/* ============================================
   COMPONENTS — Nav, Footer, Cards, Tags, Embeds
   ============================================ */

/* --- Site Header / Nav --- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
}

.nav__logo:hover {
  color: var(--color-text);
}

.nav__links {
  display: flex;
  gap: var(--space-6);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-text);
}

/* --- Footer --- */

.site-footer {
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-12);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copyright {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.footer-links {
  display: flex;
  gap: var(--space-5);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.footer-links a:hover {
  color: var(--color-text);
}

/* --- Project Card --- */

.project-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.project-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.project-card__link {
  display: block;
  color: inherit;
}

.project-card__image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-tag-bg);
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card__image img {
  transform: scale(1.02);
}

.project-card__info {
  padding: var(--space-5);
}

.project-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-2);
}

.project-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

/* --- Tags --- */

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

.tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-tag-text);
  background: var(--color-tag-bg);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
}

/* --- Figma Embed --- */

.figma-embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-block: var(--space-8);
  background-color: var(--color-tag-bg);
}

.figma-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.figma-embed--tall {
  padding-bottom: 75%; /* 4:3 */
}

/* --- Inline Link Arrow --- */

.link-arrow {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.link-arrow:hover {
  color: var(--color-text-secondary);
}

/* --- Back Link --- */

.back-link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.back-link:hover {
  color: var(--color-text);
}

/* --- Image Container --- */

.image-full {
  margin-block: var(--space-8);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-tag-bg);
}

.image-full img {
  width: 100%;
  height: auto;
}