/* Retro-Blog Stylesheet */

@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

:root {
  --font-pixel: "Press Start 2P", monospace;
  --font-sans: "Georgia", "Times New Roman", serif;
  --font-mono: "Courier New", ui-monospace, SFMono-Regular, Menlo, Monaco,
    Consolas, "Liberation Mono", monospace;
    

  --color-bg-main: #f3e7d3;
  --color-surface: #fff9ec;
  --color-surface-alt: #f0e2c7;
  --color-page-frame: #e0cfb1;

  --color-accent-neon: #b6712c;
  --color-accent-gold: #c08a3a;
  --color-accent-pink: #a2583a;
  --color-accent-green: #7f8b52;

  --color-text-primary: #2b2418;
  --color-text-muted: #6b5c43;
  --color-text-soft: #8b7a5c;

  --border-strong: 2px solid #b89a6a;
  --border-panel: 1px solid #c8b08a;
}

/* Theme-Varianten über CSS-Variablen (Standard: Neon) */

body[data-theme="matrix"] {
  --color-bg-main: #020806;
  --color-page-frame: #000000;

  --color-surface: #050f0a;
  --color-surface-alt: #071911;

  --color-accent-neon: #43d27a;
  --color-accent-gold: #7fe39e;
  --color-accent-pink: #59c98c;
  --color-accent-green: #2fbf63;

  --color-text-primary: #e2ffe9;
  --color-text-muted: #a7d1b2;
  --color-text-soft: #7ca58a;

  --border-strong: 2px solid #2fbf63;
  --border-panel: 1px solid #17452a;
  color-scheme: dark;
}

body[data-theme="amber"] {
  --color-bg-main: #0d0800;
  --color-page-frame: #000000;
  --color-surface: #120b00;
  --color-surface-alt: #1c1100;
  --color-accent-neon: #ff9500;
  --color-accent-gold: #ffb347;
  --color-accent-pink: #ff6200;
  --color-accent-green: #cc7700;
  --color-text-primary: #ffcc66;
  --color-text-muted: #cc8800;
  --color-text-soft: #996600;
  --border-strong: 2px solid #aa5500;
  --border-panel: 1px solid #663300;
  color-scheme: dark;
}

body[data-theme="c64"] {
  --color-bg-main: #3333aa;
  --color-page-frame: #2020aa;
  --color-surface: #3333aa;
  --color-surface-alt: #2828a0;
  --color-accent-neon: #7777ff;
  --color-accent-gold: #aaaaff;
  --color-accent-pink: #ff77ff;
  --color-accent-green: #77ffaa;
  --color-text-primary: #aaaaff;
  --color-text-muted: #8888dd;
  --color-text-soft: #6666bb;
  --border-strong: 2px solid #5555cc;
  --border-panel: 1px solid #4444bb;
  color-scheme: dark;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  font-size: 20px;
  line-height: 1.3;
  color-scheme: light;
  
  
  background-image: url('../media/backgrounds/bg2.png'); 
  
  /* Einstellungen für eine gute Darstellung */
  background-size: cover;       /* Bild füllt den ganzen Bildschirm aus */
  background-attachment: fixed; /* Bild scrollt nicht mit */
  background-position: center;  /* Bild wird zentriert */
  background-repeat: no-repeat; /* Bild wird nicht gekachelt */
}

.page-wrapper {
  max-width: 960px;
  margin: 10px auto;
  padding: 6px;
  border: var(--border-strong);
  background: var(--color-surface);
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.15);
}

.site-header {
  text-align: center;
  margin-bottom: 8px;
}

.site-title-box {
  border: 3px double var(--color-accent-pink);
  padding: 6px;
  background: linear-gradient(90deg, var(--color-surface-alt), var(--color-surface));
  text-transform: none;
  letter-spacing: 0.5px;
}

.site-title-box h1 {
  margin: 0;
  font-family: var(--font-pixel);
  color: var(--color-accent-neon);
  font-size: 1.6rem;
  line-height: 1.6;
  text-shadow: none;
  word-break: break-word;
}

.subtitle {
  margin: 5px 0 0;
  font-size: 1rem;
  color: var(--color-text-muted);
}

.marquee {
  margin-top: 8px;
  padding: 4px 0;
  background: var(--color-surface-alt);
  color: var(--color-accent-green);
  font-family: var(--font-mono);
  border-top: 1px dashed var(--color-accent-green);
  border-bottom: 1px dashed var(--color-accent-green);
  overflow: hidden;
  white-space: nowrap;
  position: relative;
}

.marquee span {
  display: inline-block;
  padding-left: 100%;
  animation: marquee-scroll 16s linear infinite;
}

.layout {
  display: flex;
  align-items: flex-start;
}

.sidebar {
  width: 200px;
  margin-right: 6px;
  padding: 6px;
  background: var(--color-surface-alt);
  border: 3px groove var(--color-accent-gold);
}

.sidebar h2 {
  margin-top: 0;
  font-size: 1.2rem;
  text-align: center;
  color: var(--color-accent-gold);
  text-transform: uppercase;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0 0 6px;
}

.sidebar li {
  margin-bottom: 2px;
}

.sidebar a {
  color: var(--color-accent-neon);
  text-decoration: none;
}

.sidebar a:hover {
  color: var(--color-accent-pink);
  text-decoration: underline;
}

.tiny-note {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

.theme-toggle {
  margin: 8px 0;
  padding: 4px;
  border: 2px groove var(--color-accent-gold);
  background: var(--color-surface-alt);
}

.theme-toggle-title {
  margin: 0 0 4px;
  font-size: 1rem;
  text-transform: uppercase;
  color: var(--color-accent-gold);
}

.theme-toggle-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.theme-btn {
  flex: 1 1 auto;
  padding: 2px 4px;
  font-size: 1rem;
  font-family: var(--font-mono);
  color: var(--color-text-primary);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-accent-neon);
  cursor: pointer;
}

.theme-btn[aria-pressed="true"] {
  background: var(--color-accent-neon);
  color: #000000;
  text-shadow: none;
}

.theme-btn:hover {
  border-color: var(--color-accent-pink);
}

.content {
  flex: 1;
  padding: 6px;
  border: var(--border-panel);
  background: var(--color-surface);
}

.panel {
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--color-accent-green);
}

.panel h2 {
  margin-top: 0;
  color: var(--color-accent-gold);
  font-size: 1.5rem;
  text-shadow: none;
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 8px;
}

.sort-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.sort-btn {
  padding: 2px 6px;
  font-size: 0.9rem;
  font-family: var(--font-mono);
  color: var(--color-text-primary);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-accent-neon);
  cursor: pointer;
}

.sort-btn[aria-pressed="true"] {
  background: var(--color-accent-neon);
  color: #000000;
}

.sort-btn:hover {
  border-color: var(--color-accent-pink);
}

.post {
  margin-bottom: 8px;
  padding: 6px;
  border: 2px outset var(--color-accent-neon);
  background: var(--color-surface-alt);
}

.post h3 {
  margin-top: 0;
  margin-bottom: 2px;
  font-size: 1.2rem;
  color: var(--color-accent-neon);
}

.meta {
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.links-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.links-list li {
  margin-bottom: 2px;
}

.links-category {
  margin-top: 8px;
  margin-bottom: 2px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.bullet {
  color: var(--color-accent-pink);
  margin-right: 4px;
}

a {
  color: var(--color-accent-neon);
}

a:hover {
  color: var(--color-text-link-hover, var(--color-accent-pink));
}

.site-footer {
  margin-top: 8px;
  padding-top: 4px;
  border-top: 1px dashed var(--color-accent-green);
  font-size: 0.9rem;
  text-align: center;
  color: var(--color-text-soft);
}

.blink {
  animation: blink 1s steps(2, start) infinite;
}

@keyframes blink {
  to {
    visibility: hidden;
  }
}

@keyframes marquee-scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .blink {
    animation: none;
  }

  .marquee span {
    animation: none;
    transform: translateX(0);
  }
}

@media (max-width: 768px) {
  .layout {
    flex-direction: column;
  }

  .sidebar {
    width: auto;
    margin-right: 0;
    margin-bottom: 10px;
  }
}



/* Styling für die Mathe-Aufgabe */
.math-task {
  margin: 15px 0;
  padding: 10px;
  background-color: var(--color-surface);
  border: 2px inset var(--color-page-frame);
}

/* Der ultimative 90er Button */
.retro-btn {
  background-color: var(--color-surface-alt);
  border: 2px outset #ffffff; /* Heller Rand oben/links für 3D-Effekt */
  border-right-color: var(--color-accent-neon);
  border-bottom-color: var(--color-accent-neon);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  padding: 5px 15px;
  cursor: pointer;
  box-shadow: 1px 1px 0px #000;
  margin-bottom: 10px;
}

.retro-btn:active {
  border: 2px inset var(--color-accent-neon);
  padding: 6px 14px 4px 16px; /* Simuliert das Herunterdrücken */
}

/* Der Beweis-Container */
.proof-content {
  display: none;
  margin-top: 10px;
  padding: 8px;
  background-color: #ffffd1; /* Klassisches Zettel-Gelb */
  border: 1px solid var(--color-accent-gold);
  color: #000; /* Bessere Lesbarkeit auf Gelb */
}

.proof-content.is-visible {
  display: block;
}

body[data-theme="matrix"] .proof-content,
body[data-theme="amber"] .proof-content,
body[data-theme="c64"] .proof-content {
  background-color: var(--color-surface-alt);
  color: var(--color-text-primary);
  border-color: var(--color-accent-gold);
}

body[data-theme="matrix"] .retro-btn,
body[data-theme="amber"] .retro-btn,
body[data-theme="c64"] .retro-btn {
  border-top-color: var(--color-text-soft);
  border-left-color: var(--color-text-soft);
}

.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 8px;
}

.tag-btn {
  padding: 2px 8px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--color-text-primary);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-accent-gold);
  cursor: pointer;
}

.tag-btn.active {
  background: var(--color-accent-gold);
  color: #000;
}

.tag-btn:hover {
  border-color: var(--color-accent-pink);
}

.reading-time {
  color: var(--color-text-soft);
  font-size: 0.85rem;
}

.toc {
  margin: 12px 0;
  padding: 8px;
  background: var(--color-surface-alt);
  border: 1px dashed var(--color-accent-gold);
  font-size: 0.9rem;
}

.toc-title {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  color: var(--color-accent-gold);
  text-transform: uppercase;
  font-size: 0.85rem;
}

.toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc li {
  margin-bottom: 2px;
}

.toc a {
  color: var(--color-text-primary);
  text-decoration: none;
}

.toc a:hover {
  color: var(--color-accent-neon);
  text-decoration: underline;
}

/* ── Photos Page ── */

.photos-main {
  padding: 16px 24px 48px;
}

.photos-back {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-bottom: 40px;
}

.photos-empty {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-soft);
  text-align: center;
  margin-top: 60px;
}

.photos-category {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 8px 0 0;
  text-align: center;
  width: 100%;
}

.photos-gallery {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 56px;
}

.photo-frame {
  margin: 0;
  padding: 10px 10px 38px;
  background: #f8f4ee;
  box-shadow: 3px 6px 16px rgba(0, 0, 0, 0.28), 0 1px 3px rgba(0, 0, 0, 0.1);
  max-width: 580px;
  width: 90%;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.photo-frame:nth-child(odd) {
  transform: rotate(-1.8deg);
}

.photo-frame:nth-child(even) {
  transform: rotate(1.3deg);
}

.photo-frame:hover {
  transform: rotate(0deg) scale(1.02) !important;
  box-shadow: 6px 10px 28px rgba(0, 0, 0, 0.35);
}

.photo-frame img {
  width: 100%;
  display: block;
}

.photo-frame figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: #666;
  text-align: center;
  letter-spacing: 0.4px;
}

/* ── Books Page ── */

.books-main {
  padding: 20px 24px 56px;
  background: var(--color-surface);
  min-height: 400px;
}

.books-back {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-bottom: 40px;
}

.books-back a,
.books-back a:visited {
  color: var(--color-accent-neon);
}

.books-back a:hover {
  color: var(--color-accent-pink);
}

.books-empty {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text-soft);
  text-align: center;
  margin-top: 80px;
}

.bookshelf-gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 20px;
  align-items: flex-end;
}

.books-category {
  flex-basis: 100%;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin: 32px 0 4px;
  padding-bottom: 6px;
  border-bottom: var(--border-panel);
}

.books-category:first-of-type {
  margin-top: 0;
}

.book-card {
  margin: 0;
  width: 160px;
  position: relative;
  cursor: default;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  transform-origin: bottom center;
}

.book-card img {
  width: 160px;
  height: 240px;
  object-fit: cover;
  display: block;
  filter: brightness(0.92);
  transition: filter 0.3s ease;
}

.book-card figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 28px 8px 7px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.88));
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: rgba(220, 180, 130, 0.55);
  text-align: center;
  line-height: 1.4;
  transition: color 0.3s ease;
  pointer-events: none;
}

.book-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 14px;
  background: linear-gradient(to left, rgba(0, 0, 0, 0.45), transparent);
  pointer-events: none;
}

.book-card:hover {
  transform: translateY(-14px);
  box-shadow:
    0 28px 48px rgba(0, 0, 0, 0.75),
    0 0 24px rgba(180, 100, 40, 0.18);
}

.book-card:hover img {
  filter: brightness(1);
}

.book-card:hover figcaption {
  color: rgba(240, 200, 150, 0.9);
}

.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

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

.lightbox-inner {
  position: relative;
  transform: scale(0.88);
  transition: transform 0.2s ease;
}

.lightbox-overlay.is-open .lightbox-inner {
  transform: scale(1);
}

.lightbox-img {
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  display: block;
  box-shadow: 0 12px 60px rgba(0, 0, 0, 0.9);
}

.lightbox-close {
  position: absolute;
  top: -2.2rem;
  right: 0;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
  transition: color 0.15s;
}

.lightbox-close:hover {
  color: #fff;
}