/* PopSockets Brand Theme
   Brand colors: Purple #594AFF, Charcoal #181818, Tan #D1BF98, White #FFFFFF
   Inspired by popsockets.com — clean, modern, generous whitespace */

:root {
  --ps-purple: #594AFF;
  --ps-purple-light: #7A6EFF;
  --ps-purple-dark: #4538CC;
  --ps-charcoal: #181818;
  --ps-tan: #D1BF98;
  --ps-tan-light: #E8DCC8;
  --ps-white: #FFFFFF;
  --ps-light-gray: #f5f5f5;
}

/* ============================================
   LIGHT MODE (default — matches popsockets.com)
   ============================================ */
[data-md-color-scheme="default"] {
  --md-primary-fg-color: var(--ps-charcoal);
  --md-primary-fg-color--light: #333333;
  --md-primary-fg-color--dark: #000000;
  --md-primary-bg-color: var(--ps-white);
  --md-accent-fg-color: var(--ps-purple);
  --md-default-bg-color: var(--ps-white);
  --md-typeset-a-color: var(--ps-purple);
}

/* ============================================
   DARK MODE
   ============================================ */
[data-md-color-scheme="slate"] {
  --md-primary-fg-color: var(--ps-charcoal);
  --md-primary-fg-color--light: #333333;
  --md-primary-fg-color--dark: #000000;
  --md-accent-fg-color: var(--ps-purple);
  --md-default-bg-color: #1a1a1a;
  --md-default-bg-color--light: #222222;
  --md-default-bg-color--lighter: #2a2a2a;
  --md-default-bg-color--lightest: #333333;
  --md-typeset-a-color: var(--ps-purple-light);
}

/* ============================================
   HEADER — clean, light, minimal
   ============================================ */
.md-header {
  background-color: var(--ps-white);
  box-shadow: none;
  border-bottom: 1px solid #e0e0e0;
  color: var(--ps-charcoal);
}

.md-header[data-md-state="shadow"] {
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.md-header__title {
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 0.8rem;
  color: var(--ps-charcoal);
}

.md-header__topic {
  color: var(--ps-charcoal);
}

/* Header icons/buttons */
.md-header .md-icon {
  color: var(--ps-charcoal);
}

/* Search input in light header */
.md-header .md-search__input {
  background-color: var(--ps-light-gray);
  color: var(--ps-charcoal);
}

/* Logo sizing */
.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  height: 1.2rem;
  width: auto;
}

/* Invert logo to white for dark mode */
[data-md-color-scheme="slate"] .md-header__button.md-logo img {
  filter: invert(1);
}

/* GitHub link in header */
.md-header .md-source {
  color: var(--ps-charcoal);
}

.md-header .md-source__icon {
  color: var(--ps-charcoal);
}

/* ============================================
   NAVIGATION TABS — clean, light
   ============================================ */
.md-tabs {
  background-color: var(--ps-white);
  border-bottom: 1px solid #e0e0e0;
}

.md-tabs__link {
  color: #666 !important;
}

.md-tabs__link--active {
  color: var(--ps-purple) !important;
  border-bottom: 2px solid var(--ps-purple);
}

/* Dark mode header overrides */
[data-md-color-scheme="slate"] .md-header {
  background-color: #1a1a1a;
  border-bottom-color: #333;
}

[data-md-color-scheme="slate"] .md-header__title,
[data-md-color-scheme="slate"] .md-header__topic,
[data-md-color-scheme="slate"] .md-header .md-icon,
[data-md-color-scheme="slate"] .md-header .md-source,
[data-md-color-scheme="slate"] .md-header .md-source__icon {
  color: var(--ps-white);
}

[data-md-color-scheme="slate"] .md-tabs {
  background-color: #1a1a1a;
  border-bottom-color: #333;
}

[data-md-color-scheme="slate"] .md-tabs__link {
  color: #999 !important;
}

/* ============================================
   SIDEBAR
   ============================================ */
.md-nav__link--active {
  color: var(--ps-purple) !important;
  font-weight: 600;
}

.md-nav__link:hover {
  color: var(--ps-purple) !important;
}

/* ============================================
   CONTENT
   ============================================ */

/* Links */
.md-typeset a:hover {
  color: var(--ps-purple-dark);
  text-decoration: underline;
}

/* Headings */
.md-typeset h1,
.md-typeset h2 {
  font-weight: 700;
  letter-spacing: -0.01em;
}

.md-typeset h1 {
  border-bottom: 3px solid var(--ps-purple);
  padding-bottom: 0.4em;
}

/* Code blocks */
.md-typeset code {
  border-radius: 4px;
}

/* Admonitions */
.md-typeset .admonition,
.md-typeset details {
  border-left-color: var(--ps-purple);
}

/* Tables */
.md-typeset table:not([class]) th {
  background-color: var(--ps-charcoal);
  color: var(--ps-white);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

/* ============================================
   FOOTER
   ============================================ */
.md-footer {
  background-color: var(--ps-charcoal);
}

/* ============================================
   SEARCH
   ============================================ */
.md-search__input {
  border-radius: 4px;
}

/* ============================================
   MERMAID
   ============================================ */
.mermaid {
  background: transparent !important;
}

/* Mermaid click-to-expand hint */
[data-zoom-ready] {
  position: relative;
  transition: box-shadow 0.2s ease;
  border-radius: 6px;
  padding: 4px;
}

[data-zoom-ready]:hover {
  box-shadow: 0 0 0 2px var(--ps-purple);
}

[data-zoom-ready]::after {
  content: "⛶ Click to expand";
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.7rem;
  color: #999;
  background: rgba(255,255,255,0.85);
  padding: 2px 8px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

[data-md-color-scheme="slate"] [data-zoom-ready]::after {
  background: rgba(30,30,30,0.85);
  color: #aaa;
}

[data-zoom-ready]:hover::after {
  opacity: 1;
}

/* Mermaid full-screen overlay */
.mermaid-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.85);
  z-index: 9999;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.mermaid-overlay.active {
  display: flex;
}

.mermaid-overlay-content {
  max-width: 95vw;
  max-height: 90vh;
  overflow: auto;
  background: var(--ps-white);
  border-radius: 8px;
  padding: 2rem;
  cursor: default;
}

.mermaid-overlay-content svg {
  max-width: 100%;
  height: auto;
}

[data-md-color-scheme="slate"] .mermaid-overlay-content {
  background: #1a1a1a;
}

/* Zoom controls bar */
.mermaid-overlay-controls {
  position: fixed;
  top: 1rem;
  right: 1.5rem;
  z-index: 10000;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(40, 40, 40, 0.9);
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
  backdrop-filter: blur(4px);
}

.mermaid-zoom-btn {
  background: none;
  border: none;
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background 0.15s;
  line-height: 1;
}

.mermaid-zoom-btn:hover {
  background: rgba(255, 255, 255, 0.15);
}

.mermaid-overlay-close {
  font-size: 1.5rem !important;
  margin-left: 0.25rem;
  border-left: 1px solid rgba(255, 255, 255, 0.2) !important;
  padding-left: 0.5rem !important;
}

.mermaid-zoom-level {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.75rem;
  min-width: 3rem;
  text-align: center;
  font-family: var(--md-code-font-family, monospace);
  user-select: none;
}

/* ============================================
   BUTTONS & INTERACTIVE
   ============================================ */
.md-typeset .md-button--primary {
  background-color: var(--ps-purple);
  border-color: var(--ps-purple);
}

.md-typeset .md-button--primary:hover {
  background-color: var(--ps-purple-dark);
  border-color: var(--ps-purple-dark);
}