/* ============================================================
   Free Eggbert Documentation — style.css
   Shared stylesheet for all documentation pages.
   ============================================================ */

/* ---- CSS Custom Properties (Light Mode) ---- */
:root {
  /* Base colors */
  --c-bg:            #ffffff;
  --c-bg-alt:        #f6f8fa;
  --c-bg-alt2:       #eef1f4;
  --c-border:        #d0d7de;
  --c-text:          #1f2328;
  --c-text-muted:    #656d76;
  --c-link:          #0969da;
  --c-link-hover:    #0550ae;

  /* Code */
  --c-code-bg:       #f6f8fa;
  --c-code-text:     #1f2328;
  --c-code-border:   #d0d7de;

  /* Sidebar */
  --c-sidebar-bg:          #1e2132;
  --c-sidebar-text:        #a8b2c8;
  --c-sidebar-active-bg:   rgba(91, 141, 238, 0.18);
  --c-sidebar-active-text: #7baefc;
  --c-sidebar-hover-bg:    rgba(255, 255, 255, 0.06);
  --c-sidebar-section:     #5e6a90;
  --c-sidebar-border:      rgba(255, 255, 255, 0.07);

  /* Callouts */
  --c-note-bg:     #eef6ff;
  --c-note-border: #1a73e8;
  --c-note-text:   #0c4a9e;
  --c-warn-bg:     #fffbeb;
  --c-warn-border: #d97706;
  --c-warn-text:   #92400e;
  --c-danger-bg:   #fff1f2;
  --c-danger-border: #dc2626;
  --c-danger-text: #991b1b;
  --c-verify-bg:   #fff7ed;
  --c-verify-border: #f97316;
  --c-verify-text: #9a3412;
  --c-todo-bg:     #f0fdf4;
  --c-todo-border: #16a34a;
  --c-todo-text:   #14532d;

  /* Header */
  --c-header-bg:   #1e2132;
  --c-header-text: #e2e8f0;

  /* Misc */
  --c-table-head-bg: #f6f8fa;
  --c-table-alt-bg:  #fafbfc;

  /* Layout */
  --sidebar-width:    270px;
  --header-height:    56px;
  --content-max-w:    900px;
  --content-padding:  2rem 2.5rem;

  /* Typography */
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  --font-code: "SFMono-Regular", Consolas, "Liberation Mono", Menlo,
               "Courier New", monospace;
  --font-size-base: 15px;
  --line-height:    1.65;
}

/* ---- Dark Mode ---- */
[data-theme="dark"] {
  --c-bg:            #0d1117;
  --c-bg-alt:        #161b22;
  --c-bg-alt2:       #1c2128;
  --c-border:        #30363d;
  --c-text:          #e6edf3;
  --c-text-muted:    #848d97;
  --c-link:          #58a6ff;
  --c-link-hover:    #79c0ff;

  --c-code-bg:       #161b22;
  --c-code-text:     #e6edf3;
  --c-code-border:   #30363d;

  --c-sidebar-bg:          #161b22;
  --c-sidebar-text:        #8b949e;
  --c-sidebar-active-bg:   rgba(88, 166, 255, 0.12);
  --c-sidebar-active-text: #58a6ff;
  --c-sidebar-hover-bg:    rgba(255, 255, 255, 0.05);
  --c-sidebar-section:     #4d5566;
  --c-sidebar-border:      rgba(255, 255, 255, 0.06);

  --c-note-bg:     #0c2040;
  --c-note-border: #388bfd;
  --c-note-text:   #79c0ff;
  --c-warn-bg:     #1d1200;
  --c-warn-border: #d29922;
  --c-warn-text:   #e3b341;
  --c-danger-bg:   #1d0000;
  --c-danger-border: #f85149;
  --c-danger-text: #ff7b72;
  --c-verify-bg:   #1d1000;
  --c-verify-border: #fb8f44;
  --c-verify-text: #ffa657;
  --c-todo-bg:     #001d0a;
  --c-todo-border: #3fb950;
  --c-todo-text:   #56d364;

  --c-header-bg:   #161b22;
  --c-header-text: #e6edf3;

  --c-table-head-bg: #161b22;
  --c-table-alt-bg:  #0d1117;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: var(--line-height);
  color: var(--c-text);
  background-color: var(--c-bg);
  transition: background-color 0.2s, color 0.2s;
}

img { max-width: 100%; height: auto; }
a { color: var(--c-link); text-decoration: none; }
a:hover { color: var(--c-link-hover); text-decoration: underline; }
hr { border: 0; border-top: 1px solid var(--c-border); margin: 2rem 0; }

/* ---- Layout ---- */
#page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

#content-wrapper {
  display: flex;
  flex: 1;
  margin-top: var(--header-height);
}

/* ---- Header ---- */
#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--c-header-bg);
  color: var(--c-header-text);
  z-index: 100;
  box-shadow: 0 1px 0 rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 0 1.25rem;
  gap: 1rem;
}

.site-logo {
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo:hover { color: #e0e8ff; text-decoration: none; }

.logo-egg {
  display: inline-block;
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, #f8d860, #f0a030);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  flex-shrink: 0;
}

.header-spacer { flex: 1; }

.header-search {
  display: flex;
  align-items: center;
}

#search-input {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  border-radius: 6px;
  padding: 0.3rem 0.7rem;
  font-size: 0.875rem;
  width: 200px;
  outline: none;
  transition: all 0.2s;
}

#search-input::placeholder { color: rgba(255,255,255,0.4); }
#search-input:focus { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.3); }

#theme-toggle {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--c-header-text);
  border-radius: 6px;
  padding: 0.3rem 0.8rem;
  font-size: 0.8rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
}

#theme-toggle:hover { background: rgba(255,255,255,0.15); }

#menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
}

/* ---- Sidebar ---- */
#sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--c-sidebar-bg);
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 50;
  transition: transform 0.25s ease;
}

#sidebar::-webkit-scrollbar { width: 4px; }
#sidebar::-webkit-scrollbar-track { background: transparent; }
#sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.sidebar-search-wrap {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--c-sidebar-border);
}

.sidebar-search {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--c-sidebar-text);
  border-radius: 5px;
  padding: 0.35rem 0.6rem;
  font-size: 0.8rem;
  outline: none;
}

.sidebar-search::placeholder { color: rgba(168,178,200,0.5); }
.sidebar-search:focus { border-color: rgba(91,141,238,0.5); background: rgba(255,255,255,0.09); }

.sidebar-nav { padding: 0.5rem 0; }

.nav-section {
  padding: 0.9rem 1rem 0.2rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-sidebar-section);
}

.nav-section:not(:first-child) {
  border-top: 1px solid var(--c-sidebar-border);
  margin-top: 0.5rem;
}

.sidebar-nav a {
  display: block;
  padding: 0.35rem 1rem 0.35rem 1.25rem;
  color: var(--c-sidebar-text);
  text-decoration: none;
  font-size: 0.88rem;
  border-radius: 0;
  transition: background 0.15s, color 0.15s;
  border-left: 2px solid transparent;
  word-break: break-word;
}

.sidebar-nav a:hover {
  background: var(--c-sidebar-hover-bg);
  color: #c8d4f0;
  text-decoration: none;
}

.sidebar-nav a.active {
  background: var(--c-sidebar-active-bg);
  color: var(--c-sidebar-active-text);
  border-left-color: var(--c-sidebar-active-text);
  font-weight: 600;
}

.sidebar-nav a.hidden { display: none; }

/* ---- Main Content ---- */
#main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: var(--content-padding);
  max-width: calc(var(--content-max-w) + var(--sidebar-width));
  min-width: 0;
}

.content-inner {
  max-width: var(--content-max-w);
}

/* ---- Breadcrumb ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.83rem;
  color: var(--c-text-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--c-link); }
.breadcrumb .sep { color: var(--c-border); }
.breadcrumb .current { color: var(--c-text-muted); }

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 600;
  color: var(--c-text);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

h1 { font-size: 1.9rem; margin-top: 0; border-bottom: 1px solid var(--c-border); padding-bottom: 0.5rem; }
h2 { font-size: 1.4rem; border-bottom: 1px solid var(--c-border); padding-bottom: 0.3rem; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; font-weight: 700; }

p { margin-bottom: 1rem; }

ul, ol {
  margin: 0.5rem 0 1rem 1.5rem;
}
li { margin-bottom: 0.25rem; }
li > ul, li > ol { margin-top: 0.25rem; margin-bottom: 0.25rem; }

strong { font-weight: 700; }
em { font-style: italic; }
mark { background: #fff176; color: #000; padding: 0.1em 0.2em; border-radius: 2px; }

/* ---- Code ---- */
code {
  font-family: var(--font-code);
  font-size: 0.88em;
  background: var(--c-code-bg);
  color: var(--c-code-text);
  border: 1px solid var(--c-code-border);
  border-radius: 4px;
  padding: 0.15em 0.4em;
}

pre {
  background: var(--c-code-bg);
  border: 1px solid var(--c-code-border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
  font-size: 0.875rem;
  line-height: 1.55;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  border-radius: 0;
}

[data-theme="dark"] pre { background: #0d1117; border-color: #21262d; }

/* Keyword highlighting helpers */
.kw  { color: #cf222e; }
.kw2 { color: #8250df; }
.str { color: #0a3069; }
.cmt { color: #6e7781; font-style: italic; }
.num { color: #0550ae; }
.typ { color: #953800; }
[data-theme="dark"] .kw  { color: #ff7b72; }
[data-theme="dark"] .kw2 { color: #d2a8ff; }
[data-theme="dark"] .str { color: #a5d6ff; }
[data-theme="dark"] .cmt { color: #8b949e; }
[data-theme="dark"] .num { color: #79c0ff; }
[data-theme="dark"] .typ { color: #ffa657; }

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; margin: 1rem 0 1.5rem; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th {
  background: var(--c-table-head-bg);
  color: var(--c-text);
  font-weight: 600;
  text-align: left;
  padding: 0.6rem 0.9rem;
  border-bottom: 2px solid var(--c-border);
  white-space: nowrap;
}

td {
  padding: 0.5rem 0.9rem;
  border-bottom: 1px solid var(--c-border);
  vertical-align: top;
}

tr:last-child td { border-bottom: none; }
tr:nth-child(even) td { background: var(--c-table-alt-bg); }
tr:hover td { background: var(--c-bg-alt); }

/* ---- Callout Boxes ---- */
.callout {
  display: flex;
  gap: 0.75rem;
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1rem 0 1.5rem;
  border-left: 4px solid;
}

.callout-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.05rem;
}

.callout-body { flex: 1; min-width: 0; }
.callout-body > *:last-child { margin-bottom: 0; }
.callout-title {
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.callout.note    { background: var(--c-note-bg);   border-color: var(--c-note-border);   color: var(--c-note-text); }
.callout.warning { background: var(--c-warn-bg);   border-color: var(--c-warn-border);   color: var(--c-warn-text); }
.callout.danger  { background: var(--c-danger-bg); border-color: var(--c-danger-border); color: var(--c-danger-text); }
.callout.verify  { background: var(--c-verify-bg); border-color: var(--c-verify-border); color: var(--c-verify-text); }
.callout.todo    { background: var(--c-todo-bg);   border-color: var(--c-todo-border);   color: var(--c-todo-text); }

.callout a { color: inherit; text-decoration: underline; }

/* ---- Status Badges ---- */
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15em 0.6em;
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 0.4em;
}

.badge-wip      { background: #fff3cd; color: #856404; }
.badge-done     { background: #d1fae5; color: #065f46; }
.badge-broken   { background: #fee2e2; color: #991b1b; }
.badge-verify   { background: #ffedd5; color: #9a3412; }
.badge-partial  { background: #e0e7ff; color: #3730a3; }

[data-theme="dark"] .badge-wip    { background: #2a1f00; color: #e3b341; }
[data-theme="dark"] .badge-done   { background: #001d0a; color: #56d364; }
[data-theme="dark"] .badge-broken { background: #1d0000; color: #ff7b72; }
[data-theme="dark"] .badge-verify { background: #1d1000; color: #ffa657; }
[data-theme="dark"] .badge-partial { background: #1a1b40; color: #7b83d4; }

/* ---- Hero / Landing ---- */
.hero {
  background: linear-gradient(135deg, #1e2132 0%, #2a3160 100%);
  color: #fff;
  border-radius: 12px;
  padding: 2.5rem 2rem;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 2.2rem;
  color: #fff;
  border: none;
  padding: 0;
  margin-top: 0;
}

.hero .tagline {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  margin-top: 0.5rem;
}

.hero .status-badges { margin-top: 1.2rem; display: flex; gap: 0.5rem; flex-wrap: wrap; }

.hero-badge {
  display: inline-block;
  padding: 0.35em 0.9em;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.08);
}

/* ---- Quick Links / Cards ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.card {
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: 8px;
  padding: 1.25rem;
  text-decoration: none;
  color: var(--c-text);
  transition: border-color 0.2s, box-shadow 0.2s;
  display: block;
}

.card:hover {
  border-color: var(--c-link);
  box-shadow: 0 2px 8px rgba(9,105,218,0.12);
  text-decoration: none;
  color: var(--c-text);
}

.card-icon { font-size: 1.5rem; margin-bottom: 0.6rem; }
.card h3 { font-size: 1rem; margin: 0 0 0.35rem; color: var(--c-link); }
.card p { font-size: 0.85rem; color: var(--c-text-muted); margin: 0; }

/* ---- File Tree ---- */
.file-tree {
  background: var(--c-code-bg);
  border: 1px solid var(--c-code-border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  font-family: var(--font-code);
  font-size: 0.85rem;
  line-height: 1.7;
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
}

.file-tree .dir  { color: var(--c-link); font-weight: 600; }
.file-tree .file { color: var(--c-code-text); }
.file-tree .note { color: var(--c-text-muted); font-style: italic; }

/* ---- Page Navigation (Prev/Next) ---- */
.page-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-border);
  gap: 1rem;
}

.page-nav-link {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  color: var(--c-text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  max-width: 45%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--c-border);
  border-radius: 8px;
  transition: border-color 0.2s;
}

.page-nav-link:hover { border-color: var(--c-link); text-decoration: none; }
.page-nav-link .pnl-label { font-weight: 600; color: var(--c-link); }
.page-nav-link.next { text-align: right; margin-left: auto; }

/* ---- Back to Top ---- */
#back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--c-link);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

#back-to-top.visible { opacity: 1; pointer-events: auto; }
#back-to-top:hover { background: var(--c-link-hover); }

/* ---- Anchor links ---- */
h2 > a.anchor, h3 > a.anchor, h4 > a.anchor {
  color: var(--c-text-muted);
  opacity: 0;
  margin-left: 0.4em;
  font-size: 0.9em;
  text-decoration: none;
  transition: opacity 0.15s;
}

h2:hover > a.anchor,
h3:hover > a.anchor,
h4:hover > a.anchor { opacity: 1; }

/* ---- Misc helpers ---- */
.text-muted { color: var(--c-text-muted); }
.text-sm    { font-size: 0.875rem; }
.mb-0       { margin-bottom: 0; }
.mt-0       { margin-top: 0; }
.mono       { font-family: var(--font-code); }
.block      { display: block; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1rem 0 1.5rem;
}

@media (max-width: 640px) { .two-col { grid-template-columns: 1fr; } }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  #sidebar {
    transform: translateX(-100%);
    z-index: 90;
  }
  #sidebar.open { transform: translateX(0); }
  #main-content { margin-left: 0; }
  #menu-toggle { display: block; }

  .header-search { display: none; }

  .hero h1 { font-size: 1.6rem; }
  --content-padding: 1.25rem;

  #main-content { padding: 1.25rem; }
}

@media (max-width: 600px) {
  .card-grid { grid-template-columns: 1fr; }
  .page-nav { flex-direction: column; }
  .page-nav-link { max-width: 100%; }
  .page-nav-link.next { text-align: left; margin-left: 0; }
}

/* ---- Overlay for mobile sidebar ---- */
#sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 89;
}