.h-100 {
  height: 100% !important;
}

.card {
  position: relative;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
  min-width: 0;
  min-height: 275px;
  word-wrap: break-word;
  background-color: #fff;
  background-clip: border-box;
  border: 1px solid rgba(0, 0, 0, 0.125);
  border-radius: 0.25rem;
}

.card > hr {
  margin-right: 0;
  margin-left: 0;
}

.card > .list-group:first-child .list-group-item:first-child {
  border-top-left-radius: 0.25rem;
  border-top-right-radius: 0.25rem;
}

.card > .list-group:last-child .list-group-item:last-child {
  border-bottom-right-radius: 0.25rem;
  border-bottom-left-radius: 0.25rem;
}

.card-body {
  -ms-flex: 1 1 auto;
  flex: 1 1 auto;
  padding: 1.25rem;
}

.card-title {
  margin-bottom: 0.75rem;
}

.card-subtitle {
  margin-top: -0.375rem;
  margin-bottom: 0;
}

.card-text:last-child {
  margin-bottom: 0;
}

.card-link:hover {
  text-decoration: none;
}

.card-link + .card-link {
  margin-left: 1.25rem;
}

.card-header {
  padding: 0.75rem 1.25rem;
  margin-bottom: 0;
  background-color: rgba(0, 0, 0, 0.03);
  border-bottom: 1px solid rgba(0, 0, 0, 0.125);
}

.card-header:first-child {
  border-radius: calc(0.25rem - 1px) calc(0.25rem - 1px) 0 0;
}

.card-header + .list-group .list-group-item:first-child {
  border-top: 0;
}

.card-footer {
  padding: 0.75rem 1.25rem;
  background-color: rgba(0, 0, 0, 0.03);
  border-top: 1px solid rgba(0, 0, 0, 0.125);
}

.card-footer:last-child {
  border-radius: 0 0 calc(0.25rem - 1px) calc(0.25rem - 1px);
}

.card-header-tabs {
  margin-right: -0.625rem;
  margin-bottom: -0.75rem;
  margin-left: -0.625rem;
  border-bottom: 0;
}

.card-header-pills {
  margin-right: -0.625rem;
  margin-left: -0.625rem;
}

.card-img-overlay {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 1.25rem;
}

.card-img {
  width: 100%;
  border-radius: calc(0.25rem - 1px);
}

.card-img-top {
  width: 100%;
  border-top-left-radius: calc(0.25rem - 1px);
  border-top-right-radius: calc(0.25rem - 1px);
}

.card-img-bottom {
  width: 100%;
  border-bottom-right-radius: calc(0.25rem - 1px);
  border-bottom-left-radius: calc(0.25rem - 1px);
}

.card-deck {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
}

.card-deck .card {
  margin-bottom: 15px;
}

@media (min-width: 576px) {
  .card-deck {
    -ms-flex-flow: row wrap;
    flex-flow: row wrap;
    margin-right: -15px;
    margin-left: -15px;
  }
  .card-deck .card {
    display: -ms-flexbox;
    display: flex;
    -ms-flex: 1 0 0%;
    flex: 1 0 0%;
    -ms-flex-direction: column;
    flex-direction: column;
    margin-right: 15px;
    margin-bottom: 0;
    margin-left: 15px;
  }
}

.card-group {
  display: -ms-flexbox;
  display: flex;
  -ms-flex-direction: column;
  flex-direction: column;
}

.card-group .card {
  margin-bottom: 15px;
}

@media (min-width: 576px) {
  .card-group {
    -ms-flex-flow: row wrap;
    flex-flow: row wrap;
  }
  .card-group .card {
    -ms-flex: 1 0 0%;
    flex: 1 0 0%;
    margin-bottom: 0;
  }
  .card-group .card + .card {
    margin-left: 0;
    border-left: 0;
  }
  .card-group .card:first-child {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
  }
  .card-group .card:first-child .card-img-top {
    border-top-right-radius: 0;
  }
  .card-group .card:first-child .card-img-bottom {
    border-bottom-right-radius: 0;
  }
  .card-group .card:last-child {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
  }
  .card-group .card:last-child .card-img-top {
    border-top-left-radius: 0;
  }
  .card-group .card:last-child .card-img-bottom {
    border-bottom-left-radius: 0;
  }
  .card-group .card:only-child {
    border-radius: 0.25rem;
  }
  .card-group .card:only-child .card-img-top {
    border-top-left-radius: 0.25rem;
    border-top-right-radius: 0.25rem;
  }
  .card-group .card:only-child .card-img-bottom {
    border-bottom-right-radius: 0.25rem;
    border-bottom-left-radius: 0.25rem;
  }
  .card-group .card:not(:first-child):not(:last-child):not(:only-child) {
    border-radius: 0;
  }
  .card-group
    .card:not(:first-child):not(:last-child):not(:only-child)
    .card-img-top,
  .card-group
    .card:not(:first-child):not(:last-child):not(:only-child)
    .card-img-bottom {
    border-radius: 0;
  }
}

.card-columns .card {
  margin-bottom: 0.75rem;
}

@media (min-width: 576px) {
  .card-columns {
    -webkit-column-count: 3;
    column-count: 3;
    -webkit-column-gap: 1.25rem;
    column-gap: 1.25rem;
  }
  .card-columns .card {
    display: inline-block;
    width: 100%;
  }
}

/* ===== StatCard Loading & Error States ===== */

/* Loading spinner (保留現有 loader 樣式) */
.loader {
  display: block;
  width: 50px;
  height: 50px;
  margin: 100px auto;
  border: 6px solid #f3f3f3;
  border-top: 6px solid #0d6efd;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.loader.hidden {
  display: none;
}

/* Error card styles */
.card-error {
  border-color: #dc3545 !important;
  border-width: 2px !important;
  background-color: #fff5f5 !important;
  box-shadow: 0 2px 8px rgba(220, 53, 69, 0.15) !important;
}

.card-error .card-title {
  color: #dc3545;
  margin-bottom: 1rem;
}

.card-error .card-title .fa {
  margin-right: 0.5rem;
}

.card-error .card-text {
  color: #6c757d;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

/* Retry button styles */
.retry-btn {
  border-color: #0d6efd !important;
  color: #0d6efd !important;
  background-color: transparent;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 0.25rem;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.retry-btn:hover,
.retry-btn:focus {
  background-color: #0d6efd !important;
  color: #fff !important;
  border-color: #0d6efd !important;
  box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
  outline: none;
}

.retry-btn:active {
  transform: scale(0.98);
}

.retry-btn .fa {
  margin-right: 0.5rem;
}

/* Retry message styles - scoped to StatCard containers to avoid global conflicts */
.partialContents .spinner-border,
.card-error .spinner-border {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  vertical-align: -0.125em;
  border: 0.25em solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spinner-border-rotate 0.75s linear infinite;
}

@keyframes spinner-border-rotate {
  to {
    transform: rotate(360deg);
  }
}

/* Scope spinner styles to StatCard containers to avoid global conflicts */
.partialContents .spinner-border.text-primary,
.card-error .spinner-border.text-primary {
  color: #0d6efd;
}

/* Scope visually-hidden to StatCard containers to avoid overriding Bootstrap globally */
.partialContents .visually-hidden,
.card-error .visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Accessibility improvements */
.card-error [role="alert"] {
  /* ARIA live region 已在 HTML 設定 */
}

/* Ensure sufficient color contrast (WCAG AA) - scoped to StatCard */
.partialContents .text-muted,
.card-error .text-muted {
  color: #6c757d !important; /* Contrast ratio: 4.54:1 */
}

/* Responsive adjustments */
@media (max-width: 576px) {
  .retry-btn {
    width: 100%;
    margin-top: 0.5rem;
  }

  .loader {
    margin: 50px auto;
  }
}

/* Print styles (隱藏錯誤狀態) */
@media print {
  .card-error,
  .retry-btn,
  .loader {
    display: none !important;
  }
}