/**
 * ERMS Public Events - HKUST Style
 * Matching HKUST Events Calendar Design
 */

:root {
  /* HKUST Color Scheme (from reference image) */
  --color-primary: #1a4d8f;
  --color-primary-light: #2563a8;
  --color-accent: #4a90e2;
  --color-text: #2d3748;
  --color-text-light: #64748b;
  --color-text-lighter: #94a3b8;
  --color-bg: #f5f7fa;
  --color-bg-alt: #ffffff;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-shadow: rgba(0, 0, 0, 0.05);
  --color-shadow-medium: rgba(0, 0, 0, 0.1);

  /* HMAW Badge */
  --color-success: #059669;
  --color-success-light: #d1fae5;

  /* Category Colors */
  --color-category-bg: #f8fafc;
  --color-category-text: #475569;

  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Segoe UI', -apple-system, system-ui, sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --transition: 0.2s ease;
}

/* ============================================
   Base Layout
   Scoped to .view-public-event-list to avoid conflicts with admin theme
   ============================================ */

.view-public-event-list,
.view-public-event-list {
  min-height: 100vh;
  background-color: var(--color-bg);
  padding: var(--spacing-xl) 0;
}

.events-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: 320px 1fr 280px;
  gap: var(--spacing-xl);
  align-items: start;
}

/* ============================================
   Breadcrumb
   ============================================ */

.events-breadcrumb {
  grid-column: 1 / -1;
  margin-bottom: var(--spacing-md);
}

.view-public-event-list .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-text-light);
  list-style: none;
  padding: 0;
  margin: 0;
}

.view-public-event-list .breadcrumb-item a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

.view-public-event-list .breadcrumb-item a:hover {
  color: var(--color-accent);
}

.view-public-event-list .breadcrumb-separator {
  color: var(--color-text-lighter);
  margin: 0 var(--spacing-xs);
}

/* ============================================
   Page Header
   ============================================ */

.events-page-header {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

.view-public-event-list .page-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
  letter-spacing: -0.02em;
}

.view-toggle {
  display: flex;
  gap: var(--spacing-sm);
}

.view-toggle-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  color: var(--color-text-light);
  font-size: 1.25rem;
}

.view-toggle-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.view-toggle-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* ============================================
   Filters Sidebar (Left) - Reference Image 2 Style
   ============================================ */

.events-filters {
  position: sticky;
  top: var(--spacing-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 2px 8px var(--color-shadow);
  border: 1px solid var(--color-border);
}

.filters-header {
  margin-bottom: var(--spacing-lg);
}

.filters-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 var(--spacing-md) 0;
}

/* ============================================
   Filter Sections - Collapsible Style (Reference Image 2)
   ============================================ */

.filters-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.filter-section {
  border-bottom: 1px solid var(--color-border-light);
  padding-bottom: var(--spacing-lg);
}

.filter-section:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

/* Collapsible Header */
.filter-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  margin-bottom: var(--spacing-md);
  transition: color var(--transition);
}

.filter-toggle:hover {
  color: var(--color-primary);
}

.toggle-arrow {
  font-size: 1.25rem;
  color: var(--color-text-light);
  transition: transform var(--transition);
  line-height: 1;
}

.filter-section.collapsed .toggle-arrow {
  transform: rotate(180deg);
}

/* Collapsible Content */
.filter-content {
  display: block;
  transition: all 0.3s ease;
}

.filter-section.collapsed .filter-content {
  display: none;
}

/* ============================================
   Filter Inputs - Rounded Style (Reference Image 2)
   ============================================ */

/* Search Input with Icon */
.filter-input-wrapper {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.filter-input {
  width: 100%;
  padding: var(--spacing-md);
  padding-left: 3rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  font-size: 0.9375rem;
  transition: all var(--transition);
  background: var(--color-bg-alt);
  font-family: var(--font-primary);
  color: var(--color-text);
}

.filter-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.filter-input::placeholder {
  color: var(--color-text-lighter);
}

.input-icon {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-lighter);
  font-size: 1.125rem;
  pointer-events: none;
}

/* Date Range - Two Inputs Side by Side */
.date-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
}

.date-field {
  position: relative;
}

.date-field .filter-input {
  padding-left: 2.5rem;
  font-size: 0.875rem;
}

.date-field .input-icon {
  font-size: 1rem;
  left: 0.75rem;
}

/* Select Dropdown */
.filter-select {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  font-size: 0.9375rem;
  background: var(--color-bg-alt);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-primary);
  color: var(--color-text);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%2394a3b8' d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
}

.filter-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

/* ============================================
   Checkboxes - Clean Style (Reference Image 2)
   ============================================ */

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  cursor: pointer;
  padding: var(--spacing-sm) 0;
  transition: color var(--transition);
  font-size: 0.9375rem;
  color: var(--color-text);
}

.checkbox-label:hover {
  color: var(--color-primary);
}

.checkbox-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
  accent-color: var(--color-primary);
}

/* Show More Button */
.show-more-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: transparent;
  border: none;
  color: #ef4444;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  padding: var(--spacing-sm) 0;
  margin-top: var(--spacing-sm);
  transition: opacity var(--transition);
}

.show-more-btn:hover {
  opacity: 0.8;
}

.show-more-icon {
  font-size: 1.125rem;
  transition: transform var(--transition);
}

.show-more-btn.expanded .show-more-icon {
  transform: rotate(180deg);
}

/* ============================================
   Toggle Switch
   ============================================ */

.toggle-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  cursor: pointer;
  user-select: none;
  padding: var(--spacing-sm) 0;
}

.toggle-input {
  position: absolute;
  opacity: 0;
}

.toggle-slider {
  width: 48px;
  height: 26px;
  background: var(--color-border);
  border-radius: 13px;
  position: relative;
  transition: background var(--transition);
  flex-shrink: 0;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
  top: 3px;
  left: 3px;
  transition: transform var(--transition);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-input:checked + .toggle-slider {
  background: var(--color-primary);
}

.toggle-input:checked + .toggle-slider::before {
  transform: translateX(22px);
}

.toggle-text {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
}

/* ============================================
   Apply Filters Button
   ============================================ */

.filter-submit {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-xl);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: all var(--transition);
  margin-top: var(--spacing-lg);
}

.filter-submit:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 77, 143, 0.3);
}

.filter-submit:active {
  transform: translateY(0);
}

/* Clear Filters Link */
.filters-reset {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: transparent;
  border: none;
  color: var(--color-accent);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  padding: var(--spacing-sm) 0;
  margin-bottom: var(--spacing-md);
  transition: all var(--transition);
  text-decoration: underline;
}

.filters-reset:hover {
  color: var(--color-primary);
}

/* ============================================
   Event Cards Grid - Reference Image 1 Style
   ============================================ */

.events-main {
  min-height: 600px;
}

.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.event-card {
  position: relative;
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 1px 3px var(--color-shadow);
  transition: all var(--transition);
  cursor: pointer;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.event-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--color-shadow-medium);
}

/* Event Banner - Larger as in Reference Image 1 */
.event-banner {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: linear-gradient(135deg, #e0e7ff 0%, #f5f7fa 100%);
}

.event-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.event-card:hover .event-banner img {
  transform: scale(1.05);
}

.banner-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
}

.placeholder-icon {
  font-size: 4rem;
  opacity: 0.3;
  filter: brightness(2);
}

/* HMAW1905 Badge - Top Right Corner */
.hmaw-badge {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 10;
  background: var(--color-success);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.75rem;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(5, 150, 105, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hmaw-icon {
  font-size: 0.875rem;
}

/* Event Content */
.event-content {
  padding: var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Category Tags - Above Title (Reference Image 1) */
.event-categories {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.event-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-category-text);
  background: var(--color-category-bg);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

/* Event Title */
.event-title {
  margin: 0 0 var(--spacing-md) 0;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
}

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

.event-title a:hover {
  color: var(--color-primary);
}

/* Event Meta Information */
.event-meta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.meta-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

.meta-icon {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Event Organizer */
.event-organizer {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-top: auto;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
}

.event-organizer strong {
  color: var(--color-text);
  font-weight: 500;
}

/* ============================================
   Calendar Sidebar (Right)
   ============================================ */

.events-calendar {
  position: sticky;
  top: var(--spacing-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: 0 1px 3px var(--color-shadow);
  border: 1px solid var(--color-border);
}

.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.calendar-month {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
}

.calendar-nav {
  display: flex;
  gap: var(--spacing-xs);
}

.calendar-nav-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  color: var(--color-text-light);
  font-size: 1rem;
  line-height: 1;
}

.calendar-nav-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.25rem;
  margin-bottom: var(--spacing-lg);
}

.calendar-day-header {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-lighter);
  padding: var(--spacing-sm) 0;
  text-transform: uppercase;
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.calendar-day:hover {
  background: var(--color-border-light);
}

.calendar-day.today {
  background: var(--color-primary);
  color: white;
  font-weight: 700;
}

.calendar-day.has-events::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 50%;
}

.calendar-day.other-month {
  color: var(--color-text-lighter);
  opacity: 0.4;
}

/* Post an Event CTA */
.post-event-cta {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
}

.post-event-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 var(--spacing-sm) 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.post-event-text {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin: 0;
}

/* ============================================
   Pagination
   ============================================ */

.events-pagination {
  display: flex;
  justify-content: center;
  padding: var(--spacing-xl) 0;
}

.view-public-event-list .pager {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  list-style: none;
  padding: 0;
  margin: 0;
}

.view-public-event-list .pager__item {
  margin: 0;
}

.view-public-event-list .pager__item a,
.view-public-event-list .pager__item.is-active {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition);
  border: 2px solid var(--color-border);
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.view-public-event-list .pager__item a:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.view-public-event-list .pager__item.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  cursor: default;
}

/* ============================================
   Empty State
   ============================================ */

.events-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-xl);
  background: var(--color-bg-alt);
  border-radius: var(--radius-xl);
  box-shadow: 0 1px 3px var(--color-shadow);
}

.empty-icon {
  font-size: 5rem;
  opacity: 0.2;
  margin-bottom: var(--spacing-lg);
}

.empty-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-text);
  margin: 0 0 var(--spacing-md) 0;
}

.empty-text {
  font-size: 1rem;
  color: var(--color-text-light);
  margin: 0 0 var(--spacing-xl) 0;
}

.empty-action {
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-xl);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.empty-action:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1280px) {
  .events-container {
    grid-template-columns: 280px 1fr;
  }

  .events-calendar {
    display: none;
  }
}

@media (max-width: 1024px) {
  .events-container {
    grid-template-columns: 260px 1fr;
    gap: var(--spacing-lg);
  }

  .events-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .events-container {
    grid-template-columns: 1fr;
  }

  .events-filters {
    position: relative;
    top: 0;
  }

  .events-grid {
    grid-template-columns: 1fr;
  }

  .view-public-event-list .page-title {
    font-size: 2rem;
  }

  .events-page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .view-public-event-list {
    padding: var(--spacing-lg) 0;
  }

  .events-container {
    padding: 0 var(--spacing-md);
  }

  .events-filters {
    padding: var(--spacing-lg);
  }

  .view-public-event-list .page-title {
    font-size: 1.75rem;
  }

  .event-banner {
    height: 180px;
  }

  .filter-submit {
    font-size: 0.9375rem;
  }
}