app/src/admin/base.css

/* ============================================================================
   Reset & Base
   ============================================================================ */

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

/* Premium dark/light cross-fade via the View Transitions API (driven by
   ThemeContext.toggleTheme). The browser cross-fades a GPU-composited snapshot
   of the whole page — smooth at any element count — instead of repainting every
   node's colors (which stutters). Tune only the root cross-fade timing here. */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.3s;
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none;
  }
}

html,
body,
#root {
  min-height: 100%;
  min-height: 100dvh;
  max-width: 100vw;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
  overscroll-behavior-x: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

#root {
  overflow-x: hidden;
  touch-action: pan-y pinch-zoom;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}
h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}
h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  color: var(--text-secondary);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

img {
  max-width: 100%;
  height: auto;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

::selection {
  background: var(--accent-color);
  color: #fff;
}

/* ============================================================================
   Base / Utilities
   ============================================================================ */

.text-warning {
  color: var(--warning) !important;
}

.text-danger {
  color: var(--danger) !important;
}

.text-success {
  color: var(--success) !important;
}

.text-muted {
  color: var(--text-muted) !important;
}

.text-secondary {
  color: var(--text-secondary) !important;
}

.text-tertiary {
  color: var(--text-tertiary) !important;
}

.text-accent {
  color: var(--accent-color) !important;
}

.fw-600 {
  font-weight: 600 !important;
}

.link-accent {
  color: var(--accent-color);
  font-weight: 500;
  text-decoration: none;
}

.link-accent:hover {
  text-decoration: underline;
}

/* Layout utilities */
.flex-1 {
  flex: 1;
}
.flex-row {
  display: flex;
  align-items: center;
}
.flex-row-gap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Spacing utilities */
.mb-2 {
  margin-bottom: var(--space-2);
}
.mb-4 {
  margin-bottom: var(--space-4);
}
.mb-6 {
  margin-bottom: var(--space-6);
}
.mt-2 {
  margin-top: var(--space-2);
}
.mt-6 {
  margin-top: var(--space-6);
}
.gap-2 {
  gap: var(--space-2);
}
.gap-4 {
  gap: var(--space-4);
}
.gap-5 {
  gap: var(--space-5);
}

/* Typography utilities */
.fw-500 {
  font-weight: 500;
}
.text-right {
  text-align: right;
}
.text-center {
  text-align: center;
}

/* Loading & Animations */
.admin-spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--accent-color);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ── Additional Utilities ─────────────────────────────────────────── */

/* Font sizes */
.text-xs {
  font-size: 0.75rem;
}
.text-sm {
  font-size: 0.8125rem;
}
.text-md {
  font-size: 0.875rem;
}
.text-base {
  font-size: 1rem;
}

/* Width utilities */
.w-full {
  width: 100%;
}
.max-w-xs {
  max-width: 120px;
}
.max-w-sm {
  max-width: 200px;
}

/* Whitespace */
.whitespace-nowrap {
  white-space: nowrap;
}

/* Additional gaps */
.gap-1 {
  gap: 0.25rem;
}
.gap-3 {
  gap: 0.75rem;
}
.gap-6 {
  gap: 1.5rem;
}

/* Additional margins */
.mb-1 {
  margin-bottom: 0.25rem;
}
.mb-3 {
  margin-bottom: 0.75rem;
}
.mt-1 {
  margin-top: 0.25rem;
}
.mt-3 {
  margin-top: 0.75rem;
}

/* Display */
.inline-flex {
  display: inline-flex;
  align-items: center;
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .admin-spinner {
    animation-duration: 0.8s !important;
    animation-iteration-count: infinite !important;
  }
}