/* ===========================================================
   admin.theme.css — RewardService Admin
   自訂主題、版面變數、暗色模式覆寫、可及性焦點樣式
   =========================================================== */

/* ── 1. CSS Custom Properties (Light mode defaults) ── */
:root {
  --rs-sidebar-width:    240px;
  --rs-topbar-height:    56px;

  /* Brand */
  --rs-primary:          #2563eb;
  --rs-primary-dark:     #1d4ed8;
  --rs-accent:           #16a34a;

  /* Page */
  --rs-bg-page:          #f1f5f9;
  --rs-text-page:        #0f172a;
  --rs-text-muted:       #64748b;
  --rs-border:           #e2e8f0;
  --rs-bg-card:          #ffffff;

  /* Sidebar (light default) */
  --rs-bg-sidebar:       #ffffff;
  --rs-text-sidebar:     #334155;
  --rs-nav-hover-bg:     #f1f5f9;
  --rs-nav-hover-text:   #0f172a;
  --rs-nav-active-bg:    #2563eb;
  --rs-text-nav-active:  #ffffff;
  --rs-sidebar-brand-text: #0f172a;

  /* Topbar */
  --rs-bg-topbar:        #ffffff;
  --rs-text-topbar:      #0f172a;
}

/* ── 2a. Light theme (explicit — ensures clean reset when toggling back from dark) ── */
[data-theme="light"] {
  --rs-bg-page:          #f1f5f9;
  --rs-text-page:        #0f172a;
  --rs-text-muted:       #64748b;
  --rs-border:           #e2e8f0;
  --rs-bg-card:          #ffffff;

  --rs-bg-sidebar:       #ffffff;
  --rs-text-sidebar:     #334155;
  --rs-nav-hover-bg:     #f1f5f9;
  --rs-nav-hover-text:   #0f172a;
  --rs-nav-active-bg:    #2563eb;
  --rs-text-nav-active:  #ffffff;
  --rs-sidebar-brand-text: #0f172a;

  --rs-bg-topbar:        #ffffff;
  --rs-text-topbar:      #0f172a;
}

/* ── 2b. Dark theme (manual toggle via data-theme="dark") ── */
[data-theme="dark"] {
  --rs-bg-page:          #0f172a;
  --rs-text-page:        #f1f5f9;
  --rs-text-muted:       #94a3b8;
  --rs-border:           #334155;
  --rs-bg-card:          #1e293b;

  --rs-bg-sidebar:       #0d1b2a;
  --rs-text-sidebar:     #94a3b8;
  --rs-nav-hover-bg:     rgba(255, 255, 255, 0.08);
  --rs-nav-hover-text:   #ffffff;
  --rs-sidebar-brand-text: #ffffff;

  --rs-bg-topbar:        #1e293b;
  --rs-text-topbar:      #f1f5f9;
}

/* ── 3. Auto dark (respects OS preference when no manual override set) ── */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    --rs-bg-page:          #0f172a;
    --rs-text-page:        #f1f5f9;
    --rs-text-muted:       #94a3b8;
    --rs-border:           #334155;
    --rs-bg-card:          #1e293b;
    --rs-bg-sidebar:       #0d1b2a;
    --rs-text-sidebar:     #94a3b8;
    --rs-bg-topbar:        #1e293b;
    --rs-text-topbar:      #f1f5f9;
  }
}

/* ── 4. Base ── */
html, body {
  height: 100%;
  margin: 0;
}

body {
  background-color: var(--rs-bg-page);
  color: var(--rs-text-page);
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* ── 5. Admin Wrapper ── */
.admin-wrapper {
  display: flex;
  min-height: 100vh;
}

/* ── 6. Desktop Sidebar ── */
.admin-sidebar {
  width: var(--rs-sidebar-width);
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  flex-shrink: 0;
  background-color: var(--rs-bg-sidebar);
  transition: background-color 0.2s ease;
  z-index: 100;
}

.sidebar-brand {
  height: var(--rs-topbar-height);
  display: flex;
  align-items: center;
  padding: 0 1.25rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--rs-sidebar-brand-text);
  border-bottom: 1px solid var(--rs-border);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── 7. Nav Items ── */
.admin-nav {
  padding: 0.5rem 0;
}

.admin-nav ul {
  list-style: none;
  margin: 0;
  padding: 0.5rem;
}

.admin-nav-link {
  display: flex;
  align-items: center;
  padding: 0.55rem 0.85rem;
  margin-bottom: 2px;
  border-radius: 6px;
  font-size: 0.9rem;
  color: var(--rs-text-sidebar) !important;
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.admin-nav-link:hover {
  background-color: var(--rs-nav-hover-bg);
  color: var(--rs-nav-hover-text) !important;
}

.admin-nav-link:focus-visible {
  outline: 2px solid var(--rs-primary);
  outline-offset: 1px;
  color: var(--rs-nav-hover-text) !important;
}

.admin-nav-link.active {
  background-color: var(--rs-nav-active-bg) !important;
  color: var(--rs-text-nav-active) !important;
  font-weight: 500;
}

/* ── 8. Main Content Area ── */
.admin-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background-color: var(--rs-bg-page);
  transition: background-color 0.2s ease;
}

/* ── 9. Topbar ── */
.admin-topbar {
  height: var(--rs-topbar-height);
  flex-shrink: 0;
  background-color: var(--rs-bg-topbar);
  border-bottom: 1px solid var(--rs-border);
  color: var(--rs-text-topbar);
  position: sticky;
  top: 0;
  z-index: 99;
  gap: 0.5rem;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.admin-topbar .fw-semibold {
  color: var(--rs-text-topbar);
}

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

/* Hamburger icon inherits topbar text colour */
.admin-topbar .btn-link {
  color: var(--rs-text-topbar) !important;
}

.admin-topbar .btn-link:hover {
  color: var(--rs-primary) !important;
}

/* Dark mode: outline button overrides */
[data-theme="dark"] .admin-topbar .btn-outline-secondary {
  color: var(--rs-text-muted);
  border-color: var(--rs-border);
}

[data-theme="dark"] .admin-topbar .btn-outline-secondary:hover {
  color: var(--rs-text-page);
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--rs-border);
}

[data-theme="dark"] .admin-topbar .btn-outline-danger {
  color: #f87171;
  border-color: #f87171;
}

[data-theme="dark"] .admin-topbar .btn-outline-danger:hover {
  color: #ffffff;
  background-color: #ef4444;
  border-color: #ef4444;
}

/* ── 10. Content Wrapper ── */
.admin-content {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
}

.content-inner {
  max-width: 1280px;
  margin: 0 auto;
}

/* ── 11. Offcanvas Sidebar (mobile) ── */
.admin-offcanvas {
  width: var(--rs-sidebar-width) !important;
  background-color: var(--rs-bg-sidebar) !important;
  transition: background-color 0.2s ease;
}

.admin-offcanvas .offcanvas-header {
  height: var(--rs-topbar-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: #ffffff;
  flex-shrink: 0;
}

.admin-offcanvas .offcanvas-body {
  padding: 0;
  overflow-y: auto;
}

/* ── 12. Cards (dark mode) ── */
.card {
  background-color: var(--rs-bg-card);
  border-color: var(--rs-border);
  color: var(--rs-text-page);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

/* ── 13. Tables (dark mode) ── */
[data-theme="dark"] .table {
  color: var(--rs-text-page);
  border-color: var(--rs-border);
}

[data-theme="dark"] .table-striped > tbody > tr:nth-of-type(odd) > * {
  color: var(--rs-text-page);
  background-color: rgba(255, 255, 255, 0.03);
}

/* ── 14. Form Controls (dark mode) ── */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: #0f172a;
  border-color: var(--rs-border);
  color: var(--rs-text-page);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
  background-color: #0f172a;
  border-color: var(--rs-primary);
  color: var(--rs-text-page);
  box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.3);
}

[data-theme="dark"] .form-label {
  color: var(--rs-text-page);
}

/* ── 15. Links (dark mode) ── */
[data-theme="dark"] a:not(.btn):not(.nav-link):not(.admin-nav-link) {
  color: #60a5fa;
}

/* ── 16. Accessibility: Global Focus Ring ── */
:focus-visible {
  outline: 2px solid var(--rs-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.25);
}

/* ── 17. Brand Colour Override for Bootstrap Buttons ── */
.btn-primary {
  background-color: var(--rs-primary);
  border-color: var(--rs-primary);
}

/* ═══════════════════════════════════════════════════════════
   Component-level classes (used by Shared/*.razor)
   ═══════════════════════════════════════════════════════════ */

/* ── 18. Skip Link ── */
.skip-link {
  position: absolute;
  transform: translateY(-200%);
  left: 0.5rem;
  top: 0.5rem;
  background: var(--rs-primary);
  color: #fff !important;
  padding: 0.4rem 0.9rem;
  border-radius: 4px;
  z-index: 9999;
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  transition: transform 0.18s ease;
}
.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* ── 19. Skeleton / Shimmer ── */
@keyframes rs-shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}
.skeleton-text {
  display: block;
  background: linear-gradient(
    90deg,
    rgba(128, 128, 128, 0.10) 25%,
    rgba(128, 128, 128, 0.25) 50%,
    rgba(128, 128, 128, 0.10) 75%
  );
  background-size: 1200px 100%;
  animation: rs-shimmer 1.5s infinite linear;
  border-radius: 4px;
}

/* ── 20. Loading Bar (top-of-page progress) ── */
.rs-loading-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 9998;
  overflow: hidden;
  background: transparent;
  pointer-events: none;
}
@keyframes rs-bar-slide {
  0%   { transform: translateX(-100%); }
  60%  { transform: translateX(40%); }
  100% { transform: translateX(100%); }
}
.rs-loading-bar-progress {
  height: 100%;
  width: 45%;
  background: linear-gradient(90deg, var(--rs-primary), #60a5fa);
  animation: rs-bar-slide 1.3s ease-in-out infinite;
}

/* ── 21. Table ── */
.rs-table {
  font-size: 0.875rem;
}
.rs-table thead th {
  font-weight: 600;
  white-space: nowrap;
  vertical-align: middle;
  border-bottom: 2px solid var(--rs-border);
}
[data-theme="dark"] .table-light {
  --bs-table-color: var(--rs-text-page) !important;
  --bs-table-bg: rgba(255, 255, 255, 0.04) !important;
  --bs-table-border-color: var(--rs-border) !important;
}
[data-theme="dark"] .rs-table {
  color: var(--rs-text-page);
  border-color: var(--rs-border);
}
[data-theme="dark"] .rs-table tbody td {
  border-color: var(--rs-border);
  color: var(--rs-text-page);
}
[data-theme="dark"] .rs-table tbody tr:hover > td {
  background-color: rgba(255, 255, 255, 0.05) !important;
  color: var(--rs-text-page);
}
[data-theme="dark"] .table-danger {
  --bs-table-bg: rgba(220, 38, 38, 0.18) !important;
  --bs-table-color: #fca5a5 !important;
}

/* ── 22. DataTable Container ── */
.rs-datatable { /* layout hook */ }

/* ── 23. Empty State ── */
.rs-empty-state {
  padding: 3.5rem 1rem;
}
.rs-empty-state .bi {
  font-size: 2.8rem;
  opacity: 0.35;
  display: block;
  margin-bottom: 0.75rem;
}

/* ── 24. KPI Card ── */
.kpi-card {
  transition: box-shadow 0.2s ease, transform 0.15s ease;
}
.kpi-card:hover {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.10);
  transform: translateY(-2px);
}
.kpi-value {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 0.25rem;
}
.kpi-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── 25. Toast ── */
.rs-toast {
  min-width: 280px;
  max-width: 420px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.18);
  border-radius: 6px;
  overflow: hidden;
}
.rs-toast-success { border-left: 4px solid #16a34a; }
.rs-toast-warning { border-left: 4px solid #d97706; }
.rs-toast-error   { border-left: 4px solid #dc2626; }
.rs-toast-info    { border-left: 4px solid #0891b2; }
[data-theme="dark"] .rs-toast {
  background-color: #1e293b;
  color: var(--rs-text-page);
}
[data-theme="dark"] .rs-toast .toast-header {
  background-color: #1e293b;
  color: var(--rs-text-page);
  border-bottom-color: var(--rs-border);
}
[data-theme="dark"] .btn-close {
  filter: invert(1) grayscale(1);
}

/* ── 26. Required Field Indicator ── */
.rs-field-required::after {
  content: " *";
  color: #dc2626;
  font-weight: 600;
  font-size: 0.9em;
}

/* ── 27. Sort Header Button ── */
.rs-sort-btn {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: inherit;
  font-weight: 600;
  font-size: inherit;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  white-space: nowrap;
  line-height: inherit;
}
.rs-sort-btn:hover  { color: var(--rs-primary); }
.rs-sort-btn:focus-visible {
  outline: 2px solid var(--rs-primary);
  outline-offset: 3px;
  border-radius: 2px;
}
.rs-sort-icon {
  opacity: 0.28;
  font-size: 0.8rem;
  transition: opacity 0.15s, color 0.15s;
}
.rs-sort-icon.active {
  opacity: 1;
  color: var(--rs-primary);
}

/* ── 28. Pagination dark mode ── */
[data-theme="dark"] .page-link {
  background-color: var(--rs-bg-card);
  border-color: var(--rs-border);
  color: var(--rs-text-page);
}
[data-theme="dark"] .page-link:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--rs-text-page);
  border-color: var(--rs-border);
}
[data-theme="dark"] .page-item.active .page-link {
  background-color: var(--rs-primary);
  border-color: var(--rs-primary);
  color: #fff;
}
[data-theme="dark"] .page-item.disabled .page-link {
  background-color: var(--rs-bg-card);
  border-color: var(--rs-border);
  color: var(--rs-text-muted);
}

/* ── 29. Card header dark mode ── */
[data-theme="dark"] .card-header {
  background-color: rgba(255, 255, 255, 0.04);
  border-bottom-color: var(--rs-border);
  color: var(--rs-text-page);
}

/* ── 30. Alert dark mode ── */
[data-theme="dark"] .alert-warning {
  background-color: rgba(217, 119, 6, 0.15);
  border-color:     rgba(217, 119, 6, 0.30);
  color: #fbbf24;
}
[data-theme="dark"] .alert-danger {
  background-color: rgba(220, 38, 38, 0.15);
  border-color:     rgba(220, 38, 38, 0.30);
  color: #f87171;
}
[data-theme="dark"] .alert-info {
  background-color: rgba(8, 145, 178, 0.15);
  border-color:     rgba(8, 145, 178, 0.30);
  color: #38bdf8;
}

/* ── 31. Badge contrast dark ── */
[data-theme="dark"] .badge.bg-secondary { background-color: #475569 !important; }
[data-theme="dark"] .badge.bg-warning   { color: #1e293b !important; }
[data-theme="dark"] .badge.bg-info      { color: #1e293b !important; }

/* ── 32. Modal dark mode ── */
[data-theme="dark"] .modal-content {
  background-color: var(--rs-bg-card);
  border-color: var(--rs-border);
  color: var(--rs-text-page);
}
[data-theme="dark"] .modal-header { border-bottom-color: var(--rs-border); }
[data-theme="dark"] .modal-footer { border-top-color: var(--rs-border); }
[data-theme="dark"] .modal-backdrop { background-color: rgba(0, 0, 0, 0.7); }

/* ── 33. Select option dark ── */
[data-theme="dark"] .form-select option {
  background-color: #1e293b;
  color: var(--rs-text-page);
}

/* ── 34. Input placeholder dark ── */
[data-theme="dark"] .form-control::placeholder,
[data-theme="dark"] .form-select::placeholder {
  color: var(--rs-text-muted);
  opacity: 0.7;
}

/* ── 35. Spinner dark ── */
[data-theme="dark"] .spinner-border {
  border-color: currentColor;
  border-right-color: transparent;
}

/* ── 36. Responsive ── */
@media (max-width: 575.98px) {
  .admin-content { padding: 0.75rem; }
  .kpi-value     { font-size: 1.6rem; }
  .rs-toast      { min-width: 240px; max-width: calc(100vw - 2rem); }
}

/* ── 37. btn-primary hover / focus ── */
.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--rs-primary-dark);
  border-color: var(--rs-primary-dark);
}

/* ── 38. Blazor Error UI ── */
#blazor-error-ui {
  background: #fef9c3;
  bottom: 0;
  box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
  display: none;
  left: 0;
  padding: 0.6rem 1.25rem 0.7rem 1.25rem;
  position: fixed;
  width: 100%;
  z-index: 1000;
  color: #713f12;
}
#blazor-error-ui .reload {
  font-weight: 600;
  text-decoration: underline;
  cursor: pointer;
}
#blazor-error-ui .dismiss {
  cursor: pointer;
  position: absolute;
  right: 0.75rem;
  top: 0.5rem;
  background: none;
  border: none;
  font-size: 1rem;
  line-height: 1;
  padding: 0;
}

/* ── 39. Table hover dark ── */
[data-theme="dark"] .table-hover > tbody > tr:hover > * {
  background-color: rgba(255, 255, 255, 0.04) !important;
  color: var(--rs-text-page);
}

/* ── 40. Alert success dark ── */
[data-theme="dark"] .alert-success {
  background-color: rgba(22, 163, 74, 0.15);
  border-color:     rgba(22, 163, 74, 0.30);
  color: #4ade80;
}

/* ── 41. Code dark ── */
[data-theme="dark"] code {
  background-color: rgba(255, 255, 255, 0.10);
  color: #f472b6;
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

/* ══════════════════════════════════════════════════════════
   42. color-scheme — 讓瀏覽器原生元素（捲軸、input 等）
       也跟著主題走，這是「只有 Dark 沒有 Light」的根本修正
   ══════════════════════════════════════════════════════════ */
:root,
[data-theme="light"] {
  color-scheme: light;
}

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