/* =============================================================================
   HSIO Lab Custom Styles - Clean Design with Purple Theme
   ============================================================================= */

/* -----------------------------------------------------------------------------
   CSS Variables & Theme Colors (Purple/Indigo Theme)
   ----------------------------------------------------------------------------- */
:root {
  --md-primary-fg-color: #6366f1;
  --md-primary-fg-color--light: #818cf8;
  --md-primary-fg-color--dark: #4f46e5;
  --md-accent-fg-color: #f59e0b;

  /* HSIO Lab purple theme colors */
  --hsio-purple: #6366f1;
  --hsio-purple-light: #818cf8;
  --hsio-purple-dark: #4f46e5;
  --hsio-amber: #f59e0b;
  --hsio-amber-light: #fbbf24;
  --hsio-dark: #1e1b4b;
  --hsio-darker: #0f0a2e;
  --hsio-gray: #374151;
}

[data-md-color-scheme="slate"] {
  --md-default-bg-color: #0f0a2e;
  --md-default-fg-color: #e2e8f0;
  --md-code-bg-color: #1e1b4b;
  --md-typeset-color: #e0e0e0;
}

[data-md-color-scheme="default"] {
  --md-primary-fg-color: #6366f1;
  --md-default-bg-color: #ffffff;
}

/* -----------------------------------------------------------------------------
   Header - Clean Style with Purple Theme
   ----------------------------------------------------------------------------- */
.md-header {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #1e1b4b 100%);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  height: auto;
}

/* Purple/amber accent line at top */
.md-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--hsio-purple), var(--hsio-amber), var(--hsio-purple));
}

/* Remove any other pseudo elements */
.md-header::after {
  display: none;
}

/* Header inner container */
.md-header__inner {
  padding: 0 1rem;
}

/* -----------------------------------------------------------------------------
   Logo & Site Title - Clean and Visible
   ----------------------------------------------------------------------------- */
.md-header__button.md-logo {
  padding: 0.4rem;
  margin-right: 0.5rem;
}

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  height: 1.5rem;
  width: auto;
  fill: white;
  color: white;
}

.md-header__title {
  font-weight: 700;
  font-size: 1.2rem;
  color: #ffffff !important;
  letter-spacing: 0.5px;
  margin-left: 0.25rem;
}

/* Ensure title text is always white and visible */
.md-header__title,
.md-header__title .md-header__topic,
.md-header__title .md-header__topic > span,
.md-header__ellipsis {
  color: #ffffff !important;
  -webkit-text-fill-color: #ffffff !important;
  background: none !important;
  opacity: 1 !important;
}

/* Hide the second header topic (page title) to avoid duplicate "HSIO Lab" */
.md-header__topic:nth-child(2) {
  display: none !important;
}

/* -----------------------------------------------------------------------------
   Navigation Tabs - Clean Style
   ----------------------------------------------------------------------------- */
.md-tabs {
  background: rgba(30, 27, 75, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.md-tabs__list {
  margin: 0;
}

.md-tabs__item {
  height: 2.8rem;
}

.md-tabs__link {
  font-weight: 500;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.3px;
  padding: 0.8rem 1.2rem;
  margin: 0;
  border-radius: 0;
  opacity: 1;
  transition: color 0.2s ease, background 0.2s ease;
}

.md-tabs__link:hover {
  color: #ffffff;
  background: rgba(99, 102, 241, 0.2);
}

.md-tabs__link--active,
.md-tabs__link--active:hover {
  color: #ffffff;
  background: rgba(99, 102, 241, 0.15);
  font-weight: 600;
}

/* Active tab amber underline */
.md-tabs__link--active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--hsio-amber);
}

/* Remove any other tab decorations */
.md-tabs__link::before {
  display: none;
}

/* -----------------------------------------------------------------------------
   Search Bar - Clean Design
   ----------------------------------------------------------------------------- */
.md-search__form {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  transition: all 0.2s ease;
}

.md-search__form:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

.md-search__form:focus-within {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--hsio-purple-light);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.3);
}

.md-search__input {
  font-size: 0.9rem;
  color: #ffffff;
}

.md-search__input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.md-search__icon {
  color: rgba(255, 255, 255, 0.6);
}

/* Search dropdown */
.md-search__output {
  background: var(--hsio-dark);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0 0 4px 4px;
}

/* -----------------------------------------------------------------------------
   Header Buttons
   ----------------------------------------------------------------------------- */
.md-header__button {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.2s ease;
}

.md-header__button:hover {
  color: #ffffff;
}

/* Theme toggle */
.md-header__option {
  margin-left: 0.5rem;
}

/* -----------------------------------------------------------------------------
   Content Styling
   ----------------------------------------------------------------------------- */
.md-content {
  padding-top: 1.5rem;
}

/* Page titles */
.md-typeset h1 {
  font-weight: 700;
  color: var(--md-default-fg-color);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--hsio-purple);
}

.md-typeset h2 {
  font-weight: 600;
  margin-top: 2rem;
}

/* Links */
.md-typeset a {
  color: var(--hsio-purple-light);
}

.md-typeset a:hover {
  color: var(--hsio-amber);
}

/* -----------------------------------------------------------------------------
   Code Blocks
   ----------------------------------------------------------------------------- */
.md-typeset pre {
  background: #1e1b4b;
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 4px;
}

.md-typeset code {
  background: rgba(99, 102, 241, 0.15);
  color: var(--hsio-purple-light);
  border-radius: 3px;
  padding: 0.1em 0.3em;
}

.md-typeset pre code {
  background: transparent;
  color: inherit;
}

.highlight code {
  font-size: 0.85em;
  line-height: 1.5;
}

/* Code copy button */
.md-clipboard:hover {
  color: var(--hsio-amber);
}

/* -----------------------------------------------------------------------------
   Tables
   ----------------------------------------------------------------------------- */
.md-typeset table:not([class]) {
  font-size: 0.85rem;
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 4px;
  overflow: hidden;
}

.md-typeset table:not([class]) th {
  background: linear-gradient(135deg, var(--hsio-purple-dark), var(--hsio-purple));
  color: white;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  padding: 0.75rem 1rem;
}

.md-typeset table:not([class]) td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}

.md-typeset table:not([class]) tr:hover td {
  background: rgba(99, 102, 241, 0.08);
}

/* -----------------------------------------------------------------------------
   Cards & Grid
   ----------------------------------------------------------------------------- */
.grid.cards > ul > li {
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 8px;
  background: rgba(99, 102, 241, 0.03);
  transition: all 0.2s ease;
}

.grid.cards > ul > li:hover {
  border-color: var(--hsio-purple);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.2);
}

/* -----------------------------------------------------------------------------
   Admonitions
   ----------------------------------------------------------------------------- */
.md-typeset .admonition {
  border-radius: 4px;
  border: none;
  border-left: 4px solid;
}

.md-typeset .admonition.note,
.md-typeset details.note {
  border-left-color: var(--hsio-purple);
  background: rgba(99, 102, 241, 0.08);
}

.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-left-color: var(--hsio-amber);
  background: rgba(245, 158, 11, 0.08);
}

.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-left-color: #f59e0b;
  background: rgba(245, 158, 11, 0.08);
}

.md-typeset .admonition.danger,
.md-typeset details.danger {
  border-left-color: #ef4444;
  background: rgba(239, 68, 68, 0.08);
}

.md-typeset .admonition.info,
.md-typeset details.info {
  border-left-color: #3b82f6;
  background: rgba(59, 130, 246, 0.08);
}

/* -----------------------------------------------------------------------------
   Navigation Sidebar - Base styles (Mobile-first)
   ----------------------------------------------------------------------------- */
.md-nav__link {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s ease;
}

.md-nav__link:hover {
  color: #ffffff;
}

.md-nav__link--active {
  color: var(--hsio-purple-light) !important;
  font-weight: 600;
}

/* Section headers in nav - simple mobile style */
.md-nav__item--nested > .md-nav__link {
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
}

/* Expand/collapse icons */
.md-nav__icon {
  color: rgba(255, 255, 255, 0.5);
}

/* -----------------------------------------------------------------------------
   Navigation Sidebar - Enhanced Desktop styles
   ----------------------------------------------------------------------------- */
@media screen and (min-width: 76.25em) {
  /* Parent/Section headers in nav (Development, Validation, etc.) */
  .md-nav__item--nested > .md-nav__link {
    font-weight: 700;
    font-size: 0.85rem;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.6rem 0.6rem;
    margin: 0.5rem 0 0.25rem 0;
    background: rgba(99, 102, 241, 0.15);
    border-left: 3px solid var(--hsio-purple-light);
    border-radius: 0 4px 4px 0;
  }

  .md-nav__item--nested > .md-nav__link:hover {
    background: rgba(99, 102, 241, 0.25);
  }

  /* Child items - increased indentation and smaller font */
  .md-nav__item--nested .md-nav__list {
    padding-left: 0.75rem;
    margin-left: 0.5rem;
    border-left: 1px solid rgba(99, 102, 241, 0.2);
  }

  .md-nav__item--nested .md-nav__list .md-nav__link {
    font-size: 0.78rem;
    font-weight: 400;
    text-transform: none;
    letter-spacing: normal;
    padding: 0.4rem 0.6rem;
    margin: 0;
    background: transparent;
    border-left: none;
    border-radius: 0;
  }

  .md-nav__item--nested .md-nav__list .md-nav__link:hover {
    background: rgba(99, 102, 241, 0.1);
    color: #ffffff;
  }

  /* Active child link */
  .md-nav__item--nested .md-nav__list .md-nav__link--active {
    color: var(--hsio-purple-light) !important;
    font-weight: 600;
    background: rgba(99, 102, 241, 0.1);
    border-left: 2px solid var(--hsio-amber);
    margin-left: -1px;
  }

  /* Nested sections within child (e.g., sub-categories) */
  .md-nav__item--nested .md-nav__item--nested > .md-nav__link {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: none;
    letter-spacing: normal;
    background: rgba(99, 102, 241, 0.08);
    border-left: 2px solid rgba(99, 102, 241, 0.4);
  }

  /* Expand/collapse icons */
  .md-nav__item--nested > .md-nav__link .md-nav__icon {
    color: var(--hsio-purple-light);
  }

  /* Primary nav (top level sections like PCIe, DDR, etc.) */
  .md-nav--primary > .md-nav__list > .md-nav__item > .md-nav__link {
    font-weight: 700;
    font-size: 0.9rem;
    color: #ffffff;
    padding: 0.5rem 0.6rem;
  }
}

/* -----------------------------------------------------------------------------
   Footer
   ----------------------------------------------------------------------------- */
.md-footer {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #1e1b4b 100%);
  border-top: 1px solid rgba(99, 102, 241, 0.2);
}

.md-footer__inner {
  padding: 1rem;
}

.md-footer-meta {
  background: rgba(15, 10, 46, 0.5);
}

.md-footer__link {
  color: rgba(255, 255, 255, 0.7);
}

.md-footer__link:hover {
  color: #ffffff;
}

/* Social links */
.md-social__link svg {
  fill: rgba(255, 255, 255, 0.6);
  transition: fill 0.2s ease;
}

.md-social__link:hover svg {
  fill: var(--hsio-amber);
}

/* Copyright */
.md-copyright {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.75rem;
}

/* -----------------------------------------------------------------------------
   Mermaid Diagrams
   ----------------------------------------------------------------------------- */
.mermaid {
  margin: 1.5em 0;
  text-align: center;
  background: rgba(99, 102, 241, 0.03);
  padding: 1.5rem;
  border-radius: 4px;
  border: 1px solid rgba(99, 102, 241, 0.15);
}

/* -----------------------------------------------------------------------------
   Scrollbars
   ----------------------------------------------------------------------------- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--hsio-darker);
}

::-webkit-scrollbar-thumb {
  background: var(--hsio-purple-dark);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--hsio-purple);
}

/* -----------------------------------------------------------------------------
   ASCII Art & Eye Diagrams
   ----------------------------------------------------------------------------- */
pre code {
  line-height: 1.3;
}

.md-typeset pre code {
  font-family: 'Roboto Mono', 'Consolas', 'Monaco', monospace;
}

/* -----------------------------------------------------------------------------
   Table of Contents (Right Sidebar)
   ----------------------------------------------------------------------------- */
.md-sidebar--secondary .md-nav__link {
  font-size: 0.75rem;
}

.md-sidebar--secondary .md-nav__link--active {
  color: var(--hsio-purple-light);
}

/* TOC title */
.md-nav__title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: rgba(255, 255, 255, 0.5);
}

/* -----------------------------------------------------------------------------
   Breadcrumb (Home link)
   ----------------------------------------------------------------------------- */
.md-nav--primary .md-nav__link[href="."] {
  color: var(--hsio-purple-light);
}

/* -----------------------------------------------------------------------------
   Print Styles
   ----------------------------------------------------------------------------- */
@media print {
  .md-sidebar,
  .md-header,
  .md-footer,
  .md-tabs {
    display: none;
  }

  .md-content {
    margin: 0;
    padding: 0;
  }
}

/* -----------------------------------------------------------------------------
   Mobile Responsive
   ----------------------------------------------------------------------------- */
@media screen and (max-width: 76.25em) {
  .md-header__title {
    font-size: 1rem;
  }

  .md-tabs__link {
    font-size: 0.8rem;
    padding: 0.6rem 0.8rem;
  }
}

@media screen and (max-width: 60em) {
  .md-header::before {
    height: 2px;
  }

  .md-nav__source {
    background: var(--hsio-dark);
  }
}

/* -----------------------------------------------------------------------------
   Light Mode Adjustments
   ----------------------------------------------------------------------------- */
[data-md-color-scheme="default"] .md-header {
  background: linear-gradient(135deg, #4f46e5 0%, #6366f1 50%, #7c3aed 100%);
}

[data-md-color-scheme="default"] .md-tabs {
  background: rgba(79, 70, 229, 0.95);
}

[data-md-color-scheme="default"] .md-typeset h1 {
  color: #1e1b4b;
}

[data-md-color-scheme="default"] .md-typeset table:not([class]) td {
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

[data-md-color-scheme="default"] .md-typeset pre {
  background: #f5f5f5;
  border-color: rgba(99, 102, 241, 0.2);
}

[data-md-color-scheme="default"] .md-typeset code {
  background: rgba(99, 102, 241, 0.1);
}

[data-md-color-scheme="default"] .md-footer {
  background: linear-gradient(135deg, #4f46e5 0%, #6366f1 50%, #7c3aed 100%);
}

/* Light Mode - Navigation Sidebar */
[data-md-color-scheme="default"] .md-nav__link {
  color: rgba(0, 0, 0, 0.7);
}

[data-md-color-scheme="default"] .md-nav__link:hover {
  color: var(--hsio-purple-dark);
}

[data-md-color-scheme="default"] .md-nav__link--active {
  color: var(--hsio-purple-dark) !important;
}

[data-md-color-scheme="default"] .md-nav__item--nested > .md-nav__link {
  color: rgba(0, 0, 0, 0.87);
}

[data-md-color-scheme="default"] .md-nav__icon {
  color: rgba(0, 0, 0, 0.5);
}

/* Light Mode - TOC title */
[data-md-color-scheme="default"] .md-nav__title {
  color: rgba(0, 0, 0, 0.5);
}

/* Light Mode - Desktop Navigation Enhanced Styles */
@media screen and (min-width: 76.25em) {
  [data-md-color-scheme="default"] .md-nav__item--nested > .md-nav__link {
    color: #1e1b4b;
    background: rgba(99, 102, 241, 0.1);
    border-left-color: var(--hsio-purple);
  }

  [data-md-color-scheme="default"] .md-nav__item--nested > .md-nav__link:hover {
    background: rgba(99, 102, 241, 0.18);
  }

  [data-md-color-scheme="default"] .md-nav__item--nested .md-nav__list {
    border-left-color: rgba(99, 102, 241, 0.25);
  }

  [data-md-color-scheme="default"] .md-nav__item--nested .md-nav__list .md-nav__link {
    color: rgba(0, 0, 0, 0.7);
  }

  [data-md-color-scheme="default"] .md-nav__item--nested .md-nav__list .md-nav__link:hover {
    background: rgba(99, 102, 241, 0.08);
    color: #1e1b4b;
  }

  [data-md-color-scheme="default"] .md-nav__item--nested .md-nav__list .md-nav__link--active {
    color: var(--hsio-purple-dark) !important;
    background: rgba(99, 102, 241, 0.1);
  }

  [data-md-color-scheme="default"] .md-nav__item--nested .md-nav__item--nested > .md-nav__link {
    color: #1e1b4b;
    background: rgba(99, 102, 241, 0.06);
    border-left-color: rgba(99, 102, 241, 0.5);
  }

  [data-md-color-scheme="default"] .md-nav__item--nested > .md-nav__link .md-nav__icon {
    color: var(--hsio-purple);
  }

  [data-md-color-scheme="default"] .md-nav--primary > .md-nav__list > .md-nav__item > .md-nav__link {
    color: #1e1b4b;
  }
}

/* Light Mode - Table of Contents (Right Sidebar) */
[data-md-color-scheme="default"] .md-sidebar--secondary .md-nav__link {
  color: rgba(0, 0, 0, 0.6);
}

[data-md-color-scheme="default"] .md-sidebar--secondary .md-nav__link:hover {
  color: var(--hsio-purple-dark);
}

[data-md-color-scheme="default"] .md-sidebar--secondary .md-nav__link--active {
  color: var(--hsio-purple-dark);
}