/**
 * IRFCA Historical Timetable Archive - Catalog Styles
 *
 * Custom styles for the catalog filtering and sorting interface.
 */

/* ===== VIEWPORT CONTAINMENT ===== */

html, body {
  overflow-x: hidden;
  max-width: 100%;
}

/* ===== FILTER SIDEBAR ===== */

.sidebar {
  border-right: 1px solid #dee2e6;
}

.filters-sidebar {
  /* No sticky behavior - scrolls naturally with page */
}

.filters-sidebar h6 {
  font-size: 0.9rem;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  margin-top: 0.75rem;
  border-bottom: 1px solid #dee2e6;
  padding-bottom: 0.5rem;
}

.filters-sidebar h6:first-of-type {
  margin-top: 0;
}

.filters-sidebar .form-check {
  margin-bottom: 0.5rem;
}

.filters-sidebar .form-check-label {
  font-size: 0.875rem;
  color: #495057;
  cursor: pointer;
}

.filters-sidebar .form-check-input:checked ~ .form-check-label {
  color: #0073e6;
  font-weight: 500;
}

/* Sticky sidebar on desktop - removed max-height and overflow to prevent internal scrolling */

/* ===== ACTIVE FILTER CHIPS ===== */

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  background-color: var(--bs-primary-bg-subtle);
  border: 1px solid var(--bs-primary);
  border-radius: 0.375rem;
  font-size: 0.875rem;
  color: var(--bs-primary);
}

.filter-chip-close {
  background: none;
  border: none;
  color: var(--bs-primary);
  font-size: 1.25rem;
  font-weight: bold;
  line-height: 1;
  padding: 0;
  margin: 0;
  cursor: pointer;
  transition: color 0.2s;
}

.filter-chip-close:hover {
  color: #005bb5;
}

/* ===== CATALOG GRID ===== */

#catalog-grid {
  min-height: 300px;
}

.timetable-item {
  transition: opacity 0.2s ease;
}

.timetable-item img {
  max-width: 100%;
  height: auto;
  transition: transform 0.2s ease;
}

.timetable-item:hover img {
  transform: scale(1.02);
}

/* ===== RESULTS COUNTER ===== */

#results-counter {
  font-size: 0.875rem;
  font-weight: 500;
}

/* ===== SORT DROPDOWN ===== */

/* Using Bootstrap's w-auto utility class */

/* ===== NO RESULTS MESSAGE ===== */

#no-results {
  background: #f8f9fa;
  border: 2px dashed #dee2e6;
  border-radius: 0.5rem;
  padding: 3rem;
}

#no-results .lead {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}

/* ===== MOBILE RESPONSIVENESS ===== */

/* Mobile Filter Toggle Button */
#mobile-filter-toggle {
  position: sticky;
  top: 0;
  z-index: 1020;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

@media (max-width: 991px) {
  .sidebar {
    border-right: none;
    border-bottom: 1px solid #dee2e6;
    padding-bottom: 1rem;
    margin-bottom: 2rem;
  }

  /* Ensure filters collapse smoothly on mobile */
  #filter-collapse {
    transition: height 0.35s ease;
  }

  /* Add spacing after filters when expanded */
  #filter-collapse.show {
    margin-bottom: 1rem;
  }
}

@media (max-width: 575px) {
  .filter-chip {
    font-size: 0.8125rem;
    padding: 0.25rem 0.5rem;
  }
}

/* ===== LOADING STATE ===== */

.catalog-loading {
  opacity: 0.5;
  pointer-events: none;
}

/* ===== FORM CONTROLS ===== */

/* Bootstrap 5.3.2 official styles - added because main.min.css is a custom build without forms module */

/* Form Control (text inputs) */
.form-control {
  display: block;
  width: 100%;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--bs-body-color);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-color: var(--bs-body-bg);
  background-clip: padding-box;
  border: var(--bs-border-width) solid var(--bs-border-color);
  border-radius: var(--bs-border-radius);
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
  color: var(--bs-body-color);
  background-color: var(--bs-body-bg);
  border-color: #86b7fe;
  outline: 0;
  box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-control::-moz-placeholder {
  color: var(--bs-secondary-color);
  opacity: 1;
}

.form-control::placeholder {
  color: var(--bs-secondary-color);
  opacity: 1;
}

.form-control:disabled {
  background-color: var(--bs-secondary-bg);
  opacity: 1;
}

/* Form Select (dropdowns) */
.form-select {
  --bs-form-select-bg-img: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
  display: block;
  width: 100%;
  padding: 0.375rem 2.25rem 0.375rem 0.75rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--bs-body-color);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-color: var(--bs-body-bg);
  background-image: var(--bs-form-select-bg-img), var(--bs-form-select-bg-icon, none);
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 16px 12px;
  border: var(--bs-border-width) solid var(--bs-border-color);
  border-radius: var(--bs-border-radius);
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-select:focus {
  border-color: #86b7fe;
  outline: 0;
  box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-select:disabled {
  background-color: var(--bs-secondary-bg);
}

.form-select:-moz-focusring {
  color: transparent;
  text-shadow: 0 0 0 var(--bs-body-color);
}

/* Form Check (checkboxes and radios) */
.form-check {
  display: block;
  min-height: 1.5rem;
  padding-left: 1.5em;
  margin-bottom: 0.125rem;
}

.form-check .form-check-input {
  float: left;
  margin-left: -1.5em;
}

.form-check-input {
  --bs-form-check-bg: var(--bs-body-bg);
  flex-shrink: 0;
  width: 1em;
  height: 1em;
  margin-top: 0.25em;
  vertical-align: top;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-color: var(--bs-form-check-bg);
  background-image: var(--bs-form-check-bg-image);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  border: var(--bs-border-width) solid var(--bs-border-color);
  -webkit-print-color-adjust: exact;
  color-adjust: exact;
  print-color-adjust: exact;
}

.form-check-input[type=checkbox] {
  border-radius: 0.25em;
}

.form-check-input[type=radio] {
  border-radius: 50%;
}

.form-check-input:active {
  filter: brightness(90%);
}

.form-check-input:focus {
  border-color: #86b7fe;
  outline: 0;
  box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-check-input:checked {
  background-color: #0d6efd;
  border-color: #0d6efd;
}

.form-check-input:checked[type=checkbox] {
  --bs-form-check-bg-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='m6 10 3 3 6-6'/%3e%3c/svg%3e");
}

.form-check-input:checked[type=radio] {
  --bs-form-check-bg-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='2' fill='%23fff'/%3e%3c/svg%3e");
}

.form-check-input:disabled {
  pointer-events: none;
  filter: none;
  opacity: 0.5;
}

.form-check-input[disabled] ~ .form-check-label,
.form-check-input:disabled ~ .form-check-label {
  cursor: default;
  opacity: 0.5;
}

/* Custom brand color for focus state on form controls */
#search-input:focus,
#year-range-select:focus {
  border-color: #0073e6;
  box-shadow: 0 0 0 0.2rem rgba(0, 115, 230, 0.25);
}

/* ===== CLEAR ALL BUTTON ===== */

#clear-all-filters {
  color: #6c757d;
  font-size: 0.875rem;
  padding: 0.25rem 0.5rem;
}

#clear-all-filters:hover {
  color: #0073e6;
  text-decoration: underline !important;
}

/* ===== ANIMATION FOR FILTER UPDATES ===== */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.timetable-item {
  animation: fadeIn 0.3s ease;
}