:root {
  --bg-deep: #090c10;
  --bg-panel: #10151e;
  --bg-card: #151c28;
  --bg-card-hover: #1a2332;
  --bg-input: #0b0f17;
  --border-subtle: #232f42;
  --border-focus: #00d4ff;
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-cyan: #00d4ff;
  --accent-cyan-dim: rgba(0, 212, 255, 0.14);
  --accent-green: #10b981;
  --accent-green-dim: rgba(16, 185, 129, 0.15);
  --accent-amber: #f59e0b;
  --accent-amber-dim: rgba(245, 158, 11, 0.16);
  --accent-red: #ef4444;
  --accent-red-bright: #ff2a4b;
  --accent-red-dim: rgba(239, 68, 68, 0.2);
  --accent-purple: #8b5cf6;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.55);
}

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

body {
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
  background: #28354a;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #3b4d6b;
}

/* Buttons & Inputs */
button {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: #1d2738;
  color: var(--text-primary);
  padding: 7px 13px;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

button:hover:not(:disabled) {
  background: #27354c;
  border-color: #3b5070;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
  border-color: #00d4ff;
  color: #ffffff;
  box-shadow: 0 2px 12px rgba(0, 212, 255, 0.22);
}
.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #00c8f0 0%, #0088cc 100%);
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.35);
}

.btn-success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  border-color: #34d399;
  color: #ffffff;
}
.btn-success:hover:not(:disabled) {
  background: linear-gradient(135deg, #14c98e 0%, #07ad79 100%);
}

.btn-amber {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  border-color: #fbbf24;
  color: #090c10;
  font-weight: 700;
}
.btn-amber:hover:not(:disabled) {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.45);
  color: #fca5a5;
}
.btn-danger:hover:not(:disabled) {
  background: rgba(239, 68, 68, 0.28);
  border-color: #ef4444;
  color: #ffffff;
}

.btn-dev {
  background: rgba(139, 92, 246, 0.16);
  border-color: rgba(139, 92, 246, 0.45);
  color: #c4b5fd;
  font-size: 12px;
  padding: 5px 10px;
}
.btn-dev:hover:not(:disabled) {
  background: rgba(139, 92, 246, 0.3);
  border-color: #8b5cf6;
  color: #fff;
}

.btn-sm {
  padding: 4px 9px;
  font-size: 12px;
}

.btn-lg {
  padding: 12px 26px;
  font-size: 15px;
  border-radius: var(--radius-md);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"] {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 13px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="number"],
.mono-input {
  font-family: var(--font-mono);
}

input:focus:not(:disabled) {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.18);
}

input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* Bright Red Collision Input Highlight */
input.input-collision {
  background: rgba(239, 68, 68, 0.22) !important;
  border: 2px solid var(--accent-red-bright) !important;
  color: #ffd6d6 !important;
  box-shadow: 0 0 10px rgba(255, 42, 75, 0.5) !important;
  font-weight: 700;
}

.collision-warning-inline {
  color: #ff4d6a;
  font-size: 11px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 6px;
  background: rgba(239, 68, 68, 0.18);
  border: 1px solid rgba(239, 68, 68, 0.5);
  border-radius: 4px;
}

/* Welcome Page */
.welcome-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 40px 20px;
  background:
    radial-gradient(circle at 20% 20%, rgba(0, 212, 255, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 80% 75%, rgba(16, 185, 129, 0.07) 0%, transparent 45%),
    var(--bg-deep);
}

.welcome-card {
  max-width: 900px;
  width: 100%;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-lg);
}

.brand-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid rgba(0, 212, 255, 0.3);
  margin-bottom: 18px;
}

.welcome-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.6px;
  margin-bottom: 14px;
  background: linear-gradient(90deg, #ffffff 0%, #9be7ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.welcome-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.65;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 34px;
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
}

.feature-box h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.feature-box p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.welcome-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

/* Top Mode Bar */
.top-mode-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 10px 22px;
  background: rgba(16, 21, 30, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-subtle);
}

.mode-bar-left,
.mode-bar-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.brand-mini {
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -0.3px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 8px;
}

.mode-badge {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.mode-badge.manage {
  background: var(--accent-green-dim);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.45);
}

.mode-badge.view {
  background: var(--accent-amber-dim);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.45);
}

.poll-status {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Workspace Container */
.workspace-container {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 18px 22px 32px;
  max-width: 1920px;
  margin: 0 auto;
}

/* Section 1: Band Information Header */
.band-info-section {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.band-title-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.band-label-tag {
  font-size: 11px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.band-name-display {
  font-size: 26px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.4px;
}

.band-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--text-secondary);
}

.secret-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
}

.band-controls-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.email-control {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

/* Section 2: WAN Locations & ESP Members Kanban */
.section-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.section-title {
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.locations-kanban {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  overflow-x: auto;
  padding-bottom: 12px;
  min-height: 420px;
}

.location-column {
  min-width: 430px;
  max-width: 460px;
  flex: 0 0 440px;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  max-height: 820px;
}

.location-header {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(21, 28, 40, 0.7);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.location-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.location-name-input {
  font-weight: 700;
  font-size: 14px;
  flex: 1;
}

.location-gw-warning {
  background: rgba(245, 158, 11, 0.16);
  border: 1px solid rgba(245, 158, 11, 0.5);
  color: #fbbf24;
  padding: 5px 9px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.location-body {
  padding: 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.add-device-btn {
  width: 100%;
  padding: 9px;
  border-style: dashed;
  border-color: #384d6b;
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.05);
}
.add-device-btn:hover:not(:disabled) {
  background: rgba(0, 212, 255, 0.12);
  border-color: var(--accent-cyan);
}

.add-location-column-btn {
  min-width: 240px;
  height: 120px;
  border: 2px dashed var(--border-subtle);
  background: rgba(16, 21, 30, 0.5);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-shrink: 0;
}
.add-location-column-btn:hover:not(:disabled) {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.06);
}

/* ESP Configuration Card */
.esp-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  display: flex;
  flex-direction: column;
}

.esp-card.selected {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 1px var(--accent-cyan), 0 8px 24px rgba(0, 0, 0, 0.4);
}

.esp-card.dirty {
  border-color: var(--accent-amber);
}

.esp-card-header {
  padding: 12px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 9px;
  background: rgba(11, 15, 23, 0.45);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.esp-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.esp-name-input {
  font-weight: 700;
  width: 140px;
}

.badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 7px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.badge-mac {
  background: #0b0f17;
  color: #cbd5e1;
  border: 1px solid #28354a;
}

.badge-block {
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 212, 255, 0.35);
}

.badge-online {
  background: var(--accent-green-dim);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.badge-offline {
  background: rgba(100, 116, 139, 0.18);
  color: #94a3b8;
  border: 1px solid rgba(100, 116, 139, 0.35);
}

.badge-sync-ok {
  background: var(--accent-green-dim);
  color: #34d399;
}

.badge-sync-pending {
  background: var(--accent-amber-dim);
  color: #fbbf24;
}

.badge-sync-unpaired {
  background: rgba(148, 163, 184, 0.14);
  color: #cbd5e1;
}

.esp-pairing-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  flex-wrap: wrap;
}

.pairing-countdown {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.18);
  border: 1px solid #f59e0b;
  padding: 4px 8px;
  border-radius: 4px;
  animation: pulse-border 1.2s infinite;
}

@keyframes pulse-border {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.gateway-radio-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

.gateway-radio-label input[type="radio"] {
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

/* ESP Card Body */
.esp-card-body {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.waiting-capabilities-box {
  background: rgba(11, 15, 23, 0.65);
  border: 1px dashed #334155;
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.sub-section {
  background: rgba(11, 15, 23, 0.45);
  border: 1px solid #1e293b;
  border-radius: var(--radius-sm);
  padding: 9px 10px;
}

.sub-section-title {
  font-size: 11px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--accent-cyan);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.interface-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 5px 0;
  border-bottom: 1px solid rgba(35, 47, 66, 0.5);
  flex-wrap: wrap;
}
.interface-row:last-child {
  border-bottom: none;
}

.iface-toggle-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-primary);
  cursor: pointer;
}

.iface-toggle-label input[type="checkbox"] {
  accent-color: var(--accent-cyan);
  width: 14px;
  height: 14px;
  cursor: pointer;
}

.iface-inputs {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.ch-field-group {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--text-secondary);
}

.ch-input {
  width: 58px;
  text-align: center;
  padding: 4px 6px !important;
}

.service-block {
  border-top: 1px solid rgba(35, 47, 66, 0.6);
  padding-top: 8px;
  margin-top: 8px;
}
.service-block:first-of-type {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.service-params-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 7px;
  margin-top: 7px;
}

.service-param-full {
  grid-column: 1 / -1;
}

.param-field {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.param-field label {
  font-size: 11px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.esp-card-footer {
  padding: 10px 12px;
  border-top: 1px solid var(--border-subtle);
  background: rgba(11, 15, 23, 0.5);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

/* Section 3: Bottom Split Panel (50% / 50%) */
.bottom-split-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: start;
}

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

.split-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  min-height: 360px;
}

.channel-table-wrap {
  overflow-x: auto;
  margin-top: 10px;
}

.channel-matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}

.channel-matrix-table th,
.channel-matrix-table td {
  padding: 9px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: top;
}

.channel-matrix-table th {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-muted);
  background: rgba(11, 15, 23, 0.6);
}

.row-collision {
  background: rgba(239, 68, 68, 0.14);
}

.row-orphan {
  background: rgba(245, 158, 11, 0.09);
}

.alert-pill-collision {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(239, 68, 68, 0.25);
  border: 1px solid #ef4444;
  color: #fca5a5;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  margin-top: 4px;
}

.alert-pill-orphan {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(245, 158, 11, 0.22);
  border: 1px solid #f59e0b;
  color: #fcd34d;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  margin-top: 4px;
}

.route-chip {
  display: inline-block;
  background: var(--bg-card);
  border: 1px solid #2b3950;
  border-radius: 4px;
  padding: 2px 7px;
  margin: 2px 4px 2px 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
}

/* Telemetry Inspector (Right Panel) */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 10px;
  margin: 12px 0;
}

.telemetry-stat {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.telemetry-stat .stat-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.telemetry-stat .stat-value {
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
  margin-top: 3px;
}

.ptp-placeholder-card {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.06) 0%, rgba(139, 92, 246, 0.06) 100%);
  border: 1px dashed rgba(0, 212, 255, 0.35);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-top: 12px;
}

.json-viewer-details {
  margin-top: 10px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.json-viewer-details summary {
  padding: 8px 12px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-cyan);
  user-select: none;
}

.json-viewer-details pre {
  padding: 10px 12px;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: #cbd5e1;
  overflow-x: auto;
  max-height: 240px;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 13, 0.78);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-box {
  background: var(--bg-panel);
  border: 1px solid #334663;
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 440px;
  padding: 24px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
}

.modal-error {
  background: var(--accent-red-dim);
  border: 1px solid var(--accent-red);
  color: #fecaca;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 6px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: #172130;
  border-left: 4px solid var(--accent-cyan);
  color: var(--text-primary);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  min-width: 240px;
}
.toast.error {
  border-left-color: var(--accent-red);
}
.toast.success {
  border-left-color: var(--accent-green);
}

/* ============================================================================
   OTA Firmware Vault, /admin Portal & Per-ESP Firmware Upgrade Styles
   ============================================================================ */

select,
textarea {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  font-size: 13px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

select:focus:not(:disabled),
textarea:focus:not(:disabled) {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.18);
}

.modal-box.modal-box-lg {
  max-width: 720px;
  max-height: 88vh;
  overflow-y: auto;
}

/* Hardware, Firmware & OTA Status Badges */
.badge-hw {
  background: rgba(139, 92, 246, 0.16);
  color: #ddd6fe;
  border: 1px solid rgba(139, 92, 246, 0.4);
}

.badge-fw {
  background: rgba(15, 23, 42, 0.85);
  color: #e2e8f0;
  border: 1px solid #334155;
}

.update-available-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #00d4ff;
  box-shadow: 0 0 8px #00d4ff;
  margin-left: 3px;
}

.badge-update-avail {
  background: rgba(0, 212, 255, 0.14);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 212, 255, 0.45);
}

.badge-ota-queued {
  background: var(--accent-amber-dim);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.5);
}

.badge-ota-success {
  background: var(--accent-green-dim);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.5);
}

.badge-ota-failed {
  background: var(--accent-red-dim);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.55);
}

/* Admin Portal Layout */
.admin-grid-top {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 18px;
  align-items: start;
}

@media (max-width: 1120px) {
  .admin-grid-top {
    grid-template-columns: 1fr;
  }
}

.admin-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}

.dropzone-box {
  border: 2px dashed #334663;
  border-radius: var(--radius-md);
  background: rgba(11, 15, 23, 0.65);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.dropzone-box:hover,
.dropzone-box.dragover {
  border-color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.08);
}

.progress-track {
  width: 100%;
  height: 8px;
  background: #0b0f17;
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 6px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #00d4ff 0%, #10b981 100%);
  transition: width 0.15s ease;
}

.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}

.admin-stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.admin-stat-card .stat-num {
  font-size: 24px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #ffffff;
  margin-top: 4px;
}

.fw-option-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.fw-option-card.installed {
  border-color: rgba(16, 185, 129, 0.5);
  background: rgba(16, 185, 129, 0.06);
}

a.link-download {
  color: var(--accent-cyan);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
}
a.link-download:hover {
  text-decoration: underline;
}

/* ============================================================================
   Browser USB Web Flasher (/welcome) & Live Serial Monitor Styles
   ============================================================================ */

.btn-usb-installer {
  background: linear-gradient(135deg, #7c3aed 0%, #0284c7 100%);
  border-color: #a78bfa;
  color: #ffffff;
  box-shadow: 0 2px 14px rgba(139, 92, 246, 0.28);
}
.btn-usb-installer:hover:not(:disabled) {
  background: linear-gradient(135deg, #8b5cf6 0%, #0ea5e9 100%);
  border-color: #c4b5fd;
  box-shadow: 0 4px 18px rgba(139, 92, 246, 0.42);
}

.modal-box.modal-box-xl {
  max-width: 820px;
  width: 96%;
  max-height: 90vh;
  overflow-y: auto;
}

.installer-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 10px;
}

.installer-tab {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  font-weight: 700;
}

.installer-tab.active {
  background: var(--accent-cyan-dim);
  border-color: var(--accent-cyan);
  color: #ffffff;
}

.board-selector-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 10px;
}

.board-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 13px 14px;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 5px;
  text-align: left;
}

.board-card:hover {
  border-color: #476288;
  background: var(--bg-card-hover);
}

.board-card.selected {
  border-color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.09);
  box-shadow: 0 0 0 1px var(--accent-cyan);
}

.board-card-title {
  font-weight: 800;
  font-size: 13.5px;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.board-card-sub {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.board-tip-box {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.38);
  color: #fde68a;
  border-radius: var(--radius-sm);
  padding: 10px 13px;
  font-size: 12.5px;
  line-height: 1.5;
}

.browser-warning-box {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.45);
  color: #fecaca;
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.usb-step-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.usb-step-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.usb-step-pill.active {
  background: var(--accent-cyan-dim);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  font-weight: 700;
}

.usb-step-pill.done {
  background: var(--accent-green-dim);
  border-color: rgba(16, 185, 129, 0.5);
  color: #34d399;
}

.usb-mac-banner {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.14) 0%, rgba(0, 212, 255, 0.12) 100%);
  border: 1px solid rgba(16, 185, 129, 0.55);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.usb-mac-code {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: #ffffff;
  background: #090c10;
  border: 1px solid rgba(0, 212, 255, 0.45);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
}

.serial-terminal-wrap {
  background: #06090e;
  border: 1px solid #1e293b;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.serial-terminal-toolbar {
  background: #0d131d;
  border-bottom: 1px solid #1e293b;
  padding: 7px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.serial-terminal-output {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.45;
  color: #cbd5e1;
  padding: 10px 12px;
  height: 210px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.serial-sniff-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(16, 21, 30, 0.9);
  border-bottom: 1px solid #1e293b;
}

.badge-usb-ready {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.45);
}

.badge-ota-ready {
  background: rgba(0, 212, 255, 0.14);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 212, 255, 0.45);
}