/* Stations Trouble Shooting Monitor (STS) — Professional Blue-Gray NOC Theme CSS */

:root {
  --bg-dark: #1E293B;       /* Main Page Background & Lighter Controls Background */
  --bg-card: #243244;       /* Primary Cards & Panels Surface */
  --bg-card-hover: #2d3e54; /* Card Hover State */
  --bg-input: #1E293B;      /* Search / Select / Sub-containers Background */
  --border-color: #334155;  /* Muted Slate Border */
  --text-main: #F8FAFC;     /* Primary High-Emphasis Text */
  --text-muted: #94A3B8;    /* Muted Secondary Text */
  --text-dim: #64748B;      /* Dim Label Text */

  --accent-blue: #38BDF8;   /* Primary UI Accent (Sky Blue / Cyan) */
  --accent-indigo: #6366F1;

  --severity-critical: #EF4444;
  --severity-critical-bg: rgba(239, 68, 68, 0.15);
  --severity-bad: #F97316;
  --severity-bad-bg: rgba(249, 115, 22, 0.15);
  --severity-warning: #FACC15;
  --severity-warning-bg: rgba(250, 204, 21, 0.15);
  --severity-healthy: #22C55E;
  --severity-healthy-bg: rgba(34, 197, 94, 0.15);

  --status-online: #22C55E;
  --status-offline: #EF4444;

  --radius: 10px;
  --transition: all 0.2s ease-in-out;
  --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.22); /* Subtle Dark NOC Card Shadow */
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
}

/* Header Navbar */
.navbar {
  background-color: var(--bg-dark);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand-icon {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-indigo));
  color: #0f172a;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.3px;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-item {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  transition: var(--transition);
}

.nav-item:hover {
  color: var(--text-main);
  background-color: var(--border-color);
}

.nav-item.active {
  color: var(--accent-blue);
  background-color: var(--border-color);
  font-weight: 600;
}

/* Navigation Dropdown Menu */
.nav-dropdown {
  position: relative;
  display: inline-block;
}

.nav-dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 0.3rem;
  background-color: var(--bg-card);
  min-width: 190px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  z-index: 1000;
  overflow: hidden;
}

.nav-dropdown-content a {
  color: var(--text-muted);
  padding: 0.65rem 1rem;
  text-decoration: none;
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-dropdown-content a:hover,
.nav-dropdown-content a.active {
  background-color: var(--border-color);
  color: var(--accent-blue);
}

.nav-dropdown:hover .nav-dropdown-content {
  display: block;
}

/* Layout Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Alerts Banner */
.alert-banner {
  background-color: rgba(239, 68, 68, 0.12);
  border: 1px solid var(--severity-critical);
  color: #fca5a5;
  padding: 0.85rem 1.2rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
}

.alert-banner.hidden {
  display: none;
}

/* Metric Cards Grid */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.summary-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.summary-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--accent-blue);
}

.summary-card.critical::before { background-color: var(--severity-critical); }
.summary-card.bad::before { background-color: var(--severity-bad); }
.summary-card.warning::before { background-color: var(--severity-warning); }
.summary-card.healthy::before { background-color: var(--severity-healthy); }

.summary-title {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  margin-bottom: 0.4rem;
}

.summary-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-main);
}

.summary-subtext {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* Filter Toolbar */
.toolbar {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  box-shadow: var(--shadow-card);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-filter {
  background-color: var(--bg-card); /* #243244 — Shared Surface System */
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-filter:hover {
  background-color: var(--border-color);
  color: var(--text-main);
}

.btn-filter.active {
  background-color: var(--accent-blue); /* #38BDF8 Active Cyan Accent */
  border-color: var(--accent-blue);
  color: #0f172a;
}

.btn-filter.critical.active { background-color: var(--severity-critical); color: #fff; }
.btn-filter.bad.active { background-color: var(--severity-bad); color: #fff; }
.btn-filter.warning.active { background-color: var(--severity-warning); color: #000; }
.btn-filter.healthy.active { background-color: var(--severity-healthy); color: #fff; }

.search-box, .select-box {
  background-color: var(--bg-dark); /* #1E293B Lighter Blue-Gray Controls */
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.45rem 0.8rem;
  border-radius: 6px;
  font-size: 0.85rem;
  outline: none;
}

.select-box option {
  background-color: var(--bg-dark); /* #1E293B Dropdown Option Styling */
  color: var(--text-main);
}

.search-box::placeholder {
  color: var(--text-muted);
}

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

.live-indicator {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--severity-healthy);
  box-shadow: 0 0 8px var(--severity-healthy);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

/* Client Cards Grid Layout */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
}

.client-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: var(--transition);
  position: relative;
  box-shadow: var(--shadow-card);
}

.client-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-blue);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
}

.client-card.CRITICAL {
  border-color: rgba(239, 68, 68, 0.4);
}

.client-card.BAD {
  border-color: rgba(249, 115, 22, 0.4);
}

.client-card.WARNING {
  border-color: rgba(250, 204, 21, 0.4);
}

.client-card.HEALTHY {
  border-color: rgba(34, 197, 94, 0.3);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.client-mac {
  font-family: monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.5px;
}

.ap-name {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.15rem;
}

.severity-badge {
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.severity-badge.CRITICAL { background-color: var(--severity-critical-bg); color: var(--severity-critical); border: 1px solid var(--severity-critical); }
.severity-badge.BAD { background-color: var(--severity-bad-bg); color: var(--severity-bad); border: 1px solid var(--severity-bad); }
.severity-badge.WARNING { background-color: var(--severity-warning-bg); color: var(--severity-warning); border: 1px solid var(--severity-warning); }
.severity-badge.HEALTHY { background-color: var(--severity-healthy-bg); color: var(--severity-healthy); border: 1px solid var(--severity-healthy); }

/* Health Score Bar */
.health-score-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.health-score-val {
  font-size: 1.25rem;
  font-weight: 800;
  width: 45px;
}

.progress-bar-bg {
  flex: 1;
  height: 8px;
  background-color: var(--bg-dark); /* #1E293B */
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.4s ease;
}

/* Radio Measurements Matrix Panel */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
  background-color: var(--bg-dark); /* #1E293B Lighter Blue-Gray Matrix Container */
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-weight: 600;
}

.metric-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.metric-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Problem Tags */
.problem-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.problem-tag {
  background-color: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
}

/* Empty State */
.empty-state {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 3rem;
  text-align: center;
  color: var(--text-muted);
  grid-column: 1 / -1;
  box-shadow: var(--shadow-card);
}

/* Table View Fallback */
.clients-table-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow-x: auto;
  box-shadow: var(--shadow-card);
}

.clients-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.clients-table th {
  background-color: var(--bg-dark);
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.clients-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.clients-table tr:hover {
  background-color: var(--bg-card-hover);
}

/* Documentation / Guide Pages Styling */
.guide-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem;
}

.guide-header {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.guide-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-indigo));
}

.guide-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.guide-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.guide-section {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-card);
}

.guide-section-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.6rem;
}

.guide-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.guide-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.88rem;
}

.guide-table th {
  background-color: var(--bg-dark);
  color: var(--text-main);
  padding: 0.75rem 1rem;
  text-align: left;
  border: 1px solid var(--border-color);
  font-weight: 700;
}

.guide-table td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.guide-table tr:nth-child(even) {
  background-color: rgba(15, 23, 42, 0.4);
}

.callout-box {
  border-radius: 8px;
  padding: 1.1rem 1.25rem;
  margin: 1rem 0;
  border-left: 4px solid var(--accent-blue);
  background-color: var(--bg-dark);
  font-size: 0.9rem;
  line-height: 1.6;
}

.callout-box.critical {
  border-left-color: var(--severity-critical);
  background-color: var(--severity-critical-bg);
  color: #fca5a5;
}

.callout-box.bad {
  border-left-color: var(--severity-bad);
  background-color: var(--severity-bad-bg);
  color: #fdba74;
}

.callout-box.warning {
  border-left-color: var(--severity-warning);
  background-color: var(--severity-warning-bg);
  color: #fef08a;
}

.callout-box.healthy {
  border-left-color: var(--severity-healthy);
  background-color: var(--severity-healthy-bg);
  color: #86efac;
}

.example-card {
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.1rem;
  margin-bottom: 1rem;
}

.example-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.example-metrics {
  display: flex;
  gap: 1.5rem;
  font-family: monospace;
  font-size: 0.9rem;
  color: var(--accent-blue);
  margin-bottom: 0.5rem;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.workflow-step {
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.workflow-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--accent-blue);
  color: #0f172a;
  font-weight: 800;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.workflow-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-main);
}

.workflow-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.three-col-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.col-card {
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.1rem;
}

.col-card-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--accent-blue);
  margin-bottom: 0.4rem;
}

.col-card-sub {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0.6rem;
}

/* AP Management Modal & Forms */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal-backdrop.hidden { display: none; }

.modal {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: 100%;
  max-width: 540px;
  padding: 1.75rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.modal-title { font-size: 1.2rem; font-weight: 700; }
.btn-close { background: none; border: none; color: var(--text-muted); font-size: 1.5rem; cursor: pointer; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

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

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
  font-weight: 600;
}

.form-group input, .form-group select {
  width: 100%;
  padding: 0.65rem 0.8rem;
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-main);
  font-size: 0.9rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn-sec {
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.6rem 1.1rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--accent-blue);
  border: none;
  color: #0f172a;
  padding: 0.6rem 1.1rem;
  border-radius: 6px;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary:hover { background-color: #0284c7; color: #fff; }