/* =========================================================
   TOKENS / CUSTOM PROPERTIES
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&family=DM+Mono:wght@400;500&family=Lora:ital@0;1&display=swap');

:root {
  --gutter: 2rem;
  --margin: 420px;
  --body-pad: 1.25rem;

  --content-min: 56ch;
  --content-max: 820px;
  --content: clamp(
    var(--content-min),
    calc(100vi - (2 * var(--body-pad)) - (2 * (var(--margin) + var(--gutter)))),
    var(--content-max)
  );

  --bleed: 48px;
  --fullwidth-cap: 860px;

  /* Core palette — warm dark */
  --bg:        #1c1a17;
  --page-bg:   #141210;
  --pane-bg:   #1e1c19;
  --fg:        #e8e2d9;
  --fg-dim:    #a09890;
  --fg-faint:  #5a534a;

  /* Accent — warm amber */
  --accent:        #c8964a;
  --accent-dim:    color-mix(in oklab, var(--accent) 40%, transparent);
  --accent-subtle: color-mix(in oklab, var(--accent) 10%, transparent);

  /* Headings */
  --heading:   #e8dcc8;
  --heading-2: #c8a878;
  --heading-3: #a88858;

  /* Links */
  --link:   #b8a888;
  --link-2: var(--link);

  /* Surfaces */
  --code-bg:    #161412;
  --border:     #2e2a24;
  --border-mid: #3a342c;

  /* Misc */
  --muted:      var(--fg-dim);
  --note-color: #5a534a;
  --note-bg:    transparent;
  --chip-bg:    #2a2620;
  --chip-fg:    var(--fg-dim);

  /* Aliases */
  --border-color:   var(--border);
  --text-color:     var(--fg);
  --muted-text:     var(--muted);
  --link-color:     var(--link);
  --link-hover-color: var(--fg);
  --bg-alt:         #161412;

  /* Spacing rhythm */
  --r1: 0.25rem;
  --r2: 0.5rem;
  --r3: 0.75rem;
  --r4: 1rem;
  --r5: 1.5rem;
  --r6: 2rem;
  --r8: 3rem;

  /* Typography */
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'Fira Mono', monospace;
  --font-serif: 'Lora', Georgia, serif;

  /* Motion */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:   cubic-bezier(0.4, 0, 1, 1);
  --dur-fast:  120ms;
  --dur-mid:   220ms;
  --dur-slow:  380ms;
}

/* =========================================================
   LIGHT THEME (optional override)
   ========================================================= */

[data-theme="light"] {
  --bg:        #f5f1eb;
  --page-bg:   #ede9e2;
  --pane-bg:   #f8f5f0;
  --fg:        #2a2520;
  --fg-dim:    #6a6058;
  --fg-faint:  #b0a898;
  --accent:    #a07030;
  --border:    #ddd8ce;
  --border-mid:#ccc6bb;
  --code-bg:   #edeae4;
  --bg-alt:    #ede9e2;
  --link:      #7a5c30;
  --heading:   #2a2520;
  --heading-2: #6a4820;
  --heading-3: #8a5c30;
  --chip-bg:   #e5e0d8;
  --chip-fg:   #6a6058;
}

/* =========================================================
   RESET / BASE
   ========================================================= */

*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--page-bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--dur-slow), color var(--dur-slow);
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

/* =========================================================
   TYPOGRAPHY
   ========================================================= */

h1 {
  font-size: 1.65rem;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--heading);
  margin: 0 0 var(--r5);
}

h2 {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--heading);
  margin: var(--r8) 0 var(--r4);
  padding-bottom: var(--r3);
  border-bottom: 1px solid var(--border);
}

h3 {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--heading-2);
  margin: var(--r6) 0 var(--r3);
}

h4 {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--heading-3);
  margin: var(--r5) 0 var(--r2);
}

p {
  margin: 0 0 var(--r4);
  font-weight: 300;
}

a {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}

a:hover {
  color: var(--fg);
  border-bottom-color: var(--fg-faint);
  text-decoration: none;
}

strong {
  font-weight: 500;
  color: var(--fg);
}

em {
  font-style: italic;
  font-family: var(--font-serif);
}

.tag {
  background-color: var(--chip-bg) !important;
  color: var(--accent) !important;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.15em 0.5em;
  border-radius: 3px;
  letter-spacing: 0.04em;
  border: 1px solid var(--border-mid);
}

/* =========================================================
   BANNER / PREAMBLE
   ========================================================= */

#preamble {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.banner-header {
  display: flex;
  align-items: center;
  gap: var(--r5);
  padding: 0.6rem var(--r5);
  max-width: 100%;
  position: relative;
}

.banner-left {
  display: flex;
  align-items: center;
  gap: var(--r4);
  flex-shrink: 0;
}

.banner-logo {
  height: 38px;
  width: 38px;
  border-radius: 50%;
  object-fit: cover;
  opacity: 0.92;
  transition: opacity var(--dur-fast);
}

.banner-logo:hover {
  opacity: 1;
}

#updated {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--fg-faint);
  white-space: nowrap;
  letter-spacing: 0.03em;
}

nav {
  display: flex;
  gap: var(--r4);
  font-size: 0.9rem;
  font-weight: 400;
}

nav a {
  color: var(--fg-dim);
  border-bottom: none;
  padding: var(--r1) 0;
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--dur-mid) var(--ease-out);
}

nav a:hover {
  color: var(--fg);
}

nav a:hover::after {
  width: 100%;
}

.banner-search {
  flex: 1;
  max-width: 26rem;
  position: relative;
}

#search-box {
  width: 100%;
  padding: 0.45rem 0.8rem;
  font-size: 0.875rem;
  font-family: var(--font-body);
  font-weight: 300;
  background-color: var(--bg-alt);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
  outline: none;
}

#search-box:focus {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

#search-box::placeholder {
  color: var(--fg-faint);
  font-style: italic;
}

#search-results {
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  right: 0;
  background: var(--bg);
  border: 1px solid var(--border-mid);
  border-radius: 6px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
  max-height: 20rem;
  overflow-y: auto;
  z-index: 1000;
}

#search-results > * {
  padding: 0.5rem 0.8rem;
  font-size: 0.875rem;
  line-height: 1.4;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: background var(--dur-fast);
}

#search-results > *:last-child { border-bottom: none; }
#search-results > *:hover,
#search-results > *.active {
  background: var(--accent-subtle);
  color: var(--fg);
}

.web-logo {
  height: auto;
  width: 22%;
  max-width: 80px;
  opacity: 0.7;
  transition: opacity var(--dur-fast);
  flex-shrink: 0;
}

.web-logo:hover { opacity: 1; }

.banner-actions {
  display: flex;
  align-items: center;
  gap: var(--r2);
  margin-left: auto;
  flex-shrink: 0;
}

#theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 5px;
  width: 32px;
  height: 32px;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--fg-dim);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color var(--dur-fast), border-color var(--dur-fast), background var(--dur-fast);
  line-height: 1;
}

#theme-toggle:hover {
  color: var(--fg);
  border-color: var(--border-mid);
  background: var(--chip-bg);
}

#close-all {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.3rem 0.7rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--fg-faint);
  cursor: pointer;
  letter-spacing: 0.04em;
  transition: color var(--dur-fast), border-color var(--dur-fast), background var(--dur-fast);
  white-space: nowrap;
}

#close-all:hover {
  color: var(--fg);
  border-color: var(--border-mid);
  background: var(--chip-bg);
}

/* =========================================================
   STACKED PANE LAYOUT
   ========================================================= */

#stack-root {
  position: relative;
  width: 100vw;
  height: calc(100dvh - 60px);
  overflow-x: auto;
  overflow-y: hidden;
  flex: 1 1 auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--border-mid) transparent;
}

#stack-root::-webkit-scrollbar { height: 5px; }
#stack-root::-webkit-scrollbar-thumb {
  background: var(--border-mid);
  border-radius: 3px;
}

.stack-track {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  width: max-content;
  height: 100%;
}

.stack-pane {
  flex: 0 0 auto;
  width: clamp(400px, 34vw, 800px);
  max-width: 100vw;
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  background-color: var(--pane-bg);
  border-right: 1px solid var(--border);
  position: relative;
  scroll-snap-align: start;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  /* Smooth entrance */
  animation: pane-in var(--dur-slow) var(--ease-out);
}

@keyframes pane-in {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}

.stack-pane::-webkit-scrollbar { width: 5px; }
.stack-pane::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

/* Depth shadow on last pane */
.stack-pane:last-child {
  box-shadow: -8px 0 32px rgba(0,0,0,0.25);
}

/* Subtle vertical separator gradient */
.stack-pane::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(
    to bottom,
    transparent,
    var(--border-mid) 20%,
    var(--border-mid) 80%,
    transparent
  );
  pointer-events: none;
}

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

#content.content {
  max-width: var(--content);
  margin-left: auto !important;
  margin-right: auto !important;
  padding: var(--r6) var(--r5);
  box-sizing: content-box;
  position: relative;
}

/* =========================================================
   TITLE SECTION
   ========================================================= */

.title-section {
  position: relative;
  margin-bottom: var(--r6);
  padding: var(--r5) var(--r5) var(--r4);
  padding-right: 7rem;
  background: color-mix(in oklab, var(--bg) 50%, var(--pane-bg) 50%);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.title-section .title {
  margin: 0 0 var(--r4);
  padding-bottom: var(--r4);
  border-bottom: 1px solid var(--border);
  font-size: 1.5rem;
}

.title-metadata {
  display: flex;
  flex-wrap: wrap;
  gap: var(--r4);
}

.metadata-item {
  display: flex;
  align-items: baseline;
  gap: var(--r2);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

.metadata-label {
  color: var(--fg-faint);
  font-style: normal;
}

.metadata-value {
  color: var(--accent);
}

/* =========================================================
   TITLE CONTROLS
   ========================================================= */

.title-controls {
  position: absolute;
  top: var(--r4);
  right: var(--r4);
  display: flex;
  gap: var(--r2);
  z-index: 10;
}

.title-controls button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  cursor: pointer;
  color: var(--fg-faint);
  transition: color var(--dur-fast), border-color var(--dur-fast), background var(--dur-fast);
  line-height: 1;
}

.title-controls button:hover {
  color: var(--fg);
  border-color: var(--border-mid);
  background: var(--chip-bg);
}

.pane-close {
  font-size: 1rem !important;
}

/* Hide close on root pane */
.pane-root .pane-close {
  display: none !important;
}

/* Hide old pane-header */
.pane-header { display: none; }

/* =========================================================
   IMAGES
   ========================================================= */

#content .figure,
#content img:not(.fullwidth) {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

/* =========================================================
   LISTS
   ========================================================= */

ul, ol {
  margin: var(--r3) 0 var(--r5) var(--r4);
  padding: 0;
  line-height: 1.7;
}

ul { list-style: none; }

ul li {
  position: relative;
  padding-left: 1.4em;
}

ul li::before {
  content: "·";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1em;
}

ol {
  counter-reset: list-counter;
  list-style: none;
}

ol li {
  counter-increment: list-counter;
  position: relative;
  padding-left: 2em;
}

ol li::before {
  content: counter(list-counter);
  position: absolute;
  left: 0;
  top: 0.05em;
  font-family: var(--font-mono);
  font-size: 0.78em;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.04em;
  opacity: 0.7;
}

li {
  margin-bottom: 0.45rem;
  display: flow-root;
}

li::after { content: none; }

li ul, li ol {
  margin-top: var(--r2);
  margin-bottom: var(--r2);
}

li ul li::before {
  content: "–";
  font-weight: normal;
  color: var(--fg-faint);
  font-size: 1em;
}

/* =========================================================
   BLOCKQUOTE / EPIGRAPH
   ========================================================= */

blockquote {
  margin: var(--r5) 0;
  padding: var(--r4) var(--r5);
  border-left: 2px solid var(--accent);
  background: var(--accent-subtle);
  border-radius: 0 6px 6px 0;
  color: var(--fg-dim);
  font-family: var(--font-serif);
  font-style: italic;
  line-height: 1.75;
}

blockquote p { margin: 0; }

.epigraph {
  margin: var(--r6) auto;
  max-width: 82%;
}

.epigraph blockquote {
  margin: 0;
  padding: var(--r4) var(--r5);
  border-left: 2px solid var(--accent-dim);
}

.epigraph blockquote footer {
  margin-top: var(--r3);
  font-style: normal;
  font-size: 0.85em;
  color: var(--fg-faint);
  text-align: right;
  font-family: var(--font-mono);
}

.epigraph blockquote cite {
  font-style: italic;
  color: var(--accent);
}

/* =========================================================
   CODE
   ========================================================= */

:not(pre) > code {
  padding: 0.15em 0.45em;
  margin: 0 0.1em;
  font-family: var(--font-mono);
  font-size: 0.8em;
  background: var(--code-bg);
  color: var(--heading-2);
  border: 1px solid var(--border-mid);
  border-radius: 4px;
}

pre {
  background: var(--code-bg);
}

.org-src-container {
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  margin: var(--r5) auto;
  overflow: hidden;
  position: relative;
}

.org-src-container > pre {
  overflow: auto;
  margin: 0;
  padding: var(--r5) var(--r4);
}

.org-src-container > pre:before {
  display: block;
  position: sticky;
  top: 0;
  background: color-mix(in oklab, var(--code-bg) 80%, var(--border) 20%);
  color: var(--fg-faint);
  padding: 0.35rem var(--r4);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}

.org-src-container > pre.src-bash:before        { content: "bash"; }
.org-src-container > pre.src-sh:before          { content: "sh"; }
.org-src-container > pre.src-shell:before       { content: "shell"; }
.org-src-container > pre.src-python:before      { content: "python"; }
.org-src-container > pre.src-emacs-lisp:before  { content: "emacs lisp"; }
.org-src-container > pre.src-js:before,
.org-src-container > pre.src-javascript:before  { content: "javascript"; }
.org-src-container > pre.src-typescript:before  { content: "typescript"; }
.org-src-container > pre.src-html:before        { content: "html"; }
.org-src-container > pre.src-css:before         { content: "css"; }
.org-src-container > pre.src-c:before           { content: "c"; }
.org-src-container > pre.src-cpp:before         { content: "c++"; }
.org-src-container > pre.src-java:before        { content: "java"; }
.org-src-container > pre.src-rust:before        { content: "rust"; }
.org-src-container > pre.src-R:before           { content: "R"; }

pre.src::before { content: none !important; }
pre.src {
  padding: var(--r5) var(--r4) var(--r4);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.55;
  overflow-x: auto;
  white-space: pre-wrap;
  background: var(--code-bg);
}

/* Copy button */
.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: var(--chip-bg);
  color: var(--fg-faint);
  border: 1px solid var(--border-mid);
  border-radius: 4px;
  padding: 0.2em 0.6em;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  cursor: pointer;
  z-index: 10;
  transition: color var(--dur-fast), border-color var(--dur-fast), background var(--dur-fast);
}

.copy-btn:hover {
  color: var(--fg);
  border-color: var(--accent-dim);
  background: var(--accent-subtle);
}

/* =========================================================
   TABLE OF CONTENTS
   ========================================================= */

#table-of-contents {
  margin-bottom: var(--r6);
}

#text-table-of-contents ul {
  margin: var(--r2) 0;
}

#text-table-of-contents a {
  font-size: 0.875rem;
  color: var(--fg-dim);
  border-bottom: none;
  transition: color var(--dur-fast);
}

#text-table-of-contents a:hover {
  color: var(--fg);
  border-bottom: none;
}

#text-table-of-contents a.is-active {
  color: var(--accent);
}

#text-table-of-contents a[aria-current] {
  color: var(--accent);
}

/* =========================================================
   SIDENOTES / FOOTNOTES
   ========================================================= */

.sidenote {
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--fg-dim);
  font-family: var(--font-serif);
  font-style: italic;
}

/* =========================================================
   BACKLINKS
   ========================================================= */

.backlinks-section {
  margin-top: var(--r8);
  padding-top: var(--r5);
  border-top: 1px solid var(--border);
  opacity: 0.9;
}

.backlinks-section h2 {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
  border-bottom: none;
  margin-top: 0;
  padding-bottom: 0;
}

.backlinks-list {
  margin-top: var(--r3);
  padding-left: 0;
}

.backlinks-list li {
  margin-bottom: var(--r2);
  font-size: 0.875rem;
  list-style: none;
  padding-left: 0;
}

.backlinks-list li::before {
  content: "↩ ";
  font-size: 0.8em;
  opacity: 0.4;
  margin-right: var(--r1);
  color: var(--accent);
}

.backlinks-list li a {
  color: var(--link);
  border-bottom: 1px solid transparent;
  font-weight: 400;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}

.backlinks-list li a:hover {
  color: var(--fg);
  border-bottom-color: var(--fg-faint);
}

/* =========================================================
   FOOTER
   ========================================================= */

footer {
  color: var(--fg-faint);
  padding: var(--r4) var(--r5);
  border-top: 1px solid var(--border);
  background: var(--bg);
  text-align: center;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
  flex-shrink: 0;
  margin-top: 0;
}

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

/* =========================================================
   FULLSCREEN PANE MODE
   ========================================================= */

body.pane-fullscreen #stack-root { overflow: hidden; }

body.pane-fullscreen .stack-track { width: 100%; }

body.pane-fullscreen .stack-pane {
  width: 100% !important;
  max-width: none;
  border-right: none;
}

body.pane-fullscreen .stack-pane::after { display: none; }

body.pane-fullscreen .stack-pane:not(.is-fullscreen) { display: none; }

body.pane-fullscreen #content.content { max-width: 860px; }

/* =========================================================
   BIGGER-PICTURE GALLERY
   ========================================================= */

.bp-x { right: 72px; }
.bp-next, .bp-prev { right: 8px; }
.bp-prev { left: 8px; }
.bp-wrap { transition: opacity 0.18s ease; }
.bp-wrap.bp-fadeout { opacity: 0; }
.bp-controls {
  padding-top: env(safe-area-inset-top, 0);
  padding-right: calc(env(safe-area-inset-right, 0) + 8px);
}

/* =========================================================
   UTILITIES
   ========================================================= */

.hidden { display: none !important; }
.recipe-meta td:first-child { font-weight: 600; white-space: nowrap; }
.recipe-meta { font-size: 0.9em; opacity: 0.85; }
/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 768px) {
  .banner-header {
    flex-wrap: wrap;
    gap: var(--r3);
    padding: var(--r3) var(--r4);
  }

  .banner-left {
    flex-direction: row;
    gap: var(--r3);
  }

  .banner-search {
    max-width: 100%;
    width: 100%;
    order: 3;
  }

  .web-logo { display: none; }

  .banner-actions {
    margin-left: 0;
  }

  #stack-root {
    overflow-x: hidden;
    overflow-y: auto;
    height: auto;
  }

  .stack-track {
    flex-direction: column;
    width: 100%;
  }

  .stack-pane {
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .pane-fullscreen { display: none !important; }

  .title-section {
    padding-right: var(--r5);
  }

  .title-controls {
    position: static;
    margin-bottom: var(--r3);
    justify-content: flex-end;
  }
}
.audio-player {
  margin: 1rem 0;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  background: var(--bg-secondary);
}

.audio-label {
  font-size: 0.85rem;
  opacity: 0.7;
  margin-bottom: 0.4rem;
}

.audio-player audio {
  width: 100%;
}