/* === Header: dark premium gradient === */
.md-header {
  background: #161b22 !important;
  box-shadow: 0 1px 0 #30363d;
}

.md-tabs {
  background: rgba(0, 0, 0, 0.2);
}

.md-tabs__link--active,
.md-tabs__link:hover {
  opacity: 1;
}

.md-search__form {
  background: rgba(255, 255, 255, 0.12);
}

.md-search__form:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* === Base typography === */
.md-typeset {
  word-break: keep-all;
  overflow-wrap: normal;
  line-height: 1.8;
  text-align: left;
}

/* === Section headings: accent border === */
.md-typeset h2 {
  border-bottom: 2px solid #30363d;
  padding-bottom: 0.3em;
  margin-top: 2em;
}

/* === Blockquote: accent left border === */
.md-typeset blockquote {
  border-left: 4px solid var(--md-accent-fg-color);
  background: var(--md-admonition-bg-color, rgba(0, 0, 0, 0.025));
  padding: 0.8em 1.2em;
  border-radius: 0 0.2rem 0.2rem 0;
  margin: 1.5em 0;
}

[data-md-color-scheme="slate"] .md-typeset blockquote {
  background: rgba(255, 255, 255, 0.04);
}

/* === Tables: polished and interactive === */
.md-typeset table:not([class]) {
  border-collapse: separate !important;
  border-spacing: 0 !important;
  border: 1px solid #30363d !important;
  border-radius: 0.3rem;
  overflow: hidden;
  width: 100%;
}

.md-typeset table:not([class]) th {
  background: #161b22 !important;
  color: #e6edf3 !important;
  font-weight: 600;
  padding: 0.7em 1em;
  text-align: left;
}

.md-typeset table:not([class]) td {
  padding: 0.7em 1em;
  border-top: 1px solid #30363d !important;
}

.md-typeset table:not([class]) tbody tr {
  transition: background 0.15s;
}

.md-typeset table:not([class]) tbody tr:hover {
  background: rgba(0, 150, 136, 0.07);
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) tbody tr:hover {
  background: rgba(0, 150, 136, 0.12);
}

/* === Details/summary: card style === */
.md-typeset details {
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 0.3rem;
  margin-bottom: 0.8em;
  overflow: hidden;
}

.md-typeset details summary {
  background: var(--md-code-bg-color);
  padding: 0.6em 1em;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.15s;
}

.md-typeset details summary:hover {
  background: rgba(0, 150, 136, 0.07);
}

.md-typeset details[open] > summary {
  border-bottom: 1px solid var(--md-typeset-table-color);
  margin-bottom: 0;
}

.md-typeset details > *:not(summary) {
  padding-left: 0.5em;
  padding-right: 0.5em;
}

/* === Horizontal rules: subtle === */
.md-typeset hr {
  border: none;
  border-top: 1px solid var(--md-typeset-table-color);
  margin: 2em 0;
}

/* === External link indicator === */
.md-typeset a[href^="http"]:not([href*="zer0-kr.github.io"])::after {
  content: " ↗";
  font-size: 0.75em;
  opacity: 0.5;
}

.md-nav a::after,
.md-footer a::after,
.md-header a::after,
.md-search-result a::after,
.md-source a::after {
  content: none !important;
}

/* === Sidebar: section headers stand out from links === */
.md-nav__item--section > label.md-nav__link {
  color: #000 !important;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  margin-top: 0.8em;
}

/* === Homepage: grid cards stand out === */
.md-content .grid.cards {
  margin: 1.5em 0;
}

.md-content .grid.cards > ul > li {
  border: 2px solid var(--md-primary-fg-color) !important;
  border-radius: 0.5rem;
}

.md-content .grid.cards > ul > li:hover {
  border-color: var(--md-accent-fg-color) !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.md-content .grid.cards > ul > li p:first-child {
  font-size: 1.1rem;
}

/* === Homepage: table document links stand out === */
.md-typeset table:not([class]) td:first-child a {
  font-weight: 600;
  color: var(--md-primary-fg-color);
}

.md-typeset table:not([class]) td:first-child a:hover {
  text-decoration: underline;
}

/* === Mermaid: respect inline node text colors (Material theme overrides them) === */
.md-typeset .mermaid .nodeLabel,
.md-typeset .mermaid .edgeLabel,
.md-typeset .mermaid .label div,
.md-typeset .mermaid foreignObject div {
  color: inherit !important;
}

/* === Back to top: floating bottom-right button === */
.md-top {
  position: fixed !important;
  bottom: 1.5rem !important;
  right: 1.5rem !important;
  top: auto !important;
  left: auto !important;
  transform: none !important;
  background: #161b22 !important;
  color: #e6edf3 !important;
  border-radius: 2rem !important;
  padding: 0.6rem !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  z-index: 10;
  font-size: 0 !important;
  width: 2.5rem !important;
  height: 2.5rem !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center;
  justify-content: center;
}

.md-top svg {
  font-size: 1.2rem;
  width: 1.2rem;
  height: 1.2rem;
}

/* === Footer nav spacing === */
.md-footer__link {
  padding: 1em;
}