/* ==========================================================================
   IT-Sicherheit für Anfänger — zentrales Stylesheet
   Aufbau: 1. Tokens  2. Reset  3. Layout  4. Komponenten  5. Seiten  6. Utilities
   ========================================================================== */

/* 1. DESIGN TOKENS ------------------------------------------------------- */
:root,
:root[data-theme="dark"] {
  --bg: #090c14;
  --bg-secondary: #0d111c;
  --card-bg: #12172400;
  --card-bg-solid: #131926;
  --card-border: rgba(148, 163, 184, 0.12);
  --text: #e7eaf1;
  --text-muted: #8a92a8;
  --accent: #3d7eff;
  --accent-light: #74a3ff;
  --accent-dark: #245ad1;
  --accent-glow: rgba(61, 126, 255, 0.35);
  --success: #22c55e;
  --warning: #f5a524;
  --danger: #f0455c;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.25);
  --glass: rgba(17, 22, 35, 0.62);
  --glass-border: rgba(255, 255, 255, 0.08);
  --radius-lg: 8px;
  --radius-md: 6px;
  --radius-sm: 4px;
  --scrollbar-track: #0d111c;
  --scrollbar-thumb: #2b3547;
  --font-display: "Segoe UI", -apple-system, BlinkMacSystemFont, "Inter", Roboto, Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --max-width: 1180px;
  --header-h: 76px;
}

:root[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-secondary: #ffffff;
  --card-bg: #ffffff00;
  --card-bg-solid: #ffffff;
  --card-border: rgba(15, 23, 42, 0.16);
  --text: #10152a;
  --text-muted: #4c5670;
  --accent: #2158e0;
  --accent-light: #3b6fe8;
  --accent-dark: #17429f;
  --accent-glow: rgba(33, 88, 224, 0.22);
  --success: #0d6e33;
  --warning: #9a5b00;
  --danger: #c81e3a;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 2px 6px rgba(15, 23, 42, 0.08);
  --glass: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(15, 23, 42, 0.14);
  --scrollbar-track: #e7eaf1;
  --scrollbar-thumb: #c2c9db;
}

/* 2. RESET --------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

section[id],
.faq-item[id],
h2[id] {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

:root[data-theme="light"] html,
html[data-theme="light"] {
  color-scheme: light;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.35s ease, color 0.35s ease, font-size 0.2s ease;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input,
textarea {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

/* Sichtbarer Fokus für Tastaturbedienung */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent-light);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* 3. LAYOUT --------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding: 96px 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-light);
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  margin-bottom: 14px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* Ladeanimation (initial) --------------------------------------------- */
.page-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-shield {
  width: 56px;
  height: 56px;
  stroke: var(--accent);
}

.loader-shield path {
  fill: none;
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 240;
  stroke-dashoffset: 240;
  animation: draw-shield 1.3s ease-in-out infinite;
}

@keyframes draw-shield {
  0% { stroke-dashoffset: 240; }
  55% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -240; }
}

/* Animierter Mauszeiger (nur Desktop, Pointer fein) -------------------- */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9998;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  will-change: transform;
}

.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-light);
}

.cursor-ring {
  width: 34px;
  height: 34px;
  border: 1.5px solid var(--accent-glow);
  transition: width 0.2s ease, height 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.cursor-ring.is-active {
  width: 52px;
  height: 52px;
  border-color: var(--accent-light);
  background: var(--accent-glow);
}

/* 4. HEADER / NAVIGATION --------------------------------------------------*/
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--card-border);
}

.nav {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.brand svg {
  width: 26px;
  height: 26px;
  stroke: var(--accent);
  flex-shrink: 0;
}

.brand-mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 6px;
}

.brand-fallback {
  display: none;
  width: 26px;
  height: 26px;
  stroke: var(--accent);
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  position: relative;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent-light);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
  background: var(--glass-border);
}

.nav-links a.is-active {
  color: var(--accent-light);
}

.nav-actions {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Theme Umschalter */
.theme-toggle {
  position: relative;
  width: 52px;
  height: 30px;
  border-radius: 999px;
  background: var(--glass-border);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  padding: 3px;
}

.theme-toggle .knob {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: #fff;
}

:root[data-theme="light"] .theme-toggle .knob {
  transform: translateX(22px);
}

.theme-toggle .knob svg {
  width: 13px;
  height: 13px;
  stroke: #fff;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
  stroke: var(--text);
}

/* 5. BUTTONS -------------------------------------------------------------*/
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.97rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 22px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent-light);
  color: var(--accent-light);
}

.btn-block {
  width: 100%;
}

/* 6. HERO ------------------------------------------------------------------*/
.hero {
  padding: 72px 0 100px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2.2rem, 4.4vw, 3.4rem);
  margin-bottom: 20px;
}

.hero h1 span {
  color: var(--accent-light);
}

.hero p.lead {
  font-size: 1.12rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-trust {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.hero-trust div {
  font-family: var(--font-mono);
}

.hero-trust strong {
  display: block;
  font-size: 1.5rem;
  color: var(--text);
  font-family: var(--font-display);
}

.hero-trust span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Terminal-Signaturelement */
.terminal {
  border-radius: var(--radius-lg);
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 16px;
  background: rgba(148, 163, 184, 0.06);
  border-bottom: 1px solid var(--card-border);
}

.terminal-bar span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--card-border);
}

.terminal-bar .label {
  width: auto;
  height: auto;
  border-radius: 0;
  background: none;
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.terminal-body {
  padding: 22px 20px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  min-height: 220px;
}

.terminal-body .line {
  margin-bottom: 10px;
  opacity: 0;
  color: var(--text-muted);
}

.terminal-body .line.done {
  opacity: 1;
}

.terminal-body .ok {
  color: var(--success);
}

.terminal-body .prompt {
  color: var(--accent-light);
}

.terminal-cursor {
  display: inline-block;
  width: 7px;
  height: 14px;
  background: var(--accent-light);
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* Hero Shield mit Scan Effekt */
.shield-visual {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 24px;
}

.shield-visual svg {
  width: 40%;
  stroke: var(--accent);
}

.shield-visual .scan-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: var(--accent-light);
}

@keyframes scan {
  0% { top: 8%; }
  100% { top: 92%; }
}

/* 7. KARTEN / CARDS --------------------------------------------------------*/
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card-grid-2col {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

a.card {
  display: block;
}

.card:hover {
  border-color: var(--accent-glow);
}

.card-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: none;
}

.card-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent-light);
}

.card h3 {
  font-size: 1.14rem;
  margin-bottom: 10px;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-light);
}

/* Scroll Fade-In */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 8. STUFEN / PROCESS ------------------------------------------------------*/
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.steps-2col {
  grid-template-columns: repeat(2, 1fr);
}

.step {
  position: relative;
  padding: 28px 22px;
  border-radius: var(--radius-lg);
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
}

a.step {
  display: block;
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

a.step:hover {
  border-color: var(--accent-glow);
}

a.step .step-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--accent-light);
  font-weight: 600;
}

.step .step-number {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-light);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  display: block;
}

.step h3 {
  font-size: 1.03rem;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

/* 9. BILD-SEKTIONEN mit Fallback ------------------------------------------*/
.media-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--card-border);
  background: #12172a;
  aspect-ratio: 16/10;
  box-shadow: var(--shadow-md);
}

:root[data-theme="light"] .media-frame {
  background: #e7edfb;
}

.media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame .media-fallback-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.media-frame .media-fallback-icon svg {
  width: 30%;
  stroke: var(--accent);
  opacity: 0.5;
}

/* 10. CTA BAND --------------------------------------------------------------*/
.cta-band {
  border-radius: var(--radius-lg);
  padding: 56px;
  background: rgba(61,126,255,0.08);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-band h2 {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.cta-band p {
  color: var(--text-muted);
}

/* 11. FOOTER -----------------------------------------------------------------*/
.site-footer {
  border-top: 1px solid var(--card-border);
  padding: 60px 0 30px;
  background: var(--bg-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr 0.9fr;
  gap: 28px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 12px;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: var(--text);
  font-size: 0.94rem;
  padding: 6px 0;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--accent-light);
}

.footer-bottom {
  border-top: 1px solid var(--card-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 12. ZURÜCK NACH OBEN -------------------------------------------------------*/
.back-to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 24px var(--accent-glow);
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 400;
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  stroke: #fff;
}

/* 13. COOKIE BANNER -----------------------------------------------------------*/
.cookie-banner {
  position: fixed;
  right: 20px;
  bottom: 20px;
  left: auto;
  width: min(360px, calc(100vw - 40px));
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-md);
  z-index: 700;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transform: translateY(140%);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.cookie-banner.is-visible {
  transform: translateY(0);
}

.cookie-banner-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.cookie-banner-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent-light);
}

.cookie-banner h2 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.cookie-banner p {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.cookie-banner strong {
  color: var(--text);
}

.cookie-actions {
  display: flex;
  gap: 10px;
}

.cookie-actions .btn {
  flex: 1;
}

.cookie-banner-links {
  display: flex;
  gap: 16px;
}

.cookie-banner-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.cookie-banner-links a:hover {
  color: var(--accent-light);
}

/* 14. SEITEN-HEADER (Unterseiten) --------------------------------------------*/
.page-hero {
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--card-border);
}

.page-hero h1 {
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  margin-bottom: 14px;
}

.page-hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 600px;
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.page-updated {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  opacity: 0.8;
  margin-top: -6px;
  margin-bottom: 18px;
}

.breadcrumb a {
  color: var(--accent-light);
}

/* 15. FAQ -----------------------------------------------------------------*/
.faq-search {
  position: relative;
  max-width: 480px;
  margin: 0 auto 48px;
}

.faq-search input {
  width: 100%;
  padding: 15px 20px 15px 48px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: var(--card-bg-solid);
  color: var(--text);
  font-size: 0.98rem;
}

.faq-search input::placeholder {
  color: var(--text-muted);
}

.faq-search svg {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  stroke: var(--text-muted);
}

.faq-count {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 32px;
}

.faq-list {
  max-width: 780px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-category-heading {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent-light);
  padding-top: 26px;
  margin-top: 6px;
  border-top: 1px solid var(--card-border);
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.faq-list > .faq-category-heading:first-child {
  padding-top: 0;
  margin-top: 0;
  border-top: none;
}

.faq-category-heading.is-hidden {
  display: none;
}

.faq-item {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  background: var(--card-bg-solid);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: var(--accent-glow);
}

.faq-item summary {
  list-style: none;
  padding: 20px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 600;
  font-size: 1rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary .faq-plus {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.28s ease, background-color 0.2s ease;
}

.faq-item[open] summary .faq-plus {
  transform: rotate(45deg);
  background: var(--accent);
}

.faq-item summary .faq-plus svg {
  width: 13px;
  height: 13px;
  stroke: var(--text);
}

.faq-item[open] summary .faq-plus svg {
  stroke: #fff;
}

.faq-answer {
  padding: 0 22px 22px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.faq-answer p {
  margin-bottom: 10px;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer ul {
  margin: 10px 0 0;
  padding-left: 20px;
  list-style: disc;
}

.faq-answer li {
  margin-bottom: 6px;
}

.faq-answer li:last-child {
  margin-bottom: 0;
}

.faq-item.is-hidden {
  display: none;
}

.faq-item.is-level-hidden {
  display: none;
}

.faq-level-tag {
  flex-shrink: 0;
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
}

.faq-item[data-level="beginner"] .faq-level-tag {
  color: var(--success);
  border: 1px solid color-mix(in srgb, var(--success) 55%, transparent);
  background: color-mix(in srgb, var(--success) 12%, transparent);
}

.faq-item[data-level="advanced"] .faq-level-tag {
  color: var(--warning);
  border: 1px solid color-mix(in srgb, var(--warning) 55%, transparent);
  background: color-mix(in srgb, var(--warning) 12%, transparent);
}

/* Aufklappbare Dienst Karten, Projekte Seite ------------------------- */
.service-list {
  max-width: 900px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.service-item {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  background: var(--card-bg-solid);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.service-item[open] {
  border-color: var(--accent-glow);
}

.service-item summary {
  list-style: none;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-weight: 600;
  font-size: 1.05rem;
}

.service-item summary::-webkit-details-marker {
  display: none;
}

.service-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.3rem;
}

.service-name {
  flex: 1 1 auto;
}

.service-badges {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.service-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 9px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1;
  white-space: nowrap;
}

.service-badge--new {
  color: var(--accent-light);
  border: 1px solid color-mix(in srgb, var(--accent) 65%, transparent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}

.service-badge--private {
  color: var(--warning);
  border: 1px solid color-mix(in srgb, var(--warning) 65%, transparent);
  background: color-mix(in srgb, var(--warning) 14%, transparent);
}

.service-plus {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.28s ease, background-color 0.2s ease;
}

.service-item[open] .service-plus {
  transform: rotate(45deg);
  background: var(--accent);
}

.service-plus svg {
  width: 14px;
  height: 14px;
  stroke: var(--text);
}

.service-item[open] .service-plus svg {
  stroke: #fff;
}

.service-body {
  padding: 0 24px 24px 84px;
  color: var(--text-muted);
  font-size: 0.97rem;
}

.service-body p {
  margin-bottom: 12px;
}

.service-body p:last-of-type {
  margin-bottom: 0;
}

.service-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 4px;
  opacity: 0.7;
}

.service-actions {
  margin-top: 18px;
}

.service-group-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-light);
  padding-top: 22px;
  margin-top: 4px;
  border-top: 1px solid var(--card-border);
}

.service-list > .service-group-label:first-child {
  padding-top: 0;
  margin-top: 0;
  border-top: none;
}

@media (max-width: 600px) {
  .service-item summary { padding: 18px; gap: 12px; }
  .service-icon { width: 36px; height: 36px; font-size: 1.1rem; }
  .service-body { padding: 0 18px 20px 66px; }
}

.faq-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 40px 0;
  display: none;
}

.faq-empty.is-visible {
  display: block;
}

/* 16. TOOLS ----------------------------------------------------------------*/
.tool-card {
  padding: 30px;
}

.tool-card .tool-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--success);
  margin-bottom: 16px;
}

.tool-status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

.external-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.external-tag::after {
  content: "↗";
}

.password-meter {
  margin-top: 18px;
}

.password-meter input {
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: var(--bg-secondary);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.meter-track {
  height: 8px;
  border-radius: 999px;
  background: var(--glass-border);
  margin-top: 14px;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: var(--danger);
  transition: width 0.3s ease, background-color 0.3s ease;
}

.meter-label {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.meter-tips {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.meter-tips li {
  padding: 4px 0 4px 22px;
  position: relative;
}

.meter-tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid var(--card-border);
}

.meter-tips li.is-met::before {
  background: var(--success);
  border-color: var(--success);
}

/* Passwort Generator */
.password-generator {
  margin-top: 18px;
}

.generator-output {
  display: flex;
  gap: 10px;
}

.generator-output input {
  flex: 1;
  min-width: 0;
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: var(--bg-secondary);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.92rem;
}

.generator-output .btn {
  flex-shrink: 0;
}

.generator-options {
  margin-top: 18px;
}

.generator-length-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.generator-options input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.generator-checks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.generator-checks label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.generator-checks input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.generator-feedback {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--success);
  min-height: 1.2em;
}

/* Passwort Leck Prüfung (Have I Been Pwned) */
.pwned-check input[type="password"] {
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: var(--bg-secondary);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.pwned-result {
  margin-top: 14px;
  font-size: 0.9rem;
  min-height: 1.2em;
}

.pwned-result.is-safe {
  color: var(--success);
}

.pwned-result.is-leaked {
  color: var(--danger);
}

.pwned-result.is-pending,
.pwned-result.is-error {
  color: var(--text-muted);
}

.pwned-note {
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* PIN Generator */
.pin-generator {
  margin-top: 18px;
}

.pin-length-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.pin-length-btn {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: var(--bg-secondary);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.pin-length-btn.is-active {
  border-color: var(--accent);
  color: var(--accent-light);
  background: var(--accent-glow);
}

.pin-option-check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.pin-option-check input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Phishing Check Tool */
.phish-check textarea {
  width: 100%;
  min-height: 110px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: var(--bg-secondary);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  resize: vertical;
}

.phish-result {
  margin-top: 16px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  display: none;
  border: 1px solid var(--card-border);
}

.phish-result.is-visible {
  display: block;
}

.phish-result.level-low {
  border-color: var(--success);
  color: var(--success);
}

.phish-result.level-mid {
  border-color: var(--warning);
  color: var(--warning);
}

.phish-result.level-high {
  border-color: var(--danger);
  color: var(--danger);
}

/* 17. KONTAKTFORMULAR --------------------------------------------------------*/
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.form-group .required {
  color: var(--accent-light);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: var(--card-bg-solid);
  color: var(--text);
  font-size: 0.96rem;
  transition: border-color 0.2s ease;
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent-light);
}

.form-group.has-error input,
.form-group.has-error textarea {
  border-color: var(--danger);
}

.form-error {
  display: none;
  font-size: 0.82rem;
  color: var(--danger);
  margin-top: 6px;
}

.form-group.has-error .form-error {
  display: block;
}

.form-success {
  display: none;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--success);
  color: var(--success);
  font-size: 0.92rem;
  margin-top: 18px;
}

.form-success.is-visible {
  display: block;
}

.honeypot-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* 18. FEHLERSEITE / 404 ------------------------------------------------------*/
.error-page {
  min-height: 80vh;
  min-height: 80dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 12vw, 7.5rem);
  font-weight: 700;
  color: var(--accent-light);
  line-height: 1;
  margin-bottom: 20px;
}

.error-page p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 460px;
  margin: 0 auto 30px;
}

/* 19. RECHTLICHE SEITEN -------------------------------------------------------*/
.legal-content {
  max-width: 720px;
  margin-inline: auto;
}

.legal-content h2 {
  font-size: 1.3rem;
  margin: 40px 0 14px;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p {
  color: var(--text-muted);
  margin-bottom: 14px;
}

.legal-content ul {
  color: var(--text-muted);
  margin: 0 0 14px;
  padding-left: 20px;
  list-style: disc;
}

/* 20. TEAM / ÜBER MICH --------------------------------------------------------*/
.profile-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.tag {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  font-size: 0.84rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

/* 21. UTILITIES ---------------------------------------------------------------*/
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }
.mb-40 { margin-bottom: 40px; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  background: var(--accent);
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

/* 22. RESPONSIVE ---------------------------------------------------------------*/
@media (max-width: 960px) {
  .hero-grid,
  .contact-grid,
  .profile-layout {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cursor-dot,
  .cursor-ring {
    display: none;
  }
}

@media (max-width: 720px) {
  .nav {
    position: relative;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 12px);
    right: 24px;
    left: auto;
    bottom: auto;
    width: min(260px, calc(100vw - 48px));
    max-height: min(70vh, 480px);
    background: var(--card-bg-solid);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    gap: 2px;
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    overflow-y: auto;
    z-index: 550;
  }

  .nav-links.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-links a {
    padding: 13px 14px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }

  .menu-toggle {
    display: flex;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .cta-band {
    padding: 36px 26px;
    flex-direction: column;
    text-align: center;
  }

  .section {
    padding: 64px 0;
  }
}

@media (max-width: 420px) {
  .cookie-banner {
    left: 12px;
    right: 12px;
    width: auto;
    padding: 18px;
  }
}

/* 24. (frei) -------------------------------------------------------------*/

/* 26. WISSENS QUIZ ---------------------------------------------------------*/
.quiz-wrap {
  max-width: 640px;
  margin-inline: auto;
}

.quiz-progress {
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.quiz-progress span {
  display: block;
  margin-bottom: 10px;
}

.quiz-card {
  padding: 32px;
}

@media (max-width: 480px) {
  .quiz-card {
    padding: 22px 18px;
  }
}

.quiz-question {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 22px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.quiz-option {
  text-align: left;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: var(--bg-secondary);
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--accent-light);
}

.quiz-option.is-correct {
  border-color: var(--success);
  background: rgba(34, 197, 94, 0.12);
  color: var(--success);
}

.quiz-option.is-wrong {
  border-color: var(--danger);
  background: rgba(240, 69, 92, 0.12);
  color: var(--danger);
}

.quiz-option:disabled {
  cursor: default;
}

.quiz-feedback {
  margin-top: 16px;
  font-size: 0.9rem;
  min-height: 1.2em;
  color: var(--text-muted);
}

/* 27. ARCHITEKTUR DIAGRAMM (Projekte-Seite) --------------------------------*/
.architecture-diagram {
  max-width: 640px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.arch-row {
  display: flex;
  justify-content: center;
  width: 100%;
}

.arch-row--wrap {
  flex-wrap: wrap;
  gap: 14px;
}

.arch-connector {
  width: 2px;
  height: 26px;
  margin: 0 auto;
  background: var(--accent);
  position: relative;
}

.arch-connector::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-light);
}

.arch-row--branch {
  position: relative;
  padding-top: 26px;
}

.arch-row--branch::before {
  content: "";
  position: absolute;
  top: 0;
  left: 25%;
  right: 25%;
  height: 2px;
  background: var(--accent-glow);
}

.arch-row--branch .arch-box--small {
  position: relative;
}

.arch-row--branch .arch-box--small::before {
  content: "";
  position: absolute;
  top: -26px;
  left: 50%;
  width: 2px;
  height: 26px;
  background: var(--accent-glow);
}

@media (max-width: 620px) {
  .arch-row--branch {
    padding-top: 0;
  }

  .arch-row--branch::before,
  .arch-row--branch .arch-box--small::before {
    display: none;
  }
}

.arch-box {
  padding: 14px 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  background: var(--card-bg-solid);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.arch-box--outer {
  color: var(--text-muted);
  font-weight: 500;
  border-style: dashed;
}

.arch-box--accent {
  border-color: var(--accent-glow);
  color: var(--accent-light);
}

.arch-box--small {
  flex: 1 1 200px;
  font-size: 0.85rem;
  padding: 12px 16px;
}

.arch-box--muted {
  color: var(--text-muted);
  font-weight: 500;
}

@media (max-width: 560px) {
  .arch-box {
    font-size: 0.85rem;
    padding: 12px 16px;
  }
}

/* 28. DRUCKANSICHT ----------------------------------------------------------*/
@media print {
  .site-header,
  .site-footer,
  .back-to-top,
  .cookie-banner,
  .cursor-dot,
  .cursor-ring,
  .page-loader,
  .skip-link,
  .print-button,
  .faq-search,
  #glossary-search {
    display: none !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  body {
    background: #fff !important;
    color: #000 !important;
  }

  .card {
    break-inside: avoid;
    border: 1px solid #ccc !important;
    background: #fff !important;
    box-shadow: none !important;
  }

  a {
    color: #000 !important;
    text-decoration: underline;
  }
}

.print-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.print-button svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
}

/* 31. ZUFÄLLIGER SICHERHEITSTIPP (Startseite) ------------------------------*/
.tip-card {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
  padding: 36px 32px;
}

.tip-card p {
  font-size: 1.05rem;
  margin: 14px 0 20px;
}

/* 32. BEFEHLS- UND DIAGNOSE LISTEN (Cheat Sheets, Netzwerk Diagnose) --------*/
.cmd-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cmd-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding: 10px 0;
  border-top: 1px solid var(--card-border);
}

.cmd-row:first-child {
  border-top: none;
}

.cmd-row code {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--accent-light);
  background: var(--bg-secondary);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.cmd-row span {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.diagnose-list dt {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 14px;
}

.diagnose-list dt:first-child {
  margin-top: 0;
}

.diagnose-list dd {
  font-size: 1rem;
  font-weight: 600;
  word-break: break-word;
}

/* 33. BALKENDIAGRAMM (FAQ Themenverteilung) ------------------------------*/
.salary-chart {
  max-width: 640px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.salary-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.salary-row-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.92rem;
  color: var(--text);
}

.salary-row-label span:last-child {
  color: var(--accent-light);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.salary-bar-track {
  height: 14px;
  border-radius: 999px;
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  overflow: hidden;
}

.salary-bar-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--accent);
}

.salary-note-card {
  max-width: 640px;
  margin: 28px auto 0;
  text-align: center;
  padding: 22px 26px;
}

/* 34. QUIZ KREISDIAGRAMM ----------------------------------------------------*/
.quiz-ring-wrap {
  position: relative;
  width: 140px;
  height: 140px;
  margin: 0 auto 22px;
}

.quiz-ring {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.quiz-ring-track {
  fill: none;
  stroke: var(--card-border);
  stroke-width: 10;
}

.quiz-ring-fill {
  fill: none;
  stroke: var(--accent-light);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 327;
  stroke-dashoffset: 327;
  transition: stroke-dashoffset 1s ease;
}

.quiz-ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
}

/* 36. SCHUTZ EBENEN DIAGRAMM (IT Sicherheit Seite) -------------------------*/
.defense-layers {
  max-width: 480px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.defense-layer {
  width: 100%;
  padding: 16px 20px;
  border-radius: 999px;
  text-align: center;
  font-weight: 600;
  font-size: 0.95rem;
  color: #fff;
}

.defense-layer-1 {
  width: 100%;
  background: var(--accent);
}

.defense-layer-2 {
  width: 80%;
  background: var(--accent);
}

.defense-layer-3 {
  width: 60%;
  background: var(--accent-light);
  color: #0a0e17;
}

.defense-layer-4 {
  width: 40%;
  background: #fff;
  color: var(--accent-dark);
  border: 2px solid var(--accent-light);
}

.defense-layer-core {
  width: 20%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent-glow);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 6px;
  margin-top: 4px;
}

@media (max-width: 480px) {
  .defense-layer {
    font-size: 0.78rem;
    padding: 13px 10px;
  }

  .defense-layer-core {
    font-size: 0.6rem;
  }
}




/* 37. FOOTER SOCIAL LINKS ---------------------------------------------------*/
.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.footer-social a:hover {
  color: var(--accent-light);
  border-color: var(--accent-light);
}

.footer-social svg {
  width: 17px;
  height: 17px;
  stroke: currentColor;
}

@media (min-width: 721px) and (max-width: 960px) {
  .menu-toggle { display: none; }
}

/* 38. DIAGRAMME FÜR CHEAT SHEETS ---------------------------------------------*/

/* Byte Aufbau (Zahlensysteme) */
.bit-grid {
  display: flex;
  gap: 6px;
  max-width: 560px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.bit-box {
  flex: 1;
  min-width: 52px;
  text-align: center;
  padding: 14px 4px;
  border-radius: var(--radius-sm);
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
}

.bit-box .bit-value {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-light);
}

.bit-box .bit-place {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Stack und Queue */
.stack-queue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  max-width: 640px;
  margin: 0 auto;
}

.stack-visual {
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
  align-items: center;
}

.stack-visual .stack-item {
  width: 100%;
  padding: 10px;
  text-align: center;
  border-radius: var(--radius-sm);
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.stack-visual .stack-item.is-top {
  border-color: var(--accent-light);
  color: var(--accent-light);
}

.queue-visual {
  display: flex;
  gap: 6px;
  align-items: center;
}

.queue-visual .queue-item {
  flex: 1;
  padding: 10px 6px;
  text-align: center;
  border-radius: var(--radius-sm);
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.queue-visual .queue-item.is-front {
  border-color: var(--accent-light);
  color: var(--accent-light);
}

.diagram-label {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 10px;
}

/* Verbindungsdiagramm (Client/Server Linien) */
.conn-graph {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 34px;
  position: relative;
}

.conn-row {
  display: flex;
  align-items: center;
  gap: 30px;
  position: relative;
}

.conn-row-label {
  width: 70px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.conn-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

.conn-row.is-feature .conn-dot {
  background: var(--accent-light);
}

.conn-line {
  flex: 1;
  height: 2px;
  background: var(--card-border);
}

.conn-branch-connector {
  position: absolute;
  left: 100px;
  width: 2px;
  background: var(--card-border);
  top: -34px;
  height: 34px;
}

.conn-merge-connector {
  position: absolute;
  left: 280px;
  width: 2px;
  background: var(--card-border);
  bottom: -34px;
  height: 34px;
}

/* SQL Tabellen Verknüpfung */
.table-link-diagram {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 620px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}

.table-box {
  flex: 1;
  min-width: 220px;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  background: var(--card-bg-solid);
  overflow: hidden;
}

.table-box h4 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--card-border);
}

.table-box .table-row {
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--card-border);
}

.table-box .table-row:last-child { border-bottom: none; }
.table-box .table-row.is-key { color: var(--accent-light); font-weight: 700; }

.table-link-arrow {
  flex-shrink: 0;
  color: var(--accent-light);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-align: center;
}

@media (max-width: 640px) {
  .stack-queue-grid { grid-template-columns: 1fr; }
  .table-link-arrow { transform: rotate(90deg); }
}

/* 39. TERMINAL FENSTER OPTIK ------------------------------------------------*/
.terminal-window {
  max-width: 640px;
  margin: 0 auto 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-md);
  background: #0a0e17;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--card-bg-solid);
  border-bottom: 1px solid var(--card-border);
}

.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.terminal-dot.is-red { background: #ff5f57; }
.terminal-dot.is-yellow { background: #febc2e; }
.terminal-dot.is-green { background: #28c840; }

.terminal-title {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.cmd-terminal-body {
  padding: 18px 20px 22px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.9;
}

.terminal-line { white-space: pre-wrap; word-break: break-word; }
.terminal-prompt { color: var(--success); }
.terminal-path { color: var(--accent-light); }
.terminal-cmd { color: var(--text); }
.terminal-output { color: var(--text-muted); }

/* 40. LESEFORTSCHRITT BALKEN --------------------------------------------------*/
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--accent);
  z-index: 999;
  transition: width 0.1s ease;
}

@media (prefers-reduced-motion: reduce) {
  #reading-progress { transition: none; }
}

/* 41. SICHERHEITS MYTHEN ------------------------------------------------------*/
.myth-card {
  max-width: 720px;
  margin: 0 auto 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-border);
  background: var(--card-bg-solid);
  overflow: hidden;
}

.myth-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 22px;
}

.myth-row--wrong {
  background: rgba(240, 69, 92, 0.06);
  border-bottom: 1px solid var(--card-border);
}

.myth-row--right {
  background: rgba(34, 197, 94, 0.06);
}

.myth-row p { margin: 0; color: var(--text); }

.myth-badge {
  flex-shrink: 0;
  padding: 4px 11px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  margin-top: 2px;
}

.myth-row--wrong .myth-badge { background: rgba(240, 69, 92, 0.16); color: var(--danger); }
.myth-row--right .myth-badge { background: rgba(34, 197, 94, 0.16); color: var(--success); }

@media (max-width: 600px) {
  .myth-row { flex-direction: column; gap: 8px; }
}

/* 42. VERGLEICHSTABELLE (Browser Vergleich) -----------------------------------*/
.table-wrapper {
  max-width: 820px;
  margin: 0 auto;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-border);
  background: var(--card-bg-solid);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.compare-table th, .compare-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--card-border);
  white-space: nowrap;
}

.compare-table th {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  background: var(--bg-secondary);
}

.compare-table td:first-child {
  font-weight: 600;
  color: var(--text-muted);
}

.compare-table tr:last-child td { border-bottom: none; }

.alert-note {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  background: var(--bg-secondary);
}

@media (max-width: 700px) {
  .compare-table th, .compare-table td {
    white-space: normal;
    font-size: 0.82rem;
  }
}

/* 43. DOCKER IMAGE LAYER DIAGRAMM ----------------------------------------------*/
.layer-stack {
  max-width: 360px;
  margin: 0 auto;
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
}

.layer-box {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.layer-box.is-container {
  border-color: var(--accent-light);
  background: var(--accent-glow);
  color: var(--accent-light);
  font-weight: 700;
}

/* 45. KONFETTI BEI PERFEKTEM QUIZ ERGEBNIS -------------------------------------*/
.confetti-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  overflow: hidden;
}

.confetti-piece {
  position: absolute;
  top: -12px;
  width: 8px;
  height: 12px;
  opacity: 0.9;
  animation-name: confetti-fall;
  animation-timing-function: ease-in;
  animation-fill-mode: forwards;
}

@keyframes confetti-fall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(360deg); opacity: 0; }
}

/* 46. EASTER EGGS -------------------------------------------------------------*/

.easter-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--card-bg-solid);
  border: 1px solid var(--accent-light);
  color: var(--text);
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 0.88rem;
  box-shadow: var(--shadow-md);
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
}

.easter-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* 47. SPRACHUMSCHALTER IM HEADER -----------------------------------------------*/
.lang-switch-header {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.lang-switch-header-btn {
  padding: 5px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.lang-switch-header-btn.is-active {
  background: var(--accent);
  color: #fff;
}

.lang-switch-header-btn:not(.is-active):hover {
  color: var(--text);
}

@media (max-width: 720px) {
  .lang-switch-header {
    display: none;
  }
}

.lang-switch-mobile {
  display: none;
}

@media (max-width: 720px) {
  .lang-switch-mobile {
    display: flex;
    align-self: stretch;
    justify-content: center;
    margin: 2px 2px 10px;
  }
}

/* 48b. INHALTSVERZEICHNIS (lange Seiten) --------------------------------- */
.page-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.page-toc a {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: var(--card-bg-solid);
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.page-toc a:hover,
.page-toc a:focus-visible {
  color: var(--accent-light);
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

/* 49. TASTATURKÜRZEL ÜBERSICHT ------------------------------------------ */
.shortcuts-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(4, 6, 12, 0.72);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.shortcuts-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.shortcuts-box {
  width: 100%;
  max-width: 420px;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg, 16px);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transform: translateY(-10px);
  transition: transform 0.2s ease;
}

.shortcuts-overlay.is-open .shortcuts-box {
  transform: translateY(0);
}

.shortcuts-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--card-border);
}

.shortcuts-header h2 {
  font-size: 1rem;
  font-weight: 700;
}

.shortcuts-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  padding: 4px;
}

.shortcuts-close svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
}

.shortcuts-list {
  padding: 10px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.shortcuts-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 1px solid var(--card-border);
}

.shortcuts-row:last-child {
  border-bottom: none;
}

.shortcuts-row span:first-child {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.shortcuts-keys {
  display: inline-flex;
  gap: 4px;
  flex-shrink: 0;
}

.shortcuts-keys kbd {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 3px 7px;
  border-radius: var(--radius-sm);
  background: var(--glass-border);
  border: 1px solid var(--card-border);
  color: var(--text);
}

/* 50. SCHWIERIGKEITSGRAD FILTER ------------------------------------------- */
.level-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 28px 0 -8px;
}

.level-filter-btn {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: var(--card-bg-solid);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.level-filter-btn:hover {
  color: var(--accent-light);
}

.level-filter-btn.is-active {
  color: #fff;
  border-color: var(--accent);
  background: var(--accent);
}

.card[data-level].is-level-hidden {
  display: none;
}

.card-level-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 10px;
}

.card[data-level="beginner"] .card-level-tag {
  color: var(--success);
}

.card[data-level="advanced"] .card-level-tag {
  color: var(--warning);
}
/* 52. FAQ FEEDBACK UND ZUFÄLLIGE FRAGE ------------------------------------ */
.faq-feedback {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--card-border);
}

.faq-feedback-label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.faq-feedback-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: var(--card-bg-solid);
  color: var(--text-muted);
  cursor: pointer;
}

.faq-feedback-btn svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
}

.faq-feedback-btn:hover {
  color: var(--accent-light);
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
}

.faq-feedback-btn.is-selected[data-vote="up"] {
  color: var(--success);
  border-color: color-mix(in srgb, var(--success) 55%, transparent);
  background: color-mix(in srgb, var(--success) 12%, transparent);
}

.faq-feedback-btn.is-selected[data-vote="down"] {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 55%, transparent);
  background: color-mix(in srgb, var(--danger) 12%, transparent);
}

.faq-feedback-thanks {
  font-size: 0.82rem;
  color: var(--accent-light);
}

.faq-random-wrap {
  text-align: center;
  margin-bottom: 32px;
}