/* ==========================================================================
   EVDiag Studio — Complete CSS Design System & Theme Engine
   Pure Vanilla CSS (Zero Frameworks, Glassmorphism, Responsive, Dark/Light Themes)
   ========================================================================== */

/* 1. Theme Color Tokens */
:root, [data-theme="dark"] {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-sidebar: #0d1322;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --bg-input: #0e1526;
  --border-color: rgba(75, 85, 99, 0.35);
  --border-glow: rgba(6, 182, 212, 0.4);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-cyan: #06b6d4;
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;
  --accent-purple: #a855f7;

  --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  --code-bg: #060911;
  --selected-row-bg: rgba(6, 182, 212, 0.12);

  /* Semantic Theme Tokens */
  --surface: var(--bg-card);
  --surface-hover: rgba(31, 41, 55, 0.85);
  --bg-surface: rgba(17, 24, 39, 0.85);
  --border: var(--border-color);
  --bg: var(--bg-input);
  --bg-elevated: rgba(31, 41, 55, 0.6);
  --text: var(--text-primary);
  --primary: var(--accent-cyan);
  --accent: var(--accent-cyan);

  /* Live Endpoints Banner Tokens */
  --banner-bg: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(30, 41, 59, 0.85) 100%);
  --banner-border: rgba(56, 189, 248, 0.3);
  --banner-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  --endpoint-box-bg: rgba(11, 15, 25, 0.7);
  --endpoint-box-border: rgba(255, 255, 255, 0.08);
  --endpoint-code-bg: rgba(0, 0, 0, 0.45);

  /* Badge Color Tokens (High Contrast) */
  --badge-blue-text: #60a5fa;
  --badge-blue-bg: rgba(59, 130, 246, 0.18);
  --badge-blue-border: rgba(59, 130, 246, 0.35);

  --badge-cyan-text: #38bdf8;
  --badge-cyan-bg: rgba(6, 182, 212, 0.18);
  --badge-cyan-border: rgba(6, 182, 212, 0.35);

  --badge-green-text: #34d399;
  --badge-green-bg: rgba(16, 185, 129, 0.18);
  --badge-green-border: rgba(16, 185, 129, 0.35);

  --badge-amber-text: #fbbf24;
  --badge-amber-bg: rgba(245, 158, 11, 0.18);
  --badge-amber-border: rgba(245, 158, 11, 0.35);

  --badge-red-text: #f87171;
  --badge-red-bg: rgba(239, 68, 68, 0.18);
  --badge-red-border: rgba(239, 68, 68, 0.35);

  --badge-purple-text: #c084fc;
  --badge-purple-bg: rgba(168, 85, 247, 0.18);
  --badge-purple-border: rgba(168, 85, 247, 0.35);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-sidebar: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: #ffffff;
  --bg-input: #ffffff;
  --border-color: rgba(203, 213, 225, 0.8);
  --border-glow: rgba(59, 130, 246, 0.4);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --accent-cyan: #0284c7;
  --accent-blue: #2563eb;
  --accent-green: #059669;
  --accent-amber: #d97706;
  --accent-red: #dc2626;
  --accent-purple: #9333ea;

  --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --code-bg: #f8fafc;
  --selected-row-bg: rgba(2, 132, 199, 0.08);

  /* Semantic Theme Tokens */
  --surface: var(--bg-card);
  --surface-hover: #f1f5f9;
  --bg-surface: #ffffff;
  --border: var(--border-color);
  --bg: var(--bg-input);
  --bg-elevated: #f1f5f9;
  --text: var(--text-primary);
  --primary: var(--accent-blue);
  --accent: var(--accent-blue);

  /* Live Endpoints Banner Tokens */
  --banner-bg: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  --banner-border: rgba(59, 130, 246, 0.3);
  --banner-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  --endpoint-box-bg: #f8fafc;
  --endpoint-box-border: rgba(203, 213, 225, 0.9);
  --endpoint-code-bg: #ffffff;

  /* Badge Color Tokens (High Contrast) */
  --badge-blue-text: #1d4ed8;
  --badge-blue-bg: rgba(37, 99, 235, 0.1);
  --badge-blue-border: rgba(37, 99, 235, 0.25);

  --badge-cyan-text: #0369a1;
  --badge-cyan-bg: rgba(2, 132, 199, 0.1);
  --badge-cyan-border: rgba(2, 132, 199, 0.25);

  --badge-green-text: #047857;
  --badge-green-bg: rgba(5, 150, 105, 0.1);
  --badge-green-border: rgba(5, 150, 105, 0.25);

  --badge-amber-text: #b45309;
  --badge-amber-bg: rgba(217, 119, 6, 0.1);
  --badge-amber-border: rgba(217, 119, 6, 0.25);

  --badge-red-text: #b91c1c;
  --badge-red-bg: rgba(220, 38, 38, 0.1);
  --badge-red-border: rgba(220, 38, 38, 0.25);

  --badge-purple-text: #7e22ce;
  --badge-purple-bg: rgba(147, 51, 234, 0.1);
  --badge-purple-border: rgba(147, 51, 234, 0.25);
}

/* 2. Global Resets & Typography */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  background-image: 
    radial-gradient(circle at 12% 15%, rgba(6, 182, 212, 0.07) 0%, transparent 45%),
    radial-gradient(circle at 88% 85%, rgba(59, 130, 246, 0.07) 0%, transparent 45%);
  background-attachment: fixed;
  overflow-x: hidden;
}

/* 3. Main App Layout (Sidebar + Header + Content Area) */
.app-container {
  display: flex;
  width: 100vw;
  min-height: 100vh;
}

/* Sidebar */
.app-sidebar {
  width: 260px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-header {
  padding: 1.25rem 1.2rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.4);
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--text-primary), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tag {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.sidebar-nav {
  padding: 1.25rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-item:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: linear-gradient(90deg, rgba(6, 182, 212, 0.15), rgba(59, 130, 246, 0.15));
  color: var(--accent-cyan);
  font-weight: 600;
  border-left: 3px solid var(--accent-cyan);
}

.sidebar-footer {
  padding: 1rem 1.2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Main Content Area */
.app-main {
  margin-left: 260px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header / Topbar */
.app-header {
  height: 64px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.75rem;
  position: sticky;
  top: 0;
  z-index: 90;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.sidebar-toggle-btn {
  display: none;
  background: transparent;
  border: none;
  font-size: 1.4rem;
  color: var(--text-primary);
  cursor: pointer;
}

/* Main Container */
.app-content {
  padding: 2rem 2.25rem;
  flex: 1;
}

/* View Header */
.view-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  gap: 1.5rem;
}

.view-title {
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.view-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 4. KPI Stat Cards Grid */
.grid-cards-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.grid-cards-3 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
  align-items: start;
}

/* Dashboard Grid */
.dashboard-grid {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

/* Chargers View Grid & Cards */
.chargers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.75rem;
  margin-bottom: 2rem;
  align-items: stretch;
}

.charger-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  box-shadow: var(--card-shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.charger-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-cyan);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.15);
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  gap: 1.1rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
  box-shadow: var(--card-shadow);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-glow);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-icon-blue { background: var(--badge-blue-bg); color: var(--badge-blue-text); }
.stat-icon-cyan { background: var(--badge-cyan-bg); color: var(--badge-cyan-text); }
.stat-icon-purple { background: var(--badge-purple-bg); color: var(--badge-purple-text); }
.stat-icon-green { background: var(--badge-green-bg); color: var(--badge-green-text); }

.stat-content {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.stat-value {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

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

/* 5. Card Component */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  box-shadow: var(--card-shadow);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.card-title {
  font-size: 1.05rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* 6. Data Tables */
.table-scroll-container {
  overflow-x: auto;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  margin-top: 0.25rem;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

.data-table thead th {
  padding: 0.85rem 1rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
  position: sticky;
  top: 0;
  z-index: 10;
}

.data-table tbody td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.15s ease;
}

.data-table tbody tr:hover {
  background: var(--bg-card-hover);
}

.selectable-table tr.selected-row {
  background: var(--selected-row-bg) !important;
  border-left: 3px solid var(--accent-cyan);
}

/* 7. Badges */
.badge {
  padding: 0.28rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border-color);
}

.badge-live {
  background: var(--badge-green-bg);
  color: var(--badge-green-text);
  border-color: var(--badge-green-border);
}

.badge-live::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 6px #10b981;
  animation: pulse 2s infinite;
}

.badge-disconnected {
  background: var(--badge-red-bg);
  color: var(--badge-red-text);
  border-color: var(--badge-red-border);
}

.badge-blue { background: var(--badge-blue-bg); color: var(--badge-blue-text); border-color: var(--badge-blue-border); }
.badge-cyan { background: var(--badge-cyan-bg); color: var(--badge-cyan-text); border-color: var(--badge-cyan-border); }
.badge-green { background: var(--badge-green-bg); color: var(--badge-green-text); border-color: var(--badge-green-border); }
.badge-amber { background: var(--badge-amber-bg); color: var(--badge-amber-text); border-color: var(--badge-amber-border); }
.badge-red { background: var(--badge-red-bg); color: var(--badge-red-text); border-color: var(--badge-red-border); }
.badge-purple { background: var(--badge-purple-bg); color: var(--badge-purple-text); border-color: var(--badge-purple-border); }
.badge-outline { background: transparent; color: var(--text-secondary); border-color: var(--border-color); }

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* 8. Buttons & Inputs */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }
.btn-xs { padding: 0.2rem 0.5rem; font-size: 0.75rem; }

.btn-outline {
  background: transparent;
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-cyan);
}

.btn-outline.active {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn-close {
  background: transparent;
  border: none;
  font-size: 1.1rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.25rem;
}

.btn-close:hover { color: var(--text-primary); }

/* Filter Bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 1.75rem;
  align-items: center;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.75rem;
}

.filter-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.filter-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.form-select, .form-input {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem 0.8rem;
  font-size: 0.88rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-select:focus, .form-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}

/* 9. Inspector Layout */
.inspector-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}

@media (max-width: 1080px) {
  .inspector-layout {
    grid-template-columns: 1fr;
  }
}

.json-inspector-container {
  min-height: 380px;
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  overflow: auto;
}

/* 10. Interactive JSON Viewer */
.json-viewer-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82rem;
  line-height: 1.6;
}

.json-viewer-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.json-viewer-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.json-viewer-actions {
  display: flex;
  gap: 0.4rem;
}

.json-node {
  margin-left: 1.1rem;
}

.json-collapsible > .json-toggle-header {
  cursor: pointer;
  user-select: none;
}

.json-arrow {
  display: inline-block;
  font-size: 0.65rem;
  color: var(--accent-cyan);
  transition: transform 0.2s ease;
  margin-right: 0.3rem;
}

.json-collapsed > .json-toggle-header .json-arrow {
  transform: rotate(-90deg);
}

.json-collapsed > .json-children {
  display: none;
}

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

.json-key { color: var(--accent-cyan); font-weight: 600; }
.json-string { color: var(--accent-green); }
.json-number { color: var(--accent-amber); }
.json-boolean { color: var(--accent-purple); font-weight: 600; }
.json-null { color: var(--accent-red); font-style: italic; }

/* 11. State Diagram Flow */
.state-diagram-flow {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 1.5rem 1rem;
  background: var(--bg-secondary);
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.state-node {
  text-align: center;
  padding: 1rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  min-width: 140px;
  box-shadow: var(--card-shadow);
}

.state-node-icon { font-size: 1.75rem; margin-bottom: 0.35rem; }
.state-node-label { font-weight: 700; font-size: 0.95rem; }
.state-node-sub { font-size: 0.72rem; color: var(--text-muted); }

.state-node-disc { border-color: rgba(239, 68, 68, 0.4); }
.state-node-conn { border-color: rgba(59, 130, 246, 0.4); }
.state-node-ready { border-color: rgba(16, 185, 129, 0.4); }

.state-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 1.2rem;
  color: var(--accent-cyan);
  font-weight: 700;
}

.state-arrow span {
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-bottom: 0.2rem;
}

/* 12. Drawer & Modal */
.drawer-backdrop, .modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  justify-content: flex-end;
}

.modal-backdrop {
  align-items: center;
  justify-content: center;
}

.drawer-panel {
  width: 520px;
  max-width: 100vw;
  background: var(--bg-secondary);
  height: 100vh;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  animation: slideIn 0.25s ease;
}

.modal-panel {
  width: 650px;
  max-width: 90vw;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.2s ease;
}

@keyframes slideIn {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.drawer-header, .modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.drawer-title, .modal-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.drawer-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: monospace;
}

.drawer-body, .modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
}

/* Modal System & View Compatibility */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1050;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.5);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  margin: auto;
}

.modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.close-modal {
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-muted);
}
.close-modal:hover { color: #ef4444; }

.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  color: var(--text-primary);
  font-size: 0.88rem;
  box-sizing: border-box;
}
.form-control:focus {
  outline: none;
  border-color: var(--accent-cyan);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.table th, .table td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
}
.table-hover tbody tr:hover {
  background: var(--bg-card-hover);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}
.btn-danger:hover {
  background: #ef4444;
  color: #fff;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}
.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-cyan);
}

.btn-outline-danger {
  background: transparent;
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
}
.btn-outline-danger:hover {
  background: rgba(239, 68, 68, 0.2);
}

/* 13. Toast Component */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
  font-size: 0.85rem;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.25s ease;
}

.toast-show {
  opacity: 1;
  transform: translateY(0);
}

.toast-success { border-color: var(--badge-green-border); color: var(--accent-green); }
.toast-error { border-color: var(--badge-red-border); color: var(--accent-red); }
.toast-info { border-color: var(--badge-cyan-border); color: var(--accent-cyan); }

/* 14. Utility Classes */
.hidden { display: none !important; }
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1.25rem; }
.gap-5 { gap: 1.75rem; }
.gap-6 { gap: 2.25rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.85rem; }
.mb-4 { margin-bottom: 1.25rem; }
.mb-5 { margin-bottom: 1.75rem; }
.mb-6 { margin-bottom: 2.25rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.85rem; }
.mt-4 { margin-top: 1.25rem; }
.mt-5 { margin-top: 1.75rem; }
.mt-6 { margin-top: 2.25rem; }
.mt-auto { margin-top: auto; }
.ml-auto { margin-left: auto; }

.p-4 { padding: 1.25rem; }
.p-5 { padding: 1.75rem; }
.py-4 { padding-top: 1.25rem; padding-bottom: 1.25rem; }
.py-6 { padding-top: 1.75rem; padding-bottom: 1.75rem; }

.w-full { width: 100%; }
.font-bold { font-weight: 700; }
.font-mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.88rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.15rem; }
.text-xl { font-size: 1.4rem; }
.text-muted { color: var(--text-muted); }
.text-cyan { color: var(--accent-cyan); }
.text-green { color: var(--accent-green); }
.text-purple { color: var(--accent-purple); }
.text-primary { color: var(--text-primary); }
.text-center { text-align: center; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.max-w-24 { max-width: 6rem; }
.max-w-xs { max-width: 12rem; }
.max-w-md { max-width: 22rem; }

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

.detail-grid-compact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  background: var(--code-bg);
  padding: 0.85rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

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

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

.detail-value {
  font-size: 0.82rem;
  color: var(--text-primary);
}

.mini-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.mini-list-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.85rem;
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

/* CSMS Endpoints Banner & Code Styling */
.endpoints-banner {
  background: var(--banner-bg) !important;
  border: 1px solid var(--banner-border) !important;
  box-shadow: var(--banner-shadow) !important;
  border-radius: 14px;
  padding: 1.5rem !important;
  margin-bottom: 2rem !important;
}

.endpoint-box {
  background: var(--endpoint-box-bg);
  padding: 1.1rem 1.25rem;
  border-radius: 10px;
  border: 1px solid var(--endpoint-box-border);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.endpoint-box:hover {
  border-color: var(--border-glow);
}

.endpoint-code {
  word-break: break-all;
  padding: 0.55rem 0.75rem;
  background: var(--endpoint-code-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  user-select: all;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.json-viewer-container {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
  max-height: 300px;
  overflow: auto;
}

/* 15. Command Console Styles (Phase 7) */
.cmd-console {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.cmd-header .view-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.35rem 0;
}

.cmd-header .view-icon {
  font-size: 1.4rem;
}

.cmd-header .view-subtitle {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin: 0;
  line-height: 1.5;
}

.cmd-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}

@media (max-width: 1100px) {
  .cmd-grid { grid-template-columns: 1fr; }
}

.cmd-sender .card-body,
.cmd-response .card-body {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Tabs */
.cmd-tabs {
  display: flex;
  gap: 0.35rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.25rem;
}

.cmd-tab {
  flex: 1;
  padding: 0.55rem 0.85rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.84rem;
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.2s;
  font-weight: 500;
}

.cmd-tab:hover {
  color: var(--text-secondary);
  background: var(--bg-card-hover);
}

.cmd-tab.active {
  background: var(--accent-cyan);
  color: #fff;
  box-shadow: 0 2px 8px rgba(6, 182, 212, 0.3);
}

/* Form Elements */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  padding: 0.25rem 0.5rem;
}

.form-error {
  font-size: 0.78rem;
  color: var(--accent-red);
  margin-top: 0.25rem;
}

.form-select,
.form-input,
.form-textarea {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.6rem 0.85rem;
  color: var(--text-primary);
  font-size: 0.88rem;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
  box-sizing: border-box;
}

.form-select:focus,
.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}

.form-select:focus,
.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.2);
}

.form-textarea {
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82rem;
  min-height: 100px;
}

/* Send Button */
.btn-send {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.7rem 1.2rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.25s;
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(6, 182, 212, 0.45);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-lg { padding: 0.7rem 1.4rem; font-size: 1rem; }

/* Response Panel */
.cmd-result-empty {
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cmd-result-placeholder {
  text-align: center;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.cmd-result-status {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.92rem;
}

.cmd-status-success {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34d399;
}

.cmd-status-error {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #f87171;
}

.cmd-status-icon { font-size: 1.2rem; }

/* Latency Bar */
.cmd-latency-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  background: var(--code-bg);
  border-radius: 8px;
  margin-top: 0.5rem;
}

.cmd-latency-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.cmd-latency-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  min-width: 60px;
}

.cmd-latency-meter {
  flex: 1;
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}

.cmd-latency-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-cyan), var(--accent-purple));
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* Response Body */
.cmd-response-body {
  margin-top: 0.75rem;
}

.cmd-response-title {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin: 0 0 0.5rem 0;
  font-weight: 600;
}

.cmd-raw-response {
  background: var(--code-bg);
  padding: 0.75rem;
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--text-primary);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.cmd-error-detail {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 6px;
  padding: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Spinner */
.cmd-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: cmd-spin 0.8s linear infinite;
}

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

/* Badge colors */
.badge-yellow { background: var(--badge-amber-bg); color: var(--badge-amber-text); border-color: var(--badge-amber-border); }
.badge-gray { background: rgba(107, 114, 128, 0.15); color: var(--text-secondary); border-color: var(--border-color); }

/* 16.5 Transaction Monitor Styles (Phase 8) */
.txn-view { display: flex; flex-direction: column; gap: 1.5rem; }

.txn-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1.5rem;
}

@media (max-width: 1100px) {
  .txn-grid { grid-template-columns: 1fr; }
}

.txn-item {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: background 0.2s;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.txn-item:hover { background: var(--bg-card-hover); }
.txn-item-selected { background: var(--bg-card-hover); border-left: 3px solid var(--accent-cyan); }

.txn-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.txn-item-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.txn-detail { display: flex; flex-direction: column; gap: 1rem; }

.txn-chart-section {
  margin-top: 1rem;
  background: var(--code-bg);
  border-radius: 8px;
  padding: 1rem;
}

.txn-chart-section canvas {
  width: 100%;
  border-radius: 6px;
}

.txn-meter-table { margin-top: 0.5rem; }


/* ===== Phase 9: Test Engine Styles ===== */

.tests-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1.75rem;
}
.tests-scenarios-card { grid-column: 1; grid-row: 1 / 3; }
.tests-run-card { grid-column: 2; grid-row: 1; }
.tests-history-card { grid-column: 2; grid-row: 2; }

.scenario-item {
  padding: 1rem 1.15rem;
  border-radius: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  margin-bottom: 0.85rem;
  transition: border-color 0.2s;
}
.scenario-item:last-child {
  margin-bottom: 0;
}
.scenario-item:hover { border-color: var(--accent); }
.scenario-item-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.4rem; }
.scenario-name { font-weight: 600; color: var(--text-primary); }
.scenario-item-desc { font-size: 0.78rem; color: var(--text-secondary); margin-bottom: 0.5rem; line-height: 1.4; }
.scenario-item-meta { display: flex; gap: 1.25rem; font-size: 0.75rem; color: var(--text-muted); }

.badge-protocol { background: rgba(99,102,241,0.15); color: #818cf8; font-size: 0.68rem; padding: 0.15rem 0.5rem; border-radius: 4px; }

.scenario-detail-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.15rem;
  margin-bottom: 1.25rem;
}
.scenario-detail-title { font-weight: 600; color: var(--text-primary); margin-bottom: 0.3rem; }
.scenario-detail-desc { font-size: 0.78rem; color: var(--text-secondary); margin-bottom: 0.6rem; }

.step-preview-item {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.3rem 0;
  font-size: 0.78rem;
}
.step-badge {
  font-size: 0.68rem;
  padding: 0.12rem 0.45rem;
  border-radius: 4px;
  font-weight: 600;
  white-space: nowrap;
}
.step-send_command { background: var(--badge-blue-bg); color: var(--badge-blue-text); }
.step-delay { background: var(--badge-amber-bg); color: var(--badge-amber-text); }
.step-assert_response { background: var(--badge-green-bg); color: var(--badge-green-text); }
.step-assert_state { background: var(--badge-purple-bg); color: var(--badge-purple-text); }
.step-wait_message { background: rgba(236,72,153,0.15); color: #f472b6; }
.step-desc { color: var(--text-secondary); }

.btn-block { width: 100%; }

.test-running {
  text-align: center;
  padding: 1.5rem;
  color: var(--accent);
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }

.test-result { border-radius: 8px; padding: 0.85rem; border: 1px solid var(--border); }
.test-result-pass { border-color: #22c55e; background: rgba(34,197,94,0.08); }
.test-result-fail { border-color: #ef4444; background: rgba(239,68,68,0.08); }
.test-result-info { border-color: var(--accent); background: rgba(99,102,241,0.08); }

.test-result-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.6rem; }
.test-result-status { font-weight: 700; font-size: 1rem; }
.test-result-name { font-size: 0.82rem; color: var(--text-secondary); }

.step-result-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.5rem;
  align-items: center;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  margin-bottom: 0.3rem;
  font-size: 0.78rem;
}
.step-result-pass { background: rgba(34,197,94,0.06); }
.step-result-fail { background: rgba(239,68,68,0.06); }
.step-result-badge { font-weight: 600; white-space: nowrap; }
.step-result-desc { color: var(--text-secondary); }
.step-result-time { color: var(--text-muted); font-size: 0.72rem; }
.step-result-detail { grid-column: 1 / -1; font-size: 0.7rem; color: var(--text-muted); font-family: 'SF Mono', monospace; word-break: break-all; padding-top: 0.2rem; }

.test-run-item {
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 0.5rem;
  background: var(--bg-elevated);
}
.test-run-passed { border-left: 3px solid #22c55e; }
.test-run-failed { border-left: 3px solid #ef4444; }
.test-run-running { border-left: 3px solid #f59e0b; }
.test-run-completed { border-left: 3px solid var(--accent); }

.test-run-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.3rem; }
.test-run-status { font-weight: 600; font-size: 0.85rem; }
.test-run-name { font-size: 0.78rem; color: var(--text-secondary); }
.test-run-meta { display: flex; gap: 0.85rem; font-size: 0.72rem; color: var(--text-muted); flex-wrap: wrap; }

.test-run-steps-compact { display: flex; gap: 3px; margin-top: 0.4rem; }
.step-dot { width: 14px; height: 14px; border-radius: 3px; }
.step-dot-pass { background: #22c55e; }
.step-dot-fail { background: #ef4444; }
.step-dot-skip { background: #6b7280; }

.empty-state { text-align: center; padding: 2rem; color: var(--text-muted); font-size: 0.85rem; }

/* 16. Responsive Breakpoints */
@media (max-width: 900px) {
  .app-sidebar {
    transform: translateX(-100%);
  }

  .app-sidebar.sidebar-open {
    transform: translateX(0);
  }

  .app-main {
    margin-left: 0;
  }

  .sidebar-toggle-btn {
    display: block;
  }

  .tests-grid {
    grid-template-columns: 1fr;
  }
  .tests-scenarios-card { grid-row: auto; }
}