/* ============================================================
   proxmox.learn — Editorial Parchment Theme
   Light (Default): warm paper, sepia lines, terracotta accent
   Dark  (Night):   warm dark, ink soft cream, terracotta accent
   Typography: Fraunces (serif headlines) + Inter (sans body) + JetBrains Mono (code)
   ============================================================ */

:root,
:root[data-theme="light"] {
  /* paper */
  --paper:        #f5f4ed;
  --paper-2:      #efece1;
  --surface:      #faf8f1;
  --surface-2:    #efece1;
  --surface-3:    #e8e3d3;
  /* ink */
  --ink:          #25221b;
  --ink-soft:     #4d4738;
  --ink-mute:     #8a826f;
  /* lines */
  --line:         #e0d9c8;
  --line-strong:  #cdc4ac;
  /* accent */
  --accent:       #b4502e;
  --accent-soft:  #c97149;
  --accent-tint:  rgba(180, 80, 46, 0.10);
  /* status */
  --green:        #5a8a3f;
  --cyan:         #2f6f8f;
  --amber:        #b07a1a;
  --red:          #a04545;
  --green-tint:   rgba(90, 138, 63, 0.10);
  --red-tint:     rgba(160, 69, 69, 0.10);
  --amber-tint:   rgba(176, 122, 26, 0.10);
  /* fonts */
  --serif: 'Fraunces', Georgia, serif;
  --sans:  'Inter', system-ui, -apple-system, sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
  /* shadows (sepia) */
  --shadow-md: 0 1px 2px rgba(74, 60, 35, 0.06), 0 12px 32px -16px rgba(74, 60, 35, 0.12);
  --shadow-lg: 0 1px 2px rgba(74, 60, 35, 0.08), 0 24px 48px -16px rgba(74, 60, 35, 0.16);
  /* radii */
  --radius-sm: 6px;
  --radius:    12px;
  --radius-lg: 18px;
  --maxw: 78rem;
}

:root[data-theme="dark"] {
  /* paper */
  --paper:        #161412;
  --paper-2:      #1c1a17;
  --surface:      #1f1d1a;
  --surface-2:    #26221e;
  --surface-3:    #100f0d;
  /* ink */
  --ink:          #ede5d3;
  --ink-soft:     #c2b89f;
  --ink-mute:     #8a8170;
  /* lines */
  --line:         #2e2924;
  --line-strong:  #423c33;
  /* accent */
  --accent:       #d97849;
  --accent-soft:  #e58d63;
  --accent-tint:  rgba(217, 120, 73, 0.14);
  /* status */
  --green:        #7fb866;
  --cyan:         #6cb4d6;
  --amber:        #d8a851;
  --red:          #d97878;
  --green-tint:   rgba(127, 184, 102, 0.12);
  --red-tint:     rgba(217, 120, 120, 0.12);
  --amber-tint:   rgba(216, 168, 81, 0.12);
  /* shadows (warm dark) */
  --shadow-md: 0 1px 2px rgba(0, 0, 0, 0.5), 0 12px 32px -16px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 1px 2px rgba(0, 0, 0, 0.6), 0 24px 48px -16px rgba(0, 0, 0, 0.8);
}

/* ============================================================
   Base
   ============================================================ */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

/* Globale Focus-Rings — sichtbar auf Parchment + Dark */
*:focus { outline: none; }
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
.skip:focus-visible { outline-offset: 0; border-radius: var(--radius-sm); }

body {
  margin: 0;
  font: 16px/1.65 var(--sans);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .35s ease, color .35s ease;
}

/* Topo canvas (background, fixed) */
#topo-bg {
  position: fixed; inset: 0; z-index: 0;
  width: 100vw; height: 100vh;
  pointer-events: none;
  opacity: 0.42;
}
:root[data-theme="dark"] #topo-bg { opacity: 0.22; }

a { color: inherit; }
code {
  font-family: var(--mono); font-size: 0.85em;
  padding: 0.1em 0.4em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--accent);
}
.link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color .15s;
}
.link:hover { border-color: var(--accent); }

.skip {
  position: absolute; top: -100px; left: 1rem;
  background: var(--ink); color: var(--paper);
  padding: 0.5rem 0.85rem; border-radius: var(--radius-sm);
  text-decoration: none; z-index: 999;
  font-family: var(--sans); font-weight: 500;
}
.skip:focus { top: 1rem; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }
main, header, footer { position: relative; z-index: 1; }

/* ============================================================
   Topbar
   ============================================================ */

.topbar {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  background: color-mix(in oklab, var(--paper) 80%, transparent);
  border-bottom: 1px solid var(--line);
}
.topbar-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; padding: 0.9rem 1.5rem;
}
.brand {
  display: inline-flex; align-items: center; gap: 0.55rem;
  text-decoration: none; font-weight: 500; letter-spacing: -0.01em;
  font-size: 1.05rem; color: var(--ink);
  font-family: var(--serif);
  font-variation-settings: "SOFT" 30, "opsz" 144;
}
.brand-logo {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--ink); color: var(--paper);
  display: grid; place-items: center;
  box-shadow: var(--shadow-md);
  font-family: var(--serif); font-style: italic; font-size: 16px;
  font-variation-settings: "SOFT" 100, "opsz" 14;
}
.brand-text { font-family: var(--serif); font-weight: 500; letter-spacing: -0.01em; }
.brand-dot { color: var(--accent); }

.nav { display: flex; gap: 1.4rem; font-size: 0.92rem; font-family: var(--sans); }
.nav a {
  text-decoration: none; color: var(--ink-soft);
  padding: 0.35rem 0;
  transition: color .15s;
  position: relative;
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--accent);
}

.topbar-actions { display: flex; gap: 0.5rem; align-items: center; }

/* Mobile nav toggle (Hamburger) — desktop versteckt */
.nav-toggle {
  display: none;
  width: 38px; height: 38px;
  background: transparent; color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: 10px;
  cursor: pointer; padding: 0;
  transition: background .15s, color .15s, border-color .15s;
}
.nav-toggle:hover { border-color: var(--line-strong); color: var(--ink); }
.nav-toggle-bars { display: inline-flex; flex-direction: column; gap: 4px; }
.nav-toggle-bars span {
  display: block; width: 18px; height: 1.6px;
  background: currentColor; border-radius: 1px;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) {
  transform: translateY(5.6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3) {
  transform: translateY(-5.6px) rotate(-45deg);
}

/* Theme toggle button */
.theme-toggle {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  background: transparent; color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: 10px;
  cursor: pointer; padding: 0;
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.theme-toggle:hover { border-color: var(--line-strong); color: var(--ink); }
.theme-toggle:active { transform: scale(0.95); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.7rem 1.1rem; border-radius: 10px;
  font-size: 0.93rem; font-weight: 500;
  text-decoration: none; border: 1px solid transparent;
  transition: transform .12s ease, background .15s, color .15s, border-color .15s, box-shadow .15s;
  cursor: pointer; font-family: var(--sans);
}
.btn-sm { padding: 0.45rem 0.85rem; font-size: 0.85rem; border-radius: 8px; }
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { background: var(--accent-soft); transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--ink-mute); background: var(--surface); }

@media (max-width: 860px) {
  .nav-toggle { display: grid; place-items: center; }
  .nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 0.4rem 1.5rem 1rem;
    box-shadow: var(--shadow-md);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a {
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
  }
  .nav a:last-child { border-bottom: none; }
  .nav a:hover::after { display: none; }
  .topbar-row { position: relative; }
}

/* ============================================================
   Hero
   ============================================================ */

.hero { padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(2.5rem, 5vw, 4rem); }
.hero-inner { max-width: 56rem; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.45rem;
  padding: 0.4rem 0.85rem; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--line);
  font-size: 0.78rem; font-weight: 500; color: var(--ink-soft);
  margin: 0 0 1.25rem; font-family: var(--mono);
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 3px var(--accent-tint);
}

.hero-title {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 30, "opsz" 144;
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 1.05; letter-spacing: -0.025em;
  margin: 0 0 1.25rem; font-weight: 500; color: var(--ink);
}
.hero-title em {
  font-style: italic; color: var(--accent);
  font-variation-settings: "SOFT" 100, "opsz" 14;
}

.hero-lead {
  font-size: clamp(1.02rem, 1.4vw, 1.15rem);
  color: var(--ink-soft);
  max-width: 42rem; margin: 0 0 1.75rem;
  line-height: 1.65;
}
.hero-lead strong { color: var(--ink); font-weight: 600; }

.hero-cta {
  display: flex; gap: 0.7rem; flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 0.8rem; max-width: 50rem;
}
.stat-tile {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
}
.stat-big {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 30, "opsz" 144;
  font-size: 1.6rem; font-weight: 500;
  color: var(--ink); letter-spacing: -0.02em;
}
.stat-small {
  font-size: 0.78rem; color: var(--ink-mute);
  margin-top: 0.15rem; font-family: var(--mono);
}

/* ============================================================
   Bento Hero — 5 Preview-Kacheln
   ============================================================ */

.bento-wrap { margin-top: 2.5rem; max-width: var(--maxw); }

.bento-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: minmax(180px, auto);
  gap: 1rem;
}

.bento {
  position: relative;
  display: flex; flex-direction: column;
  grid-column: span 2;
  min-height: 200px;
  padding: 1.5rem 1.6rem 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  text-decoration: none; color: inherit;
  overflow: hidden;
  transition: transform .2s ease, border-color .2s, box-shadow .2s, background .2s;
}
.bento:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  background: var(--paper-2);
}
.bento:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.bento-wide   { grid-column: span 4; }
.bento-tall   { grid-column: span 2; grid-row: span 2; min-height: 380px; }
.bento-accent {
  background: linear-gradient(135deg, var(--accent-tint) 0%, var(--paper-2) 60%);
  border-color: color-mix(in oklab, var(--accent) 35%, var(--line));
}
.bento-accent:hover { border-color: var(--accent); }

.bento-num {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 100, "opsz" 144;
  font-size: 1rem;
  color: var(--accent);
  font-style: italic;
  font-weight: 500;
  letter-spacing: -0.01em;
  display: block;
  margin-bottom: 0.5rem;
}
.bento-body { flex: 1; display: flex; flex-direction: column; }
.bento-title {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 30, "opsz" 144;
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: -0.018em;
  margin: 0 0 0.5rem;
  line-height: 1.2;
  color: var(--ink);
}
.bento-text {
  margin: 0 0 1rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.55;
  max-width: 36ch;
}
.bento-cta {
  display: inline-flex; align-items: center; gap: 0.4rem;
  margin-top: auto;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  font-family: var(--sans);
}
.bento-cta svg { transition: transform .2s ease; }
.bento:hover .bento-cta svg { transform: translateX(3px); }

/* Bento-Art (Mini-Illustrationen rechts unten in der Kachel) */
.bento-art {
  position: absolute;
  right: 1.4rem; bottom: 1.2rem;
  width: 110px; height: 70px;
  display: grid; align-content: end; justify-items: end;
  pointer-events: none;
  color: var(--ink-mute);
  opacity: 0.85;
}
.bento-tall .bento-art { width: 140px; height: 140px; right: 1.6rem; bottom: 1.6rem; }
.bento-wide .bento-art { width: 220px; height: 100px; right: 1.6rem; bottom: 1.2rem; }

/* Art: Module (Liste mit Markern) */
.bento-art-modules { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 4px 10px; align-content: end; }
.bento-art-modules .art-line { display: block; height: 6px; background: var(--line); border-radius: 2px; width: 100%; }
.bento-art-modules .art-dot {
  display: block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); position: absolute; right: 1.4rem; bottom: 1.2rem;
}
.bento-art-modules .art-dot:nth-child(5) { right: 1.6rem; bottom: 1.4rem; }
.bento-art-modules .art-dot:nth-child(6) { right: 1.8rem; bottom: 1.4rem; }
.bento-art-modules .art-dot:nth-child(7) { right: 1.7rem; bottom: 1.7rem; }

/* Art: Terminal-Mock */
.bento-art-terminal {
  display: grid; grid-template-rows: auto auto auto auto; gap: 3px;
  align-items: center; justify-items: start;
  font-family: var(--mono); font-size: 0.65rem;
  color: var(--ink-soft);
  background: var(--surface-3);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  width: 140px; height: 70px;
  right: 1.4rem; bottom: 1.2rem;
}
.bento-art-terminal .art-prompt { color: var(--green); }
.bento-art-terminal .art-cmd    { color: var(--ink); }
.bento-art-terminal .art-out    { color: var(--accent); }
.bento-art-terminal .art-cursor {
  display: inline-block; width: 6px; height: 10px;
  background: var(--accent); margin-top: 1px;
  animation: blink 1.05s steps(2, end) infinite;
}

/* Art: Cluster-SVG */
.bento-art-cluster svg { width: 100%; height: 100%; color: var(--accent); }
.bento-art-cluster svg circle:last-child { fill: var(--accent); fill-opacity: 0.18; stroke: var(--accent); }

/* Art: Quiz-Fragezeichen + Counter */
.bento-art-quiz {
  display: flex; align-items: baseline; justify-content: flex-end; gap: 0.3rem;
  font-family: var(--serif);
  font-variation-settings: "SOFT" 100, "opsz" 144;
  color: var(--accent);
}
.bento-art-quiz .art-q {
  font-size: 4rem; line-height: 1; font-style: italic; font-weight: 500;
  color: var(--ink); opacity: 0.3;
}
.bento-art-quiz .art-count {
  font-size: 3.5rem; line-height: 1; font-style: italic; font-weight: 500;
  color: var(--accent);
}

/* Art: Restore-Schritte */
.bento-art-restore {
  display: flex; flex-direction: column; gap: 6px;
  width: 120px;
}
.bento-art-restore .art-step {
  display: block; height: 8px; background: var(--line);
  border-radius: 4px; position: relative;
}
.bento-art-restore .art-step-done { background: var(--green); }
.bento-art-restore .art-step-done::after {
  content: ''; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  width: 5px; height: 5px; border-radius: 50%; background: #fff;
}

/* Bento Responsive */
@media (max-width: 1100px) {
  .bento-grid { grid-template-columns: repeat(4, 1fr); }
  .bento       { grid-column: span 2; }
  .bento-wide  { grid-column: span 4; }
  .bento-tall  { grid-row: span 1; min-height: 220px; }
}
@media (max-width: 720px) {
  .bento-grid { grid-template-columns: 1fr; }
  .bento, .bento-wide, .bento-tall {
    grid-column: span 1; min-height: 180px; grid-row: auto;
  }
  .bento-art { width: 80px; height: 50px; }
  .bento-art-terminal { width: 110px; height: 60px; }
}

/* ============================================================
   Sticky Inhaltsverzeichnis (TOC)
   ============================================================ */

.toc {
  display: none;
  position: fixed;
  top: 5rem; left: 1rem;
  z-index: 30;
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
  pointer-events: auto;
}
.toc-inner {
  padding: 0.75rem 0;
}
.toc-label {
  margin: 0 0 0.6rem;
  padding: 0 0.6rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.toc-list {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column;
  border-left: 1px solid var(--line);
}
.toc-list a {
  display: flex; align-items: baseline; gap: 0.5rem;
  padding: 0.4rem 0.7rem;
  text-decoration: none; color: var(--ink-mute);
  font-size: 0.85rem;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: color .15s, border-color .15s;
}
.toc-list a:hover { color: var(--ink); }
.toc-list a.is-active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 500;
}
.toc-num {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-mute);
  min-width: 1.5rem;
}
.toc-list a.is-active .toc-num { color: var(--accent); }
.toc-title { font-family: var(--sans); }

@media (min-width: 1280px) {
  .toc { display: block; }
}
@media (max-width: 1279px) {
  .toc { display: none; }
}

/* ============================================================
   Sections
   ============================================================ */

section {
  padding: clamp(2.5rem, 6vw, 5rem) 0;
  border-top: 1px solid var(--line);
}
section.hero { border-top: none; }

.section-head {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 0.5rem 1.5rem;
  align-items: baseline;
  margin-bottom: 2.5rem;
  max-width: 44rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}
.section-num {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 100, "opsz" 144;
  font-size: 1.6rem;
  color: var(--accent);
  letter-spacing: -0.02em;
  font-style: italic;
  font-weight: 500;
  grid-row: span 2;
  align-self: center;
}
.section-head h2 {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 30, "opsz" 144;
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  letter-spacing: -0.025em; margin: 0; line-height: 1.1;
  font-weight: 500;
}
.section-sub {
  margin: 0; color: var(--ink-mute);
  font-size: 1rem; line-height: 1.6;
}

@media (max-width: 600px) {
  .section-head {
    grid-template-columns: 1fr;
    gap: 0.4rem;
    padding-bottom: 1rem;
  }
  .section-num { grid-row: auto; font-size: 1.3rem; }
}

/* ============================================================
   Modules
   ============================================================ */

.module-list {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 1rem;
}
.module-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.7rem;
  display: grid; grid-template-columns: 4rem 1fr; gap: 1.5rem;
  transition: transform .15s, border-color .15s, box-shadow .15s, background .15s;
}
.module-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}
.module-num {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 100, "opsz" 144;
  font-size: 1.8rem; color: var(--accent); font-weight: 500;
  letter-spacing: -0.02em; padding-top: 0.1rem;
}
.module-body { min-width: 0; }
.module-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 1rem; flex-wrap: wrap; margin-bottom: 0.4rem;
}
.module-head h3 {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 30, "opsz" 144;
  font-size: 1.35rem; margin: 0; letter-spacing: -0.015em; font-weight: 500;
}
.module-badges { display: inline-flex; gap: 0.4rem; flex-wrap: wrap; }
.badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.25rem 0.6rem; border-radius: 999px;
  font-size: 0.72rem; font-weight: 500;
  background: var(--surface-2); color: var(--ink-mute);
  border: 1px solid var(--line);
  font-family: var(--mono); white-space: nowrap;
}
.badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-mute); }
.badge.badge-live {
  background: var(--green-tint); color: var(--green);
  border-color: color-mix(in oklab, var(--green) 35%, var(--line));
}
.badge.badge-live .dot { background: var(--green); box-shadow: 0 0 6px var(--green); }
.badge.badge-leicht {
  color: var(--green);
  background: var(--green-tint);
  border-color: color-mix(in oklab, var(--green) 35%, var(--line));
}
.badge.badge-mittel {
  color: var(--amber);
  background: var(--amber-tint);
  border-color: color-mix(in oklab, var(--amber) 35%, var(--line));
}
.badge.badge-hart {
  color: var(--red);
  background: var(--red-tint);
  border-color: color-mix(in oklab, var(--red) 35%, var(--line));
}

.module-summary {
  margin: 0 0 0.8rem; color: var(--ink-soft);
  font-size: 0.95rem; line-height: 1.6;
}
.module-meta {
  display: flex; gap: 1.5rem;
  font-size: 0.82rem; color: var(--ink-mute);
  font-family: var(--mono); margin-bottom: 0.9rem;
  flex-wrap: wrap;
}
.meta-k { color: var(--ink-mute); margin-right: 0.3rem; }
.module-tasks {
  margin: 0 0 1rem; padding-left: 0;
  list-style: none;
  color: var(--ink-soft); font-size: 0.93rem;
  counter-reset: task;
}
.module-tasks li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 0.4rem;
  counter-increment: task;
  line-height: 1.55;
}
.module-tasks li::before {
  content: counter(task, decimal-leading-zero);
  position: absolute; left: 0; top: 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  font-weight: 500;
  padding-top: 0.2rem;
}
.module-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.module-feedback {
  margin-top: 0.85rem; padding: 0.7rem 0.9rem;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  font-size: 0.9rem; color: var(--ink-soft);
}

@media (max-width: 600px) {
  .module-card { grid-template-columns: 1fr; gap: 0.5rem; }
  .module-num { font-size: 1.3rem; }
}

/* ============================================================
   Topologie + Panels
   ============================================================ */

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem; margin-bottom: 1rem;
}
.panel-head {
  font-family: var(--mono); font-size: 0.78rem;
  color: var(--ink-mute); letter-spacing: 0.04em;
  margin-bottom: 0.85rem; text-transform: uppercase;
}
.topo-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 1rem;
}
@media (max-width: 900px) { .topo-grid { grid-template-columns: 1fr; } }

.topo-canvas {
  background: var(--surface-3);
  border-radius: var(--radius-sm);
  padding: 0.4rem;
}
.topo-canvas svg { width: 100%; height: auto; display: block; }

/* Topo SVG element colors (JS renders inline) */
.topo-canvas .node-circle { fill: var(--surface-2); stroke: var(--accent); stroke-width: 1.4; }
.topo-canvas .node-label  { fill: var(--ink); font-family: var(--mono); font-size: 10px; }
.topo-canvas .bridge-line { stroke: var(--line-strong); stroke-width: 1; }
.topo-canvas .link        { stroke: var(--ink-mute); stroke-width: 0.8; }

.snap-tree {
  font-family: var(--mono); font-size: 0.85rem; color: var(--ink-soft);
}
.snap-vm {
  display: flex; gap: 0.6rem; align-items: baseline;
  padding: 0.3rem 0; border-bottom: 1px dashed var(--line);
}
.snap-vm:last-of-type { border-bottom: none; }
.snap-name { color: var(--ink); font-weight: 500; }
.snap-meta { color: var(--ink-mute); font-size: 0.78rem; margin-left: auto; }
.snap-line { padding: 0.18rem 0 0.18rem 1.2rem; display: flex; gap: 0.6rem; align-items: baseline; }
.snap-label { color: var(--ink); }
.snap-date { color: var(--ink-mute); font-size: 0.78rem; margin-left: auto; }
.snap-empty { color: var(--ink-mute); font-size: 0.85rem; padding: 0.2rem 0; }

.bk-list { font-family: var(--mono); font-size: 0.78rem; }
.bk-row {
  display: grid;
  grid-template-columns: 2.4fr 0.6fr 0.5fr 0.7fr 1.4fr 0.8fr;
  gap: 0.5rem; padding: 0.35rem 0;
  border-bottom: 1px dashed var(--line); align-items: baseline;
}
.bk-head {
  color: var(--ink-mute); font-weight: 600;
  border-bottom: 1px solid var(--line-strong);
}
.bk-row span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ============================================================
   Terminal (always dark, contrast surface inside parchment page)
   ============================================================ */

.terminal-section { background: var(--paper-2); }
.terminal-wrap {
  background: #14110d;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.terminal { display: flex; flex-direction: column; }
.terminal-bar {
  display: flex; align-items: center; gap: 0.65rem;
  padding: 0.7rem 1rem;
  background: #0d0b08;
  border-bottom: 1px solid #2a2520;
}
.dots { display: inline-flex; gap: 5px; }
.dots span { width: 11px; height: 11px; border-radius: 50%; background: #2a2520; }
.dots span:nth-child(1) { background: #d97878; }
.dots span:nth-child(2) { background: #d8a851; }
.dots span:nth-child(3) { background: #7fb866; }
.terminal-title {
  font-family: var(--mono); font-size: 0.78rem;
  color: #8a8170; margin-left: 0.5rem; flex: 1; text-align: center;
}
.terminal-actions { display: inline-flex; gap: 0.35rem; }
.tbtn {
  font-family: var(--mono); font-size: 0.72rem;
  background: transparent; color: #c2b89f;
  border: 1px solid #2a2520;
  padding: 0.25rem 0.55rem; border-radius: 6px; cursor: pointer;
}
.tbtn:hover { color: #ede5d3; border-color: #423c33; }

.terminal-body {
  padding: 1rem 1.1rem 1.2rem;
  font-family: var(--mono); font-size: 0.86rem;
  line-height: 1.55; color: #c2b89f;
  min-height: 24rem; max-height: 32rem;
  overflow-y: auto; cursor: text; position: relative;
}
.t-row { white-space: pre-wrap; word-break: break-word; margin-bottom: 0.15rem; }
.t-row-cmd { color: #ede5d3; margin-top: 0.4rem; }
.t-row-meta { color: #8a8170; font-style: italic; }
.t-live-stop {
  background: rgba(216, 168, 81, 0.10);
  padding: 0.35rem 0.6rem; border-radius: var(--radius-sm);
  margin: 0.3rem 0;
}
.t-prompt-static { color: #7fb866; margin-right: 0.5rem; }
.t-cmd { color: #ede5d3; }
.c-cyan { color: #6cb4d6; }
.c-green { color: #7fb866; }
.c-amber { color: #d8a851; }
.c-red { color: #d97878; }
.c-bold { font-weight: 600; }

.t-prompt-row { display: flex; align-items: center; gap: 0.5rem; padding-top: 0.4rem; }
.t-prompt { color: #7fb866; font-family: var(--mono); font-size: 0.86rem; }
.t-input {
  flex: 1; background: transparent; border: none; outline: none;
  color: #ede5d3; font-family: var(--mono); font-size: 0.86rem;
  caret-color: #d97849; padding: 0.2rem 0;
}
.t-input::selection { background: rgba(217, 120, 73, 0.30); }
/* Subtle pulse on the prompt row to feel alive */
.t-prompt-row::before {
  content: '';
  display: inline-block; width: 6px; height: 14px;
  background: #d97849; margin-right: 0.5rem;
  border-radius: 1px; vertical-align: -2px;
  animation: blink 1.05s steps(2, end) infinite;
  opacity: 0.85;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  .t-prompt-row::before { animation: none; }
}

.t-search {
  position: sticky; bottom: 0; left: 0; right: 0;
  background: rgba(20, 17, 13, 0.96);
  border-top: 1px solid #d97849;
  padding: 0.5rem 0.7rem;
  font-family: var(--mono); font-size: 0.8rem; color: #ede5d3;
  min-height: 1.5rem;
}

/* ============================================================
   Restore
   ============================================================ */

.restore-steps {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 0.7rem;
}
.restore-steps li {
  display: grid; grid-template-columns: 2.4rem 1fr;
  gap: 1rem; align-items: start;
  padding: 1rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .15s, background .15s;
}
.restore-steps li.done {
  border-color: color-mix(in oklab, var(--green) 40%, var(--line));
  background: var(--green-tint);
}
.restore-steps li.active { border-color: var(--accent); }
.rs-num {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 100, "opsz" 144;
  font-size: 1.4rem; color: var(--accent); font-weight: 500;
  padding-top: 0.2rem;
}
.restore-steps li.done .rs-num { color: var(--green); }
.rs-body { display: grid; gap: 0.4rem; }
.rs-label { font-weight: 500; color: var(--ink); }
.rs-cmd {
  background: var(--surface-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.75rem;
  font-family: var(--mono); font-size: 0.82rem;
  color: var(--ink-soft); display: block;
  word-break: break-all;
}
.restore-steps li.done .rs-cmd { color: var(--green); }

/* ============================================================
   Quiz
   ============================================================ */

.quiz-wrap { display: grid; gap: 1rem; }
.quiz-filter {
  display: flex; gap: 0.4rem; flex-wrap: wrap;
  align-items: center; margin-bottom: 0.5rem;
}
.qfbtn {
  padding: 0.45rem 0.9rem; border-radius: 999px;
  background: var(--surface); color: var(--ink-mute);
  border: 1px solid var(--line);
  font-family: var(--mono); font-size: 0.78rem;
  cursor: pointer; transition: background .15s, color .15s, border-color .15s;
}
.qfbtn:hover { color: var(--ink); border-color: var(--line-strong); }
.qfbtn.is-on {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
.quiz-filter .btn { margin-left: auto; }

.quiz-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.7rem;
  transition: border-color .15s;
}
.quiz-card[data-answered] { border-color: var(--line-strong); }
.quiz-head {
  display: flex; gap: 0.5rem; align-items: center;
  margin-bottom: 0.6rem;
  font-family: var(--mono); font-size: 0.78rem;
  color: var(--ink-mute); flex-wrap: wrap;
}
.quiz-state {
  margin-left: auto; padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--line);
}
.quiz-state.is-correct {
  background: var(--green-tint); color: var(--green);
  border-color: color-mix(in oklab, var(--green) 35%, var(--line));
}
.quiz-state.is-wrong {
  background: var(--red-tint); color: var(--red);
  border-color: color-mix(in oklab, var(--red) 35%, var(--line));
}
.quiz-question {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 30, "opsz" 144;
  font-size: 1.15rem; margin: 0 0 1.1rem;
  color: var(--ink); font-weight: 500; letter-spacing: -0.01em;
  line-height: 1.4;
}
.quiz-choices { display: grid; gap: 0.5rem; }
.quiz-choice {
  display: flex; align-items: flex-start; gap: 0.75rem;
  text-align: left;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.9rem;
  color: var(--ink-soft);
  font-family: var(--sans); font-size: 0.93rem;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}
.quiz-choice:hover:not(:disabled) {
  border-color: var(--line-strong); color: var(--ink);
}
.quiz-choice .quiz-letter {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 100, "opsz" 14;
  font-size: 0.85rem;
  width: 1.85rem; height: 1.85rem; border-radius: 50%;
  background: var(--paper); color: var(--ink-mute);
  display: grid; place-items: center;
  flex-shrink: 0; font-weight: 500;
  border: 1px solid var(--line);
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.quiz-choice:hover:not(:disabled) .quiz-letter {
  color: var(--accent); border-color: var(--accent);
  transform: rotate(-4deg);
}
.quiz-choice.is-correct .quiz-letter {
  background: var(--green); color: #fff; border-color: var(--green);
}
.quiz-choice.is-wrong .quiz-letter {
  background: var(--red); color: #fff; border-color: var(--red);
}
.quiz-choice.is-correct {
  background: var(--green-tint);
  border-color: color-mix(in oklab, var(--green) 40%, var(--line));
  color: var(--ink);
}
.quiz-choice.is-wrong {
  background: var(--red-tint);
  border-color: color-mix(in oklab, var(--red) 40%, var(--line));
  color: var(--ink);
}
.quiz-choice:disabled { cursor: default; }

.quiz-text-answer { display: grid; gap: 0.6rem; }
.quiz-input {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.9rem;
  color: var(--ink);
  font-family: var(--mono); font-size: 0.92rem;
  outline: none;
  transition: border-color .15s;
}
.quiz-input:focus { border-color: var(--accent); }
.quiz-input.is-correct {
  border-color: var(--green);
  background: var(--green-tint);
}
.quiz-input.is-wrong {
  border-color: var(--red);
  background: var(--red-tint);
}
.quiz-hint {
  font-family: var(--mono); font-size: 0.78rem; color: var(--ink-mute);
}
.quiz-hint code { background: transparent; padding: 0; color: var(--cyan); }

.quiz-explain {
  margin-top: 1rem; padding: 0.85rem 1rem;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
  font-size: 0.9rem; color: var(--ink-soft);
}
.quiz-explain strong { color: var(--ink); }

/* ============================================================
   Exam mode
   ============================================================ */

.exam-bar {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.85rem 1rem;
  background: var(--surface-2);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-family: var(--mono); font-size: 0.85rem;
  flex-wrap: wrap;
}
.exam-progress { color: var(--ink-soft); }
.exam-timer {
  margin-left: auto; font-size: 1.05rem; font-weight: 600;
  color: var(--accent);
}
.exam-result {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem; text-align: center;
}
.exam-result-big {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 30, "opsz" 144;
  font-size: 3.6rem; font-weight: 500;
  color: var(--ink); margin: 0.5rem 0;
  letter-spacing: -0.03em;
}
.exam-result-verdict {
  font-size: 1.05rem; margin-bottom: 1.5rem;
  font-weight: 500;
}

/* ============================================================
   About + Footer
   ============================================================ */

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
}
.about-tile {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform .15s, border-color .15s;
}
.about-tile:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}
.about-tile h3 {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 30, "opsz" 144;
  font-size: 1.2rem; margin: 0 0 0.5rem;
  letter-spacing: -0.015em; font-weight: 500;
}
.about-tile p {
  margin: 0; color: var(--ink-soft);
  font-size: 0.93rem; line-height: 1.6;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0; margin-top: 2rem;
  font-size: 0.85rem; color: var(--ink-mute);
  background: var(--surface);
}
.footer-row {
  display: flex; justify-content: space-between;
  align-items: center; gap: 1rem; flex-wrap: wrap;
}
.footer-right { display: inline-flex; gap: 0.4rem; flex-wrap: wrap; }
.footer-pill {
  padding: 0.18rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono); font-size: 0.72rem;
}

/* ============================================================
   Reveal
   ============================================================ */

.reveal {
  opacity: 0; transform: translateY(14px);
  transition: opacity .55s ease, transform .6s cubic-bezier(.2,.7,.2,1);
}
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   Print
   ============================================================ */

@media print {
  /* Topo-Canvas, Theme-Toggle, Quiz-Filter, Buttons, Reveal-Animationen weg */
  #topo-bg,
  .topbar-actions,
  .module-actions,
  .quiz-filter,
  .module-feedback,
  .reveal {
    display: none !important;
  }
  /* Reveal-Klassen forciert sichtbar */
  .reveal { opacity: 1 !important; transform: none !important; }
  /* Parchment auf weiß, Linien dunkler für Druck */
  :root, :root[data-theme="light"], :root[data-theme="dark"] {
    --paper: #fff;
    --ink: #000;
    --ink-soft: #222;
    --ink-mute: #555;
    --line: #999;
    --line-strong: #666;
    --accent: #8a3a1a;
  }
  body { background: #fff; color: #000; }
  section { break-inside: avoid; }
  .module-card, .quiz-card, .about-tile { break-inside: avoid; box-shadow: none; }
  /* Topbar ohne sticky */
  .topbar { position: static; backdrop-filter: none; background: #fff; }
  .terminal-wrap { background: #fff; color: #000; }
  .terminal-body, .t-row, .t-cmd, .t-prompt { color: #000; }
  a { color: #000; text-decoration: underline; }
}

/* ============================================================
   Scrollbar (subtle, themed)
   ============================================================ */

* { scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 10px;
  border: 2px solid var(--paper);
}
*::-webkit-scrollbar-thumb:hover { background: var(--ink-mute); }