/* ============================================================
   Skeleton Loader — CSS
   Page-specific shimmer placeholders for navigation transitions
   ============================================================ */

/* --- Shimmer Animation --- */
@keyframes skeleton-shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

@keyframes skeleton-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes skeleton-progress {
  0%   { width: 0; }
  25%  { width: 40%; }
  50%  { width: 70%; }
  100% { width: 100%; }
}

/* --- Base Skeleton Block --- */
.skeleton-block {
  background: linear-gradient(
    90deg,
    rgba(0, 0, 0, 0.06) 25%,
    rgba(0, 0, 0, 0.03) 37%,
    rgba(0, 0, 0, 0.06) 63%
  );
  background-size: 800px 100%;
  animation: skeleton-shimmer 1.5s infinite linear;
  border-radius: 6px;
}

[data-bs-theme="dark"] .skeleton-block {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.06) 25%,
    rgba(255, 255, 255, 0.03) 37%,
    rgba(255, 255, 255, 0.06) 63%
  );
  background-size: 800px 100%;
}

/* --- Overlay Container --- */
.skeleton-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 20000;
  background: rgba(var(--bs-body-bg-rgb, 250, 249, 246), 0.96);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  overflow-y: auto;
  overflow-x: hidden;
  padding-top: 80px; /* Clear navbar */
  opacity: 1 !important;
  display: block !important;
}

/* --- Immediate Progress Bar --- */
/* Detached from overlay to ensure absolute top-level visibility */
#global-progress-bar {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  width: 0;
  height: 4px !important;
  background-color: #0d6efd !important;
  background: var(--bs-primary, #0d6efd) !important;
  z-index: 2147483647 !important; /* Maximum possible z-index */
  box-shadow: 0 1px 10px rgba(13, 110, 253, 0.5) !important;
  pointer-events: none;
  display: none;
  transition: width 0.3s cubic-bezier(0.1, 0.5, 0.5, 1);
}

#global-progress-bar.active {
  display: block;
  animation: skeleton-progress 3s cubic-bezier(0.1, 0.5, 0.5, 1) forwards;
}

[data-bs-theme="dark"] .skeleton-overlay {
  background: rgba(17, 19, 21, 0.96);
}

.skeleton-overlay .skeleton-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0.5rem 0.75rem 2rem;
}

@media (min-width: 576px) {
  .skeleton-overlay .skeleton-inner { padding: 0.5rem 1.5rem 2rem; }
}

@media (min-width: 1200px) {
  .skeleton-overlay .skeleton-inner { padding: 1rem 0.75rem 2rem; }
}

/* --- Size Helpers --- */
.sk-w-25  { width: 25%; }
.sk-w-30  { width: 30%; }
.sk-w-40  { width: 40%; }
.sk-w-50  { width: 50%; }
.sk-w-60  { width: 60%; }
.sk-w-70  { width: 70%; }
.sk-w-80  { width: 80%; }
.sk-w-100 { width: 100%; }
.sk-h-8   { height: 8px; }
.sk-h-10  { height: 10px; }
.sk-h-12  { height: 12px; }
.sk-h-14  { height: 14px; }
.sk-h-16  { height: 16px; }
.sk-h-20  { height: 20px; }
.sk-h-24  { height: 24px; }
.sk-h-32  { height: 32px; }
.sk-h-38  { height: 38px; }
.sk-h-40  { height: 40px; }
.sk-h-120 { height: 120px; }
.sk-h-200 { height: 200px; }
.sk-h-250 { height: 250px; }

.sk-rounded-pill { border-radius: 50rem; }
.sk-rounded-circle { border-radius: 50%; }

/* --- Reusable Patterns --- */

/* Page Header: Title bar + optional button */
.sk-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}

.sk-header-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Stats Row: Small stat boxes */
.sk-stats-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.sk-stat-box {
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 8px;
  padding: 12px 16px;
  min-width: 100px;
  flex: 1;
  max-width: 180px;
}

[data-bs-theme="dark"] .sk-stat-box {
  border-color: rgba(255, 255, 255, 0.06);
}

.sk-stat-box .skeleton-block:first-child {
  margin-bottom: 6px;
}

/* Card Container */
.sk-card {
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 12px;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.5);
}

[data-bs-theme="dark"] .sk-card {
  border-color: rgba(255, 255, 255, 0.05);
  background: rgba(26, 29, 33, 0.5);
}

/* Table Skeleton */
.sk-table {
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 12px;
  overflow: hidden;
}

[data-bs-theme="dark"] .sk-table {
  border-color: rgba(255, 255, 255, 0.05);
}

.sk-table-header {
  display: flex;
  gap: 1rem;
  padding: 14px 20px;
  background: rgba(0, 0, 0, 0.02);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

[data-bs-theme="dark"] .sk-table-header {
  background: rgba(255, 255, 255, 0.02);
  border-bottom-color: rgba(255, 255, 255, 0.05);
}

.sk-table-row {
  display: flex;
  gap: 1rem;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.03);
}

[data-bs-theme="dark"] .sk-table-row {
  border-bottom-color: rgba(255, 255, 255, 0.03);
}

.sk-table-row:last-child {
  border-bottom: none;
}

/* Filter Bar */
.sk-filter-bar {
  display: flex;
  gap: 0.75rem;
  padding: 1rem;
  margin-bottom: 1rem;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.01);
  flex-wrap: wrap;
  align-items: center;
}

[data-bs-theme="dark"] .sk-filter-bar {
  border-color: rgba(255, 255, 255, 0.05);
  background: rgba(255, 255, 255, 0.01);
}

/* Chart Placeholder */
.sk-chart {
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 12px;
  padding: 1.25rem;
}

[data-bs-theme="dark"] .sk-chart {
  border-color: rgba(255, 255, 255, 0.05);
}

.sk-chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

/* Grid Layouts */
.sk-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.sk-grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.sk-grid-4 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .sk-grid-2 { grid-template-columns: 1fr 1fr; }
  .sk-grid-3 { grid-template-columns: 1fr 1fr 1fr; }
  .sk-grid-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
}

/* Settings Sidebar Layout */
.sk-settings-layout {
  display: flex;
  gap: 1.5rem;
}

.sk-sidebar {
  display: none;
  flex-direction: column;
  gap: 6px;
  min-width: 220px;
  max-width: 250px;
}

@media (min-width: 768px) {
  .sk-sidebar { display: flex; }
}

.sk-sidebar-item {
  border-radius: 50rem;
  padding: 10px 16px;
}

.sk-settings-content {
  flex: 1;
  min-width: 0;
}

/* Calendar Grid */
.sk-calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0;
}

.sk-calendar-cell {
  border: 1px solid rgba(0, 0, 0, 0.04);
  min-height: 100px;
  padding: 8px;
}

[data-bs-theme="dark"] .sk-calendar-cell {
  border-color: rgba(255, 255, 255, 0.04);
}

@media (max-width: 768px) {
  .sk-calendar-cell { min-height: 60px; padding: 4px; }
}

/* Calendar Weekday Header */
.sk-calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0;
  background: rgba(0, 0, 0, 0.02);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

[data-bs-theme="dark"] .sk-calendar-weekdays {
  background: rgba(255, 255, 255, 0.02);
  border-bottom-color: rgba(255, 255, 255, 0.04);
}

.sk-calendar-weekdays > div {
  padding: 10px;
  display: flex;
  justify-content: center;
}

/* Form Fields */
.sk-form-group {
  margin-bottom: 1.25rem;
}

.sk-form-group .sk-label {
  margin-bottom: 6px;
}

/* Toggle Bar */
.sk-toggle-bar {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.sk-toggle-inner {
  display: flex;
  gap: 4px;
  padding: 4px;
  border-radius: 50rem;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(0, 0, 0, 0.02);
}

[data-bs-theme="dark"] .sk-toggle-inner {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

/* List Group Items */
.sk-list-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

[data-bs-theme="dark"] .sk-list-item {
  border-bottom-color: rgba(255, 255, 255, 0.04);
}

.sk-list-item:last-child {
  border-bottom: none;
}

/* Breadcrumb */
.sk-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.sk-breadcrumb-sep {
  color: rgba(0, 0, 0, 0.2);
  font-size: 0.75rem;
}

[data-bs-theme="dark"] .sk-breadcrumb-sep {
  color: rgba(255, 255, 255, 0.2);
}