/* ============================================================
   COMPONENTS — Filters, Cards, Carousel, Modal
   ============================================================ */

/* ============================================================
   FILTERS BAR
   ============================================================ */

.filters-section {
  margin-bottom: 2rem;
}

.filters-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  align-items: start;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

/* Right-hand group aligns its chips to the left too,
   keeping visual weight balanced */
.filter-group-right {
  /* no special treatment needed — grid column handles position */
}

.filter-group-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

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

.filter-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  font-weight: 600;
}

.filter-chip .chip-count {
  font-size: 0.68rem;
  opacity: 0.7;
}

.filter-chip.active .chip-count {
  opacity: 0.8;
}

/* .filters-divider is no longer rendered — kept for safety */
.filters-divider { display: none; }

/* Footer row: active badge pills on the left, clear button on the right */
.filters-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 0.6rem;
  min-height: 1.5rem; /* prevents layout jump when clear button appears */
}

.filters-clear {
  flex-shrink: 0;
}

/* Active filter indicators — lives inside .filters-footer */
.active-filters-bar {
  display: none;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  flex: 1;
  min-width: 0;
}

.active-filters-bar.visible {
  display: flex;
}

.active-filter-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: 999px;
  font-size: 0.72rem;
  color: var(--accent);
}

.active-filter-tag button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--accent);
  font-size: 0.9rem;
  line-height: 1;
  padding: 0;
  display: flex;
  align-items: center;
  opacity: 0.7;
  transition: opacity var(--transition);
}
.active-filter-tag button:hover { opacity: 1; }

/* ============================================================
   PROJECT GRID
   ============================================================ */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

/* Empty state */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.3;
}

.empty-state p {
  margin-bottom: 1rem;
}

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

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition),
              border-color var(--transition), background-color var(--transition-slow);
  display: flex;
  flex-direction: column;
  position: relative;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.project-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Featured badge */
.card-featured-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 2;
  background: var(--accent);
  color: #000;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

/* ── Card Carousel ── */
.card-carousel {
  position: relative;
  background: var(--surface-2);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  flex-shrink: 0;
}

.carousel-track {
  display: flex;
  height: 100%;
  transition: transform 0.4s ease;
  will-change: transform;
}

.carousel-slide {
  flex: 0 0 100%;
  height: 100%;
  overflow: hidden;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.card-carousel:hover .carousel-slide img {
  transform: scale(1.03);
}

.carousel-no-image {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-faint);
  font-size: 0.8rem;
}

.carousel-no-image svg {
  opacity: 0.3;
}

/* Carousel buttons */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  background: rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #fff;
  opacity: 0;
  transition: opacity var(--transition), background var(--transition);
}

.card-carousel:hover .carousel-btn { opacity: 1; }
.carousel-btn:hover { background: rgba(0,0,0,0.75); }
.carousel-btn.prev { left: 0.5rem; }
.carousel-btn.next { right: 0.5rem; }
.carousel-btn:disabled { opacity: 0 !important; cursor: default; }

/* Carousel dots */
.carousel-dots {
  position: absolute;
  bottom: 0.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.3rem;
  z-index: 3;
}

.carousel-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition);
}

.carousel-dot.active {
  background: var(--accent);
  transform: scale(1.3);
}

/* ── Card Body ── */
.card-body {
  padding: 1.1rem 1.2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-date {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.card-lang-pills {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.card-lang-pill {
  font-size: 0.62rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  border: 1px solid var(--border);
  color: var(--text-faint);
  background: transparent;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.card-description {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* ── Card Tags ── */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
  padding-top: 0.4rem;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--surface-2);
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

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

.tag-chip.active-filter {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* Card view-more link */
.card-footer {
  padding: 0 1.2rem 1.1rem;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.card-view-more {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: gap var(--transition);
}
.project-card:hover .card-view-more { gap: 0.45rem; }

/* ============================================================
   NOTE CARD
   ============================================================ */

.note-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition),
              border-color var(--transition), background-color var(--transition-slow);
  display: flex;
  flex-direction: column;
  position: relative;
}

.note-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.note-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Left accent border */
.note-card-accent {
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent);
  border-radius: var(--radius) 0 0 var(--radius);
}

/* Optional single image for notes */
.note-card-image {
  aspect-ratio: 21 / 9;
  overflow: hidden;
  flex-shrink: 0;
}

.note-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.note-card:hover .note-card-image img {
  transform: scale(1.03);
}

/* Note card body — extra left padding to clear accent bar */
.note-card .card-body {
  padding-left: 1.5rem;
}

/* Note description: more visible lines (5 instead of 3) */
.note-card .card-description {
  -webkit-line-clamp: 5;
}

/* Note type indicator via pseudo-element */
.note-card .card-title::before {
  content: '✏️';
  margin-right: 0.4rem;
  font-size: 0.9em;
}

/* Related project chips */
.note-related {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding-top: 0.25rem;
}

.note-related-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 500;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
}

.note-related-chip:hover {
  background: var(--accent);
  color: #000;
}

/* Note card animation */
.note-card {
  animation: cardIn 0.35s ease both;
}

/* Note card footer uses same style */
.note-card .card-view-more { color: var(--accent); }
.note-card:hover .card-view-more { gap: 0.45rem; }

/* ============================================================
   PROJECT MODAL
   ============================================================ */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  z-index: var(--z-modal-bg);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-panel {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  pointer-events: none;
}

.modal-inner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 860px;
  max-height: 90vh;
  overflow-y: auto;
  overflow-x: hidden;
  transform: translateY(24px) scale(0.97);
  opacity: 0;
  transition: transform var(--transition-slow), opacity var(--transition-slow);
  pointer-events: none;
}

.modal-backdrop.open .modal-inner {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: auto;
}

/* Modal header */
.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 1.5rem 0;
  position: sticky;
  top: 0;
  background: var(--surface);
  z-index: 2;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}

.modal-title-block {
  flex: 1;
  min-width: 0;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.modal-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.4rem;
  flex-wrap: wrap;
}

.modal-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.modal-close {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: all var(--transition);
}
.modal-close:hover {
  background: var(--surface-hover);
  color: var(--text);
  border-color: var(--text-faint);
}

/* Modal body */
.modal-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

/* Image mosaic */
.modal-images {
  display: grid;
  gap: 0.75rem;
}

.modal-images.count-1 { grid-template-columns: 1fr; }
.modal-images.count-2 { grid-template-columns: 1fr 1fr; }
.modal-images.count-3 { grid-template-columns: 2fr 1fr; grid-template-rows: 1fr 1fr; }
.modal-images.count-3 .modal-img-wrap:first-child { grid-row: 1 / 3; }
.modal-images.count-4,
.modal-images.count-more { grid-template-columns: 1fr 1fr; }

.modal-img-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface-2);
  cursor: zoom-in;
  aspect-ratio: 16 / 9;
}

.modal-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.modal-img-wrap:hover img { transform: scale(1.04); }

/* Modal section labels */
.modal-section-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

/* Modal description (Markdown) */
.modal-description {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.modal-description h1,
.modal-description h2,
.modal-description h3,
.modal-description h4 {
  font-family: var(--font-heading);
  color: var(--text);
  margin: 1.25rem 0 0.5rem;
  line-height: 1.3;
}
.modal-description h1 { font-size: 1.3rem; font-weight: 800; }
.modal-description h2 { font-size: 1.1rem; font-weight: 700; border-bottom: 1px solid var(--border); padding-bottom: 0.4rem; }
.modal-description h3 { font-size: 0.95rem; font-weight: 700; }
.modal-description h4 { font-size: 0.85rem; font-weight: 600; }

.modal-description p { margin-bottom: 0.75rem; }

.modal-description ul,
.modal-description ol {
  padding-left: 1.4rem;
  margin-bottom: 0.75rem;
}
.modal-description li { margin-bottom: 0.25rem; }

.modal-description code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  background: var(--surface-2);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  color: var(--accent);
}

.modal-description pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 0.75rem;
}
.modal-description pre code {
  background: none;
  padding: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.modal-description blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.5rem 1rem;
  margin: 0.75rem 0;
  background: var(--accent-glow);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted);
}

.modal-description a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.modal-description table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
}
.modal-description th,
.modal-description td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  text-align: left;
}
.modal-description th {
  background: var(--surface-2);
  font-weight: 600;
  color: var(--text);
}

.modal-description hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1rem 0;
}

/* Modal links */
.modal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.modal-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition);
}

.modal-link:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent);
}

.modal-link.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #000;
  font-weight: 600;
}
.modal-link.primary:hover {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  color: #000;
}

/* Modal tags */
.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* Modal project langs */
.modal-proj-langs {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Language switch buttons in modal */
.lang-switch-btn {
  cursor: pointer;
  border: 1px solid transparent;
  background: none;
  transition: all var(--transition-fast);
}
.lang-switch-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.lang-switch-btn.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

/* Lightbox (image zoom) */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  cursor: zoom-out;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}
.lightbox.open {
  opacity: 1;
  pointer-events: auto;
}
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

/* ============================================================
   LOADING / SKELETON
   ============================================================ */

@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--surface-2) 25%,
    var(--surface-hover) 50%,
    var(--surface-2) 75%
  );
  background-size: 800px 100%;
  animation: shimmer 1.4s infinite linear;
  border-radius: var(--radius-sm);
}

.skeleton-card {
  height: 380px;
  border-radius: var(--radius);
}

/* ============================================================
   RESPONSIVE — COMPONENTS
   ============================================================ */

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

  .modal-panel { padding: 0; align-items: flex-end; }
  .modal-inner {
    max-height: 92vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    max-width: 100%;
  }

  .modal-images.count-2,
  .modal-images.count-3,
  .modal-images.count-4,
  .modal-images.count-more {
    grid-template-columns: 1fr;
  }
  .modal-images.count-3 .modal-img-wrap:first-child { grid-row: auto; }

  /* Filters: reduce gap on small screens, grid stays 2-col */
  .filters-row { gap: 0.75rem; }
  .filters-footer { flex-wrap: wrap; }
}

@media (min-width: 900px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (min-width: 1200px) {
  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  }
}

/* ============================================================
   TRANSITIONS — page load
   ============================================================ */

.project-card {
  animation: cardIn 0.35s ease both;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}