@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;600&display=swap');

/* ===========================================================
   🎨 Farbvariablen & Theme
   =========================================================== */
:root {
  --bg: #f0f2f5;
  --text: #1c1c1e;
  --header-gradient: linear-gradient(135deg, #4A90E2, #7B4397);
  --meta-bg: rgba(255, 255, 255, 0.18);
  --meta-text: #fff;
  --box-bg: #ffffff;
  --accent: #4A90E2;

  /* Codeblock Light */
  --code-bg: #f7f7f7;
  --code-text: #2b2b2b;
  --code-comment: #6a737d;
  --code-keyword: #7B4397;
  --code-string: #008000;
  --code-number: #005cc5;
  --code-function: #6f42c1;
  --code-variable: #00509e;
  --code-tag: #d73a49;
  --code-attr: #b08800;
  --code-error: #e5534b;
}

body.dark {
  --bg: #1e1e2f;
  --text: #e0e0e0;
  --header-gradient: linear-gradient(135deg, #7B4397, #4A90E2);
  --meta-bg: rgba(255, 255, 255, 0.1);
  --meta-text: #f0f0f0;
  --box-bg: #2a2a3b;
  --accent: #7dafff;

  /* Codeblock Dark */
  --code-bg: #282c34;
  --code-text: #abb2bf;
  --code-comment: #5c6370;
  --code-keyword: #c678dd;
  --code-string: #98c379;
  --code-number: #d19a66;
  --code-function: #61afef;
  --code-variable: #e5c07b;
  --code-tag: #e06c75;
  --code-attr: #d19a66;
  --code-error: #e06c75;
}

/* ===========================================================
   🧱 Grundlayout
   =========================================================== */
body {
  font-family: 'Poppins', sans-serif;
  background: var(--bg);
  color: var(--text);
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem;
  line-height: 1.7;
  transition: background 0.3s, color 0.3s;
}

/* ---------- HEADER ---------- */
header {
  background: var(--header-gradient);
  color: var(--meta-text);
  padding: 3rem 2rem 4rem 2rem;
  border-radius: 16px;
  box-shadow: 0 10px 20px rgba(0,0,0,0.15);
  text-align: center;
  position: relative;
}

/* Header Top Left/Right */
.header-top-left,
.header-top-right {
  position: absolute;
  top: 1rem;
  font-size: 0.95rem;
  font-weight: 600;
}
.header-top-left { left: 2rem; }
.header-top-right { right: 2rem; }
.header-top-left:empty,
.header-top-right:empty { display: none; }

header h1 {
  margin: 0 0 1rem 0;
  font-weight: 700;
  font-size: 2.8rem;
  text-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

/* Zurück-Button neben Fach */
.header-top-left {
  position: absolute;
  top: 1rem;
  left: 2rem;
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-back a {
  text-decoration: none;
  color: var(--meta-text);
  background: var(--meta-bg);
  padding: 0.2rem 0.6rem;
  border-radius: 8px;
  transition: all 0.2s;
  font-weight: 600;
}
.header-back a:hover {
  background: rgba(255,255,255,0.3);
  transform: scale(1.05);
}



.meta {
  margin-top: 0.8rem;
  font-size: 1rem;
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border-radius: 12px;
  background: var(--meta-bg);
  color: var(--meta-text);
  box-shadow: 0 6px 16px rgba(0,0,0,0.2);
  backdrop-filter: blur(10px);
  line-height: 1.5;
  transition: background 0.3s;
}
.meta:empty { display: none; }

/* Theme Toggle */
.theme-toggle {
  position: absolute;
  bottom: 1rem;
  right: 2rem;
  background: var(--meta-bg);
  color: var(--meta-text);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.theme-toggle:hover {
  background: rgba(255,255,255,0.3);
  transform: scale(1.05);
}

/* ---------- MAIN ---------- */
main {
  background: var(--box-bg);
  padding: 2.5rem;
  border-radius: 16px;
  margin-top: 2rem;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  transition: background 0.3s, box-shadow 0.3s;
}

h1, h2, h3 { color: var(--accent); }

img {
  max-width: 100%;
  border-radius: 12px;
  margin: 1.2rem 0;
  box-shadow: 0 6px 18px rgba(0,0,0,0.1);
}

/* ---------- FOOTER ---------- */
footer {
  margin-top: 3rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text);
}


/* ===========================================================
   💻 Code & Syntax Highlighting
   =========================================================== */

code {
  background: none;
  color: var(--code-text);
  padding: 0.25em 0.5em;
  border: none;
  font-family: 'Fira Code', monospace;
  font-size: 0.95em;
}



/* Dark Theme Anpassung */
body.dark .copy-btn {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

/* Hover Effekt */
.copy-btn:hover {
  background: var(--accent);
  color: #fff;
  transform: scale(1.05);
}




/* ===========================================================
   💻 Code & Syntax Highlighting – final version
   =========================================================== */

.highlight {
  position: relative;
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: 10px;
  padding: 1rem 1.2rem;
  margin: 1.2rem 0;
  overflow-x: auto;
  border: 1px solid rgba(0,0,0,0.1);
  font-family: 'Fira Code', monospace;
  font-size: 0.95em;
  line-height: 1.6;
}

/* Rouge line numbers */
.highlight table {
  border-collapse: collapse;
  width: 100%;
}
.highlight td.linenos {
  user-select: none;
  text-align: right;
  padding-right: 1rem;
  color: #888;
  border-right: 1px solid rgba(0,0,0,0.2);
  vertical-align: top;
}
.highlight td.code {
  padding-left: 1rem;
}

/* Copy-Button */
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255,255,255,0.15);
  color: var(--text);
  border: none;
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
body.dark .copy-btn {
  background: rgba(255,255,255,0.1);
  color: var(--text);
}
.copy-btn:hover {
  background: var(--accent);
  color: #fff;
  transform: scale(1.05);
}



/* Rouge Tokens */
.highlight .c     { color: var(--code-comment); font-style: italic; }
.highlight .k     { color: var(--code-keyword); font-weight: 600; }
.highlight .s     { color: var(--code-string); }
.highlight .n     { color: var(--code-variable); }
.highlight .nf    { color: var(--code-function); }
.highlight .o     { color: var(--code-keyword); }
.highlight .mi,
.highlight .m     { color: var(--code-number); }
.highlight .nb,
.highlight .bp    { color: var(--code-variable); }
.highlight .nt    { color: var(--code-tag); }
.highlight .na    { color: var(--code-attr); }
.highlight .nv    { color: var(--code-variable); }
.highlight .err   { color: var(--code-error); background: rgba(255,0,0,0.15); }


/* Scrollbars für Code */
.highlight::-webkit-scrollbar { height: 8px; }
.highlight::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 8px; }
.highlight::-webkit-scrollbar-track { background: transparent; }

/* --- Collapse (Details/Summary) Styling --- */
details {
  background: var(--color-canvas-subtle);
  border: 1px solid var(--color-border-default);
  border-radius: 6px;
  padding: 0.6em 1em;
  margin: 1em 0;
  transition: background 0.3s ease;
}

details[open] {
  background: var(--color-canvas-default);
}

summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-fg-default);
  list-style: none;
  position: relative;
  padding-right: 1.2em;
}

summary::marker {
  display: none;
}

summary::after {
  content: "▼";
  position: absolute;
  right: 0;
  top: 0;
  transition: transform 0.25s ease;
}

details[open] summary::after {
  transform: rotate(-180deg);
}