/*
 * Music Attribution Scaffold — Editorial Design System for MkDocs
 *
 * Mirrors the frontend design tokens from frontend/src/app/globals.css.
 * Design DNA: Bold editorial minimalism. Typography-driven. Data as art.
 * Heritage: Constructivist data viz + Warp Records aesthetic + Scandinavian editorial
 */

/* ========================================================================
   FONT IMPORTS — Google Fonts CDN
   ======================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Plus+Jakarta+Sans:wght@200..800&family=IBM+Plex+Mono:wght@400;500&display=swap');

/* ========================================================================
   CUSTOM CSS PROPERTIES (shared across both schemes)
   ======================================================================== */
:root {
  --font-display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --md-text-font: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --md-code-font: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

/* ========================================================================
   LIGHT SCHEME — Warm editorial palette
   Matches frontend :root variables
   ======================================================================== */
[data-md-color-scheme="music-attribution"] {
  /* Surface */
  --md-default-bg-color:              #f6f3e6;
  --md-default-bg-color--light:       #f6f3e6b3;
  --md-default-bg-color--lighter:     #f6f3e64d;
  --md-default-bg-color--lightest:    #f6f3e61f;

  /* Text */
  --md-default-fg-color:              #4A4A4A;
  --md-default-fg-color--light:       #666666;
  --md-default-fg-color--lighter:     #6b6b6b;
  --md-default-fg-color--lightest:    #E0DDD5;

  /* Primary — Navy */
  --md-primary-fg-color:              #1E3A5F;
  --md-primary-fg-color--light:       #2A4F7A;
  --md-primary-fg-color--dark:        #0F2440;
  --md-primary-bg-color:              #f6f3e6;
  --md-primary-bg-color--light:       #f6f3e6b3;

  /* Accent — Coral red */
  --md-accent-fg-color:               #E84C4F;
  --md-accent-fg-color--transparent:  rgba(232, 76, 79, 0.1);
  --md-accent-bg-color:               #f6f3e6;

  /* Footer */
  --md-footer-bg-color:               #1E3A5F;
  --md-footer-bg-color--dark:         #0F2440;
  --md-footer-fg-color:               #f6f3e6;
  --md-footer-fg-color--light:        #f6f3e6b3;
  --md-footer-fg-color--lighter:      #f6f3e673;

  /* Code */
  --md-code-bg-color:                 #eeeadb;
  --md-code-fg-color:                 #4A4A4A;
  --md-code-hl-color:                 rgba(232, 76, 79, 0.15);
  --md-code-hl-number-color:          #C44536;
  --md-code-hl-string-color:          #4A7C59;
  --md-code-hl-keyword-color:         #1E3A5F;
  --md-code-hl-function-color:        #2E7D7B;
  --md-code-hl-comment-color:         #6b6b6b;
  --md-code-hl-operator-color:        #8B6914;
  --md-code-hl-punctuation-color:     #666666;
  --md-code-hl-constant-color:        #BA478F;
  --md-code-hl-name-color:            #333333;
  --md-code-hl-special-color:         #D4A03C;

  /* Typography */
  --md-typeset-color:                 #4A4A4A;
  --md-typeset-a-color:               #E84C4F;
  --md-typeset-mark-color:            rgba(232, 76, 79, 0.2);
  --md-typeset-table-color:           #E0DDD5;

  /* Admonitions */
  --md-admonition-bg-color:           #eeeadb;
  --md-admonition-fg-color:           #4A4A4A;

  /* Shadows — warm tint */
  --md-shadow-z1: 0 1px 2px rgba(30, 58, 95, 0.04);
  --md-shadow-z2: 0 2px 8px rgba(30, 58, 95, 0.06);
  --md-shadow-z3: 0 4px 16px rgba(30, 58, 95, 0.08);

  /* Custom tokens for editorial elements */
  --color-heading:           #1A1A1A;
  --color-accent:            #E84C4F;
  --color-surface-secondary: #eeeadb;
  --color-border:            #E0DDD5;
  --color-sidebar-bg:        #F8F6F0;
}

/* ========================================================================
   DARK SCHEME — Deep blue-black, warm tones preserved
   Matches frontend .dark variables
   ======================================================================== */
[data-md-color-scheme="music-attribution-dark"] {
  /* Surface */
  --md-default-bg-color:              #1A1A2E;
  --md-default-bg-color--light:       #1A1A2Eb3;
  --md-default-bg-color--lighter:     #1A1A2E4d;
  --md-default-bg-color--lightest:    #1A1A2E1f;

  /* Text */
  --md-default-fg-color:              #B0ACA0;
  --md-default-fg-color--light:       #8A8680;
  --md-default-fg-color--lighter:     #918e8b;
  --md-default-fg-color--lightest:    #2A2A44;

  /* Primary — Light blue */
  --md-primary-fg-color:              #7BA3D4;
  --md-primary-fg-color--light:       #94B8E2;
  --md-primary-fg-color--dark:        #5B8BC0;
  --md-primary-bg-color:              #1A1A2E;
  --md-primary-bg-color--light:       #1A1A2Eb3;

  /* Accent — Coral (lighter in dark) */
  --md-accent-fg-color:               #F06B6E;
  --md-accent-fg-color--transparent:  rgba(240, 107, 110, 0.1);
  --md-accent-bg-color:               #1A1A2E;

  /* Footer */
  --md-footer-bg-color:               #0F1A30;
  --md-footer-bg-color--dark:         #0A1220;
  --md-footer-fg-color:               #E8E6E0;
  --md-footer-fg-color--light:        #CCC8BCb3;
  --md-footer-fg-color--lighter:      #CCC8BC73;

  /* Code */
  --md-code-bg-color:                 #16213E;
  --md-code-fg-color:                 #B0ACA0;
  --md-code-hl-color:                 rgba(240, 107, 110, 0.15);
  --md-code-hl-number-color:          #E06050;
  --md-code-hl-string-color:          #6BAF7E;
  --md-code-hl-keyword-color:         #7BA3D4;
  --md-code-hl-function-color:        #4EC4C1;
  --md-code-hl-comment-color:         #918e8b;
  --md-code-hl-operator-color:        #F0B04E;
  --md-code-hl-punctuation-color:     #8A8680;
  --md-code-hl-constant-color:        #D47AAB;
  --md-code-hl-name-color:            #CCC8BC;
  --md-code-hl-special-color:         #E8B94A;

  /* Typography */
  --md-typeset-color:                 #B0ACA0;
  --md-typeset-a-color:               #F06B6E;
  --md-typeset-mark-color:            rgba(240, 107, 110, 0.2);
  --md-typeset-table-color:           #2A2A44;

  /* Admonitions */
  --md-admonition-bg-color:           #16213E;
  --md-admonition-fg-color:           #B0ACA0;

  /* Shadows */
  --md-shadow-z1: 0 1px 2px rgba(0, 0, 0, 0.2);
  --md-shadow-z2: 0 2px 8px rgba(0, 0, 0, 0.25);
  --md-shadow-z3: 0 4px 16px rgba(0, 0, 0, 0.3);

  /* Custom tokens */
  --color-heading:           #E8E6E0;
  --color-accent:            #F06B6E;
  --color-surface-secondary: #16213E;
  --color-border:            #2A2A44;
  --color-sidebar-bg:        #16162C;
}

/* ========================================================================
   LAYOUT — Wider editorial grid
   ======================================================================== */
.md-grid {
  max-width: 1440px;
}

/* ========================================================================
   EDITORIAL TYPOGRAPHY — Instrument Serif headings
   ======================================================================== */

/* H1: Display serif with accent square */
.md-typeset h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-heading);
  margin-bottom: 1.5rem;
}

.md-typeset h1::before {
  content: "";
  display: inline-block;
  width: 20px;
  height: 20px;
  background: var(--color-accent);
  margin-right: 12px;
  vertical-align: middle;
  flex-shrink: 0;
}

/* H2: Display serif with coral accent line */
.md-typeset h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  line-height: 1.15;
  color: var(--color-heading);
  margin-top: 2.5rem;
  padding-bottom: 0.6rem;
}

.md-typeset h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 1px;
  background: var(--color-accent);
  margin-top: 0.5rem;
}

/* H3-H4: Plus Jakarta Sans (body font), bolder */
.md-typeset h3 {
  font-family: var(--md-text-font);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--color-heading);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 2rem;
}

.md-typeset h4 {
  font-family: var(--md-text-font);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-heading);
}

/* Body text — generous line-height */
.md-typeset {
  font-size: 0.92rem;
  line-height: 1.7;
}

.md-typeset p {
  margin-bottom: 1.25em;
}

/* ========================================================================
   HEADER — Navy background, coral accent bottom border
   ======================================================================== */
.md-header {
  background: var(--md-primary-fg-color);
  box-shadow: none;
  border-bottom: 2px solid var(--color-accent);
}

/* Remove the shadow that appears on scroll */
.md-header[data-md-state="shadow"] {
  box-shadow: none;
  border-bottom: 2px solid var(--color-accent);
}

/* Header title in display font */
.md-header__title {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.01em;
}

/* Ensure header text is readable on navy bg */
.md-header,
.md-header .md-header__title,
.md-header .md-header__topic {
  color: #f6f3e6;
}

/* ========================================================================
   NAVIGATION SIDEBAR — Warm sidebar background
   ======================================================================== */
.md-sidebar {
  background: var(--color-sidebar-bg);
}

/* Active nav link uses coral accent */
.md-nav__link--active {
  color: var(--md-accent-fg-color);
  font-weight: 600;
}

/* Navigation section labels — editorial caps */
.md-nav__item--section > .md-nav__link {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.65rem;
}

/* Subtle nav link hover */
.md-nav__link:hover {
  color: var(--md-accent-fg-color);
}

/* Tab navigation — editorial caps */
.md-tabs__link {
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.72rem;
}

/* ========================================================================
   FOOTER — Navy background, coral top border
   ======================================================================== */
.md-footer {
  border-top: 2px solid var(--color-accent);
}

/* Footer link styling */
.md-footer a {
  color: var(--md-footer-fg-color--light);
}

.md-footer a:hover {
  color: var(--md-footer-fg-color);
}

/* Copyright area */
.md-copyright {
  color: var(--md-footer-fg-color--lighter);
}

.md-copyright a {
  color: var(--md-footer-fg-color--light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.md-copyright a:hover {
  color: var(--md-footer-fg-color);
}

/* ========================================================================
   LINKS — Underline with coral accent (not pill buttons)
   ======================================================================== */
.md-typeset a {
  color: var(--md-typeset-a-color);
  text-decoration: underline;
  text-decoration-color: var(--md-accent-fg-color);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.md-typeset a:hover {
  color: var(--md-accent-fg-color);
  text-decoration-thickness: 2px;
}

/* Navigation links should not have underlines */
.md-nav a,
.md-tabs a,
.md-header a,
.md-footer-nav a,
.md-footer__link {
  text-decoration: none;
}

/* ========================================================================
   CODE BLOCKS — IBM Plex Mono, warm background
   ======================================================================== */
.md-typeset code,
.md-typeset pre > code {
  font-size: 0.82rem;
  border-radius: 2px;
}

.md-typeset pre {
  border-radius: 2px;
  border: 1px solid var(--color-border);
}

/* Inline code */
.md-typeset code:not(pre code) {
  padding: 0.15em 0.4em;
  background: var(--md-code-bg-color);
  border: 1px solid var(--color-border);
}

/* ========================================================================
   TABLES — Editorial styling
   ======================================================================== */
.md-typeset table:not([class]) {
  font-size: 0.85rem;
  border-collapse: collapse;
}

.md-typeset table:not([class]) th {
  background-color: var(--color-surface-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.75rem;
}

.md-typeset table:not([class]) td {
  border-color: var(--color-border);
}

/* ========================================================================
   ADMONITIONS — Flat editorial style, no shadow, top border
   ======================================================================== */
.md-typeset .admonition,
.md-typeset details {
  border: none;
  border-radius: 0;
  border-top: 2px solid;
  box-shadow: none;
  background: var(--md-admonition-bg-color);
}

.md-typeset .admonition > .admonition-title,
.md-typeset details > summary {
  background: transparent;
  border-radius: 0;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.8rem;
}

/* Admonition type colors */
.md-typeset .admonition.note,
.md-typeset details.note {
  border-top-color: var(--md-primary-fg-color);
}

.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-top-color: #4A7C59;
}

.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-top-color: #E09F3E;
}

.md-typeset .admonition.danger,
.md-typeset details.danger {
  border-top-color: #C44536;
}

.md-typeset .admonition.info,
.md-typeset details.info {
  border-top-color: #2E7D7B;
}

.md-typeset .admonition.example,
.md-typeset details.example {
  border-top-color: #BA478F;
}

/* ========================================================================
   MERMAID DIAGRAMS — Centered, warm background
   ======================================================================== */
.mermaid {
  text-align: center;
  margin: 1.5rem 0;
}

.mermaid svg {
  max-width: 100%;
}

/* ========================================================================
   EDITORIAL UTILITY CLASSES (for use with attr_list in markdown)
   ======================================================================== */

/* ALL-CAPS tracking — section labels, badges */
.editorial-caps {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-family: var(--md-text-font);
  font-weight: 500;
  font-size: 0.75rem;
}

/* Display heading — Instrument Serif */
.editorial-display {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.1;
}

/* Display heading italic */
.editorial-display-italic {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  line-height: 1.1;
}

/* Accent line — thin horizontal rule */
.accent-line {
  height: 1px;
  background-color: var(--color-accent);
  border: none;
  margin: 1.5rem 0;
}

/* Accent square — small decorative block */
.accent-square {
  display: inline-block;
  width: 16px;
  height: 16px;
  background-color: var(--color-accent);
  flex-shrink: 0;
}

/* Monospace data display */
.data-mono {
  font-family: var(--md-code-font);
  font-variant-numeric: tabular-nums;
}

/* ========================================================================
   NOISE GRAIN OVERLAY — Subtle SVG texture
   ======================================================================== */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ========================================================================
   SEARCH MODAL — Warm styling
   ======================================================================== */
.md-search__form {
  background: var(--md-default-bg-color);
  border: 1px solid var(--color-border);
  border-radius: 2px;
}

.md-search-result__link:hover {
  background: var(--md-accent-fg-color--transparent);
}

/* ========================================================================
   ANNOUNCEMENT BAR — Coral accent
   ======================================================================== */
.md-banner {
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color);
}

.md-banner a {
  color: var(--md-primary-bg-color);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.md-banner a:hover {
  color: var(--color-accent);
}

/* ========================================================================
   TABS — Editorial underline style
   ======================================================================== */
.md-typeset .tabbed-labels > label {
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.8rem;
}

.md-typeset .tabbed-labels > label--active,
.md-typeset .tabbed-set > input:checked + label {
  color: var(--md-accent-fg-color);
  border-color: var(--md-accent-fg-color);
}

/* ========================================================================
   TASK LISTS — Coral checkmarks
   ======================================================================== */
.md-typeset [type="checkbox"]:checked + .task-list-indicator::before {
  background-color: var(--md-accent-fg-color);
}

/* ========================================================================
   REDUCED MOTION
   ======================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  body::before {
    display: none;
  }
}

/* ========================================================================
   PRINT STYLES — Clean output
   ======================================================================== */
@media print {
  body::before {
    display: none;
  }

  .md-typeset h1::before,
  .md-typeset h2::after {
    display: none;
  }
}

/* ========================================================================
   MATH OVERFLOW CONTAINMENT — Defense-in-depth
   Prevents MathJax-rendered content from overflowing containers.
   ======================================================================== */
.MathJax {
  overflow-x: auto;
  max-width: 100%;
}

.md-content .arithmatex {
  overflow-x: auto;
  max-width: 100%;
}