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

:root {
  --bg-primary:   #f4f6f8;
  --bg-card:      #ffffff;
  --bg-card-hover:#f0f2f5;
  --bg-input:     #ffffff;
  --border:       #dce1e8;
  --border-light: #c5cdd8;
  --text-primary: #1a2332;
  --text-muted:   #6b7a90;
  --accent:       #0a9b80;
  --accent-dim:   #088a71;
  --danger:       #d63b5e;
  --danger-dim:   #b82e4a;
  --warning:      #d98b0a;
  --success:      #0a9b80;
  --font-mono:    'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --font-sans:    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius:       8px;
  --radius-sm:    4px;
  --transition:   180ms ease;
}

html { font-size: 15px; }

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ─── Header ───────────────────────────────────────────────────────── */
header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.8rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-icon {
  font-size: 1.5rem;
  color: var(--accent);
}

.logo h1 {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--text-primary);
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.badge {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

/* ─── Main ──────────────────────────────────────────────────────── */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

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

.toolbar h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-family: var(--font-mono);
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ─── Dropdowns ────────────────────────────────────────────────── */
.dropdown {
  position: relative;
}

.dropdown-panel {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  z-index: 200;
  min-width: 240px;
  padding: 0.8rem;
}

.dropdown.open .dropdown-panel {
  display: block;
}

.dropdown-form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.dropdown-form input,
.dropdown-form select {
  width: 100%;
  padding: 0.5rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  outline: none;
  transition: border-color var(--transition);
}

.dropdown-form input:focus,
.dropdown-form select:focus {
  border-color: var(--accent);
}

.dropdown-form input::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-accent:hover:not(:disabled) {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  color: #fff;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.3; }
}

/* ─── Map ───────────────────────────────────────────────────────── */
.map-container {
  width: 100%;
  height: 340px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
  background: var(--bg-card);
}

.map-marker {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid rgba(0,0,0,0.15);
}
.map-marker:hover { box-shadow: 0 0 0 4px rgba(0,0,0,0.12); }
.map-marker.online  { background: var(--success); box-shadow: 0 0 8px var(--success); }
.map-marker.offline { background: var(--danger);  box-shadow: 0 0 6px var(--danger); }

.mapboxgl-popup-content {
  background: var(--bg-card) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-light) !important;
  border-radius: var(--radius-sm) !important;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.6rem 0.8rem !important;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1) !important;
}
.mapboxgl-popup-tip { border-top-color: var(--bg-card) !important; }
.mapboxgl-popup-close-button { color: var(--text-muted) !important; font-size: 1rem; }

/* ─── Units Grid ────────────────────────────────────────────────── */
.units-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 0.65rem;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* ─── Unit Card ─────────────────────────────────────────────────── */
.unit-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  transition: border-color var(--transition), box-shadow var(--transition);
  overflow: hidden;
}

.unit-card:hover {
  border-color: var(--border-light);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.unit-card-header {
  padding: 0.55rem 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  user-select: none;
  min-height: 0;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot.online  { background: var(--success); box-shadow: 0 0 5px var(--success); }
.status-dot.offline { background: var(--danger);  box-shadow: 0 0 5px var(--danger); }

.unit-id {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.82rem;
  white-space: nowrap;
}

.unit-meta-spacer {
  flex: 1;
}

.unit-meta-item {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.unit-status-badge {
  display: inline-block;
  padding: 0.05rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}

.unit-status-badge.idle          { background: rgba(10,155,128,0.1); color: var(--accent); }
.unit-status-badge.northfinding  { background: rgba(217,139,10,0.1); color: var(--warning); }
.unit-status-badge.error         { background: rgba(214,59,94,0.1); color: var(--danger); }
.unit-status-badge.unknown       { background: rgba(107,122,144,0.1); color: var(--text-muted); }

/* ─── Client tag ─────────────────────────────────────────────────── */
.client-tag {
  display: inline-block;
  padding: 0.05rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.62rem;
  font-family: var(--font-mono);
  font-weight: 500;
  background: rgba(10,155,128,0.1);
  color: var(--accent);
  border: 1px solid rgba(10,155,128,0.2);
  white-space: nowrap;
  flex-shrink: 0;
}

.client-tag.unassigned {
  background: rgba(107,122,144,0.08);
  color: var(--text-muted);
  border-color: rgba(107,122,144,0.15);
}

/* ─── Connect button ─────────────────────────────────────────────── */
.btn-connect {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-connect:hover {
  background: var(--accent);
  color: #fff;
}

.btn-connect.active {
  background: var(--text-muted);
  border-color: var(--text-muted);
  color: #fff;
}

.btn-connect.active:hover {
  background: var(--danger);
  border-color: var(--danger);
}

/* ─── Quick stats row (always visible below header) ───────────── */
.unit-quick-stats {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0 0.8rem 0.45rem;
  flex-wrap: wrap;
}

.qs-item {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.qs-label {
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  opacity: 0.6;
  margin-right: 0.15rem;
}

.qs-heading {
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--text-primary);
}

.qs-gyro.ok { color: var(--success); }
.qs-gyro.warn { color: var(--warning); }

.qs-motion {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--warning);
  background: rgba(217,139,10,0.1);
  padding: 0.05rem 0.35rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(217,139,10,0.25);
}

/* ─── Detail sections (expanded body) ─────────────────────────── */
.detail-section {
  margin-bottom: 0.6rem;
}

.detail-section-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  opacity: 0.7;
  margin-top: 0.6rem;
  margin-bottom: 0.2rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

/* ─── Test running card state ──────────────────────────────────── */
.unit-card.testing {
  border-color: var(--warning);
  box-shadow: 0 0 0 1px var(--warning), 0 2px 8px rgba(217,139,10,0.12);
}

/* ─── Progress bar (shown on card when test is active) ─────────── */
.unit-progress {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.8rem 0.45rem;
  background: rgba(217,139,10,0.04);
  border-top: 1px solid rgba(217,139,10,0.15);
}

.unit-progress-pct {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--warning);
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 2.2rem;
  text-align: right;
}

.unit-progress-track {
  flex: 1;
  height: 4px;
  background: rgba(217,139,10,0.15);
  border-radius: 2px;
  overflow: hidden;
}

.unit-progress-fill {
  height: 100%;
  background: var(--warning);
  border-radius: 2px;
  min-width: 2px;
}

/* ─── Card Detail / Expanded ────────────────────────────────────── */
.unit-card-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 350ms ease;
}

.unit-card.expanded .unit-card-body {
  max-height: 1200px;
  overflow-y: auto;
}

.unit-card-body-inner {
  padding: 0 0.8rem 0.8rem;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  padding: 0.25rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.78rem;
}

.detail-row:last-of-type {
  border-bottom: none;
}

.detail-label {
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.detail-value {
  font-family: var(--font-mono);
  font-weight: 500;
}

.command-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

/* ─── Commands section ──────────────────────────────────────────── */
.commands-section {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 0.8rem;
}

.commands-title {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.5rem;
}

.btn-cmd {
  min-width: auto;
  padding: 0.4rem 0.8rem;
  font-size: 0.75rem;
}

.btn-cmd.btn-disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

/* ─── Snapshots section ─────────────────────────────────────────── */
.snapshots-section {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 0.8rem;
}

.snapshots-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.5rem;
}

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

.snapshots-table .snap-cb {
  width: 15px;
  height: 15px;
  cursor: pointer;
  accent-color: var(--accent);
}

.snapshots-loading {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.5rem 0;
}

.btn-small {
  padding: 0.25rem 0.6rem;
  font-size: 0.72rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-family: var(--font-mono);
  transition: background var(--transition);
}

.btn-small:hover {
  background: var(--bg-card-hover);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-accent:hover {
  opacity: 0.85;
}

/* ─── Settings table (in expanded card) ────────────────────────── */
.settings-section {
  margin-top: 0.6rem;
}

.settings-table-wrap {
  max-height: 240px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.settings-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.72rem;
}

.settings-table th {
  text-align: left;
  padding: 0.3rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-muted);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  position: sticky;
  top: 0;
}

.settings-table td {
  padding: 0.2rem 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.7rem;
}

.settings-table tr:last-child td {
  border-bottom: none;
}

.settings-table .setting-default {
  color: var(--text-muted);
  opacity: 0.6;
}

.settings-table tr.setting-changed td {
  background: rgba(217,139,10,0.05);
}

.settings-table tr.setting-changed td:nth-child(2) {
  color: var(--warning);
  font-weight: 600;
}

/* ─── Buttons ───────────────────────────────────────────────────── */
.btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  position: relative;
  min-width: 130px;
  justify-content: center;
}

.btn:hover:not(:disabled) {
  background: var(--bg-card-hover);
  border-color: var(--accent);
  color: var(--accent);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.btn.loading {
  color: var(--warning);
  border-color: var(--warning);
}

.btn.success {
  color: var(--success);
  border-color: var(--success);
  background: rgba(10,155,128,0.08);
}

.btn.error {
  color: var(--danger);
  border-color: var(--danger);
  background: rgba(214,59,94,0.08);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
  width: 100%;
  padding: 0.7rem;
  font-size: 0.88rem;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  color: var(--bg-primary);
}

.btn-small {
  min-width: auto;
  padding: 0.25rem 0.7rem;
  font-size: 0.72rem;
}

.btn-logout {
  border-color: var(--border);
  color: var(--text-muted);
}
.btn-logout:hover:not(:disabled) {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(214,59,94,0.08);
}

.spinner {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* ─── Login Page ────────────────────────────────────────────────── */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
}

.login-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 0.25rem;
}

.login-logo h1 {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.login-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  margin-bottom: 2rem;
}

.form-group {
  margin-bottom: 1.2rem;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.4rem;
}

.form-group input {
  width: 100%;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus {
  border-color: var(--accent);
}

.form-group input::placeholder {
  color: var(--text-muted);
  opacity: 0.5;
}

.login-error {
  background: rgba(214,59,94,0.07);
  border: 1px solid var(--danger);
  border-radius: var(--radius-sm);
  color: var(--danger);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.5rem 0.8rem;
  margin-bottom: 1rem;
}

/* ─── Pending command indicator ─────────────────────────────────── */
.pending-tag {
  font-size: 0.62rem;
  color: var(--warning);
  font-family: var(--font-mono);
  border: 1px solid rgba(217,139,10,0.3);
  padding: 0.05rem 0.35rem;
  border-radius: var(--radius-sm);
  animation: pulse 1.5s infinite;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ─── Toast Notifications ───────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 999;
  pointer-events: none;
}

.toast {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,0.1);
  color: var(--text-primary);
  animation: toastIn 250ms ease, toastOut 250ms ease 2.5s forwards;
  pointer-events: auto;
}

.toast.toast-success { border-color: var(--success); color: var(--success); }
.toast.toast-error   { border-color: var(--danger);  color: var(--danger); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
  from { opacity: 1; }
  to   { opacity: 0; transform: translateY(-10px); }
}

/* ─── Data Tables ──────────────────────────────────────────────── */
.table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.data-table th {
  text-align: left;
  padding: 0.7rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}

.data-table td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.clickable-row {
  cursor: pointer;
  transition: background var(--transition);
}

.clickable-row:hover {
  background: var(--bg-card-hover);
}

.mono-cell {
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.bold-cell {
  font-weight: 600;
}

.table-arrow {
  font-size: 1.3rem;
  color: var(--text-muted);
  line-height: 1;
}

.status-dot-inline {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.4rem;
  vertical-align: middle;
}

.status-dot-inline.online  { background: var(--success); }
.status-dot-inline.offline { background: var(--danger); }

/* ─── Client status badge ──────────────────────────────────────── */
.client-status-badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.client-status-badge.active    { background: rgba(10,155,128,0.1); color: var(--accent); }
.client-status-badge.inactive  { background: rgba(107,122,144,0.1); color: var(--text-muted); }
.client-status-badge.suspended { background: rgba(214,59,94,0.1); color: var(--danger); }

/* ─── Back link ────────────────────────────────────────────────── */
.back-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 1.2rem;
  margin-right: 0.3rem;
  transition: color var(--transition);
}

.back-link:hover {
  color: var(--accent);
}

/* ─── Stats row ────────────────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 0.2rem;
}

/* ─── Tabs ─────────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.5rem;
}

.tab {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.7rem 1.2rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

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

.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ─── Overview grid ────────────────────────────────────────────── */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.card-title {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1rem;
}

.danger-title {
  color: var(--danger);
}

.card-divider {
  border-top: 1px solid var(--border);
  margin: 1.2rem 0;
}

.field-group {
  margin-bottom: 0.8rem;
}

.field-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.3rem;
}

.field-group input,
.field-group select {
  width: 100%;
  padding: 0.5rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  outline: none;
  transition: border-color var(--transition);
}

.field-group input:focus,
.field-group select:focus {
  border-color: var(--accent);
}

.notes-area {
  width: 100%;
  min-height: 120px;
  padding: 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.84rem;
  outline: none;
  resize: vertical;
  transition: border-color var(--transition);
}

.notes-area:focus {
  border-color: var(--accent);
}

.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.btn-danger:hover:not(:disabled) {
  background: var(--danger-dim);
  border-color: var(--danger-dim);
  color: #fff;
}

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

.btn-danger-outline:hover:not(:disabled) {
  background: rgba(214,59,94,0.08);
  color: var(--danger);
}

.inline-select {
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  outline: none;
  min-width: 180px;
}

/* ─── Messages ─────────────────────────────────────────────────── */
.messages-card {
  display: flex;
  flex-direction: column;
  max-height: 500px;
}

.messages-thread {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.message-bubble {
  max-width: 75%;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius);
  font-size: 0.84rem;
  line-height: 1.5;
}

.msg-admin {
  background: rgba(10,155,128,0.08);
  border: 1px solid rgba(10,155,128,0.15);
  align-self: flex-end;
}

.msg-client {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  align-self: flex-start;
}

.msg-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.msg-content {
  color: var(--text-primary);
}

.message-compose {
  display: flex;
  gap: 0.5rem;
  padding: 0.8rem 1rem;
  border-top: 1px solid var(--border);
}

.message-compose input {
  flex: 1;
  padding: 0.5rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.84rem;
  outline: none;
}

.message-compose input:focus {
  border-color: var(--accent);
}

/* ─── Activity feed ────────────────────────────────────────────── */
.activity-feed {
  max-height: 500px;
  overflow-y: auto;
}

.activity-item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-icon {
  font-size: 0.9rem;
  flex-shrink: 0;
  width: 1.4rem;
  text-align: center;
  margin-top: 0.1rem;
}

.activity-body {
  flex: 1;
  min-width: 0;
}

.activity-action {
  font-weight: 600;
}

.activity-details {
  color: var(--text-muted);
}

.activity-unit {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.05rem 0.4rem;
  margin-left: 0.4rem;
  vertical-align: middle;
}

.activity-time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ─── Scrollbar ─────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }

/* ─── Responsive ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .overview-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .data-table { font-size: 0.78rem; }
  .data-table th, .data-table td { padding: 0.5rem 0.6rem; }
}

@media (max-width: 640px) {
  html { font-size: 14px; }
  .header-inner { padding: 0.6rem 1rem; }
  main { padding: 0.75rem; }
  .map-container { height: 220px; }
  .units-grid { grid-template-columns: minmax(0, 1fr); gap: 0.5rem; }
  .toolbar { flex-wrap: wrap; gap: 0.5rem; }
  .toolbar-right { flex-wrap: wrap; }

  .unit-card-header {
    flex-wrap: wrap;
    gap: 0.35rem;
    padding: 0.5rem 0.65rem;
  }

  .unit-meta-spacer { flex-basis: 100%; height: 0; }

  .unit-meta-item { font-size: 0.64rem; }

  .btn-connect { font-size: 0.64rem; padding: 0.15rem 0.5rem; }

  .unit-quick-stats { padding: 0 0.65rem 0.35rem; gap: 0.4rem; }
  .qs-item { font-size: 0.62rem; }
  .qs-heading { font-size: 0.7rem; }
  .qs-label { font-size: 0.54rem; }

  .unit-progress { padding: 0.25rem 0.65rem 0.35rem; }
  .unit-progress-pct { font-size: 0.64rem; }

  .command-buttons { flex-direction: column; }
  .btn-cmd { width: 100%; }
  .dropdown-panel { right: auto; left: 0; }
  .quick-actions { flex-direction: column; }

  .tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .tab { white-space: nowrap; font-size: 0.75rem; padding: 0.6rem 0.8rem; }
}

@media (max-width: 400px) {
  .logo h1 { font-size: 1rem; }
  #clock { display: none; }
  .login-card { padding: 2rem 1.5rem; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .unit-id { font-size: 0.75rem; }
  .unit-status-badge { font-size: 0.58rem; padding: 0.04rem 0.3rem; }
  .client-tag { font-size: 0.58rem; padding: 0.04rem 0.3rem; }
}