/* ARC42 Architekturdokumentation – Website Stylesheet */

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

:root {
  --navy:      #1e3a5f;
  --navy-2:    #2d5280;
  --blue:      #2563eb;
  --blue-bg:   #eff6ff;
  --text:      #111827;
  --muted:     #6b7280;
  --border:    #e5e7eb;
  --bg:        #ffffff;
  --bg-alt:    #f3f4f6;
  --radius:    6px;
  --nav-h:     52px;
  --sidebar-w: 240px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  margin: 0;
  padding: 0;
}

/* ── Navigation ─────────────────────────────────────────── */

.topnav {
  background: var(--navy);
  height: var(--nav-h);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 2px 8px rgba(0,0,0,.3);
  border-bottom: 1px solid rgba(255,255,255,.2);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: .85rem;
  flex-shrink: 0;
}
.nav-brand a { text-decoration: none; }
.nav-logo,
.topnav-logo {
  height: 28px;
  width: auto;
  display: block;
}
.nav-title {
  color: rgba(255,255,255,.9);
  font-size: .9rem;
  font-weight: 600;
  white-space: nowrap;
}
.nav-title:hover { color: #fff; text-decoration: underline; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav-links a {
  color: rgba(255,255,255,.82);
  text-decoration: none;
  font-size: .875rem;
  font-weight: 500;
  transition: color .15s;
}
.nav-links a:hover { color: #fff; text-decoration: underline; }

/* ── Layout: Sidebar + Content ──────────────────────────── */

.layout {
  display: flex;
  min-height: calc(100vh - var(--nav-h));
}

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  overflow-y: auto;
}

.sidebar-nav {
  padding: .75rem 0 2rem;
}
.sidebar-home {
  display: block;
  padding: .45rem 1.1rem .45rem 1.1rem;
  font-size: .78rem;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  margin-bottom: .25rem;
}
.sidebar-home:hover { color: var(--blue); }
#sidebar-toc:empty { display: none; }
#sidebar-toc-label[hidden] { display: none; }

/* ── Sidebar: collapsible groups ──────────────────────────── */
.sidebar-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  padding: .3rem 1.1rem;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .07em;
  color: var(--muted);
  text-transform: uppercase;
  text-align: left;
}
.sidebar-toggle:hover { color: var(--blue); }
.sidebar-toggle .chevron { font-size: .65rem; flex-shrink: 0; }
.sidebar-group-list,
.sidebar-subgroup-list { list-style: none; padding: 0; margin: 0 0 .25rem; }
.sidebar-subgroup-list { padding-left: .5rem; }
.sidebar-group-list > li > .sidebar-toggle {
  font-size: .68rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text);
  padding: .3rem 1.1rem .3rem 1.5rem;
}
.chapter-sub-pages {
  list-style: none;
  padding: 0 0 .2rem 1.5rem;
  margin: 0;
}
.chapter-sub-pages a {
  font-size: .73rem;
  color: var(--muted);
  text-decoration: none;
  display: block;
  padding: .15rem 0;
}
.chapter-sub-pages a:hover,
.chapter-sub-pages a.active { color: var(--blue); }

.sidebar-section-label {
  padding: 1rem 1.1rem .3rem;
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--muted);
}
.sidebar-nav ul {
  list-style: none;
  padding: 0;
  margin: 0 0 .25rem;
}
.sidebar-nav li a {
  display: block;
  padding: .32rem 1.1rem;
  font-size: .82rem;
  color: var(--text);
  text-decoration: none;
  line-height: 1.4;
  transition: background .12s, color .12s;
  border-left: 3px solid transparent;
}
.sidebar-nav li a:hover,
.sidebar-nav li a.active {
  background: var(--blue-bg);
  color: var(--blue);
  border-left-color: var(--blue);
  font-weight: 700;
}

/* ── Sidebar: active chapter sub-sections ────────────────── */

.sidebar-sub {
  list-style: none;
  padding: .15rem 0 .3rem 0 !important;
  margin: 0;
}
.sidebar-sub li { margin: 0; }
.sidebar-sub > li > a {
  padding-left: 1.8rem !important;
  font-size: .78rem !important;
  color: var(--muted) !important;
  border-left: 3px solid transparent;
}
.sidebar-sub > li > a:hover,
.sidebar-sub > li > a.active {
  color: var(--blue) !important;
  background: var(--blue-bg) !important;
  border-left-color: var(--blue) !important;
}
/* Second level (###) */
.sidebar-sub ul {
  list-style: none;
  padding: 0 !important;
  margin: 0;
}
.sidebar-sub ul li a {
  padding-left: 2.5rem !important;
  font-size: .74rem !important;
  color: var(--muted) !important;
}
.sidebar-sub ul li a:hover {
  color: var(--blue) !important;
  background: var(--blue-bg) !important;
}

/* ── Content ─────────────────────────────────────────────── */

.content {
  flex: 1;
  min-width: 0;
  max-width: 940px;
  padding: 2.5rem 2.5rem 4rem;
}
.content--home {
  max-width: none;
}

/* ── Pandoc-TOC ──────────────────────────────────────────── */

nav#TOC, div#TOC {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.5rem;
  margin-bottom: 2.5rem;
  font-size: .875rem;
}
nav#TOC::before, div#TOC::before {
  content: "Auf dieser Seite";
  font-weight: 700;
  display: block;
  margin-bottom: .6rem;
  font-size: .85rem;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: .05em;
}
#TOC ul { padding-left: 0; list-style: none; }
#TOC ul ul { padding-left: 1.1rem; }
#TOC li { margin: .18rem 0; }
#TOC a { color: var(--blue); text-decoration: none; }
#TOC a:hover { text-decoration: underline; }

/* ── Typografie ─────────────────────────────────────────── */

h1 {
  font-size: 1.9rem; font-weight: 700;
  margin: 0 0 1.5rem; line-height: 1.25;
  color: var(--navy);
}
h2 {
  font-size: 1.4rem; font-weight: 600;
  margin: 2.5rem 0 .9rem;
  padding-bottom: .35rem;
  border-bottom: 1px solid var(--border);
}
h3 { font-size: 1.1rem; font-weight: 600; margin: 2rem 0 .55rem; }
h4 { font-size: .975rem; font-weight: 600; margin: 1.5rem 0 .4rem; }
h4 .header-section-number,
h5 .header-section-number,
h6 .header-section-number { display: none; }

p   { margin: 0 0 1rem; }
a   { color: var(--blue); }
a:hover { text-decoration: underline; }

ul, ol { padding-left: 1.75rem; margin: 0 0 1rem; }
li { margin: .2rem 0; }

blockquote {
  border-left: 3px solid var(--border);
  margin: 1.5rem 0;
  padding: .7rem 1.25rem;
  color: var(--muted);
  background: var(--bg-alt);
  border-radius: 0 var(--radius) var(--radius) 0;
}

hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

/* ── Code ───────────────────────────────────────────────── */

code {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: .15em .4em;
  font-size: .875em;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
}
pre {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  margin: 0 0 1.5rem;
}
pre code { background: none; border: none; padding: 0; }

/* ── Tabellen ───────────────────────────────────────────── */

table {
  width: 100%;
  table-layout: auto;     /* Browser passt Breiten an Inhalt an */
  border-collapse: collapse;
  margin: 0 0 1.5rem;
  font-size: .88em;
  display: block;
  overflow-x: auto;
}
th {
  background: var(--navy);
  color: #fff;
  font-weight: 600;
  padding: .6rem .9rem;
  text-align: left;
  white-space: nowrap;    /* Header-Text liefert Browser Minimalbreiten-Hinweis */
}
td {
  padding: .55rem .9rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  min-width: 4rem;        /* verhindert erdrückte Spalten bei vielen Spalten */
}
tr:nth-child(even) td { background: var(--bg-alt); }
tr:hover td { background: var(--blue-bg); }

/* Erste Spalte (ID, Kürzel, Begriff) so schmal wie ihr Inhalt */
table th:first-child,
table td:first-child {
  width: 1%;
  white-space: nowrap;
}
/* Letzte Spalte bekommt möglichst viel Restbreite (Beschreibungen, Massnahmen) */
table td:last-child {
  width: auto;
}

/* Lange Pfade / Code-Strings in Tabellenzellen umbrechen statt die Spalte aufzudehnen */
td code {
  word-break: break-word;
  overflow-wrap: anywhere;
}

/* ── Bilder ─────────────────────────────────────────────── */

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  margin: 1.5rem auto;
  box-shadow: 0 2px 8px rgba(0,0,0,.1);
}
figure { margin: 1.5rem 0; }
figcaption {
  text-align: center;
  font-size: .85rem;
  color: var(--muted);
  margin-top: .5rem;
}

/* Bilder im Content-Bereich sind klickbar */
main img, .content img {
  cursor: zoom-in;
}

/* Vollbild-Link unter jedem Bild */
.img-link {
  text-align: right;
  margin: .4rem 0 1.5rem;
  font-size: .8rem;
}
.img-link a {
  color: var(--blue);
  text-decoration: none;
  padding: .2rem .6rem;
  border: 1px solid var(--blue);
  border-radius: var(--radius);
  transition: background .15s, color .15s;
}
.img-link a:hover {
  background: var(--blue);
  color: #fff;
  text-decoration: none;
}

/* Bildquelle-Link unter Bildern (öffnet extern; kein Lightbox-Klick) */
.img-source {
  text-align: left;
  margin: -.5rem 0 1.5rem;
  font-size: .75rem;
}
.img-source a {
  color: var(--muted);
  text-decoration: none;
}
.img-source a:hover {
  color: var(--blue);
  text-decoration: underline;
}

/* ── Hero (index.html) ──────────────────────────────────── */

.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
  margin: -2.5rem -2.5rem 2.5rem;   /* bündig mit .content-Padding */
  padding: 4rem 2.5rem;
  text-align: center;
}
.hero-content { max-width: 560px; margin: 0 auto; }

.hero-logo {
  width: 64px; height: 64px;
  border-radius: 14px;
  background: rgba(255,255,255,.15);
  border: 2px solid rgba(255,255,255,.25);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 800;
  margin: 0 auto 1.25rem;
}
.hero h1 {
  font-size: 2.5rem; font-weight: 800;
  margin: 0 0 .2rem; color: #fff; border: none;
}
.hero h2 {
  font-size: 1.2rem; font-weight: 400;
  margin: 0 0 .6rem;
  color: rgba(255,255,255,.72); border: none;
}
.hero-subtitle {
  color: rgba(255,255,255,.62);
  margin-bottom: 2rem;
  line-height: 1.6;
  font-size: .9rem;
}
.hero-actions {
  display: flex; gap: 1rem;
  justify-content: center; flex-wrap: wrap;
}

.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .7rem 1.5rem;
  border-radius: var(--radius);
  font-size: .9rem; font-weight: 600;
  text-decoration: none;
  transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0,0,0,.2); text-decoration: none; }
.btn-primary   { background: #fff; color: var(--navy); }
.btn-secondary {
  background: rgba(255,255,255,.12); color: #fff;
  border: 2px solid rgba(255,255,255,.35);
}
.btn-secondary:hover { background: rgba(255,255,255,.22); }

/* ── API Badge (domain list in TOC) ─────────────────────── */

.api-badge {
  display: inline-block;
  font-size: .68rem;
  font-weight: 600;
  padding: .08rem .5rem;
  margin-left: .5rem;
  background: var(--blue-bg);
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 10px;
  text-decoration: none;
  vertical-align: middle;
  transition: background .15s, color .15s;
}
.api-badge:hover {
  background: var(--blue);
  color: #fff;
  text-decoration: none;
}

/* ── TOC-Seite (toc.html) ───────────────────────────────── */

.toc-page h1  { font-size: 1.6rem; margin-bottom: 1.75rem; }
.toc-page h2  {
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--muted);
  margin: 2rem 0 .5rem; border: none;
}
.toc-page ul  { list-style: none; padding: 0; margin: 0 0 .5rem; }
.toc-page li  {
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: .45rem .4rem;
  transition: background .12s;
}
.toc-page li:hover {
  background: var(--blue-bg);
}
.toc-page li > a:first-child {
  flex: 1;
  color: var(--text);
  text-decoration: none;
  font-size: .92rem;
  transition: color .12s;
}
.toc-page li:hover > a:first-child {
  color: var(--blue);
}
.toc-page li > .api-badge {
  flex-shrink: 0;
}

/* ── Responsive ─────────────────────────────────────────── */

@media (max-width: 768px) {
  .sidebar { display: none; }
  .content { padding: 1.5rem 1.25rem 3rem; }
  h1 { font-size: 1.55rem; }
  h2 { font-size: 1.2rem; }
  .hero { margin: -1.5rem -1.25rem 2rem; padding: 3rem 1.5rem; }
  .hero h1 { font-size: 1.9rem; }
  table { font-size: .82em; }
  .nav-title { display: none; }
}

/* ── Chapter cards (index page) ─────────────────────────────── */
.chapter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.chapter-card {
  display: block;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  background: white;
  transition: box-shadow .15s, transform .15s;
}
.chapter-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,.1);
  transform: translateY(-2px);
}
.card-num {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--blue, #1d4ed8);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: 0.4rem;
}
.card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #1e293b;
  line-height: 1.4;
}

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.breadcrumb a { color: var(--blue, #1d4ed8); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* ── Search bar ─────────────────────────────────────────────── */
.search-input {
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.875rem;
  width: 200px;
  background: white;
}
.search-results {
  position: absolute;
  top: 52px;
  right: 16px;
  width: 360px;
  max-height: 400px;
  overflow-y: auto;
  background: white;
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,.12);
  z-index: 300;
  padding: 8px 0;
}
.search-result-item {
  padding: 8px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: #f1f5f9; }
.search-result-item a { text-decoration: none; color: inherit; display: block; }
.search-result-title   { font-weight: 600; font-size: 0.9rem; color: #1e293b; }
.search-result-excerpt { font-size: 0.8rem; color: #64748b; margin-top: 2px; }

/* ── Site footer ─────────────────────────────────────────────── */
.site-footer {
  margin-top: 3rem;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

/* ── Lightbox (Vollbild overlay) ─────────────────────────────── */
#cp-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, .82);
  overflow: auto;        /* backdrop scrolls for images larger than viewport */
  display: flex;
  cursor: zoom-out;
  padding: 1rem;
}
#cp-lightbox .cp-lb-inner {
  cursor: default;
  background: #fff;
  border-radius: 4px;
  line-height: 0;        /* remove extra space below inline img */
  margin: auto;          /* centers when smaller than viewport */
}
#cp-lightbox img {
  display: block;
  max-width: none; /* override global img { max-width: 100% } */
}

/* ── Topnav-Brandmark (Projekt-Initialen statt Logo-PNG) ────────────────── */
.topnav-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  min-width: 32px;
  padding: 0 .5rem;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  color: #fff;
  font-weight: 700;
  font-size: .85rem;
  letter-spacing: .04em;
  border-radius: 4px;
}