/* Reusable UI components */

/* ===== Card Component ===== */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.card:hover {
  background-color: var(--color-surface-hover);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Card urgency states */
.card--normal {
  border-left-color: var(--color-normal);
}

.card--attention {
  border-left-color: var(--color-attention);
  background: linear-gradient(to right, rgba(255, 213, 79, 0.05), transparent);
}

.card--warning {
  border-left-color: var(--color-warning);
  background: linear-gradient(to right, rgba(255, 152, 0, 0.05), transparent);
}

.card--urgent {
  border-left-color: var(--color-urgent);
  background: linear-gradient(to right, rgba(239, 83, 80, 0.05), transparent);
  animation: pulse-urgent 2s ease-in-out infinite;
}

.card--past {
  border-left-color: var(--color-past);
  opacity: 0.6;
}

@keyframes pulse-urgent {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(239, 83, 80, 0.4);
  }
  50% {
    box-shadow: 0 0 0 4px rgba(239, 83, 80, 0);
  }
}

/* Card content structure */
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.card-title-group {
  flex: 1;
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}

.card-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  margin: 0;
}

.card-year {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.card-meta {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  flex-wrap: wrap;
}

.card-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  transition: transform var(--transition-fast);
}

.card-link:hover {
  transform: scale(1.2);
}

.card-countdown {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  white-space: nowrap;
  color: var(--color-text-primary);
}

.card-countdown--normal {
  color: var(--color-normal);
}

.card-countdown--attention {
  color: var(--color-attention);
}

.card-countdown--warning {
  color: var(--color-warning);
}

.card-countdown--urgent {
  color: var(--color-urgent);
}

.card-countdown--past {
  color: var(--color-past);
}

.card-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.card-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.card-dates {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.card-location {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.card-deadlines {
  display: flex;
  gap: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.card-deadline-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.card-deadline-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  opacity: 0.75;
}

.card-deadline-value {
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

/* Card footer with timeline (optional) */
.card-footer {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.timeline-bar {
  height: 24px;
  background-color: var(--color-surface-hover);
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
}

.timeline-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  position: absolute;
  left: 0;
  top: 0;
}

.timeline-marker {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 16px;
  background-color: var(--color-accent);
  border-radius: 1px;
}

.timeline-label {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  position: absolute;
  bottom: -20px;
}

/* ===== Badge Component ===== */
.badge {
  display: inline-block;
  padding: var(--space-2) var(--space-3);
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  white-space: nowrap;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.badge--ml {
  background-color: rgba(124, 77, 255, 0.15);
  color: var(--color-cat-ml);
}

.badge--cv {
  background-color: rgba(0, 188, 212, 0.15);
  color: var(--color-cat-cv);
}

.badge--nlp {
  background-color: rgba(76, 175, 80, 0.15);
  color: var(--color-cat-nlp);
}

.badge--dm {
  background-color: rgba(255, 112, 67, 0.15);
  color: var(--color-cat-dm);
}

.badge--se {
  background-color: rgba(240, 98, 146, 0.15);
  color: var(--color-cat-se);
}

/* ===== Chip Component (multi-select buttons) ===== */
.chip {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background-color: transparent;
  color: var(--color-text-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  user-select: none;
}

.chip input[type="checkbox"] {
  margin-right: var(--space-2);
  cursor: pointer;
}

.chip:hover {
  background-color: var(--color-surface-hover);
  border-color: var(--color-accent);
}

.chip input[type="checkbox"]:checked + span {
  color: var(--color-accent);
}

.chip--active {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
}

.chip--active input[type="checkbox"] {
  accent-color: white;
}

/* ===== Toggle Component ===== */
.toggle {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  background-color: transparent;
  color: var(--color-text-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  user-select: none;
}

.toggle:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.toggle:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  border-left: none;
}

.toggle input[type="radio"] {
  margin-right: var(--space-2);
  cursor: pointer;
}

.toggle:hover {
  background-color: var(--color-surface-hover);
}

.toggle input[type="radio"]:checked {
  accent-color: var(--color-accent);
}

.toggle input[type="radio"]:checked + span {
  color: var(--color-accent);
}

.toggle-group {
  display: flex;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: var(--space-12);
  color: var(--color-text-secondary);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.empty-state-text {
  margin-bottom: 0;
}

/* ===== Loading State ===== */
.loading {
  text-align: center;
  padding: var(--space-8);
  color: var(--color-text-secondary);
}

@media (max-width: 640px) {
  .card-header {
    flex-direction: column;
    gap: var(--space-2);
  }

  .card-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .card-deadlines {
    gap: var(--space-4);
  }

  .card-footer {
    display: none;
  }
}