/**
 * Projects Page Styles
 * ====================
 * Styles specific to the projects/experience page.
 */

/* ===========================================
   PAGE HEADER
   =========================================== */

.projects-header {
  padding: var(--space-32) 0 var(--space-12);
  background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

/* ===========================================
   FILTER BAR
   =========================================== */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
  margin-bottom: var(--space-12);
}

.filter-btn {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.filter-btn:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}

.filter-btn.active {
  color: var(--color-accent);
  background: var(--color-info-bg);
  border-color: var(--color-accent);
}

/* ===========================================
   CAREER TIMELINE
   =========================================== */

.career-timeline {
  position: relative;
  padding: var(--space-8) 0;
  margin-bottom: var(--space-12);
}

.career-timeline__line {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-border-default);
  transform: translateY(-50%);
}

.career-timeline__events {
  display: flex;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}

.timeline-event {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.timeline-event__dot {
  width: 16px;
  height: 16px;
  background: var(--color-bg-primary);
  border: 3px solid var(--color-accent);
  border-radius: 50%;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.timeline-event:hover .timeline-event__dot {
  transform: scale(1.3);
  background: var(--color-accent);
}

.timeline-event__year {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
}

.timeline-event__label {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-align: center;
  max-width: 80px;
}

/* Mobile timeline */
@media (max-width: 768px) {
  .career-timeline {
    display: none;
  }
}

/* ===========================================
   PROJECT CARDS
   =========================================== */

.projects-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.project-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal);
}

.project-card:hover {
  border-color: var(--color-border-strong);
}

.project-card.expanded {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
}

/* Project Card Header */
.project-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: var(--space-6);
  cursor: pointer;
}

@media (min-width: 768px) {
  .project-card__header {
    align-items: center;
  }
}

.project-card__title-group {
  flex: 1;
}

.project-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.project-card__company {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.project-card__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
}

@media (min-width: 768px) {
  .project-card__meta {
    flex-direction: row;
    align-items: center;
    gap: var(--space-4);
  }
}

.project-card__date {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.project-card__badge {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-accent);
  background: var(--color-info-bg);
  border-radius: var(--radius-full);
}

/* Project Card Body */
.project-card__body {
  padding: 0 var(--space-6) var(--space-6);
}

.project-card__role {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.project-card__role-badge {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
}

.project-card__highlights {
  margin-bottom: var(--space-4);
}

.project-card__highlights li {
  position: relative;
  padding-left: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-2);
}

.project-card__highlights li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Project Card Toggle */
.project-card__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-tertiary);
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border-subtle);
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.project-card__toggle:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-hover);
}

.project-card__toggle svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.project-card.expanded .project-card__toggle svg {
  transform: rotate(180deg);
}

/* Project Card Details (Always Visible) */
.project-card__details {
  display: block;
  padding: var(--space-6);
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border-subtle);
}

.project-card__details-grid {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .project-card__details-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.detail-block__title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.detail-block__content {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ===========================================
   STATS ROW
   =========================================== */

.project-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  padding: var(--space-4);
  background: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.project-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.project-stat__value {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-accent-light);
}

.project-stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
}

/* ===========================================
   PROJECT CARD FOOTER
   =========================================== */

.project-card__footer {
  display: flex;
  justify-content: flex-end;
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-bg-surface);
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.project-card__link:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-hover);
}

.project-card__link svg {
  flex-shrink: 0;
}

/* ===========================================
   EMPTY STATE
   =========================================== */

.projects-empty {
  text-align: center;
  padding: var(--space-16) var(--space-4);
}

.projects-empty__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.projects-empty__text {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}