/* ===== Base & Variables ===== */
:root {
  --color-bg: #f9fafb;
  --color-surface: #ffffff;
  --color-border: #e5e7eb;
  --color-text-primary: #111827;
  --color-text-secondary: #4b5563;
  --color-text-muted: #6b7280;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

/* ===== Layout ===== */
.main-content {
  background: var(--color-bg);
  min-height: calc(100vh - 200px);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 50;
  animation: slideIn 0.2s ease;
}

.toast-success {
  border-left: 4px solid #10b981;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

/* ===== Hero ===== */
.hero {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 2.5rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.hero p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

/* ===== Events Section ===== */
.events-section {
  padding: 2.5rem 0;
}

/* ===== Filter Bar ===== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.filter-group {
  display: flex;
  flex-direction: column;
  min-width: 140px;
  flex: 1 1 auto;
}

.filter-group label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.filter-group select,
.filter-group .search-wrapper input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  background: var(--color-surface);
  transition: border-color 0.15s;
}

.filter-group select:focus,
.filter-group .search-wrapper input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-wrapper i {
  position: absolute;
  left: 0.75rem;
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.search-wrapper input {
  padding-left: 2.5rem;
}

.filter-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-left: auto;
}

@media (max-width: 768px) {
  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .filter-actions {
    margin-left: 0;
    justify-content: flex-end;
  }
}

/* ===== Results Meta ===== */
.results-meta {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

/* ===== Card Grid ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

/* ===== Card ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.1s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-image-link {
  display: block;
  overflow: hidden;
  height: 180px;
}

.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card:hover .card-image {
  transform: scale(1.02);
}

.card-content {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.tag {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  color: var(--color-text-secondary);
}

.tag-muted {
  background: transparent;
  color: var(--color-text-muted);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.75rem 0;
  line-height: 1.4;
}

.card-title a {
  color: var(--color-text-primary);
  text-decoration: none;
}

.card-title a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.card-meta i {
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.card-description {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin: 0.5rem 0 1rem 0;
  line-height: 1.5;
  flex: 1;
}

.card-actions {
  margin-top: auto;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.5;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-outline:hover {
  background: var(--color-bg);
  border-color: var(--color-text-muted);
}

.btn-sm {
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.pagination-prev,
.pagination-next,
.pagination-number {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-size: 0.875rem;
  text-decoration: none;
  transition: background 0.15s;
}

.pagination-prev:hover:not(.disabled),
.pagination-next:hover:not(.disabled),
.pagination-number:hover:not(.active) {
  background: var(--color-bg);
}

.pagination-number.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.pagination-prev.disabled,
.pagination-next.disabled {
  opacity: 0.5;
  pointer-events: none;
}

.pagination-numbers {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  flex-wrap: wrap;
}

.pagination-ellipsis {
  padding: 0 0.25rem;
  color: var(--color-text-muted);
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
}

.empty-state i {
  width: 48px;
  height: 48px;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.empty-state h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.empty-state p {
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

/* ===== Utilities ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}