/* ============================================================
   Admin-Handbuch – Globales Stylesheet
   ============================================================ */

:root {
  --bg-body:       #0f1117;
  --bg-card:       #1a1e2e;
  --bg-sidebar:    #141824;
  --bg-content:    #1a1e2e;
  --bg-code:       #0d1117;
  --accent:        #4f9cf9;
  --accent-hover:  #2f7fe4;
  --text-main:     #e2e8f0;
  --text-muted:    #8896b3;
  --text-heading:  #ffffff;
  --border:        #2a3150;
  --tag-bg:        #1e3a5f;
  --tag-text:      #7ec8f4;
  --sidebar-w:     260px;
  --topbar-h:      60px;
  --radius:        10px;
  --shadow:        0 4px 24px rgba(0,0,0,.45);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-body);
  color: var(--text-main);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
img { max-width: 100%; height: auto; border-radius: var(--radius); }

/* ============================================================
   TOP-BAR (gemeinsam für alle Seiten)
   ============================================================ */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 14px;
  z-index: 100;
}
.topbar .logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: .03em;
}
.topbar .logo span { color: var(--accent); }
.topbar .breadcrumb {
  font-size: .82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.topbar .breadcrumb a { color: var(--text-muted); }
.topbar .breadcrumb a:hover { color: var(--accent); }
.topbar .breadcrumb .sep { opacity: .5; }
.topbar-home-btn {
  margin-left: auto;
  padding: 6px 16px;
  border-radius: 6px;
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: .82rem;
  font-weight: 600;
  transition: background .2s;
}
.topbar-home-btn:hover { background: var(--accent); color: #fff; text-decoration: none; }

/* ============================================================
   INDEX – HERO
   ============================================================ */
.index-wrap {
  padding-top: var(--topbar-h);
}
.hero {
  text-align: center;
  padding: 64px 24px 48px;
}
.hero h1 {
  font-size: 2.4rem;
  color: var(--text-heading);
  margin-bottom: 12px;
}
.hero h1 span { color: var(--accent); }
.hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ---- Kachel-Grid ---- */
.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 22px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 28px 72px;
}
.tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: transform .18s, border-color .18s, box-shadow .18s;
  text-align: center;
}
.tile:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 8px 30px rgba(79,156,249,.18);
  text-decoration: none;
}
.tile-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--tag-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}
.tile h2 {
  font-size: 1.05rem;
  color: var(--text-heading);
  font-weight: 700;
}
.tile p {
  font-size: .82rem;
  color: var(--text-muted);
  line-height: 1.5;
}
/* Lange Begriffe (z.B. "Konfigurationsvorlagen") umbrechen statt Grid zu sprengen */
.tile h2, .tile p { overflow-wrap: break-word; word-break: break-word; }

/* ============================================================
   TOPIC-SEITE – LAYOUT
   ============================================================ */
.page-wrap {
  display: flex;
  padding-top: var(--topbar-h);
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 28px 0;
  position: fixed;
  top: var(--topbar-h);
  bottom: 0;
  overflow-y: auto;
}
.sidebar-heading {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0 20px 10px;
}
.sidebar-nav { list-style: none; }
.sidebar-nav li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  font-size: .88rem;
  color: var(--text-muted);
  border-left: 3px solid transparent;
  transition: color .15s, background .15s, border-color .15s;
}
.sidebar-nav li a:hover,
.sidebar-nav li a.active {
  color: var(--text-heading);
  background: rgba(79,156,249,.08);
  border-left-color: var(--accent);
  text-decoration: none;
}
.sidebar-nav li a .nav-icon { font-size: 1rem; min-width: 20px; text-align: center; }
.sidebar-divider {
  height: 1px;
  background: var(--border);
  margin: 14px 20px;
}

/* ---- Content-Bereich ---- */
.content-area {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 40px 48px;
  max-width: 960px;
}

/* ---- Artikel ---- */
.article-header { margin-bottom: 32px; }
.article-header .tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: .75rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.article-header h1 {
  font-size: 1.9rem;
  color: var(--text-heading);
  line-height: 1.25;
  margin-bottom: 10px;
}
.article-meta {
  font-size: .8rem;
  color: var(--text-muted);
  display: flex;
  gap: 18px;
}
.article-divider {
  height: 1px;
  background: var(--border);
  margin: 28px 0;
}

.article-body h2 {
  font-size: 1.25rem;
  color: var(--text-heading);
  margin: 36px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.article-body h3 {
  font-size: 1rem;
  color: var(--accent);
  margin: 24px 0 8px;
}
.article-body p {
  line-height: 1.75;
  color: var(--text-main);
  margin-bottom: 14px;
}
.article-body ul, .article-body ol {
  padding-left: 22px;
  margin-bottom: 14px;
}
.article-body li {
  line-height: 1.7;
  margin-bottom: 4px;
}
.article-body strong { color: var(--text-heading); }

/* Bild-Block */
.img-block {
  margin: 28px 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.img-block img {
  max-height: 420px;
  object-fit: contain;
}
.img-block figcaption {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: 10px;
}

/* Code-Block */
.code-block {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  overflow-x: auto;
  margin: 14px 0 20px;
}
.code-block code {
  font-family: 'Cascadia Code', 'Consolas', monospace;
  font-size: .88rem;
  color: #a8d8a8;
  white-space: pre;
}

/* Kopier-Button an Code-Blöcken (per mobile.js injiziert) */
.code-wrap { position: relative; }
.code-block.has-copy { padding-top: 34px; }
.code-copy-btn {
  position: absolute;
  top: 7px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 9px;
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-family: inherit;
  font-size: .72rem;
  cursor: pointer;
  opacity: .55;
  transition: opacity .15s, color .15s, border-color .15s, background .15s;
}
.code-wrap:hover .code-copy-btn { opacity: 1; }
.code-copy-btn:hover { color: var(--text-heading); border-color: var(--accent); background: rgba(79,156,249,.1); }
.code-copy-btn.copied { color: #22c55e; border-color: #22c55e; opacity: 1; }
.code-copy-btn svg { flex-shrink: 0; }
@media (max-width: 640px) { .code-copy-btn span { display: none; } .code-copy-btn { padding: 5px 7px; } }

/* Info-Box */
.info-box {
  border-left: 4px solid var(--accent);
  background: rgba(79,156,249,.07);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 18px;
  margin: 20px 0;
  font-size: .9rem;
  color: var(--text-main);
}
.info-box strong { color: var(--accent); }

/* OSI-Tabelle */
.osi-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: .88rem;
}
.osi-table th {
  background: var(--bg-sidebar);
  color: var(--text-heading);
  font-weight: 700;
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--border);
}
.osi-table td {
  padding: 9px 14px;
  border: 1px solid var(--border);
  color: var(--text-main);
  vertical-align: top;
}
.osi-table tr:nth-child(even) td { background: rgba(255,255,255,.025); }
.layer-badge {
  display: inline-block;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: .8rem;
  line-height: 28px;
  text-align: center;
}

/* Platzhalter-Bild (SVG inline) */
.placeholder-img {
  width: 100%;
  border-radius: var(--radius);
}

/* ============================================================
   PLATZHALTER-SEITEN (Windows, Linux, etc.)
   ============================================================ */
.placeholder-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  color: var(--text-muted);
  gap: 16px;
}
.placeholder-content .ph-icon { font-size: 4rem; opacity: .35; }
.placeholder-content h2 { color: var(--text-heading); font-size: 1.4rem; }
.placeholder-content p { max-width: 420px; font-size: .9rem; line-height: 1.6; }

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================================
   SUCHE
   ============================================================ */

#sh-topbar-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  padding: 5px 12px;
  font-size: .8rem;
  font-family: inherit;
  cursor: pointer;
  transition: border-color .15s, color .15s, background .15s;
  white-space: nowrap;
}
#sh-topbar-btn:hover {
  border-color: var(--accent);
  color: var(--text-heading);
  background: rgba(79, 156, 249, .08);
}
#sh-topbar-btn kbd {
  font-family: inherit;
  font-size: .7rem;
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--text-muted);
  pointer-events: none;
}

/* Overlay */
#sh-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
}
#sh-modal.sh-open { display: block; }

#sh-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

#sh-container {
  position: absolute;
  top: 12vh;
  left: 50%;
  transform: translateX(-50%);
  width: min(660px, 92vw);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, .55);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: sh-in .15s ease;
}
@keyframes sh-in {
  from { opacity: 0; transform: translateX(-50%) translateY(-8px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Eingabezeile */
#sh-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}
#sh-search-icon { flex-shrink: 0; }
#sh-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-heading);
  font-size: 1rem;
  font-family: inherit;
}
#sh-input::placeholder { color: var(--text-muted); }
#sh-esc-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
#sh-esc-btn kbd {
  font-family: inherit;
  font-size: .72rem;
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 7px;
  color: var(--text-muted);
  transition: border-color .1s;
}
#sh-esc-btn:hover kbd {
  border-color: var(--accent);
  color: var(--text-main);
}

/* Ergebnisliste */
#sh-results-wrap {
  overflow-y: auto;
  max-height: 430px;
}
#sh-results { padding: 6px 0; }

.sh-hint {
  padding: 28px 20px;
  text-align: center;
  font-size: .88rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.sh-hint-icon { font-size: 1.8rem; opacity: .5; }
.sh-hint strong { color: var(--text-main); }

.sh-empty {
  padding: 28px 20px;
  text-align: center;
  font-size: .88rem;
  color: var(--text-muted);
}
.sh-empty strong { color: var(--text-main); }

.sh-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 18px;
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: background .1s;
}
.sh-item:hover,
.sh-item.sh-active {
  background: rgba(79, 156, 249, .08);
  border-left-color: var(--accent);
}
.sh-item-icon {
  font-size: 1.2rem;
  width: 28px;
  text-align: center;
  flex-shrink: 0;
}
.sh-item-body { flex: 1; min-width: 0; }
.sh-item-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 3px;
}
.sh-item-sub {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
}
.sh-item-tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 4px;
  padding: 1px 8px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}
.sh-item-desc {
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sh-arr {
  color: var(--text-muted);
  flex-shrink: 0;
  opacity: .4;
  transition: opacity .1s, color .1s;
}
.sh-item.sh-active .sh-arr {
  opacity: 1;
  color: var(--accent);
}

/* Treffer-Hervorhebung */
#sh-results mark {
  background: rgba(79, 156, 249, .2);
  color: var(--accent);
  border-radius: 2px;
  padding: 0 1px;
}

/* Fußzeile */
#sh-footer {
  display: flex;
  gap: 16px;
  padding: 9px 18px;
  border-top: 1px solid var(--border);
  background: var(--bg-sidebar);
  font-size: .73rem;
  color: var(--text-muted);
}
#sh-footer kbd {
  font-family: inherit;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  font-size: .7rem;
}

/* ---- Versions-Footer ---- */
.page-version-footer {
  margin-top: 72px;
  padding: 18px 0 12px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: .75rem;
  color: var(--text-muted);
  letter-spacing: .05em;
}
.page-version-footer .version-badge {
  display: inline-block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3px 14px;
  font-size: .72rem;
  color: var(--accent);
  letter-spacing: .06em;
  margin-right: 10px;
}

/* Feedback / Fehler-melden im Footer (per mobile.js injiziert) */
#footer-feedback {
  margin-top: 10px;
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}
#footer-feedback a { color: var(--text-muted); font-size: .75rem; }
#footer-feedback a:hover { color: var(--accent); text-decoration: none; }
#footer-feedback .ff-sep { color: var(--border); }

/* ============================================================
   MOBILE-NAVIGATION (Hamburger + Off-Canvas) – per JS injiziert
   ============================================================ */
#mobile-nav-toggle {
  display: none;            /* nur auf Mobile sichtbar (Media-Query) */
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 6px;
  margin: 0 2px 0 -4px;
  border-radius: 8px;
  flex-shrink: 0;
}
#mobile-nav-toggle:hover { background: rgba(255,255,255,.07); color: var(--text-heading); }
#mobile-nav-backdrop {
  display: none;
  position: fixed;
  top: var(--topbar-h);
  left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,.5);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  z-index: 150;
}

/* Tabellen-Scroll-Wrapper (per JS um Tabellen gelegt) */
.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 20px 0;
}
.table-scroll .osi-table { margin: 0; }

/* ============================================================
   RESPONSIVE – Tablet & Smartphone
   ============================================================ */
@media (max-width: 820px) {
  /* ---- Off-Canvas-Sidebar (Content-Seiten) ---- */
  .sidebar {
    width: min(284px, 82vw);
    min-width: 0;
    transform: translateX(-100%);
    transition: transform .28s ease;
    z-index: 200;
    box-shadow: var(--shadow);
  }
  body.nav-open .sidebar { transform: translateX(0); }
  body.nav-open #mobile-nav-backdrop { display: block; }
  #mobile-nav-toggle { display: flex; }

  .content-area {
    margin-left: 0;
    max-width: 100%;
    padding: 24px 18px 40px;
  }

  /* ---- Topbar kompakter ---- */
  .topbar { padding: 0 12px; gap: 10px; }
  .topbar .breadcrumb { display: none; }
  .topbar .logo { font-size: 1.02rem; }
  #sh-topbar-btn span, #sh-topbar-btn kbd { display: none; }
  #sh-topbar-btn { padding: 6px 9px; }
  .topbar-home-btn { padding: 5px 11px; font-size: .76rem; }

  /* ---- Index / Hero ---- */
  .hero { padding: 40px 18px 30px; }
  .hero h1 { font-size: 1.85rem; }
  .hero p { font-size: .95rem; }
  .tile-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 14px;
    padding: 0 18px 48px;
  }
  .tile { padding: 24px 16px 22px; }

  /* ---- Artikel ---- */
  .article-header h1 { font-size: 1.5rem; }
  .article-meta { flex-wrap: wrap; gap: 8px 16px; }
  .article-body h2 { font-size: 1.14rem; }
  .img-block img { max-height: 320px; }

  /* ---- Tabellen: nicht zu schmal quetschen, stattdessen scrollen ---- */
  .table-scroll {
    border: 1px solid var(--border);
    border-radius: var(--radius);
  }
  .table-scroll .osi-table { min-width: 480px; border: none; font-size: .84rem; }

  /* ---- Such-Modal-Fußzeile umbrechen ---- */
  #sh-footer { flex-wrap: wrap; gap: 8px 14px; }
}

@media (max-width: 480px) {
  .content-area { padding: 20px 14px 36px; }
  .hero { padding: 32px 14px 24px; }
  .hero h1 { font-size: 1.55rem; }
  .hero p { font-size: .9rem; }
  .tile-grid { grid-template-columns: 1fr; gap: 12px; }
  .article-header h1 { font-size: 1.32rem; }
  .article-body h2 { font-size: 1.06rem; }
  .article-body p, .article-body li { line-height: 1.65; }
  .code-block { padding: 12px 14px; }
  .code-block code { font-size: .8rem; }
  .topbar .logo { font-size: .96rem; }
  .topbar-home-btn { padding: 5px 9px; font-size: .72rem; }
}