@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --color-bg: #0a0a0a;
  --color-surface: #1a1a1a;
  --color-text: #f2f2f2;
  --color-accent: #ffffff;
  --color-accent-2: #b0b0b0;
  --color-divider: color-mix(in srgb, #f2f2f2 16%, transparent);

  --color-neutral-100: #f5f5f5;
  --color-neutral-200: #e5e5e5;
  --color-neutral-300: #d4d4d4;
  --color-neutral-400: #b0b0b0;
  --color-neutral-500: #909090;
  --color-neutral-600: #707070;
  --color-neutral-700: #545454;
  --color-neutral-800: #3a3a3a;
  --color-neutral-900: #242424;

  --color-accent-100: #ffffff;
  --color-accent-200: #f0f0f0;
  --color-accent-300: #dcdcdc;
  --color-accent-400: #c2c2c2;
  --color-accent-500: #a3a3a3;
  --color-accent-600: #838383;
  --color-accent-700: #626262;
  --color-accent-800: #3d3d3d;
  --color-accent-900: #242424;

  --color-accent-2-100: #f0f0f0;
  --color-accent-2-200: #e0e0e0;
  --color-accent-2-300: #c8c8c8;
  --color-accent-2-400: #ababab;
  --color-accent-2-500: #8c8c8c;
  --color-accent-2-600: #6e6e6e;
  --color-accent-2-700: #545454;
  --color-accent-2-800: #383838;
  --color-accent-2-900: #202020;

  --color-section: #1f1f1f;
  --color-section-glow: #333333;
  --color-section-ghost: #4d4d4d;

  --font-heading: "Inter", system-ui, sans-serif;
  --font-heading-weight: 500;
  --font-body: "Inter", system-ui, sans-serif;

  --space-1: 2.8px;
  --space-2: 5.6px;
  --space-3: 8.4px;
  --space-4: 11.2px;
  --space-6: 16.8px;
  --space-8: 22.4px;
  --space-section-x: clamp(16px, 5vw, 32px);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;

  --content-max: 1200px;
  /* bewusst fix (nicht mit --content-max mitwachsend): verhindert eine wachsende Lücke
     zwischen Text und Bild in den zweispaltigen Hero-Sektionen auf breiten Bildschirmen */
  --hero-max: 1200px;

  --shadow-sm: 0 0 0 1px #3a3a3a;
  --shadow-md: 0 0 0 1px #545454, 0 6px 18px rgba(0,0,0,0.55);
  --shadow-lg: 0 0 0 1px #909090, 0 16px 40px rgba(0,0,0,0.65);

  /* TEST: hover glow, minimally lighter than --color-accent — remove these vars + all "TEST GLOW" blocks below to revert */
  --color-glow: color-mix(in srgb, var(--color-accent) 85%, white 15%);
  --glow-ring: 0 0 0 1px var(--color-glow), 0 0 8px 1px color-mix(in srgb, var(--color-glow) 70%, transparent);
}

body { background: var(--color-bg); color: var(--color-text); font-family: var(--font-body); }
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: var(--font-heading-weight); }
.lighten { mix-blend-mode: lighten; background-color: transparent; }

*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-size: 15px; line-height: 1.55; font-weight: 400; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); font-weight: var(--font-heading-weight); line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 var(--space-2); }
h1 { font-size: 42px; } h2 { font-size: 32px; } h3 { font-size: 25px; } h4 { font-size: 20px; } h5 { font-size: 16px; } h6 { font-size: 13px; }
h6 { letter-spacing: 0.08em; text-transform: uppercase; }
p { margin: 0 0 var(--space-3); }
a { color: var(--color-accent); text-underline-offset: 3px; }
img { display: block; max-width: 100%; }
figure { margin: 0; }
figcaption { font-size: 11px; margin-top: var(--space-1); color: color-mix(in srgb, var(--color-text) 55%, transparent); }
.text-muted { color: color-mix(in srgb, var(--color-text) 55%, transparent); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

.hr { height: 1px; border: 0; margin: var(--space-4) 0; background: linear-gradient(to right, transparent, var(--color-divider) 48px, var(--color-divider) calc(100% - 48px), transparent); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; cursor: pointer; text-decoration: none; font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 14px; line-height: 1.2; color: var(--color-text); background: transparent; border: 1px solid transparent; padding: var(--space-2) calc(var(--space-3) * 1.2); border-radius: var(--radius-md); transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease; }
.btn svg { display: block; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
/* TEST GLOW: hover state below — drop it to remove the lift + glow from all buttons */
.btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: var(--glow-ring); }
.btn-primary { color: var(--color-accent); border-color: var(--color-accent); }
.btn-primary:hover { background: color-mix(in srgb, var(--color-accent) 12%, transparent); }
.btn-primary:active { background: color-mix(in srgb, var(--color-accent) 22%, transparent); }
.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 14%, transparent); }
.btn-ghost { color: var(--color-accent); padding-inline: var(--space-1); }
.btn-ghost:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-ghost:active { background: color-mix(in srgb, var(--color-accent) 18%, transparent); }
.btn-icon { width: 36px; height: 36px; padding: 0; }
.btn-block { width: 100%; margin-top: var(--space-2); }

.field > label { display: block; font-size: 12px; margin-bottom: 5px; color: color-mix(in srgb, var(--color-text) 70%, transparent); }
.input { width: 100%; min-height: 36px; padding: 6px 10px; font: inherit; font-size: 14px; color: var(--color-text); caret-color: var(--color-accent); background: var(--color-surface); border: 1px solid var(--color-divider); border-radius: var(--radius-md); }
.input:hover { border-color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.input:focus-visible { border-color: var(--color-accent); outline-offset: 0; }
textarea.input { min-height: 90px; resize: vertical; }

.card { display: flex; flex-direction: column; gap: var(--space-2); padding: var(--space-3); border-radius: var(--radius-md); background: var(--color-surface); }
.card-kicker { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent); }
.card-title { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 17px; line-height: 1.2; }
.card-body { margin: 0; font-size: 13px; opacity: 0.8; flex: 1; }
.card-meta { display: flex; align-items: center; gap: 6px; font-size: 11px; color: color-mix(in srgb, var(--color-text) 50%, transparent); }
.elev-sm { box-shadow: var(--shadow-sm); } .elev-md { box-shadow: var(--shadow-md); } .elev-lg { box-shadow: var(--shadow-lg); }

.tag { display: inline-flex; align-items: center; font-size: 11px; letter-spacing: 0.02em; padding: 3px 10px; border-radius: calc(var(--radius-md) * 0.75); }
.tag-accent { background: var(--color-accent-800); color: var(--color-accent-100); transition: transform 0.18s ease, box-shadow 0.18s ease; }
.tag-accent-2 { background: var(--color-accent-2-800); color: var(--color-accent-2-100); transition: transform 0.18s ease, box-shadow 0.18s ease; }
.tag-neutral { background: var(--color-neutral-800); color: var(--color-neutral-100); transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease; }
/* TEST GLOW: hover states below — drop them to revert tags to no hover */
.tag-accent:hover, .tag-accent-2:hover { transform: translateY(-2px); box-shadow: var(--glow-ring); }
.tag-neutral:hover { transform: translateY(-2px); background: var(--color-accent-800); color: var(--color-accent-100); box-shadow: var(--glow-ring); }
.tag-outline { border: 1px solid var(--color-accent); color: var(--color-accent); }

.diagram-node { transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, color 0.18s ease; cursor: default; }
/* TEST GLOW: extra shadow layer added to box-shadow below — drop it to revert to plain var(--shadow-md) */
.diagram-node:hover { transform: translateY(-2px) scale(1.03); border-color: var(--color-accent); color: var(--color-accent); box-shadow: var(--shadow-md), var(--glow-ring); }

.diagram-node-toggle { cursor: pointer; }
.diagram-node-toggle summary { cursor: pointer; list-style: none; }
.diagram-node-toggle summary::-webkit-details-marker { display: none; }
.diagram-node-toggle summary::marker { content: ""; }
.diagram-node-toggle-caret { transition: transform 0.18s ease; }
.diagram-node-toggle[open] .diagram-node-toggle-caret { transform: rotate(180deg); }
.diagram-node-toggle-info { margin-top: var(--space-2); padding-top: var(--space-2); border-top: 1px solid var(--color-divider); text-align: left; line-height: 1.5; }

.hover-lift { transition: transform 0.2s ease, box-shadow 0.2s ease; }
/* TEST GLOW: extra shadow layer added to box-shadow below — drop it to revert to plain var(--shadow-lg) */
.hover-lift:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg), var(--glow-ring); }

.portrait-frame { transition: transform 0.25s ease, box-shadow 0.25s ease; }
/* TEST GLOW: extra shadow layer added to box-shadow below — drop it to revert to plain var(--shadow-lg) */
.portrait-frame:hover { transform: scale(1.04); box-shadow: var(--shadow-lg), var(--glow-ring); }

.nav { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: var(--space-1); padding: var(--space-3) var(--space-4); border-bottom: none; position: relative; }
.nav-sticky { position: sticky; top: 0; z-index: 100; background: color-mix(in srgb, var(--color-surface) 90%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--color-divider); }
.nav-brand { justify-self: start; font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 18px; }
.nav-links { justify-self: center; display: flex; align-items: center; gap: var(--space-2); }
.nav a { position: relative; z-index: 1; display: inline-block; min-width: 96px; text-align: center; color: inherit; text-decoration: none; font-size: 14px; padding: 6px 12px; border-radius: 999px; }
.nav a:hover, .nav a[aria-current='page'] { color: var(--color-accent); }
.nav .lang-switch { justify-self: end; }

.lang-switch { position: relative; display: flex; align-items: center; gap: 2px; padding: 3px; border: 1px solid var(--color-divider); border-radius: 999px; }
.lang-switch-thumb {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
  background: var(--color-accent);
  border-radius: 999px;
  transition: transform 0.3s cubic-bezier(0.65, 0, 0.35, 1);
}
.lang-switch button {
  position: relative;
  z-index: 1;
  border: none;
  background: transparent;
  color: var(--color-text);
  font: inherit;
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  font-size: 12px;
  line-height: 1;
  padding: 6px 11px;
  border-radius: 999px;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s ease, color 0.2s ease;
}
.lang-switch button:hover { opacity: 1; }
.lang-switch button.active { color: var(--color-bg); opacity: 1; }

.nav-pill {
  position: absolute;
  background: color-mix(in srgb, var(--color-accent) 14%, transparent);
  border: 1px solid var(--color-accent);
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  z-index: 0;
  transition: left 0.35s cubic-bezier(0.65, 0, 0.35, 1), width 0.35s cubic-bezier(0.65, 0, 0.35, 1), top 0.25s ease, height 0.25s ease, opacity 0.2s ease;
}

/* ========================================
   LEHRZEIT TRACKER
   ======================================== */

.lehre-section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px calc(var(--space-8) * 3);
}

.lehre-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: calc(var(--space-8) * 1.5);
  box-shadow: var(--shadow-md);
}

.lehre-card h2 {
  margin-top: var(--space-3);
  margin-bottom: var(--space-2);
}

.lehre-card > p {
  opacity: 0.7;
}

.lehre-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.lehre-stats > div {
  padding: var(--space-4);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

/* TEST GLOW: hover state below — drop it to revert to a plain .lehre-stats > div with no hover */
.lehre-stats > div:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--glow-ring);
}

.lehre-stats span {
  display: block;
  font-size: 30px;
  font-weight: 500;
  color: var(--color-accent);
  font-family: var(--font-heading);
}

.lehre-stats small {
  display: block;
  margin-top: 4px;
  opacity: 0.6;
  font-size: 12px;
}

.lehre-progress {
  width: 100%;
  height: 6px;
  margin-top: var(--space-6);
  background: var(--color-neutral-800);
  border-radius: 999px;
  overflow: hidden;
}

.lehre-progress-bar {
  width: 0%;
  height: 100%;
  background: var(--color-accent);
  border-radius: 999px;
  transition: width 0.5s ease;
}

.lehre-hinweis {
  margin-top: var(--space-3);
  margin-bottom: 0;
  font-size: 12px;
  opacity: 0.55;
}

/* ========================================
   DOCK (Icon-Leiste, z.B. Kontaktseite)
   ======================================== */

.dock {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  width: fit-content;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.dock-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  color: var(--color-text);
  text-decoration: none;
  transform-origin: bottom center;
  transition: transform 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.dock-icon:hover { border-color: var(--color-accent); color: var(--color-accent); }
.dock-icon svg { width: 22px; height: 22px; }

.dock-vertical {
  flex-direction: column;
  align-items: center;
  gap: calc(var(--space-8) * 1.3);
  padding: var(--space-6) var(--space-3);
}
.dock-vertical .dock-icon { transform-origin: center right; }

/* ========================================
   MARQUEE TEST (endlos scrollende Tag-Zeile)
   Zum Entfernen: diesen Block löschen + im HTML das .marquee-Div
   durch die ursprüngliche flex-wrap-Liste ersetzen.
   ======================================== */

.marquee {
  position: relative;
  overflow: hidden;
  /* vertikale Luft, damit die Hover-Animation (Anheben + Glow) der Tags oben/unten nicht abgeschnitten wird */
  padding: 10px 0 14px;
  -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
  mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}

.marquee-track {
  display: flex;
  align-items: center;
  width: max-content;
  /* fest (nicht --space-Token): muss so gross sein, dass eine einzelne
     Tag-Runde mindestens so breit wie der breiteste Container (--content-max, bis 1700px)
     wird — sonst ist die Wiederholung auf sehr breiten Bildschirmen gleichzeitig sichtbar */
  gap: 90px;
  animation: marquee-scroll 34s linear infinite;
}

.marquee-track .tag { width: 222px; padding: 10px 24px; border-radius: 999px; font-size: 13px; gap: 10px; white-space: nowrap; }

.tag-icon {
  display: inline-block;
  width: 18px;
  height: 18px;
  flex: none;
  background-color: currentColor;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-size: contain;
  mask-size: contain;
}

/* SQL- und VMware-Logos sind in ihrer Originalform kleiner/dünner als die anderen Icons und wirken sonst winzig */
.tag-icon-lg { width: 24px; height: 24px; }

/* Pausiert nur, wenn genau ein Tag berührt wird (nicht die ganze Leiste), damit dessen Hover-Animation sichtbar bleibt */
.marquee-track:has(.tag-neutral:hover) { animation-play-state: paused; }

@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}


/* Grosse Bildschirme: Container wächst mit, damit an den Rändern nicht so viel Leerraum entsteht */
@media (min-width: 1600px) {
  :root {
    --content-max: 1500px;
  }

  .lehre-section {
    max-width: 1380px;
  }
}

@media (min-width: 2000px) {
  :root {
    --content-max: 1700px;
  }

  .lehre-section {
    max-width: 1560px;
  }
}

/* Mobile */
@media (max-width: 700px) {
  .lehre-section {
    padding-left: 20px;
    padding-right: 20px;
  }

  .lehre-card {
    padding: var(--space-6);
  }

  .lehre-stats {
    gap: var(--space-2);
  }

  .lehre-stats > div {
    padding: var(--space-3);
  }

  .lehre-stats span {
    font-size: 24px;
  }

  /* Stack any top-level two/three-column layout into a single column */
  body > section[style*="display:grid"] {
    grid-template-columns: 1fr !important;
  }

  [style*="grid-template-columns:repeat(3,1fr)"] {
    grid-template-columns: 1fr !important;
  }

  .portrait-frame {
    margin: 0 auto !important;
  }

  [style*="white-space:nowrap"] {
    white-space: normal !important;
  }

  [style*="font-size:60px"] {
    font-size: 38px !important;
  }

  /* Nav: name + controls on top, links wrap onto their own row */
  .nav {
    grid-template-columns: 1fr auto;
    row-gap: 10px;
  }

  .nav-brand { grid-column: 1; grid-row: 1; }
  .lang-switch { grid-column: 2; grid-row: 1; }

  .nav-links {
    grid-column: 1 / -1;
    grid-row: 2;
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav a {
    min-width: 70px;
    padding: 5px 10px;
    font-size: 13px;
  }
}