/* ── IoT Dashboard Pro — Frontend CSS ─────────────────────────────────────── */

:root {
  --iotdb-bg:          #0d1117;
  --iotdb-surface:     #161b22;
  --iotdb-surface2:    #1c2333;
  --iotdb-border:      #30363d;
  --iotdb-text:        #e6edf3;
  --iotdb-muted:       #7d8590;
  --iotdb-green:       #22c55e;
  --iotdb-green-dim:   #16a34a20;
  --iotdb-red:         #ef4444;
  --iotdb-blue:        #3b82f6;
  --iotdb-yellow:      #f59e0b;
  --iotdb-radius:      10px;
  --iotdb-font:        'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --iotdb-sans:        -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --iotdb-shadow:      0 4px 24px rgba(0,0,0,.4);
  --iotdb-glow-green:  0 0 20px rgba(34,197,94,.35);
  --iotdb-glow-red:    0 0 20px rgba(239,68,68,.3);
}

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=Inter:wght@400;500;600&display=swap');

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

.iotdb-dashboard {
  background: var(--iotdb-bg);
  color: var(--iotdb-text);
  font-family: var(--iotdb-sans);
  border-radius: var(--iotdb-radius);
  overflow: hidden;
  border: 1px solid var(--iotdb-border);
  min-height: 600px;
  font-size: 14px;
}

/* ── Navigation ──────────────────────────────────────────────────────────── */
.iotdb-nav {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--iotdb-surface);
  border-bottom: 1px solid var(--iotdb-border);
  padding: 0 16px;
  height: 52px;
  flex-wrap: wrap;
}
.iotdb-nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  color: var(--iotdb-green);
  margin-right: 20px;
  white-space: nowrap;
  font-family: var(--iotdb-font);
  letter-spacing: -0.3px;
}
.iotdb-nav-tabs {
  display: flex;
  gap: 2px;
  flex: 1;
  overflow-x: auto;
}
.iotdb-tab {
  background: none;
  border: none;
  color: var(--iotdb-muted);
  cursor: pointer;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-family: var(--iotdb-sans);
  white-space: nowrap;
  transition: all .2s;
}
.iotdb-tab:hover { color: var(--iotdb-text); background: var(--iotdb-surface2); }
.iotdb-tab.active { color: var(--iotdb-green); background: var(--iotdb-green-dim); font-weight: 600; }

.iotdb-nav-actions { margin-left: auto; }
.iotdb-btn-icon {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--iotdb-green);
  color: #000;
  border: none;
  padding: 7px 14px;
  border-radius: 7px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all .2s;
}
.iotdb-btn-icon:hover { background: #16a34a; transform: translateY(-1px); }

/* ── Content ─────────────────────────────────────────────────────────────── */
.iotdb-content { padding: 24px; }

.iotdb-panel { display: none; }
.iotdb-panel.active { display: block; }

.iotdb-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.iotdb-panel-header h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--iotdb-text);
}
.iotdb-subtitle { color: var(--iotdb-muted); font-size: 13px; margin-left: 12px; }

/* ── Device Cards ─────────────────────────────────────────────────────────── */
.iotdb-devices-grid { display: flex; flex-direction: column; gap: 20px; }

.iotdb-device-card {
  background: var(--iotdb-surface);
  border: 1px solid var(--iotdb-border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color .2s;
}
.iotdb-device-card:hover { border-color: #4d5562; }

.iotdb-device-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--iotdb-border);
  background: var(--iotdb-surface2);
}
.iotdb-device-name {
  font-size: 16px;
  font-weight: 600;
}
.iotdb-device-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
}
.iotdb-uid {
  font-family: var(--iotdb-font);
  font-size: 11px;
  color: var(--iotdb-muted);
  background: #0d1117;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 1px;
}
.iotdb-type-badge {
  font-size: 10px;
  font-weight: 700;
  background: var(--iotdb-blue);
  color: #fff;
  padding: 1px 6px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}

.iotdb-device-status { display: flex; align-items: center; gap: 6px; font-size: 13px; }
.iotdb-online-dot {
  width: 9px; height: 9px; border-radius: 50%;
  animation: iotdb-pulse 2s infinite;
}
.iotdb-online-dot.online { background: var(--iotdb-green); box-shadow: 0 0 8px var(--iotdb-green); }
.iotdb-online-dot.offline { background: var(--iotdb-muted); animation: none; }

@keyframes iotdb-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ── Buttons Grid ─────────────────────────────────────────────────────────── */
.iotdb-buttons-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 8px 18px 14px;
}

/* Each relay row */
.iotdb-button-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 10px;
  border-radius: 0;
  border: none;
  border-bottom: 1px solid var(--iotdb-border);
  background: transparent;
  position: relative;
  transition: background .18s;
  cursor: default;
}
.iotdb-button-item:first-child { border-top: 1px solid var(--iotdb-border); }
.iotdb-button-item:hover { background: var(--iotdb-surface2); border-radius: 8px; }
.iotdb-button-item.on { background: rgba(34,197,94,0.05); }

/* Icon circle */
.iotdb-btn-icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--iotdb-border);
  background: var(--iotdb-surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--iotdb-muted);
  transition: all .25s;
}
.iotdb-button-item.on .iotdb-btn-icon-wrap {
  background: color-mix(in srgb, var(--btn-color, #22c55e) 15%, transparent);
  border-color: var(--btn-color, #22c55e);
  color: var(--btn-color, #22c55e);
  box-shadow: 0 0 10px color-mix(in srgb, var(--btn-color, #22c55e) 35%, transparent);
}

/* Label + pin */
.iotdb-btn-info { flex: 1; min-width: 0; }
.iotdb-btn-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--iotdb-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.iotdb-btn-pin {
  font-size: 11px;
  color: var(--iotdb-muted);
  font-family: var(--iotdb-font);
  margin-top: 2px;
}

/* State badge */
.iotdb-btn-state-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.8px;
  font-family: var(--iotdb-font);
  padding: 2px 9px;
  border-radius: 20px;
  background: var(--iotdb-surface2);
  color: var(--iotdb-muted);
  border: 1px solid var(--iotdb-border);
  transition: all .25s;
  white-space: nowrap;
}
.iotdb-button-item.on .iotdb-btn-state-badge {
  background: rgba(34,197,94,0.14);
  color: var(--iotdb-green);
  border-color: rgba(34,197,94,0.32);
}

/* ── Toggle switch ── */
.iotdb-toggle-btn {
  position: relative;
  width: 50px;
  height: 28px;
  border-radius: 14px;
  border: none;
  background: var(--iotdb-border);
  cursor: pointer;
  flex-shrink: 0;
  transition: background .25s;
  outline: none;
}
.iotdb-toggle-btn::after {
  content: '';
  position: absolute;
  top: 4px;
  left: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,.5);
  transition: transform .25s cubic-bezier(.4,0,.2,1);
}
.iotdb-button-item.on .iotdb-toggle-btn {
  background: var(--btn-color, var(--iotdb-green));
}
.iotdb-button-item.on .iotdb-toggle-btn::after {
  transform: translateX(22px);
}
.iotdb-toggle-btn:hover { opacity: .88; }
.iotdb-toggle-btn:focus-visible { box-shadow: 0 0 0 3px rgba(34,197,94,.4); }

/* Hide old elements not used in new layout */
.iotdb-btn-glow { display: none; }
.iotdb-btn-icon { display: block; }
.iotdb-btn-state { display: none; }

/* Delete button */
.iotdb-btn-delete {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: transparent;
  color: var(--iotdb-muted);
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all .15s;
  flex-shrink: 0;
}
.iotdb-button-item:hover .iotdb-btn-delete {
  opacity: 1;
  border-color: var(--iotdb-border);
  color: var(--iotdb-red);
}
.iotdb-btn-delete:hover { background: rgba(239,68,68,.15) !important; }

/* Add button row */
.iotdb-add-button-cell {
  padding: 10px 10px 2px;
}
.iotdb-add-btn-trigger {
  width: 100%;
  background: none;
  border: none;
  color: var(--iotdb-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  padding: 8px 0;
  transition: color .2s;
}
.iotdb-add-btn-trigger .add-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px dashed var(--iotdb-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  line-height: 1;
  transition: border-color .2s;
  flex-shrink: 0;
}
.iotdb-add-btn-trigger:hover { color: var(--iotdb-green); }
.iotdb-add-btn-trigger:hover .add-icon { border-color: var(--iotdb-green); }

/* ── Sensors ─────────────────────────────────────────────────────────────── */
.iotdb-sensor-controls {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.iotdb-sensor-controls select,
.iotdb-sensor-controls input {
  background: var(--iotdb-surface2);
  border: 1px solid var(--iotdb-border);
  color: var(--iotdb-text);
  padding: 7px 10px;
  border-radius: 6px;
  font-size: 13px;
  min-width: 160px;
}

.iotdb-sensor-latest {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}
.iotdb-sensor-card {
  background: var(--iotdb-surface);
  border: 1px solid var(--iotdb-border);
  border-radius: 10px;
  padding: 16px 20px;
  min-width: 140px;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s;
}
.iotdb-sensor-card:hover { border-color: var(--iotdb-blue); }
.iotdb-sensor-card.active { border-color: var(--iotdb-blue); background: rgba(59,130,246,.08); }
.iotdb-sensor-val { font-size: 28px; font-weight: 700; font-family: var(--iotdb-font); color: var(--iotdb-blue); }
.iotdb-sensor-unit { font-size: 13px; color: var(--iotdb-muted); }
.iotdb-sensor-field { font-size: 12px; color: var(--iotdb-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.5px; }

.iotdb-charts-area { display: flex; flex-direction: column; gap: 24px; }
.iotdb-chart-wrap {
  background: var(--iotdb-surface);
  border: 1px solid var(--iotdb-border);
  border-radius: 10px;
  padding: 20px;
}
.iotdb-chart-title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--iotdb-muted);
  margin-bottom: 12px;
}
.iotdb-chart-wrap canvas { max-height: 260px; }

/* ── Schedules ───────────────────────────────────────────────────────────── */
.iotdb-schedules-list { display: flex; flex-direction: column; gap: 10px; }
.iotdb-schedule-row {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--iotdb-surface);
  border: 1px solid var(--iotdb-border);
  border-radius: 8px;
  padding: 14px 18px;
}
.iotdb-schedule-row.inactive { opacity: 0.5; }
.sched-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}
.sched-badge.time { background: rgba(245,158,11,.15); color: var(--iotdb-yellow); }
.sched-badge.threshold { background: rgba(59,130,246,.15); color: var(--iotdb-blue); }
.sched-info { flex: 1; }
.sched-label { font-weight: 600; margin-bottom: 2px; }
.sched-detail { font-size: 12px; color: var(--iotdb-muted); font-family: var(--iotdb-font); }
.sched-actions { display: flex; gap: 8px; }

/* ── API Keys ─────────────────────────────────────────────────────────────── */
.iotdb-keys-info {
  background: var(--iotdb-surface2);
  border: 1px solid var(--iotdb-border);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 13px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.iotdb-keys-info code {
  background: var(--iotdb-bg);
  padding: 3px 8px;
  border-radius: 4px;
  font-family: var(--iotdb-font);
  font-size: 12px;
}
.iotdb-keys-list { display: flex; flex-direction: column; gap: 10px; }
.iotdb-key-row {
  background: var(--iotdb-surface);
  border: 1px solid var(--iotdb-border);
  border-radius: 8px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.iotdb-key-row.revoked { opacity: 0.5; }
.key-info { flex: 1; min-width: 200px; }
.key-info strong { display: block; margin-bottom: 6px; }
.key-value {
  font-family: var(--iotdb-font);
  font-size: 12px;
  background: var(--iotdb-bg);
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--iotdb-green);
  word-break: break-all;
  display: block;
}
.key-meta { display: flex; gap: 12px; font-size: 12px; color: var(--iotdb-muted); flex-wrap: wrap; align-items: center; }
.badge-active { color: var(--iotdb-green); font-weight: 600; }
.badge-revoked { color: var(--iotdb-red); }
.key-actions { display: flex; gap: 8px; }

/* ── Activity Log ─────────────────────────────────────────────────────────── */
.iotdb-activity-log { display: flex; flex-direction: column; gap: 4px; }
.iotdb-log-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--iotdb-surface);
  border-radius: 6px;
  font-size: 13px;
}
.log-time { font-family: var(--iotdb-font); font-size: 11px; color: var(--iotdb-muted); min-width: 120px; }
.log-event { background: var(--iotdb-surface2); padding: 2px 6px; border-radius: 4px; font-family: var(--iotdb-font); font-size: 11px; color: var(--iotdb-blue); }
.log-device { color: var(--iotdb-muted); font-size: 12px; }
.log-detail { color: var(--iotdb-text); flex: 1; }

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.iotdb-btn-primary {
  background: var(--iotdb-green);
  color: #000;
  border: none;
  padding: 8px 16px;
  border-radius: 7px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all .2s;
  white-space: nowrap;
}
.iotdb-btn-primary:hover { background: #16a34a; transform: translateY(-1px); }
.iotdb-btn-secondary {
  background: var(--iotdb-surface2);
  color: var(--iotdb-text);
  border: 1px solid var(--iotdb-border);
  padding: 8px 16px;
  border-radius: 7px;
  cursor: pointer;
  font-size: 13px;
  transition: all .2s;
}
.iotdb-btn-secondary:hover { border-color: var(--iotdb-text); }
.iotdb-btn-sm {
  padding: 5px 10px;
  font-size: 12px;
  border-radius: 5px;
  border: 1px solid var(--iotdb-border);
  background: var(--iotdb-surface2);
  color: var(--iotdb-text);
  cursor: pointer;
  transition: all .15s;
}
.iotdb-btn-sm:hover { border-color: var(--iotdb-text); }
.iotdb-btn-danger { border-color: var(--iotdb-red); color: var(--iotdb-red); }
.iotdb-btn-danger:hover { background: rgba(239,68,68,.1); }

/* Warning button style */
.iotdb-btn-warning {
  background: transparent;
  color: var(--iotdb-yellow);
  border: 1px solid var(--iotdb-yellow);
  padding: 8px 16px;
  border-radius: 7px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all .2s;
  white-space: nowrap;
}
.iotdb-btn-warning:hover { background: rgba(245,158,11,.1); }

/* ── Device delete button ── */
.iotdb-device-status { display: flex; align-items: center; gap: 10px; }
.iotdb-device-delete-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--iotdb-muted);
  font-size: 12px;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  opacity: 0;
  transition: all .2s;
  white-space: nowrap;
}
.iotdb-device-card:hover .iotdb-device-delete-btn {
  opacity: 1;
  border-color: var(--iotdb-border);
}
.iotdb-device-delete-btn:hover {
  color: var(--iotdb-red) !important;
  border-color: var(--iotdb-red) !important;
  background: rgba(239,68,68,.08) !important;
}

/* ── Activity actions row ── */
.iotdb-activity-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.iotdb-cache-notice {
  background: rgba(245,158,11,.08);
  border: 1px solid rgba(245,158,11,.25);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 12px;
  color: var(--iotdb-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}
.iotdb-cache-notice strong { color: var(--iotdb-yellow); }

/* ── Modals ──────────────────────────────────────────────────────────────── */
.iotdb-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.65);
  backdrop-filter: blur(4px);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.iotdb-modal-overlay.open { display: flex; }
.iotdb-modal {
  background: var(--iotdb-surface);
  border: 1px solid var(--iotdb-border);
  border-radius: 14px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--iotdb-shadow);
  animation: iotdb-modal-in .2s ease;
}
.iotdb-modal-wide { max-width: 560px; }
@keyframes iotdb-modal-in {
  from { opacity: 0; transform: translateY(-12px) scale(.97); }
  to   { opacity: 1; transform: none; }
}
.iotdb-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--iotdb-border);
}
.iotdb-modal-header h3 { font-size: 16px; font-weight: 600; }
.iotdb-modal-close {
  background: none;
  border: none;
  color: var(--iotdb-muted);
  font-size: 18px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  transition: color .15s;
}
.iotdb-modal-close:hover { color: var(--iotdb-text); }
.iotdb-modal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.iotdb-modal-body label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--iotdb-text);
}
.iotdb-modal-body input[type=text],
.iotdb-modal-body input[type=number],
.iotdb-modal-body select,
.iotdb-modal-body textarea {
  background: var(--iotdb-bg);
  border: 1px solid var(--iotdb-border);
  color: var(--iotdb-text);
  padding: 9px 12px;
  border-radius: 7px;
  font-size: 14px;
  font-family: var(--iotdb-sans);
  transition: border-color .15s;
  width: 100%;
}
.iotdb-modal-body input:focus,
.iotdb-modal-body select:focus {
  outline: none;
  border-color: var(--iotdb-green);
}
.iotdb-modal-body small { color: var(--iotdb-muted); font-size: 11px; line-height: 1.5; }
.iotdb-modal-body code { background: var(--iotdb-bg); padding: 1px 5px; border-radius: 3px; font-family: var(--iotdb-font); }
.iotdb-modal-notice {
  background: rgba(59,130,246,.1);
  border: 1px solid rgba(59,130,246,.25);
  border-radius: 7px;
  padding: 10px 14px;
  font-size: 13px;
  color: #93c5fd;
}
.iotdb-modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 20px;
  border-top: 1px solid var(--iotdb-border);
}

/* ── Copy row ─────────────────────────────────────────────────────────────── */
.iotdb-copy-row {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--iotdb-bg);
  border: 1px solid var(--iotdb-border);
  border-radius: 7px;
  padding: 8px 12px;
}
.iotdb-copy-row code {
  flex: 1;
  font-family: var(--iotdb-font);
  font-size: 12px;
  color: var(--iotdb-green);
  word-break: break-all;
  background: none;
  padding: 0;
}
.iotdb-copy-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 15px;
  padding: 2px;
  border-radius: 4px;
  transition: transform .15s;
}
.iotdb-copy-btn:hover { transform: scale(1.2); }
.iotdb-copy-key, .iotdb-revoke-key {
  background: none;
  border: 1px solid var(--iotdb-border);
  color: var(--iotdb-text);
  padding: 5px 10px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 12px;
  transition: all .15s;
}
.iotdb-copy-key:hover { border-color: var(--iotdb-blue); color: var(--iotdb-blue); }
.iotdb-revoke-key { color: var(--iotdb-red); border-color: var(--iotdb-red); }
.iotdb-revoke-key:hover { background: rgba(239,68,68,.1); }

/* ── Empty state ─────────────────────────────────────────────────────────── */
.iotdb-empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--iotdb-muted);
}
.iotdb-empty-icon { font-size: 48px; margin-bottom: 12px; }
.iotdb-empty h3 { font-size: 18px; color: var(--iotdb-text); margin-bottom: 8px; }
.iotdb-loading { text-align: center; padding: 32px; color: var(--iotdb-muted); font-size: 14px; }
.iotdb-notice {
  padding: 16px;
  background: var(--iotdb-surface);
  border: 1px solid var(--iotdb-border);
  border-radius: 8px;
  text-align: center;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .iotdb-nav { height: auto; padding: 10px 12px; gap: 8px; }
  .iotdb-nav-brand { font-size: 13px; }
  .iotdb-tab { font-size: 11px; padding: 5px 10px; }
  .iotdb-content { padding: 16px; }
  .iotdb-toggle-btn { width: 70px; height: 70px; }
  .iotdb-add-btn-trigger { width: 70px; height: 70px; }
  .iotdb-key-row { flex-direction: column; align-items: flex-start; }
}