}

.stat-card .stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.2rem;
}

.stat-card .stat-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.stat-card .stat-badge {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
}

.stat-card.stat-center {
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 1.25rem 0.9rem;
}

.stat-card.stat-center::before { display: none; }

.stat-card.stat-center .stat-value {
  font-size: 1.55rem;
  margin-top: 0.15rem;
}

/* Metric grid tiles — same family as cards, softer */
.metric-tile {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem 0.75rem;
  text-align: center;
  height: 100%;
  min-width: 0;
  box-shadow: 0 1px 4px rgba(10, 77, 104, 0.04);
}

.metric-tile .metric-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
}

.metric-tile .metric-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--aqua-primary);
  line-height: 1.15;
}

.metric-tile .metric-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* ---------- Aqua cards ---------- */
.card-aqua {
  background: var(--aqua-card);
  border-radius: 14px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-aqua .card-header {
  background: #fafcfd;
  border-bottom: 1px solid var(--border-color);
  padding: 0.95rem 1.25rem;
  font-weight: 650;
  color: var(--aqua-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.card-aqua .card-header.header-primary,
.card-aqua .card-header.header-info,
.card-aqua .card-header.header-success {
  background: #fafcfd;
  color: var(--aqua-primary);
  border-bottom: 1px solid var(--border-color);
}

.card-aqua .card-body {
  padding: 1.25rem 1.35rem;
}

.panel-soft {
  background: linear-gradient(180deg, #f7fbfd 0%, #f0f7fa 100%);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.15rem 1.25rem;
}

/* ---------- Weather block ---------- */
.weather-layout {
  display: grid;
  grid-template-columns: minmax(240px, 280px) 1fr;
  gap: 1rem;
  align-items: stretch;
}

@media (max-width: 991.98px) {
  .weather-layout {
    grid-template-columns: 1fr;
  }
}

.weather-now {
  background: linear-gradient(160deg, #0a4d68 0%, #0a6a85 48%, #088395 100%);
  border-radius: 14px;
  color: #fff;
  padding: 1.35rem 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100%;
  position: relative;
  overflow: hidden;
}

.weather-now::after {
  content: '';
  position: absolute;
  right: -20px;
  bottom: -20px;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.weather-now .now-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.8;
  margin-bottom: 0.75rem;
}

.weather-now .now-main {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.weather-now .now-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.16);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.weather-now .now-temp {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.weather-now .now-loc {
  font-size: 0.9rem;
  font-weight: 600;
  margin-top: 0.85rem;
  opacity: 0.95;
}

.weather-now .now-status {
  font-size: 0.8rem;
  opacity: 0.82;
  margin-top: 0.25rem;
}

.weather-now .now-foot {
  margin-top: 1.1rem;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.72rem;
  opacity: 0.75;
}

.weather-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  height: 100%;
}

@media (max-width: 575.98px) {
  .weather-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}

.weather-metric {
  background: #f7fbfd;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.95rem 0.85rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 92px;
}

.weather-metric .wm-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: #e8f6f9;
  color: var(--aqua-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  margin-bottom: 0.55rem;
}

.weather-metric .wm-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.weather-metric .wm-value {
  font-size: 1.2rem;
  font-weight: 750;
  color: var(--aqua-primary);
  line-height: 1.2;
}

.weather-metric .wm-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.weather-metric.is-rain .wm-value {
  color: #0a6a9b;
}

.weather-metric.is-ok .wm-value {
  color: #198754;
}

/* ---------- Predict page ---------- */
.action-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding: 1rem 1.15rem;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.predict-target-box {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  background: linear-gradient(135deg, #f0f9fb, #e8f6f9);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.7rem 1.1rem;
}

.predict-target-box .label {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 0.1rem;
}

.predict-target-box .value {
  font-weight: 700;
  color: var(--aqua-primary);
  font-size: 1.05rem;
  line-height: 1.2;
}

.card-aqua .table {
  margin-bottom: 0;
}

.card-aqua .table thead th {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  font-weight: 700;
  border-bottom-width: 1px;
  white-space: nowrap;
  background: #fafcfd;
  padding: 0.75rem 1rem;
}

.card-aqua .table td {
  vertical-align: middle;
  font-size: 0.9rem;
  padding: 0.8rem 1rem;
}

.prob-row {
  display: grid;
  grid-template-columns: 5.25rem 1fr 2.75rem;
  gap: 0.55rem;
  align-items: center;
  margin-bottom: 0.45rem;
}

.prob-row .progress {
  height: 0.5rem;
  background: #e8f4f8;
  border-radius: 999px;
}

.prob-row .progress-bar {
  border-radius: 999px;
}

.ml-info-card {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.1rem;
  height: 100%;
  background: linear-gradient(180deg, #fff 0%, #fafcfd 100%);
}

.ml-info-card h6 {
  font-weight: 700;
  color: var(--aqua-primary);
  margin-bottom: 0.35rem;
  font-size: 0.95rem;
}

/* Status banner soft edges */
.alert-aqua {
  border-radius: 12px !important;
}

/* Buttons in aqua UI */
.btn-primary {
  background: var(--aqua-primary);
  border-color: var(--aqua-primary);
}

.btn-primary:hover {
  background: var(--aqua-secondary);
  border-color: var(--aqua-secondary);
}

/* ---------- Status badges ---------- */
.badge-normal, .badge-status-normal {
  background-color: var(--status-normal) !important;
  color: #fff !important;
}
.badge-warning, .badge-status-warning {
  background-color: var(--status-warning) !important;
  color: #333 !important;
}
.badge-critical, .badge-status-critical {
  background-color: var(--status-critical) !important;
  color: #fff !important;
}
.badge-info-status {
  background-color: var(--status-info) !important;
  color: #033 !important;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 6px;
}
.status-dot.normal { background: var(--status-normal); box-shadow: 0 0 6px var(--status-normal); }
.status-dot.warning { background: var(--status-warning); box-shadow: 0 0 6px var(--status-warning); }
.status-dot.critical { background: var(--status-critical); box-shadow: 0 0 6px var(--status-critical); }

/* ---------- Tables ---------- */
.table-aqua {
  margin-bottom: 0;
}
.table-aqua thead th {
  background: var(--aqua-primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  border: none;
  padding: 0.75rem 1rem;
  white-space: nowrap;
}
.table-aqua tbody td {
  padding: 0.75rem 1rem;
  vertical-align: middle;
  font-size: 0.9rem;
  border-color: var(--border-color);
}
.table-aqua tbody tr:hover {
  background: rgba(5, 191, 219, 0.06);
}
.table-aqua tbody tr.row-warning {
  background: rgba(255, 193, 7, 0.12);
}
.table-aqua tbody tr.row-critical {
  background: rgba(220, 53, 69, 0.1);
}

/* ---------- Buttons ---------- */
.btn-aqua {
  background: linear-gradient(135deg, var(--aqua-primary), var(--aqua-secondary));
  color: #fff;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  transition: all 0.2s ease;
}
.btn-aqua:hover {
  background: linear-gradient(135deg, var(--aqua-secondary), var(--aqua-accent));
  color: #fff;
  box-shadow: 0 4px 12px rgba(8, 131, 149, 0.35);
  transform: translateY(-1px);
}
.btn-aqua-outline {
  border: 2px solid var(--aqua-secondary);
  color: var(--aqua-secondary);
  background: transparent;
  border-radius: 8px;
  font-weight: 600;
}
.btn-aqua-outline:hover {
  background: var(--aqua-secondary);
  color: #fff;
}

/* ---------- Forms ---------- */
.form-control:focus, .form-select:focus {
  border-color: var(--aqua-accent);
  box-shadow: 0 0 0 0.2rem rgba(5, 191, 219, 0.25);
}
.form-label {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--aqua-primary);
}

/* ---------- Login page ---------- */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #06283d 0%, #0a4d68 40%, #088395 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.login-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  max-width: 440px;
  width: 100%;
}
.login-header {
  background: linear-gradient(135deg, var(--aqua-primary), var(--aqua-accent));
  color: #fff;
  padding: 2rem;
  text-align: center;
}
.login-header .login-icon {
  width: 64px;
  height: 64px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}
.login-body {
  padding: 2rem;
}

/* ---------- Progress bars ---------- */
.progress-aqua {
  height: 8px;
  border-radius: 4px;
  background: #e0eef2;
}
.progress-aqua .progress-bar {
  border-radius: 4px;
}

/* ---------- Chart containers ---------- */
.chart-container {
  position: relative;
  height: 260px;
  width: 100%;
}

/* ---------- Pagination ---------- */
.pagination .page-link {
  color: var(--aqua-primary);
  border-color: var(--border-color);
}
.pagination .page-item.active .page-link {
  background: var(--aqua-primary);
  border-color: var(--aqua-primary);
}

/* ---------- Alerts toast area ---------- */
.alert-aqua {
  border-radius: 10px;
  border: none;
  box-shadow: var(--shadow);
}

/* ---------- Empty state ---------- */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}
.empty-state i {
  font-size: 3rem;
  color: var(--aqua-accent);
  opacity: 0.5;
  margin-bottom: 1rem;
}

/* ---------- Mobile sidebar ---------- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1035;
}
.sidebar-overlay.show {
  display: block;
}

@media (max-width: 991.98px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.show {
    transform: translateX(0);
  }
  .main-wrapper {
    margin-left: 0;
  }
}

/* ---------- Utility ---------- */
.text-aqua { color: var(--aqua-primary) !important; }
.text-aqua-accent { color: var(--aqua-accent) !important; }
.bg-aqua-light { background: var(--aqua-bg) !important; }
.fw-semibold { font-weight: 600; }

.life-bar-critical .progress-bar { background-color: var(--status-critical); }
.life-bar-warning .progress-bar { background-color: var(--status-warning); }
.life-bar-normal .progress-bar { background-color: var(--status-normal); }