.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  border: 1px solid #8fa2b9;
  border-radius: 999px;
  background: transparent;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 9px 14px;
  white-space: nowrap;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: #25344e;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

html[data-theme="dark"] body {
  background: #111927;
  color: #edf3fa;
}

html[data-theme="dark"] .panel {
  background: #1b293b;
  border-color: #35485e;
  box-shadow: 0 12px 30px rgba(0, 0, 0, .18);
}

html[data-theme="dark"] .login-card {
  background: linear-gradient(155deg, #173a3b, #1b293b 52%, #332e22);
}

html[data-theme="dark"] .intro p,
html[data-theme="dark"] .login-card p,
html[data-theme="dark"] .editor-head p,
html[data-theme="dark"] .sidebar-head span,
html[data-theme="dark"] .coupon-head span,
html[data-theme="dark"] .merchant-item span,
html[data-theme="dark"] .coupon-card .slot-meta,
html[data-theme="dark"] .media-note span {
  color: #b6c5d4;
}

html[data-theme="dark"] .form-panel label,
html[data-theme="dark"] .coupon-card label,
html[data-theme="dark"] .login-card label {
  color: #d5e2ee;
}

html[data-theme="dark"] input:not([type=checkbox]),
html[data-theme="dark"] select,
html[data-theme="dark"] textarea {
  background: #101c2b;
  color: #f2f7fc;
  border-color: #475b70;
}

html[data-theme="dark"] input::placeholder {
  color: #aab9c8;
}

html[data-theme="dark"] .primary,
html[data-theme="dark"] .small-primary {
  background: #344d6a;
  color: #fff;
}

html[data-theme="dark"] .quiet {
  background: #25364b;
  color: #ecf3fa;
  border-color: #5b7188;
}

html[data-theme="dark"] .merchant-item {
  color: #edf3fa;
}

html[data-theme="dark"] .merchant-item:hover {
  background: #263c4b;
}

html[data-theme="dark"] .merchant-item.selected {
  background: #20524f;
  border-color: #6db9aa;
}

html[data-theme="dark"] .media-note {
  background: #373225;
  border-color: #7b6638;
}

html[data-theme="dark"] .id-label {
  color: #a9b9ca;
}

html[data-theme="dark"] .notice {
  color: #83ddca;
}

html[data-theme="dark"] .error,
html[data-theme="dark"] .message {
  color: #ffaaa0 !important;
}

html[data-theme="dark"] .danger {
  background: #482b30;
  color: #ffd0c8;
  border-color: #b87572;
}

html[data-theme="dark"] .text-button {
  color: #8ed9ed;
}

html[data-theme="dark"] .bulk-panel { background: linear-gradient(120deg,#173a3b,#1b293b 72%); }
html[data-theme="dark"] .bulk-top p,
html[data-theme="dark"] .bulk-row small { color:#b6c5d4; }
html[data-theme="dark"] .bulk-top strong { color:#91ddca; }
html[data-theme="dark"] .bulk-filters label { color:#d5e2ee; }
html[data-theme="dark"] .bulk-list { background:#101c2b;border-color:#475b70; }
html[data-theme="dark"] .bulk-row { border-color:#35485e; }

@media (max-width: 560px) {
  .theme-toggle {
    padding: 8px 10px;
    font-size: 12px;
  }
}