:root {
  --admin-bg: #f5f6f8;
  --admin-text: #1f2328;
  --admin-nav-bg: #212529;
  --admin-nav-text: #ffffff;
  --admin-nav-focus: #ffd54f;
  --admin-button-bg: #0d6efd;
  --admin-button-text: #ffffff;
}

body {
  background: var(--admin-bg);
  color: var(--admin-text);
}

.navbar-brand {
  font-weight: 600;
  color: var(--admin-nav-text) !important;
}

.navbar {
  background: var(--admin-nav-bg) !important;
}

.navbar .nav-link {
  color: var(--admin-nav-text) !important;
}

.navbar .nav-link.active,
.navbar .nav-link:focus,
.navbar .nav-link:hover {
  color: var(--admin-nav-focus) !important;
}

.btn-primary {
  background: var(--admin-button-bg);
  border-color: var(--admin-button-bg);
  color: var(--admin-button-text);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--admin-button-bg);
  border-color: var(--admin-button-bg);
  opacity: 0.9;
}

.card-stat {
  border: 0;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
}

.theme-preview {
  background: var(--grid-bg, #0f1115);
  color: var(--about-text, #ffffff);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.theme-preview-menu {
  background: var(--menu-bar-bg, #0b0b0b);
  color: var(--menu-text, #ffffff);
  padding: 8px 12px;
  border-radius: 6px;
  font-weight: 600;
}

.theme-preview-menu-button {
  background: var(--menu-focus, #ffd54f);
  color: var(--menu-text, #000000);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
}

.theme-preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.theme-preview-card {
  background: rgba(255, 255, 255, 0.06);
  padding: 12px;
  border-radius: 10px;
}

.theme-preview-icon {
  width: 72px;
  height: 72px;
  background: var(--icon-bg, #1e1e1e);
  border-radius: 8px;
  margin-bottom: 8px;
}

.theme-preview-title {
  color: var(--app-name-text, #ffffff);
  font-weight: 600;
}

.theme-preview-info {
  color: var(--app-info-text, #b0b0b0);
  font-size: 12px;
}

.theme-preview-about {
  background: var(--about-bg, #101318);
  color: var(--about-text, #ffffff);
  padding: 12px;
  border-radius: 10px;
}

.theme-preview-about-title {
  font-weight: 600;
  margin-bottom: 6px;
}

.theme-preview-button {
  background: var(--button-bg, #1f6feb);
  color: var(--button-text, #ffffff);
  border: none;
  border-radius: 6px;
  padding: 6px 12px;
  margin-top: 10px;
}

.apk-dropzone {
  border: 2px dashed #c6cbd6;
  border-radius: 12px;
  background: #fff;
  padding: 18px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.apk-dropzone.is-dragover {
  border-color: #0d6efd;
  box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.12);
}

.apk-dropzone .small {
  color: #6c757d;
}