.skills-page {
  --library-ink: #101419;
  --library-muted: #5c6672;
  --library-line: #dfe4e8;
  --library-soft: #f5f7f7;
  --library-panel: #ffffff;
  --library-accent: #0f766e;
  --library-accent-dark: #0b4f4a;
  --library-warm: #a15c11;
  --library-shadow: 0 16px 34px rgba(16, 20, 25, 0.08);
  min-height: 100dvh;
  color: var(--library-ink);
  background: #eef2f1;
}

.library-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 66px;
  padding: 12px 28px;
  border-bottom: 1px solid var(--library-line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.topbar-brand {
  display: inline-flex;
  align-items: center;
}

.topbar-brand img {
  width: 156px;
  height: auto;
  display: block;
}

.topbar-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--library-line);
  border-radius: 999px;
  background: #f9fbfb;
}

.topbar-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  color: #26313a;
  font-weight: 700;
  font-size: 0.92rem;
}

.topbar-nav a:hover,
.topbar-nav a.active {
  color: #fff;
  text-decoration: none;
  background: var(--library-accent);
}

.library-shell {
  display: grid;
  grid-template-columns: 284px minmax(0, 1fr);
  gap: 24px;
  width: min(1500px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 46px;
}

.library-sidebar {
  position: sticky;
  top: 90px;
  align-self: start;
  display: grid;
  gap: 16px;
  min-width: 0;
  max-height: calc(100dvh - 114px);
  overflow-x: hidden;
  overflow-y: auto;
  padding-right: 2px;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}

.sidebar-block {
  min-width: 0;
  border: 1px solid var(--library-line);
  border-radius: 8px;
  background: var(--library-panel);
  box-shadow: 0 10px 24px rgba(16, 20, 25, 0.05);
}

.sidebar-label {
  margin: 0;
  padding: 14px 16px 8px;
  color: var(--library-muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.tree-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  width: calc(100% - 16px);
  min-height: 38px;
  margin: 4px 8px;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 7px;
  color: #26313a;
  background: transparent;
  font: inherit;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.tree-row span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.tree-row strong {
  color: var(--library-muted);
  font-size: 0.82rem;
}

.tree-row:hover,
.tree-row.active {
  border-color: #b9d6d2;
  color: var(--library-accent-dark);
  background: #e7f4f1;
}

.tree-row.active strong {
  color: var(--library-accent-dark);
}

.tree-branch {
  margin-left: 15px;
  padding: 0 0 10px 12px;
  border-left: 1px solid var(--library-line);
}

.tree-row.platform {
  width: calc(100% - 8px);
  margin-left: 0;
}

.domain-tree {
  display: grid;
}

.sidebar-meter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 16px;
  border-top: 1px solid var(--library-line);
  color: var(--library-muted);
}

.sidebar-meter span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.sidebar-meter strong {
  color: var(--library-ink);
}

.sidebar-note {
  display: grid;
  gap: 5px;
  padding: 12px 16px;
  border-top: 1px solid var(--library-line);
}

.sidebar-note strong {
  color: var(--library-accent-dark);
}

.sidebar-note span {
  color: var(--library-muted);
  font-size: 0.86rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.sidebar-note code {
  color: #26313a;
  font-size: 0.82rem;
}

.library-main {
  min-width: 0;
}

.library-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 22px;
  align-items: end;
  padding: 28px;
  border: 1px solid var(--library-line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.12), rgba(255, 255, 255, 0) 45%),
    #ffffff;
  box-shadow: var(--library-shadow);
}

.library-kicker {
  margin: 0 0 8px;
  color: var(--library-accent-dark);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

.library-heading h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.library-lead {
  max-width: 760px;
  margin: 14px 0 0;
  color: var(--library-muted);
  font-size: 1.05rem;
}

.library-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.library-summary div {
  min-height: 86px;
  padding: 14px;
  border: 1px solid var(--library-line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.library-summary strong {
  display: block;
  color: var(--library-accent-dark);
  font-size: 1.65rem;
  line-height: 1.1;
}

.library-summary span {
  display: block;
  margin-top: 6px;
  color: var(--library-muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.library-controls {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(190px, 240px) auto;
  gap: 12px;
  align-items: end;
  margin: 18px 0 12px;
  padding: 14px;
  border: 1px solid var(--library-line);
  border-radius: 8px;
  background: var(--library-panel);
}

.library-search,
.library-select {
  display: grid;
  gap: 6px;
}

.library-search span,
.library-select span {
  color: var(--library-muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.library-search input,
.library-select select {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--library-line);
  border-radius: 7px;
  color: var(--library-ink);
  background: #fbfcfc;
  font: inherit;
}

.library-search input:focus,
.library-select select:focus {
  outline: 2px solid rgba(15, 118, 110, 0.24);
  border-color: var(--library-accent);
}

.view-toggle {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(64px, 1fr));
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--library-line);
  border-radius: 8px;
  background: #f4f7f7;
}

.view-toggle button {
  min-height: 34px;
  border: 0;
  border-radius: 6px;
  color: var(--library-muted);
  background: transparent;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.view-toggle button.active {
  color: #fff;
  background: var(--library-accent);
}

.active-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
  color: var(--library-muted);
  font-size: 0.94rem;
  font-weight: 800;
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.skill-grid.is-list {
  grid-template-columns: 1fr;
}

.skill-card {
  display: grid;
  min-height: 100%;
  border: 1px solid var(--library-line);
  border-radius: 8px;
  background: var(--library-panel);
  box-shadow: 0 10px 24px rgba(16, 20, 25, 0.05);
}

.skill-grid.is-list .skill-card {
  min-height: 0;
}

.skill-body {
  display: grid;
  grid-template-rows: auto auto minmax(84px, 1fr) auto auto;
  gap: 12px;
  min-height: 100%;
  padding: 18px;
}

.skill-domain {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--library-accent-dark);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.skill-domain span:last-child {
  color: var(--library-muted);
}

.skill-card h2 {
  margin: 0;
  color: var(--library-ink);
  font-size: 1.12rem;
  line-height: 1.28;
}

.skill-card p {
  margin: 0;
  color: var(--library-muted);
  font-size: 0.94rem;
  line-height: 1.52;
}

.skill-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.skill-meta div {
  min-height: 68px;
  padding: 9px;
  border: 1px solid #e4e9ec;
  border-radius: 7px;
  background: #f8faf9;
}

.skill-meta strong {
  display: block;
  color: var(--library-ink);
  line-height: 1.1;
}

.skill-meta span {
  display: block;
  margin-top: 4px;
  color: var(--library-muted);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.skill-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  color: #6f410b;
  background: #fff4e5;
  font-size: 0.76rem;
  font-weight: 800;
}

.skill-actions {
  display: flex;
  gap: 8px;
}

.skill-actions button {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--library-line);
  border-radius: 7px;
  color: var(--library-ink);
  background: #fff;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 800;
  cursor: pointer;
}

.skill-actions button:first-child {
  color: #fff;
  border-color: var(--library-accent);
  background: var(--library-accent);
}

.skill-actions button:hover {
  transform: translateY(-1px);
}

.empty-state {
  padding: 42px 22px;
  border: 1px dashed var(--library-line);
  border-radius: 8px;
  background: #fff;
  text-align: center;
}

.empty-state h2 {
  margin: 0 0 8px;
}

.empty-state p {
  margin: 0;
  color: var(--library-muted);
}

.skill-dialog {
  width: min(1380px, calc(100% - 28px));
  max-height: min(900px, calc(100dvh - 28px));
  padding: 0;
  border: 1px solid var(--library-line);
  border-radius: 8px;
  color: var(--library-ink);
  background: #fff;
  box-shadow: 0 30px 90px rgba(16, 20, 25, 0.24);
  overflow: visible;
}

.skill-dialog::backdrop {
  background: rgba(16, 20, 25, 0.42);
}

.dialog-close {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  width: 38px;
  height: 38px;
  border: 1px solid var(--library-line);
  border-radius: 50%;
  color: var(--library-ink);
  background: #fff;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}

.dialog-path {
  padding: 10px 12px;
  overflow-wrap: anywhere;
  border: 1px solid var(--library-line);
  border-radius: 7px;
  background: #f7f9f9;
  color: #26313a;
  font-size: 0.84rem;
}

.dialog-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 16px;
}

.dialog-stats div {
  padding: 10px;
  border: 1px solid var(--library-line);
  border-radius: 7px;
  background: #f8faf9;
}

.dialog-stats strong {
  display: block;
  color: var(--library-accent-dark);
}

.dialog-stats span {
  color: var(--library-muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.detail-header {
  padding: 28px 76px 22px 28px;
  border-bottom: 1px solid var(--library-line);
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.12), transparent 48%),
    #fff;
}

.detail-header h2 {
  max-width: 980px;
  margin: 0 0 10px;
  font-size: clamp(1.45rem, 2.4vw, 2.25rem);
  line-height: 1.15;
}

.detail-header p {
  max-width: 960px;
  margin: 0 0 14px;
  color: var(--library-muted);
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(340px, 1fr) minmax(300px, 0.9fr);
  gap: 14px;
  max-height: min(650px, calc(100dvh - 250px));
  padding: 14px;
  overflow: hidden;
  background: #eef2f1;
}

.detail-panel {
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--library-line);
  border-radius: 8px;
  background: #fff;
}

.detail-panel-title {
  padding: 14px 16px;
  border-bottom: 1px solid var(--library-line);
  background: #fbfcfc;
}

.detail-panel-title h3 {
  margin: 0;
  font-size: 0.98rem;
}

.detail-panel-title span {
  display: block;
  margin-top: 3px;
  color: var(--library-muted);
  font-size: 0.82rem;
}

.markdown-body,
.runtime-panel,
.images-panel {
  overflow-y: auto;
}

.markdown-body {
  max-height: calc(min(650px, calc(100dvh - 250px)) - 62px);
  padding: 16px;
  color: #27313a;
}

.markdown-body h3,
.markdown-body h4,
.markdown-body h5 {
  margin: 18px 0 8px;
  font-size: 1rem;
}

.markdown-body h3:first-child {
  margin-top: 0;
}

.markdown-body p,
.markdown-body li {
  color: var(--library-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.markdown-body ul {
  margin: 8px 0 14px;
  padding-left: 18px;
}

.markdown-body pre {
  margin: 12px 0;
  border-radius: 7px;
  box-shadow: none;
}

.markdown-body code,
.runtime-card code {
  border-radius: 4px;
  background: #eef3f2;
  color: #0b4f4a;
  font-size: 0.86em;
}

.runtime-panel,
.images-panel {
  max-height: calc(min(650px, calc(100dvh - 250px)));
}

.runtime-panel > .runtime-card,
.runtime-panel > .detail-muted {
  margin: 12px;
}

.runtime-card {
  border: 1px solid var(--library-line);
  border-radius: 8px;
  background: #fff;
}

.runtime-card + .runtime-card {
  margin-top: 10px;
}

.runtime-card summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  cursor: pointer;
  font-weight: 800;
}

.runtime-card summary em {
  padding: 3px 8px;
  border-radius: 999px;
  color: var(--library-accent-dark);
  background: #e7f4f1;
  font-size: 0.74rem;
  font-style: normal;
  text-transform: uppercase;
}

.runtime-card-body {
  display: grid;
  gap: 10px;
  padding: 0 12px 12px;
  color: var(--library-muted);
  font-size: 0.9rem;
}

.runtime-card-body p {
  margin: 0;
}

.runtime-card-body ul {
  margin: 6px 0 0;
  padding-left: 18px;
}

.runtime-views {
  display: grid;
  gap: 6px;
}

.runtime-views span {
  display: grid;
  gap: 2px;
  padding: 8px;
  overflow-wrap: anywhere;
  border: 1px solid #e3e8e7;
  border-radius: 7px;
  background: #f8faf9;
  color: #41505a;
  font-size: 0.78rem;
}

.runtime-views strong {
  color: var(--library-accent-dark);
  text-transform: uppercase;
}

.image-reference-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 12px;
}

.image-reference-card {
  position: relative;
  display: grid;
  gap: 7px;
  min-width: 0;
  padding: 8px;
  border: 1px solid var(--library-line);
  border-radius: 8px;
  background: #fff;
  color: var(--library-ink);
  cursor: zoom-in;
  font: inherit;
  text-align: left;
}

.image-reference-card:hover {
  text-decoration: none;
  border-color: #b9d6d2;
  transform: translateY(-1px);
}

.image-reference-card:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

.image-reference-card img,
.image-missing {
  width: 100%;
  aspect-ratio: 16 / 10;
  border: 1px solid #e1e6e5;
  border-radius: 6px;
  background: #dce5e3;
  object-fit: cover;
}

.image-missing {
  display: grid;
  place-items: center;
  color: var(--library-muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.image-reference-type {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 3px 7px;
  border-radius: 999px;
  color: #fff;
  background: rgba(16, 20, 25, 0.72);
  font-size: 0.68rem;
  font-weight: 900;
  text-transform: uppercase;
}

.image-reference-card strong {
  overflow: hidden;
  color: var(--library-ink);
  font-size: 0.86rem;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.image-reference-card small {
  overflow-wrap: anywhere;
  color: var(--library-muted);
  font-size: 0.72rem;
  line-height: 1.25;
}

.detail-muted {
  color: var(--library-muted);
}

.image-lightbox[hidden] {
  display: none;
}

.image-lightbox {
  position: fixed;
  z-index: 20;
  inset: 0;
  display: grid;
  place-items: center;
  box-sizing: border-box;
  margin: 0;
  padding: 32px;
  overflow: hidden;
  border: 0;
  background: transparent;
  color: #fff;
}

.lightbox-backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  border: 0;
  padding: 0;
  background: rgba(9, 18, 24, 0.58);
  cursor: zoom-out;
}

.lightbox-panel {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  width: min(1180px, calc(100vw - 96px));
  max-height: calc(100dvh - 64px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  background: #101820;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
}

.lightbox-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  color: #fff;
}

.lightbox-toolbar strong,
.lightbox-toolbar span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lightbox-toolbar strong {
  font-size: 0.94rem;
}

.lightbox-toolbar span {
  margin-top: 2px;
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.76rem;
}

.lightbox-toolbar button {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  cursor: pointer;
  font-size: 1.3rem;
  line-height: 1;
}

.lightbox-toolbar button:hover {
  background: rgba(255, 255, 255, 0.16);
}

.lightbox-canvas {
  display: grid;
  place-items: center;
  min-height: 0;
  overflow: hidden;
  padding: 16px;
  background: #070d12;
}

.lightbox-canvas img {
  display: block;
  width: auto;
  max-width: min(1148px, calc(100vw - 128px));
  height: auto;
  max-height: calc(100dvh - 152px);
  margin: 0 auto;
  object-fit: contain;
  image-rendering: auto;
}

.lightbox-open {
  overflow: hidden;
}

@media (max-width: 1180px) {
  .skill-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1100px) {
  .library-shell {
    grid-template-columns: 1fr;
  }

  .library-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
    padding-right: 0;
  }

  .domain-tree {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .library-heading,
  .library-controls,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .skill-grid,
  .skill-grid.is-list {
    grid-template-columns: 1fr;
  }

  .detail-grid {
    max-height: none;
    overflow: visible;
  }

  .markdown-body,
  .runtime-panel,
  .images-panel {
    max-height: 520px;
  }
}

@media (max-width: 640px) {
  .library-topbar {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 16px;
  }

  .topbar-nav {
    width: 100%;
    overflow-x: auto;
  }

  .library-shell {
    width: min(100% - 20px, 1500px);
    padding-top: 14px;
  }

  .tree-branch {
    margin-left: 8px;
    padding-left: 8px;
  }

  .tree-row {
    gap: 8px;
    min-height: 36px;
    padding: 0 8px;
  }

  .library-heading,
  .library-controls {
    padding: 16px;
  }

  .library-summary,
  .skill-meta,
  .dialog-stats,
  .image-reference-grid,
  .domain-tree {
    grid-template-columns: 1fr;
  }

  .detail-header {
    padding: 22px 62px 18px 18px;
  }

  .active-filter-bar {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .image-lightbox {
    padding: 14px;
  }

  .lightbox-panel {
    width: calc(100vw - 28px);
    max-height: calc(100dvh - 28px);
  }

  .lightbox-canvas {
    padding: 10px;
  }

  .lightbox-canvas img {
    max-width: calc(100vw - 48px);
    max-height: calc(100dvh - 122px);
  }
}