/* Navbar Header */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
  z-index: 50;
  font-family: var(--font-sans);
  gap: 6px;
  box-sizing: border-box;
}

.nav-row {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.nav-center {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.btn-nav-home {
  text-decoration: none;
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  color: var(--color-ink);
  transition: all 0.15s ease;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.btn-nav-home:hover {
  background: var(--color-canvas-soft);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--color-ink);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.3px;
  margin-right: 4px;
}

.brand-badge {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-size: 9px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
}

.nav-divider {
  width: 1px;
  height: 18px;
  background: var(--color-hairline);
  margin: 0 2px;
}

/* Tool Buttons & Groups */
.btn-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-hairline);
  background: var(--color-canvas);
  color: var(--color-body);
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.btn-icon:hover {
  background: var(--color-canvas-soft);
  border-color: var(--color-hairline-strong);
  color: var(--color-ink);
}

.btn-icon[aria-pressed="true"], .btn-icon.active {
  background: var(--color-primary) !important;
  color: var(--color-on-primary) !important;
  border-color: var(--color-primary) !important;
}

.unit-toggle-group {
  display: flex;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-sm);
  overflow: hidden;
  height: 28px;
  flex-shrink: 0;
}

.unit-toggle-btn {
  padding: 0 7px;
  font-size: 11px;
  font-weight: 600;
  background: var(--color-canvas);
  color: var(--color-body);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: var(--font-mono);
}

.unit-toggle-btn:not(:last-child) {
  border-right: 1px solid var(--color-hairline);
}

.unit-toggle-btn:hover {
  background: var(--color-canvas-soft);
  color: var(--color-ink);
}

.unit-toggle-btn.active {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.btn-pill {
  height: 28px;
  padding: 0 8px;
  display: flex;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-hairline);
  background: var(--color-canvas);
  color: var(--color-ink);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-pill:hover {
  background: var(--color-canvas-soft);
  border-color: var(--color-hairline-strong);
}

.btn-pill-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
}

.btn-pill-primary:hover {
  background: var(--color-primary-hover);
}

#theme-selector {
  height: 28px !important;
  font-size: 11px !important;
  padding: 0 4px !important;
  flex-shrink: 0;
}

@media (max-width: 1280px) {
  .btn-pill:not(#btn-fullscreen) span {
    display: none;
  }
  .btn-pill:not(#btn-fullscreen) {
    padding: 0 6px;
  }
}

@media (max-width: 820px) {
  #navbar {
    height: auto;
    flex-direction: column;
    padding: 4px 6px;
    gap: 4px;
  }
  .nav-row {
    width: 100%;
    justify-content: space-between;
  }
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
}

.modal-card {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: -0.3px;
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--color-hairline);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* Tabs */
.tabs-nav {
  display: flex;
  gap: 4px;
  background: var(--color-canvas-soft-2);
  padding: 4px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.tab-btn {
  flex: 1;
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--color-body);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  color: var(--color-ink);
}

.tab-btn.active {
  background: var(--color-canvas);
  color: var(--color-ink);
  box-shadow: var(--shadow-sm);
}

/* Calibration Card Preview */
#card-preview-bezel {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translate(50%, -50%);
  background: var(--color-canvas-soft-2);
  border: 2px dashed var(--color-accent);
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  box-shadow: var(--shadow-xl);
  z-index: 120;
  display: none;
  pointer-events: none;
  align-items: center;
  justify-content: flex-start;
}

/* Form Controls */
.input-control {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  color: var(--color-ink);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

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

.range-control {
  width: 100%;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* Zoom Warning Banner */
.zoom-warning-banner {
  position: fixed;
  top: 48px;
  left: 0;
  right: 0;
  background: #dc2626;
  color: #ffffff;
  font-size: 12px;
  font-weight: 500;
  padding: 6px 16px;
  z-index: 45;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  font-family: var(--font-sans);
}

.zoom-warning-banner kbd {
  background: rgba(255, 255, 255, 0.25);
  padding: 1px 5px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-weight: 600;
}

.zoom-dismiss-btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: #fff;
  border-radius: 4px;
  padding: 2px 8px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 600;
  transition: background 0.15s;
}

.zoom-dismiss-btn:hover {
  background: rgba(255, 255, 255, 0.35);
}

.quick-chip:hover {
  background: var(--color-canvas-soft-2) !important;
  border-color: var(--color-accent) !important;
}