body {
  --text-muted: color-mix(in srgb, var(--muted) 70%, var(--text));
  --link: var(--purple);
  --quiet: color-mix(in srgb, var(--muted) 45%, transparent);

  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --gutter: 20px;
  --card-pad: 14px;

  --r-control: 6px;
  --r-action: 8px;
  --r-phone: 10px;
  --r-card: 12px;
  --r-sheet: 16px;
  --r-chip: 999px;

  --fs-chip: 11px;
  --fs-meta: 12.5px;
  --fs-btn: 13px;
  --fs-body: 14px;
  --fs-num: 15px;
  --fs-num-lg: 16px;
  --fs-carrier: 17px;
  --fs-pane-title: 18px;
  --fs-section: 22px;
  --fs-table-door: 26px;
  --fs-card-door: 32px;
  --fs-pane-door: 44px;

  --e1: 0 1px 0 rgba(0, 0, 0, 0.4);
  --e2: 0 8px 24px rgba(0, 0, 0, 0.45);
  --e3: 0 16px 48px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--border-strong);
  --btn-h: 34px;
  --btn-h-sm: 30px;
  --btn-h-phone: 48px;
  --icon-btn-size: 32px;
}

body.light-mode {
  --focus-ring: var(--accent2);
  --e1: 0 1px 2px rgba(15, 23, 42, 0.06);
  --e2: 0 8px 24px rgba(15, 23, 42, 0.12);
  --e3: 0 16px 48px rgba(15, 23, 42, 0.28), 0 2px 6px rgba(15, 23, 42, 0.12);
  --gutter-phone: 12px;
}

body.light-mode[data-theme="sky"],
body.light-mode[data-theme="mint"] {
  --focus-ring: var(--accent);
}

body.light-mode[data-theme="lavender"],
body.light-mode[data-theme="rose"],
body.light-mode[data-theme="light-ocean"],
body.light-mode[data-theme="light-terminal"],
body.light-mode[data-theme="light-forest"],
body.light-mode[data-theme="light-copper"],
body.light-mode[data-theme="sky"],
body.light-mode[data-theme="mint"],
body.light-mode[data-theme="sand"] {
  --link: var(--text);
}

@media (max-width: 768px) {
  body { --gutter: 12px; }
}

:focus-visible:not(.door-tile) {
  outline: 2px solid var(--focus-ring) !important;
  outline-offset: 2px;
}
body.light-mode :focus-visible:not(.door-tile) {
  outline: 2px solid var(--focus-ring) !important;
  outline-offset: 2px !important;
}

.form-group label,
.po-fields-help,
.theme-section-hint,
.settings-section-hint,
.filter-label,
.export-opt .e-info .e-desc,
.mobile-status-next-label {
  color: var(--text-muted);
}

.btn {
  min-height: var(--btn-h);
  border-radius: var(--r-control);
  font-size: var(--fs-btn);
  font-weight: 600;
  box-shadow: none;
}
.btn-sm {
  min-height: var(--btn-h-sm);
  padding: 4px 10px;
}
.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  border: 1px solid var(--accent);
  font-weight: 800;
}
.btn-primary:hover:not(:disabled) {
  background: color-mix(in srgb, var(--accent) 92%, var(--text));
  border-color: color-mix(in srgb, var(--accent) 92%, var(--text));
  box-shadow: none;
}
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover:not(:disabled) {
  background: color-mix(in srgb, var(--surface) 92%, var(--text));
  color: var(--text);
  border-color: var(--border);
}
.btn-danger {
  background: transparent;
  color: var(--red);
  border: 1px solid var(--red);
}
.btn-danger:hover:not(:disabled) {
  background: color-mix(in srgb, transparent 92%, var(--text));
  color: var(--red);
}
.btn-success {
  background: var(--green);
  color: var(--on-accent);
  border: 1px solid var(--green);
}
.btn-success:hover:not(:disabled) {
  background: color-mix(in srgb, var(--green) 92%, var(--text));
  box-shadow: none;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-control);
  min-height: var(--btn-h);
}
.btn-ghost:hover:not(:disabled) {
  background: color-mix(in srgb, transparent 92%, var(--text));
  color: var(--text);
  border-color: var(--border);
}
.btn-link {
  background: transparent;
  color: var(--link);
  border: none;
  text-decoration: underline;
  font-weight: 600;
  font-size: var(--fs-btn);
  min-height: var(--btn-h);
  padding: 0 var(--sp-2);
  cursor: pointer;
}
.btn:disabled,
.btn-ghost:disabled,
.icon-btn:disabled,
.filter-chip:disabled,
.filter-chip[aria-disabled="true"],
.form-group input:disabled,
.form-group select:disabled,
.form-group textarea:disabled {
  background: var(--surface2);
  color: var(--text-muted);
  border: 1px solid var(--border);
  cursor: not-allowed;
  opacity: 1;
  box-shadow: none;
}

.mobile-status-action-btn {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: none;
  letter-spacing: 0.3px;
}
.btn-xs {
  min-height: 0;
  font-size: 0.74rem;
}

.icon-btn {
  width: var(--icon-btn-size);
  height: var(--icon-btn-size);
  border-radius: var(--r-control);
}
.icon-btn:hover:not(:disabled):not(.del) {
  background: color-mix(in srgb, transparent 92%, var(--text));
  color: var(--text);
  border-color: var(--border);
}

body.light-mode .btn-secondary:hover:not(:disabled),
body.light-mode .icon-btn:hover:not(:disabled):not(.del),
body.light-mode .filter-chip:hover:not(.active):not(:disabled) {
  background: color-mix(in srgb, var(--surface) 92%, var(--text)) !important;
  color: var(--text) !important;
  border-color: var(--border) !important;
}

.filter-chip {
  border-radius: var(--r-control);
}
.filter-chip.active,
body.light-mode .filter-chip.active,
body.light-mode:not([data-theme="light"]) .filter-chip.active {
  background: var(--accent) !important;
  color: var(--on-accent) !important;
  border-color: var(--accent) !important;
}

.status-pill {
  padding: 4px 9px;
  border-radius: var(--r-chip);
  font-size: var(--fs-chip);
  font-weight: 700;
  letter-spacing: 0.04em;
}
body:not(.light-mode) .status-pending {
  color: var(--yellow);
  background: color-mix(in srgb, var(--yellow) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--yellow) 48%, transparent);
}
body:not(.light-mode) .status-arrived {
  color: var(--green);
  background: color-mix(in srgb, var(--green) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--green) 48%, transparent);
}
body:not(.light-mode) .status-loading {
  color: var(--accent2);
  background: color-mix(in srgb, var(--accent2) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent2) 48%, transparent);
}
body:not(.light-mode) .status-cancelled {
  color: var(--red);
  background: color-mix(in srgb, var(--red) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--red) 48%, transparent);
}
body:not(.light-mode) .status-noshow {
  color: var(--muted);
  background: color-mix(in srgb, var(--muted) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--muted) 48%, transparent);
}

.po-chip {
  border-radius: var(--r-control);
  background: var(--surface2);
  color: var(--purple);
}

.truck-k-badge {
  display: inline-flex;
  align-items: center;
  font-family: Inter, sans-serif;
  font-weight: 600;
  font-size: 12px;
  line-height: 1.2;
  color: var(--link);
  background: color-mix(in srgb, var(--link) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--link) 50%, transparent);
  border-radius: var(--r-control);
  padding: 2px 6px;
}

.form-group input,
.form-group select,
.form-group textarea,
.search-input,
.live-board-search {
  border-radius: var(--r-control);
  min-height: var(--btn-h);
}
.form-group input,
.form-group select,
.form-group textarea {
  font-size: var(--fs-body);
}

.quiet-empty {
  color: var(--quiet);
  font-weight: 400;
}

.link-gutter {
  width: 30px;
  position: relative;
  flex: 0 0 30px;
}
.link-line {
  position: absolute;
  left: 14px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--link);
}
.chain-icon {
  position: relative;
  z-index: 1;
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--link);
  background: var(--surface);
  border-radius: var(--r-chip);
}
.chain-icon svg {
  width: 16px;
  height: 16px;
  display: block;
}

.settings-switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  min-height: 40px;
  padding: var(--sp-2) 0;
}
.settings-switch-row .settings-toggle-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.settings-switch-row .settings-toggle-label {
  font-size: var(--fs-body);
  font-weight: 700;
  color: var(--text);
}
.settings-switch-row .settings-toggle-hint {
  font-size: var(--fs-meta);
  font-weight: 400;
  color: var(--text-muted);
}
.settings-switch {
  width: 40px;
  height: 22px;
  flex: 0 0 auto;
  border-radius: var(--r-chip);
  border: 1px solid var(--border);
  background: var(--surface2);
  position: relative;
  padding: 0;
  cursor: pointer;
}
.settings-switch::after {
  content: '';
  width: 16px;
  height: 16px;
  border-radius: var(--r-chip);
  background: var(--surface);
  position: absolute;
  top: 2px;
  left: 2px;
}
.settings-switch[aria-checked="true"] {
  background: var(--accent);
  border-color: var(--accent);
}
.settings-switch[aria-checked="true"]::after {
  left: 20px;
  background: var(--on-accent);
}

@media (max-width: 768px) {
  .btn,
  .btn-ghost,
  .btn-link,
  .mobile-status-action-btn {
    min-height: var(--btn-h-phone);
    border-radius: var(--r-phone);
  }
  .btn-sm { min-height: var(--btn-h-sm); }
  .icon-btn {
    width: var(--btn-h-phone);
    height: var(--btn-h-phone);
    border-radius: var(--r-phone);
  }
  .form-group input,
  .form-group select,
  .form-group textarea,
  .search-input,
  .live-board-search,
  .live-board-search-input {
    min-height: var(--btn-h-phone);
    border-radius: var(--r-phone);
    font-size: var(--fs-num-lg);
  }

  .header-controls .btn {
    width: 40px;
    height: 40px;
    min-height: 40px;
    border-radius: var(--r-control);
  }

  .live-board-search,
  .live-board-search-input,
  .filter-bar .search-input {
    min-height: 0;
    font-size: 0.75rem;
  }
  .live-board-search,
  .filter-bar .search-input {
    border-radius: var(--r-control);
  }

  #settingsModal .btn,
  #settingsModal .btn-ghost,
  #settingsModal .btn-link {
    min-height: 0;
    height: auto;
    border-radius: var(--r-control);
  }
  #settingsModal .form-group input,
  #settingsModal .form-group select,
  #settingsModal .form-group textarea,
  #settingsModal .settings-content input,
  #settingsModal .settings-content select,
  #settingsModal .settings-content textarea,
  #settingsModal .settings-search-input {
    min-height: 0;
    height: auto;
    border-radius: var(--r-control);
    font-size: 0.85rem;
  }
}