/*
 * lincoln.css — Pico 2 theme: Lincoln Blue
 * Works with: topics, trees, bark, and org-parse
 *
 * Color scheme:
 *   Lincoln Blue:   #191970  (Dominant — headings, thead, primary)
 *   Cool Grey:      #8E9AAF  (Secondary — muted text, borders)
 *   Burned Orange:  #D66853  (Accent — blockquotes, warnings, highlights)
 *   Ghost White:    #F8F9FA  (Background)
 *   Charcoal:       #212529  (Text)
 *
 * Derived palette:
 *   Navy hover:     #0f0f4d  (Lincoln Blue darkened)
 *   Navy light:     #e8e8f4  (Lincoln Blue @ 8% on white)
 *   Orange light:   #fdf0ee  (Burned Orange @ 8% on white)
 *   Slate:          #6c757d  (Charcoal lightened for muted)
 *   Lavender:       #7B68AE  (Complement — links, level-3)
 *   Steel:          #4A6FA5  (Mid-blue — keywords, status-neutral)
 *   Forest:         #2D6A4F  (Status-positive)
 *   Gold:           #B8860B  (Status-caution)
 *
 * Supports dark mode via:
 *   - prefers-color-scheme
 *   - [data-theme=dark] attribute
 */

/* ==========================================================================
   1. CUSTOM PROPERTIES — Light Mode (default)
   ========================================================================== */

:root {
  /* Brand colors */
  --org-teal:         #191970;  /* Lincoln Blue — dominant */
  --org-light-teal:   #7B8FBF;  /* Lincoln Blue lightened for dark-mode headings */
  --org-dark-teal:    #4A6FA5;  /* Steel — secondary blue */
  --org-warm-brown:   #D66853;  /* Burned Orange — accent */
  --org-soft-red:     #D66853;  /* alias: accent */
  --org-firebrick:    #C1513E;  /* Burned Orange darkened */
  --org-steel-blue:   #4A6FA5;  /* Steel */
  --org-purple:       #7B68AE;  /* Lavender complement */
  --org-plum:         #6A5097;  /* Lavender darkened */
  --org-grey:         #6c757d;  /* Slate */

  --org-gradient: linear-gradient(90deg, #191970 0%, #4A6FA5 30%, #8E9AAF 55%, #D66853 80%, #7B68AE 100%);

  /* Light mode */
  --org-teal-hover:   #0f0f4d;
  --org-teal-light:   #e8e8f4;
  --org-brown-light:  #fdf0ee;
  --org-grey-light:   #F8F9FA;
  --org-grey-dark:    #212529;
  --org-text:         #212529;
  --org-text-muted:   #8E9AAF;
  --org-border:       #dee2e6;
  --org-border-hover: #adb5bd;
  --org-bg:           #ffffff;
  --org-bg-elevated:  #ffffff;
  --org-code-bg:      #F8F9FA;
  --org-shadow:       rgba(0, 0, 0, 0.08);
  --org-shadow-teal:  rgba(25, 25, 112, 0.10);

  /* Trees status colors */
  --status-positive:    #2D6A4F;
  --status-positive-bg: color-mix(in srgb, #2D6A4F 10%, transparent);
  --status-neutral:     #4A6FA5;
  --status-neutral-bg:  color-mix(in srgb, #4A6FA5 10%, transparent);
  --status-caution:     #B8860B;
  --status-caution-bg:  color-mix(in srgb, #B8860B 10%, transparent);
  --status-negative:    #D66853;
  --status-negative-bg: color-mix(in srgb, #D66853 10%, transparent);

  /* Typography — system stack */
  --org-font-family: Georgia, "Times New Roman", serif;
  --org-font-sans:   -apple-system, BlinkMacSystemFont, "Segoe UI",
                     Roboto, "Helvetica Neue", Arial, sans-serif;
  --org-font-mono:   "SFMono-Regular", Consolas,
                     "Liberation Mono", Menlo, Courier, monospace;

  color-scheme: light dark;
}

/* Pico CSS overrides — must match Pico 2's selector specificity */
[data-theme=light],
:root:not([data-theme=dark]) {
  --pico-primary:             var(--org-teal);
  --pico-primary-hover:       var(--org-teal-hover);
  --pico-primary-focus:       rgba(25, 25, 112, 0.2);
  --pico-primary-inverse:     #ffffff;
  --pico-muted-color:         var(--org-text-muted);
  --pico-muted-border-color:  var(--org-border);
}

/* ==========================================================================
   2. DARK MODE — prefers-color-scheme
   ========================================================================== */

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --org-teal:         #7B8FBF;
    --org-teal-hover:   #9BADD4;
    --org-teal-light:   #1a1a2e;
    --org-brown-light:  #2e2220;
    --org-grey-light:   #1e2028;
    --org-grey-dark:    #e0e0e0;
    --org-text:         #c8c8c8;
    --org-text-muted:   #8E9AAF;
    --org-border:       #343a50;
    --org-border-hover: #4e5570;
    --org-bg:           #141420;
    --org-bg-elevated:  #1c1c32;
    --org-code-bg:      #1e2028;
    --org-shadow:       rgba(0, 0, 0, 0.4);
    --org-shadow-teal:  rgba(123, 143, 191, 0.12);

    --pico-primary:             var(--org-teal);
    --pico-primary-hover:       var(--org-teal-hover);
    --pico-primary-focus:       rgba(123, 143, 191, 0.25);
    --pico-primary-inverse:     #ffffff;
    --pico-muted-color:         var(--org-text-muted);
    --pico-muted-border-color:  var(--org-border);
    --pico-accordion-open-summary-color: #c0c0c0;

    --org-gradient: linear-gradient(90deg, #7B8FBF 0%, #7EB3D4 30%, #8E9AAF 55%, #E8937E 80%, #A899CC 100%);

    --status-positive:    #52B788;
    --status-positive-bg: color-mix(in srgb, #52B788 15%, transparent);
    --status-neutral:     #7EB3D4;
    --status-neutral-bg:  color-mix(in srgb, #7EB3D4 15%, transparent);
    --status-caution:     #DAA520;
    --status-caution-bg:  color-mix(in srgb, #DAA520 15%, transparent);
    --status-negative:    #E8937E;
    --status-negative-bg: color-mix(in srgb, #E8937E 15%, transparent);
  }
}

/* ==========================================================================
   2b. DARK MODE — [data-theme=dark]
   ========================================================================== */

[data-theme=dark] {
  --org-teal:         #7B8FBF;
  --org-teal-hover:   #9BADD4;
  --org-teal-light:   #1a1a2e;
  --org-brown-light:  #2e2220;
  --org-grey-light:   #1e2028;
  --org-grey-dark:    #e0e0e0;
  --org-text:         #c8c8c8;
  --org-text-muted:   #8E9AAF;
  --org-border:       #343a50;
  --org-border-hover: #4e5570;
  --org-bg:           #141420;
  --org-bg-elevated:  #1c1c32;
  --org-code-bg:      #1e2028;
  --org-shadow:       rgba(0, 0, 0, 0.4);
  --org-shadow-teal:  rgba(123, 143, 191, 0.12);

  --pico-primary:             var(--org-teal);
  --pico-primary-hover:       var(--org-teal-hover);
  --pico-primary-focus:       rgba(123, 143, 191, 0.25);
  --pico-primary-inverse:     #ffffff;
  --pico-muted-color:         var(--org-text-muted);
  --pico-muted-border-color:  var(--org-border);
  --pico-accordion-open-summary-color: #c0c0c0;

  --org-gradient: linear-gradient(90deg, #7B8FBF 0%, #7EB3D4 30%, #8E9AAF 55%, #E8937E 80%, #A899CC 100%);

  --status-positive:    #52B788;
  --status-positive-bg: color-mix(in srgb, #52B788 15%, transparent);
  --status-neutral:     #7EB3D4;
  --status-neutral-bg:  color-mix(in srgb, #7EB3D4 15%, transparent);
  --status-caution:     #DAA520;
  --status-caution-bg:  color-mix(in srgb, #DAA520 15%, transparent);
  --status-negative:    #E8937E;
  --status-negative-bg: color-mix(in srgb, #E8937E 15%, transparent);
}

/* ==========================================================================
   3. BASE ELEMENTS (works on bare HTML — org-parse, and all others)
   ========================================================================== */

body {
  font-family: var(--org-font-sans);
  color: var(--org-text);
  background-color: var(--org-bg);
  line-height: 1.65;
}

a {
  color: var(--org-teal);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover { color: var(--org-teal-hover); text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--org-teal); outline-offset: 2px; }

h1, h2, h3, h4, h5, h6 {
  color: var(--org-teal);
  font-weight: 600;
}
h2 { border-bottom: 1px solid var(--org-border); padding-bottom: 0.4rem; }

/* Tables */
table { border-collapse: collapse; width: 100%; }
th {
  background-color: var(--org-teal);
  color: #ffffff;
  font-weight: 600;
  text-align: left;
  padding: 0.75rem 1rem;
}
thead th {
  background-color: var(--org-teal) !important;
  color: #ffffff !important;
}
td {
  border: 1px solid var(--org-border);
  padding: 0.625rem 1rem;
  color: var(--org-text);
  background-color: var(--org-bg-elevated);
}
tr:nth-child(even) td { background-color: var(--org-grey-light); }
tr:hover td { background-color: var(--org-teal-light); }

/* Code */
code {
  font-family: var(--org-font-mono);
  font-size: 0.875em;
  padding: 0.2em 0.4em;
  background-color: var(--org-code-bg);
  border: 1px solid var(--org-border);
  border-radius: 4px;
  color: var(--org-text);
}
pre {
  font-family: var(--org-font-mono);
  background-color: var(--org-code-bg);
  border: 1px solid var(--org-border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
}
pre code {
  padding: 0;
  background: none;
  border: none;
  font-size: 0.875rem;
  color: var(--org-grey-dark);
}

/* Images — subtle rounding and shadow */
img {
  border-radius: 3px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  margin: 1rem;
}

/* Time — subtle, no background */
time {
  color: var(--org-text-muted);
  background: transparent;
}

/* Blockquotes — Burned Orange accent */
blockquote {
  border-left: 4px solid var(--org-warm-brown);
  background-color: var(--org-brown-light);
  color: var(--org-text);
  padding: 1rem 1.5rem;
  margin: 1rem 0;
  border-radius: 0 6px 6px 0;
}
blockquote p:last-child { margin-bottom: 0; }

/* Description lists */
dd { margin-bottom: .8rem; }

/* Buttons */
button,
[type="submit"],
[type="button"] {
  background-color: var(--org-teal);
  border-color: var(--org-teal);
  color: #ffffff;
  border-radius: 4px;
  font-weight: 500;
  transition: background-color 0.15s ease, border-color 0.15s ease,
              box-shadow 0.15s ease;
}
button:hover, [type="submit"]:hover, [type="button"]:hover {
  background-color: var(--org-teal-hover);
  border-color: var(--org-teal-hover);
}
button:focus-visible, [type="submit"]:focus-visible, [type="button"]:focus-visible {
  box-shadow: 0 0 0 3px var(--pico-primary-focus);
}
button.secondary, button.outline {
  background-color: transparent;
  border: 1px solid var(--org-border);
  color: var(--org-text);
}
button.secondary:hover, button.outline:hover {
  border-color: var(--org-teal);
  color: var(--org-teal);
  background-color: transparent;
}

/* Accessibility */
:focus-visible { outline: 2px solid var(--org-teal); outline-offset: 2px; }
::selection { background-color: var(--org-teal); color: #ffffff; }

/* Syntax Highlighting — Lincoln palette mapped */
.builtin        { color: #B8860B; }  /* gold */
.comment, .comment-delimiter { color: #8E9AAF; }  /* cool grey */
.constant       { color: #D66853; }  /* burned orange */
.doc            { color: #8E9AAF; }
.function-name  { color: #4A6FA5; }  /* steel */
.keyword        { color: #191970; }  /* lincoln blue */
.string         { color: #2D6A4F; }  /* forest */
.variable-name  { color: #7B68AE; }  /* lavender */
.todo           { color: #C1513E; }  /* darkened orange */
.done           { color: #2D6A4F; }

@media (prefers-color-scheme: dark) {
  .builtin        { color: #DAA520; }
  .comment, .comment-delimiter { color: #8E9AAF; }
  .constant       { color: #E8937E; }
  .doc            { color: #a0a0a0; }
  .function-name  { color: #7EB3D4; }
  .keyword        { color: #7B8FBF; }
  .string         { color: #52B788; }
  .variable-name  { color: #A899CC; }
  .todo           { color: #E8937E; }
  .done           { color: #52B788; }
}
[data-theme=dark] {
  .builtin        { color: #DAA520; }
  .comment, .comment-delimiter { color: #8E9AAF; }
  .constant       { color: #E8937E; }
  .doc            { color: #a0a0a0; }
  .function-name  { color: #7EB3D4; }
  .keyword        { color: #7B8FBF; }
  .string         { color: #52B788; }
  .variable-name  { color: #A899CC; }
  .todo           { color: #E8937E; }
  .done           { color: #52B788; }
}

/* ==========================================================================
   4. PICO CSS OVERRIDES (topics)
   ========================================================================== */

header.container {
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  border-bottom: none;
}
header h1 { margin-bottom: 0.75rem; }
header h1 a {
  color: var(--org-grey-dark);
  text-decoration: none;
  font-weight: 700;
  transition: color 0.15s ease;
}
header h1 a:hover { color: var(--org-teal); text-decoration: none; }
header p { color: var(--org-text-muted); font-size: 1.1rem; margin-bottom: 0; }

/* Gradient bar */
header.container::after {
  content: '';
  display: block;
  height: 4px;
  margin-top: 1.5rem;
  background: var(--org-gradient);
  border-radius: 2px;
}

/* Search */
.search-row input[type="search"] {
  border: 1px solid var(--org-border);
  border-radius: 4px;
  background-color: var(--org-bg-elevated);
  color: var(--org-text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.search-row input[type="search"]::placeholder { color: var(--org-text-muted); }
.search-row input[type="search"]:focus {
  border-color: var(--org-teal);
  box-shadow: 0 0 0 3px var(--pico-primary-focus);
  outline: none;
}
#clear-search {
  color: var(--org-text-muted);
  border-color: var(--org-border);
  background-color: var(--org-bg-elevated);
  transition: all 0.15s ease;
}
#clear-search:hover { color: var(--org-teal); border-color: var(--org-teal); }

/* Cards */
.card {
  border: 1px solid var(--org-border);
  border-radius: 6px;
  background: var(--org-bg-elevated);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.card:hover {
  border-color: var(--org-teal);
  box-shadow: 0 6px 20px var(--org-shadow-teal);
  transform: translateY(-2px);
}
.card h2 {
  color: var(--org-teal);
  font-weight: 600;
  border-bottom: none;
  padding-bottom: 0;
  transition: color 0.15s ease;
}
.card:hover h2 { color: var(--org-teal-hover); }
.card p { color: var(--org-text-muted); }

/* Back link, view toggle */
.back-link { color: var(--org-teal); font-weight: 500; }
.back-link:hover { color: var(--org-teal-hover); }
.view-toggle { color: var(--org-text-muted); font-size: 0.95rem; margin-bottom: 1.25rem; }
.view-toggle a { color: var(--org-teal); font-weight: 500; }
.view-toggle a:hover { color: var(--org-teal-hover); text-decoration: underline; }

/* Details/Accordion */
details {
  border: 1px solid var(--org-border);
  border-radius: 6px;
  background-color: var(--org-bg-elevated);
  margin-bottom: 0.75rem;
  padding: .6rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
details:hover { border-color: var(--org-border-hover); }
details[open] { border-color: var(--org-teal); box-shadow: 0 2px 12px var(--org-shadow-teal); }
details summary {
  color: var(--org-grey-dark);
  font-weight: 500;
  cursor: pointer;
  padding: 0.5rem 0.75rem;
  transition: color 0.15s ease;
}
details summary:hover { color: var(--org-teal); }
details[open] summary { color: var(--org-teal); border-bottom: 1px solid var(--org-border); }
.permalink { color: var(--org-grey); opacity: 0.5; transition: opacity 0.15s ease, color 0.15s ease; }
.permalink:hover { color: var(--org-teal) !important; opacity: 1; }
details > div, details > p, details > ul, details > ol { padding: 0.625rem 0.75rem; }
details p, details ul, details ol { color: var(--org-text); }
details a { color: var(--org-teal); }
details a:hover { color: var(--org-teal-hover); text-decoration: underline; }
details pre, details code { background-color: var(--org-code-bg); }
details table { margin: 0; }

/* Footer */
footer.container {
  border-top: 1px solid var(--org-border);
  padding-top: 1.5rem;
  margin-top: 3rem;
  color: var(--org-text-muted);
  font-size: 0.9rem;
}
footer a { color: var(--org-teal); }
footer a:hover { color: var(--org-teal-hover); }

/* ==========================================================================
   5. TREES-SPECIFIC COMPONENTS
   ========================================================================== */

#app > header {
  background: var(--org-grey-light);
  border-bottom: none;
}
#app > header::after {
  content: '';
  display: block;
  height: 4px;
  background: var(--org-gradient);
  border-radius: 2px;
}
#app > header h1 { color: var(--org-teal); font-weight: 700; }
#app > header h2 { color: var(--org-text-muted); }
#app > footer {
  background: var(--org-grey-light);
  border-top: 1px solid var(--org-border);
  color: var(--org-text-muted);
}

progress::-webkit-progress-bar { background: var(--org-border); }
progress::-webkit-progress-value { background: var(--org-teal); }
progress::-moz-progress-bar { background: var(--org-teal); }

.trees button.pure-button,
.trees button.button {
  border: 1px solid var(--org-border);
  border-radius: 6px;
  background: var(--org-bg-elevated);
  color: var(--org-text);
  font-weight: 500;
  padding: 1rem 1.25rem;
  line-height: 1.5;
  transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.trees button.pure-button:hover,
.trees button.button:hover {
  border-color: var(--org-teal);
  background: var(--org-teal-light);
  box-shadow: 0 2px 8px var(--org-shadow-teal);
}
.trees button.pure-button:focus,
.trees button.button:focus { outline: 2px solid var(--org-teal); outline-offset: 2px; }

.trees button.pure-button.status-positive,
.trees button.button.status-positive { border-color: var(--status-positive); }
.trees button.pure-button.status-positive:hover,
.trees button.button.status-positive:hover { background: var(--status-positive-bg) !important; }

.trees button.pure-button.status-neutral,
.trees button.button.status-neutral { border-color: var(--status-neutral); }
.trees button.pure-button.status-neutral:hover,
.trees button.button.status-neutral:hover { background: var(--status-neutral-bg) !important; }

.trees button.pure-button.status-caution,
.trees button.button.status-caution { border-color: var(--status-caution); }
.trees button.pure-button.status-caution:hover,
.trees button.button.status-caution:hover { background: var(--status-caution-bg) !important; }

.trees button.pure-button.status-negative,
.trees button.button.status-negative { border-color: var(--status-negative); }
.trees button.pure-button.status-negative:hover,
.trees button.button.status-negative:hover { background: var(--status-negative-bg) !important; }

aside.help {
  background: var(--org-brown-light);
  border-left: 4px solid var(--org-warm-brown);
  border-radius: 0 6px 6px 0;
  color: var(--org-text);
  padding: 1rem 1.5rem;
}

.summary article {
  background: var(--org-grey-light);
  border-left: 3px solid var(--org-teal);
  border-radius: 6px;
  color: var(--org-text);
}

.score-result { border-radius: 6px; }

nav a { font-variant: small-caps; }
nav.actions a:hover { background: var(--org-teal-light); border-radius: 4px; }

/* ==========================================================================
   6. org-parse SPECIFIC OVERRIDES
   ========================================================================== */

header .document-title { border-color: var(--org-teal); }
.subtitle { color: var(--org-text-muted); }
.priority { color: var(--org-warm-brown); }
.tags { color: var(--org-text-muted); }
.footnotes { border-top-color: var(--org-border); }
.planning { color: var(--org-text-muted); }
.warning { background: var(--org-brown-light); border-left-color: var(--org-warm-brown); color: var(--org-text); }
.note { background: var(--org-teal-light); border-left-color: var(--org-teal); color: var(--org-text); }
figure { width: fit-content; margin-block: calc(var(--pico-typography-spacing-vertical, 1rem) + 0.4rem); }
figure > img { display: block; margin-bottom: 0.25rem; }
figure figcaption { color: var(--org-text-muted); font-size: 0.875em; padding: 0; }
figure.align-center { margin-left: auto; margin-right: auto; }
figure.align-center > img { margin-left: auto; margin-right: auto; }
figure.align-center > figcaption { text-align: center; }
figure.align-right { margin-left: auto; margin-right: 0; }
figure.align-right > img { margin-left: auto; margin-right: 0; }
figure.align-right > figcaption { text-align: right; }
figure.align-left { margin-left: 0; margin-right: auto; }
figure.align-left > img { margin-left: 0; margin-right: auto; }
figure.align-left > figcaption { text-align: left; }

/* ==========================================================================
   7. SCROLLBARS, PRINT, REDUCED MOTION
   ========================================================================== */

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--org-grey-light); }
::-webkit-scrollbar-thumb { background: var(--org-text-muted); border-radius: 5px; border: 2px solid var(--org-grey-light); }
::-webkit-scrollbar-thumb:hover { background: var(--org-grey); }
* { scrollbar-width: thin; scrollbar-color: var(--org-text-muted) var(--org-grey-light); }

.org-gradient-text { background: var(--org-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.org-gradient-border { border: none; background: var(--org-gradient); padding: 2px; border-radius: 6px; }
.org-gradient-border > * { background: var(--org-bg-elevated); border-radius: 4px; }

@media print {
  :root { --org-text: #000000; --org-grey-dark: #000000; --org-bg: #ffffff; --org-bg-elevated: #ffffff; }
  header.container::after { background: #191970; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  a { color: #000000; text-decoration: underline; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #666666; }
  details { border: 1px solid #cccccc; }
  details[open] { box-shadow: none; }
  .card:hover { transform: none; box-shadow: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .card:hover { transform: none; }
}