/* ==========================================================
   Fachseiten Chemie & Mathematik: Heftstil (Karoraster)
   Farben zentral anpassen: nur die Variablen unter :root ändern.
   Schriften: Bricolage Grotesque (Überschriften), Source Sans 3 (Text),
   JetBrains Mono (Zahlen/Kürzel), lokal aus /fonts/ geladen.
   ========================================================== */
@font-face { font-family: "Bricolage Grotesque"; font-weight: 600; font-style: normal; font-display: swap; src: url("/fonts/bricolage-grotesque-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Bricolage Grotesque"; font-weight: 700; font-style: normal; font-display: swap; src: url("/fonts/bricolage-grotesque-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Source Sans 3"; font-weight: 400; font-style: normal; font-display: swap; src: url("/fonts/source-sans-3-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Source Sans 3"; font-weight: 600; font-style: normal; font-display: swap; src: url("/fonts/source-sans-3-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Source Sans 3"; font-weight: 700; font-style: normal; font-display: swap; src: url("/fonts/source-sans-3-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 500; font-style: normal; font-display: swap; src: url("/fonts/jetbrains-mono-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 700; font-style: normal; font-display: swap; src: url("/fonts/jetbrains-mono-latin-700-normal.woff2") format("woff2"); }

:root {
  color-scheme: light dark;
  --paper: #F4F4EE;
  --panel: #FFFFFF;
  --ink: #13203A;
  --ink-2: #4A5873;
  --line: #C9D3E6;
  --grid: rgba(36, 87, 214, 0.08);
  --accent: #2457D6;
  --accent-dunkel: #1A3FA0;
  --accent-bg: #E1E9FB;
  --accent-ink: #FFFFFF;
  --pen: #C8281E;
  --pen-bg: #FBE3E0;
  --moos: #3A7352;
  --moos-bg: #E2F0E6;
  --punkt: rgba(36, 87, 214, 0.15);
  --schatten: 0 16px 30px -20px rgba(21, 34, 56, 0.55);
  --leiste: #13203A;           /* Topbar und Footer */
  --leiste-text: #D6DEF0;
  --font-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --font-math: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  /* Alte Variablennamen (werden z. B. vom Admin-Bereich verwendet) */
  --primaer: var(--accent);
  --primaer-dunkel: var(--accent-dunkel);
  --primaer-hell: var(--accent-bg);
  --text: var(--ink);
  --text-hell: var(--ink-2);
  --flaeche: var(--panel);
  --hintergrund: var(--paper);
  --linie: var(--line);
  --dunkel: var(--leiste);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0F1620;
    --panel: #151F36;
    --ink: #E7EDFB;
    --ink-2: #9AA8C7;
    --line: #2C3A5C;
    --grid: rgba(120, 160, 255, 0.08);
    --accent: #7BA2FF;
    --accent-dunkel: #A9C2FF;
    --accent-bg: #1B2A52;
    --accent-ink: #0E1525;
    --pen: #FF8178;
    --pen-bg: #3A1B1B;
    --moos: #8CCB9E;
    --moos-bg: #17301F;
    --punkt: rgba(120, 160, 255, 0.13);
    --schatten: 0 16px 30px -20px rgba(0, 0, 0, 0.8);
    --leiste: #0A1020;
    --leiste-text: #9AA8C7;
  }
}
:root[data-theme="dark"] {
--paper: #0F1620;
  --panel: #151F36;
  --ink: #E7EDFB;
  --ink-2: #9AA8C7;
  --line: #2C3A5C;
  --grid: rgba(120, 160, 255, 0.08);
  --accent: #7BA2FF;
  --accent-dunkel: #A9C2FF;
  --accent-bg: #1B2A52;
  --accent-ink: #0E1525;
  --pen: #FF8178;
  --pen-bg: #3A1B1B;
  --moos: #8CCB9E;
  --moos-bg: #17301F;
  --punkt: rgba(120, 160, 255, 0.13);
  --schatten: 0 16px 30px -20px rgba(0, 0, 0, 0.8);
  --leiste: #0A1020;
  --leiste-text: #9AA8C7;
}
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
}

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; text-wrap: balance; }
code { font-family: var(--font-math); font-weight: 500; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dunkel); text-decoration: underline; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 1rem; }

/* ---------- Topbar ---------- */
.topbar { background: var(--leiste); color: var(--leiste-text); font-size: 0.82rem; }
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; padding-top: 0.45rem; padding-bottom: 0.45rem; gap: 1rem; }
.topbar a { color: #fff; }

/* ---------- Header / Navigation ---------- */
.site-header { background: var(--paper); border-bottom: 1.5px solid var(--ink); position: sticky; top: 0; z-index: 50; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 1rem; }
.brand { display: flex; flex-direction: column; line-height: 1.2; }
.brand:hover { text-decoration: none; }
.brand strong { font-family: var(--font-display); font-size: 1.4rem; color: var(--ink); letter-spacing: -0.01em; }
.brand span { font-size: 0.8rem; color: var(--ink-2); }

.nav-toggle { display: none; }
.burger { display: none; cursor: pointer; font-size: 1.7rem; line-height: 1; color: var(--ink); }

.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 0.25rem; }
.main-nav a { display: block; padding: 0.55rem 0.9rem; border-radius: 4px; color: var(--ink); font-weight: 600; font-size: 0.95rem; }
.main-nav a:hover { background: var(--accent); color: var(--accent-ink); text-decoration: none; }

/* ---------- Hero ---------- */
.hero {
  /* Banner zu 80 % transparent (20 % Deckkraft), das Karoraster scheint durch */
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  border-bottom: 1.5px solid var(--ink);
  color: var(--ink);
  padding: 4rem 0 4.5rem;
}
.hero h1 { margin: 0 0 0.6rem; font-size: clamp(1.9rem, 4vw, 2.8rem); letter-spacing: -0.02em; }
.hero p { margin: 0 0 1.5rem; max-width: 620px; font-size: 1.15rem; color: var(--ink-2); }
.hero.klein { padding: 2.5rem 0 2.8rem; }
.hero.klein h1 { margin-bottom: 0.3rem; }
.hero.klein p { margin-bottom: 0; }

.btn {
  display: inline-block;
  padding: 0.6rem 1.3rem;
  border-radius: 6px;
  font-weight: 700;
  border: 1.5px solid var(--ink);
  background: var(--panel);
  color: var(--ink);
  margin: 0 0.5rem 0.5rem 0;
}
.btn:hover { text-decoration: none; background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.voll { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.voll:hover { filter: brightness(1.1); background: var(--accent); }

/* ---------- Inhalt ---------- */
main, main.wrap { padding: 2.5rem 1rem 3rem; }

.abschnitt { margin-bottom: 3rem; }
.abschnitt > h2 {
  margin: 0 0 1.2rem;
  font-size: clamp(1.5rem, 4vw, 1.9rem);
  display: inline-block;
  padding-bottom: 0.3rem;
  border-bottom: 3px solid var(--accent);
}

.grid { display: grid; gap: 1.25rem; }
.grid.zwei { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.drei { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.karte { background: var(--panel); border: 1.5px solid var(--ink); padding: 1.4rem; }
.karte h3 { margin: 0 0 0.5rem; font-size: 1.25rem; }
.karte p { margin: 0 0 0.8rem; color: var(--ink-2); }
.karte .datum {
  display: inline-block;
  background: var(--accent-bg);
  color: var(--accent-dunkel);
  font-family: var(--font-math);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.1rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.6rem;
}

.faecherkarte { text-align: center; padding: 2.2rem 1.5rem; transition: background 0.12s; }
.faecherkarte:hover { background: var(--accent-bg); }
.faecherkarte .icon { font-size: 2.6rem; display: block; margin-bottom: 0.4rem; }
.faecherkarte h3 a { color: var(--ink); }
.faecherkarte h3 a:hover { color: var(--accent); text-decoration: none; }

.hinweis {
  background: var(--panel);
  border: 1.5px solid var(--ink);
  outline: 1.5px solid var(--ink);
  outline-offset: 3px;
  margin: 3px;
  padding: 1rem 1.25rem;
}

.liste-links { margin: 0; padding-left: 1.2rem; }
.liste-links li { margin-bottom: 0.4rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--leiste); color: var(--leiste-text); padding: 2.5rem 0 1.5rem; font-size: 0.92rem; }
.site-footer a { color: #fff; }
.footer-grid { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin-bottom: 1.5rem; }
.site-footer h2 { margin: 0 0 0.6rem; color: #fff; font-family: var(--font-display); font-size: 1.05rem; }
.site-footer p { margin: 0 0 0.4rem; }
.footer-ende { border-top: 1px solid rgba(255, 255, 255, 0.2); padding-top: 1rem; font-size: 0.82rem; color: var(--leiste-text); }

/* ---------- Fachseiten: Klassenstufen & Kompetenzschwerpunkte ---------- */
.breadcrumb { font-size: 0.88rem; color: var(--ink-2); margin: 0 0 1rem; }
.breadcrumb a { color: var(--ink-2); }
.breadcrumb a:hover { color: var(--accent); }

.subnav { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 1.75rem; }
.subnav a { padding: 0.4rem 0.95rem; border-radius: 6px; border: 1.5px solid var(--ink); color: var(--ink); font-weight: 600; font-size: 0.9rem; background: var(--panel); }
.subnav a:hover, .subnav a.aktiv { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); text-decoration: none; }

.stufenliste { margin: 0.5rem 0 1rem; padding-left: 1.1rem; color: var(--ink-2); font-size: 0.92rem; }
.stufenliste li { margin-bottom: 0.15rem; }

.toolbar { display: flex; gap: 0.5rem; margin: 0 0 1rem; }
.toolbar button { font: inherit; font-size: 0.85rem; font-weight: 600; padding: 0.3rem 0.8rem; border-radius: 6px; border: 1.5px solid var(--ink); background: var(--panel); color: var(--ink); cursor: pointer; }
.toolbar button:hover { background: var(--accent-bg); }

.sp { background: var(--panel); border: 1.5px solid var(--ink); margin-bottom: 0.8rem; border-left: 6px solid var(--accent); }
.sp summary { cursor: pointer; padding: 1rem 1.25rem; font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.sp summary::-webkit-details-marker { display: none; }
.sp summary::after { content: "+"; color: var(--accent); font-family: var(--font-math); font-size: 1.5rem; line-height: 1; }
.sp[open] summary::after { content: "\2013"; }
.sp-body { padding: 0 1.25rem 1.25rem; }
.sp-body h2 { margin: 1rem 0 0.3rem; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--pen); }
.sp-body ul { margin: 0; padding-left: 1.2rem; }
.sp-body li { margin-bottom: 0.2rem; }

.material { margin-top: 1rem; padding: 0.8rem 1rem; background: var(--paper); border: 1px dashed var(--line); }
.material h2 { margin-top: 0; }
.material p { margin: 0; color: var(--ink-2); font-size: 0.9rem; }

.quelle { font-size: 0.85rem; color: var(--ink-2); margin-top: 2rem; }

/* ---------- Stoffverteilungsplan (Mathematik) ---------- */
.legende { margin: 0 0 1rem; font-size: 0.92rem; }
.legende summary { cursor: pointer; color: var(--accent-dunkel); font-weight: 600; }
.legende p { margin: 0.5rem 0 0; }
.stunden { display: inline-block; margin-left: 0.5rem; padding: 0.05rem 0.6rem; border-radius: 4px; background: var(--accent-bg); color: var(--accent-dunkel); font-family: var(--font-math); font-size: 0.8rem; font-weight: 700; white-space: nowrap; }
.einheit { display: grid; grid-template-columns: 5.5rem minmax(0, 1fr); gap: 0 1rem; padding: 1rem 0; border-top: 1px solid var(--line); }
.einheit:first-child { border-top: 0; padding-top: 0.25rem; }
.einheit .std { align-self: start; justify-self: start; padding: 0.2rem 0.6rem; border-radius: 4px; background: var(--accent); color: var(--accent-ink); font-family: var(--font-math); font-weight: 700; font-size: 0.85rem; white-space: nowrap; }
.einheit .std.zusatz { background: var(--ink-2); }
.einheit-text { grid-column: 2; min-width: 0; }
.einheit:not(:has(.std)) .einheit-text { grid-column: 1 / -1; }
.einheit-text h2 { margin: 0.8rem 0 0.25rem; }
.einheit-text h2:first-child { margin-top: 0; }
.einheit-text ul { margin: 0; padding-left: 1.2rem; }
.chips { margin: 0; display: flex; flex-wrap: wrap; gap: 0.35rem; }
.chip { padding: 0.05rem 0.55rem; border-radius: 4px; border: 1.5px solid var(--accent); background: var(--accent-bg); color: var(--accent-dunkel); font-family: var(--font-math); font-weight: 700; font-size: 0.8rem; }
.einheit-notiz { margin: 0.5rem 0; font-style: italic; color: var(--ink-2); }

/* ---------- Fehlerseite 404 ---------- */
.fehler404 { max-width: 640px; margin-inline: auto; text-align: center; }
.fehler404 .fehler-zahl { margin: 0; font-family: var(--font-display); font-size: clamp(5rem, 22vw, 9rem); font-weight: 700; line-height: 1; color: var(--accent); }
.fehler404 .karte { text-align: left; margin: 1.5rem 0; }
.beweis { margin: 0; padding-left: 1.2rem; }

/* ---------- Mobil ---------- */
@media (max-width: 760px) {
  body { font-size: 16px; }
  .burger { display: block; }
  .main-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--paper); border-bottom: 1.5px solid var(--ink); }
  .main-nav ul { flex-direction: column; padding: 0.5rem 1rem 1rem; }
  .nav-toggle:checked ~ .main-nav { display: block; }
  .topbar .wrap { flex-direction: column; align-items: flex-start; gap: 0.1rem; }
  .hero { padding: 2.8rem 0 3rem; }
}
@media (max-width: 560px) {
  .einheit { grid-template-columns: minmax(0, 1fr); }
  .einheit .std { margin-bottom: 0.5rem; }
  .einheit-text { grid-column: 1; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } html { scroll-behavior: auto; } }


/* ---------- Ergänzungen ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-ink); padding: 0.6rem 1rem; z-index: 100; font-weight: 700; }
.skip:focus { left: 0; }
.klein { font-size: 0.9rem; color: var(--ink-2); }
.main-nav a.aktiv { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 6px; }
.main-nav a.aktiv:hover { text-decoration: none; }
.theme-toggle { font: inherit; font-size: 0.95rem; font-weight: 600; cursor: pointer; padding: 0.5rem 0.8rem; border: 1.5px solid var(--ink); border-radius: 4px; background: var(--panel); color: var(--ink); }
.theme-toggle:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.main-nav li { display: flex; align-items: center; }

/* Hero mit Skizze und Suche */
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 2.5rem; align-items: center; }
.hero-bild { width: 100%; max-width: 380px; justify-self: end; }
.svg-panel { fill: var(--panel); stroke: var(--ink); stroke-width: 1.5; }
.svg-achse line { stroke: var(--ink-2); stroke-width: 1.5; }
.svg-achse path { fill: var(--ink-2); }
.svg-ticks path { stroke: var(--ink-2); stroke-width: 1.5; fill: none; }
.svg-kurve { fill: none; stroke: var(--accent); stroke-width: 3.5; stroke-linecap: round; }
.svg-txt { fill: var(--ink); font-family: var(--font-math); font-weight: 700; font-size: 15px; }
.svg-txt.klein { font-size: 12px; fill: var(--ink-2); font-weight: 500; }
.svg-trenn { stroke: var(--line); stroke-width: 1.5; stroke-dasharray: 5 4; }
.svg-pen { fill: var(--pen); font-family: var(--font-math); font-weight: 700; font-size: 19px; }
.suchform { display: flex; gap: 0.5rem; margin: 0 0 1.2rem; max-width: 560px; }
.suchform input { flex: 1; min-width: 0; padding: 0.65rem 0.8rem; border: 1.5px solid var(--ink); border-radius: 6px; font: inherit; background: var(--panel); color: var(--ink); }
.suchform .btn { margin: 0; }
.suchform.gross { max-width: none; margin-bottom: 0.8rem; }

.stufenchips { display: flex; flex-wrap: wrap; gap: 0.4rem; justify-content: center; margin-top: 0.8rem; }
.stufenchips a { padding: 0.2rem 0.7rem; border: 1.5px solid var(--ink); border-radius: 6px; background: var(--paper); color: var(--ink); font-weight: 700; font-family: var(--font-math); font-size: 0.85rem; }
.stufenchips a:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); text-decoration: none; }

.neuliste { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.neuliste li { background: var(--panel); border: 1.5px solid var(--ink); padding: 0.7rem 1rem; }
.neuliste a { font-weight: 700; }

.kontaktkarte { display: flex; gap: 1.5rem; align-items: flex-start; }
.kontakt-kopf { flex: none; width: 76px; height: 76px; display: grid; place-items: center; background: var(--accent); color: var(--accent-ink); border: 1.5px solid var(--ink); font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; }
.kontaktkarte h3 { margin: 0; }
.kontaktkarte .btn { margin-top: 0.3rem; }

/* Fortschritt */
.fortschritt { display: flex; align-items: center; gap: 0.8rem; margin: 0 0 1rem; font-size: 0.9rem; color: var(--ink-2); }
.balken { flex: 0 0 140px; height: 10px; border: 1.5px solid var(--ink); background: var(--panel); display: block; }
.balken i { display: block; height: 100%; background: var(--accent); }

/* Suche */
.ergebnis { margin-bottom: 0.8rem; }
.ergebnis h3 { margin: 0 0 0.2rem; }
.ergebnis p { margin: 0.2rem 0; }

/* Hilfen */
.chips-erkl p { margin: 0.4rem 0; }
.chips-erkl .chip { display: inline-block; min-width: 2rem; text-align: center; margin-right: 0.5rem; }

/* Periodensystem */
.pse-legende { display: flex; flex-wrap: wrap; gap: 1rem; list-style: none; padding: 0; margin: 0 0 1rem; font-weight: 600; }
.pse-legende i { display: inline-block; width: 1.1rem; height: 1.1rem; vertical-align: -0.2rem; margin-right: 0.35rem; border: 1.5px solid var(--ink); }
.pse-scroll { overflow-x: auto; padding-bottom: 0.5rem; margin-bottom: 1rem; }
.pse { display: grid; grid-template-columns: 1.4rem repeat(18, minmax(0, 1fr)); grid-template-rows: repeat(8, auto) 14px auto auto; gap: 3px; min-width: 900px; }
.pse-kopf { font-size: 0.62rem; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; font-size: 0.7rem; color: var(--ink-2); text-align: center; line-height: 1.1; }
.pse-kopf b { font-family: var(--font-math); font-size: 0.85rem; color: var(--ink); }
.pse-platz { display: grid; place-items: center; font-family: var(--font-math); font-size: 0.7rem; color: var(--ink-2); border: 1.5px dashed var(--line); }
.el { position: relative; display: flex; flex-direction: column; align-items: center; padding: 0.25rem 0.1rem 0.3rem; border: 1.5px solid var(--ink); background: var(--panel); text-align: center; min-height: 62px; }
.el i { position: absolute; left: 4px; top: 2px; font-style: normal; font-size: 0.65rem; font-family: var(--font-math); color: var(--ink-2); }
.el b { font-family: var(--font-display); font-size: 1.15rem; line-height: 1.2; margin-top: 0.45rem; }
.el span { font-size: 0.55rem; line-height: 1.1; color: var(--ink-2); max-width: 100%; hyphens: auto; overflow-wrap: anywhere; }
.el.me { background: var(--panel); }
.el.hm { background: var(--accent-bg); }
.el.nm { background: color-mix(in srgb, var(--accent) 28%, var(--panel)); }
.el.ed { background: var(--pen-bg); border-color: var(--pen); }
.pse-legende .el { min-height: 0; padding: 0; }

/* Trainer */
.trainer-opt { border: 1.5px solid var(--line); margin: 0 0 1rem; padding: 0.4rem 1rem 0.8rem; display: inline-block; margin-right: 1rem; vertical-align: top; }
.trainer-opt legend { font-weight: 700; padding: 0 0.4rem; }
.trainer-opt label { display: block; margin: 0.25rem 0; cursor: pointer; }
.trainer-stand { font-family: var(--font-math); font-size: 0.9rem; color: var(--ink-2); margin: 0.5rem 0; }
.trainer-frage { font-size: clamp(1.3rem, 3.5vw, 1.8rem); margin: 0.6rem 0 1rem; }
.trainer-frage em { font-style: normal; color: var(--pen); }
.trainer-antworten { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0.6rem; }
.btn.antwort { margin: 0; font-family: var(--font-math); font-size: 1.05rem; padding: 0.8rem; text-align: center; cursor: pointer; font-weight: 700; }
.btn.antwort:disabled { cursor: default; }
.btn.antwort.richtig { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.antwort.falsch { background: var(--pen-bg); border-color: var(--pen); color: var(--ink); text-decoration: line-through; }
.trainer-rueck { min-height: 1.6rem; margin: 0.8rem 0; }

/* Funktionen zeichnen */
.graph-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.graph-tabs .btn { margin: 0; cursor: pointer; font: inherit; font-weight: 700; }
.graph-tabs .btn.aktiv { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.graph-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.5rem; align-items: start; }
#graph { width: 100%; aspect-ratio: 1; background: var(--panel); border: 1.5px solid var(--ink); }
#graph .gitter line { stroke: var(--line); stroke-width: 0.04; }
#graph .gitter line.achse { stroke: var(--ink); stroke-width: 0.1; }
#graph .tick { font-size: 0.7px; fill: var(--ink-2); font-family: var(--font-math); }
#graph .kurve { fill: none; stroke: var(--accent); stroke-width: 0.18; stroke-linejoin: round; }
#graph .ziel { fill: none; stroke: var(--pen); stroke-width: 0.14; stroke-dasharray: 0.5 0.4; }
#graph .dreieck { fill: none; stroke: var(--pen); stroke-width: 0.1; }
#graph .punkt { fill: var(--pen); }
.graph-regler > div { margin-bottom: 1rem; }
.graph-regler label { display: block; font-weight: 600; }
.graph-regler output { font-family: var(--font-math); color: var(--accent-dunkel); }
.graph-regler input[type=range] { width: 100%; accent-color: var(--accent); }
.graph-gleichung { font-family: var(--font-math); font-size: 1.3rem; font-weight: 700; margin: 1rem 0 0.4rem; }
.graph-eig { margin: 0 0 1rem; padding-left: 1.2rem; }
.graph-aufgabe { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.graph-aufgabe .btn { margin: 0; font: inherit; font-weight: 700; cursor: pointer; }
.graph-tabelle { margin-top: 1rem; }
.wtab { border-collapse: collapse; font-family: var(--font-math); margin-top: 0.5rem; }
.wtab th, .wtab td { border: 1.5px solid var(--ink); padding: 0.3rem 0.7rem; text-align: center; }
.wtab th { background: var(--accent-bg); }

@media (max-width: 760px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-bild { max-width: 300px; justify-self: start; }
  .graph-layout { grid-template-columns: 1fr; }
  .kontaktkarte { flex-direction: column; }
  .main-nav li { display: block; }
  .theme-toggle { width: 100%; text-align: left; }
}

/* ---------- Druckansicht ---------- */
@media print {
  :root, :root[data-theme="dark"] { --paper: #fff; --panel: #fff; --ink: #000; --ink-2: #333; --line: #999; --grid: transparent; --accent: #000; --accent-dunkel: #000; --accent-bg: #eee; --pen: #000; --pen-bg: #eee; --accent-ink: #fff; }
  body { background: #fff; font-size: 11pt; }
  .topbar, .site-header, .site-footer, .toolbar, .subnav, .breadcrumb, .skip, .suchform, .fortschritt, .hero-bild, .graph-aufgabe, .theme-toggle { display: none !important; }
  .hero { background: none; border: 0; padding: 0 0 0.5rem; }
  .karte, .sp, .hinweis { break-inside: avoid; border-color: #666; outline: 0; }
  a { color: #000; text-decoration: none; }
  .sp-body { display: block; }
}

button.btn { font: inherit; font-weight: 700; cursor: pointer; }

/* Gästebuch */
.gb-form label { display: block; font-weight: 700; margin: 1rem 0 0.25rem; }
.gb-form label:first-child { margin-top: 0; }
.gb-form input[type=text], .gb-form textarea { width: 100%; padding: 0.65rem 0.8rem; border: 1.5px solid var(--ink); border-radius: 6px; font: inherit; background: var(--panel); color: var(--ink); }
.gb-form textarea { resize: vertical; min-height: 7rem; }
.gb-falle { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.gb-eintrag { margin-bottom: 0.9rem; }
.gb-eintrag p { margin: 0.3rem 0; }
.gb-text { white-space: pre-line; overflow-wrap: anywhere; }
.gb-antwort { border-left: 5px solid var(--accent); padding-left: 0.8rem; margin-top: 0.7rem !important; white-space: pre-line; }


/* =====================================================================
   Organischer Look: weiche Formen, Wellen, Tupfen, sanfte Bewegung
   (überschreibt die Heft-Grundformen weiter oben)
   ===================================================================== */
:root {
  --welle-flach: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 40' preserveAspectRatio='none'%3E%3Cpath d='M0 40V24C120 4 240 2 380 16S640 40 800 24 1060 2 1200 22V40Z'/%3E%3C/svg%3E");
  --welle-linie: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='22' height='8' viewBox='0 0 22 8'%3E%3Cpath d='M0 4Q5.5 0 11 4T22 4' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round'/%3E%3C/svg%3E");
  --blob-a: 58% 42% 52% 48% / 46% 56% 44% 54%;
  --blob-b: 44% 56% 40% 60% / 56% 44% 58% 42%;
}

body {
  background-image:
    radial-gradient(circle at 8% 4%, color-mix(in srgb, var(--accent) 11%, transparent) 0, transparent 34%),
    radial-gradient(circle at 96% 38%, color-mix(in srgb, var(--moos) 15%, transparent) 0, transparent 30%),
    radial-gradient(circle at 4% 82%, color-mix(in srgb, var(--accent) 8%, transparent) 0, transparent 28%),
    radial-gradient(var(--punkt) 1.3px, transparent 1.5px);
  background-size: auto, auto, auto, 24px 24px;
}

/* Kopf: halbtransparent mit Unschärfe, weiche Kante */
.site-header { background: color-mix(in srgb, var(--paper) 86%, transparent); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); box-shadow: 0 10px 24px -22px rgba(21, 34, 56, 0.6); }
.main-nav a { border-radius: 999px; padding: 0.5rem 1rem; }
.main-nav a.aktiv { text-decoration-color: var(--moos); }
.theme-toggle { border-radius: 999px; border-width: 1.5px; }
.brand strong { letter-spacing: -0.02em; }

/* Hero: weich getönt, mit Blob und welligem Abschluss */
.hero { position: relative; overflow: hidden; border-bottom: 0; padding-bottom: 5.5rem;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 22%, transparent), color-mix(in srgb, var(--moos) 20%, transparent)); }
.hero.klein { padding-bottom: 4.2rem; }
.hero::before { content: ""; position: absolute; right: -90px; top: -110px; width: 420px; height: 420px; border-radius: var(--blob-a);
  background: radial-gradient(circle at 35% 35%, color-mix(in srgb, var(--moos) 38%, transparent), transparent 68%); pointer-events: none; }
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 44px; background: var(--paper);
  -webkit-mask: var(--welle-flach) bottom / 100% 100% no-repeat; mask: var(--welle-flach) bottom / 100% 100% no-repeat; }
.hero > .wrap { position: relative; z-index: 1; }
.hero-bild { filter: drop-shadow(0 18px 22px rgba(21, 34, 56, 0.22)); transform: rotate(1.6deg); }
.svg-panel { rx: 26px; ry: 26px; }

/* Schaltflächen und Chips als Pillen */
.btn, .subnav a, .toolbar button, .suchform input, .theme-toggle, button.btn, .graph-tabs .btn { border-radius: 999px; }
.btn { padding: 0.6rem 1.4rem; box-shadow: 0 8px 14px -12px rgba(21, 34, 56, 0.7); transition: transform 0.15s, background 0.15s, box-shadow 0.15s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 12px 16px -12px rgba(21, 34, 56, 0.8); }
.suchform input { padding: 0.7rem 1.2rem; }
.chip, .stufenchips a, .badge, .karte .datum, .einheit .std { border-radius: 999px; }
.chip { background: var(--moos-bg); border-color: var(--moos); color: var(--ink); }
.stufenchips a { background: var(--panel); }
.einheit .std { background: var(--moos); color: var(--paper); }
.subnav a.aktiv, .subnav a:hover { box-shadow: 0 8px 14px -12px rgba(21, 34, 56, 0.7); }

/* Abschnittsüberschriften mit Wellenlinie */
.abschnitt > h2 { border-bottom: 0; position: relative; padding-bottom: 0.7rem; }
.abschnitt > h2::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 8px; background: var(--accent);
  -webkit-mask: var(--welle-linie) 0 50% / 22px 8px repeat-x; mask: var(--welle-linie) 0 50% / 22px 8px repeat-x; }

/* Karten und Panels: runde Ecken, weiche Schatten */
.karte, .neuliste li, .eintrag, .trainer, .graphbox { border-radius: 20px; box-shadow: var(--schatten); border-color: color-mix(in srgb, var(--ink) 85%, transparent); }
.grid .karte { transition: transform 0.2s, box-shadow 0.2s, background 0.2s; }
.grid .karte:hover { transform: translateY(-4px); }
.faecherkarte { border-radius: 30px 18px 28px 20px; }
.faecherkarte:nth-child(2) { border-radius: 18px 30px 20px 28px; }
.faecherkarte .icon { display: grid; place-items: center; width: 88px; height: 88px; margin: 0 auto 0.7rem; font-size: 2.4rem; background: var(--accent-bg); border-radius: var(--blob-a); }
.faecherkarte:nth-child(2) .icon { background: var(--moos-bg); border-radius: var(--blob-b); }
.hinweis { border-radius: 16px; box-shadow: var(--schatten); background: color-mix(in srgb, var(--panel) 92%, transparent); }
.kontakt-kopf { border-radius: var(--blob-a); border: 0; background: linear-gradient(135deg, var(--accent), var(--moos)); color: #fff; }
.kontakt-kopf { box-shadow: var(--schatten); }
.material { border-radius: 14px; border-color: var(--moos); background: color-mix(in srgb, var(--moos-bg) 55%, transparent); }

/* Aufklapp-Themen */
.sp { border-radius: 18px; overflow: hidden; box-shadow: var(--schatten); border-left: 7px solid var(--moos); transition: box-shadow 0.2s; }
.sp:nth-of-type(even) { border-left-color: var(--accent); }
.sp summary { transition: background 0.15s; }
.sp summary:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); }
.sp summary::after { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--accent-bg); color: var(--accent-dunkel); font-size: 1.3rem; flex: none; }
.sp-body h2 { color: var(--moos); }
:root[data-theme="dark"] .sp-body h2 { color: var(--moos); }

/* Footer mit welligem Rand */
.site-footer { position: relative; margin-top: 5rem; padding-top: 3rem; }
.site-footer::before { content: ""; position: absolute; left: 0; right: 0; top: -43px; height: 44px; background: var(--leiste);
  -webkit-mask: var(--welle-flach) bottom / 100% 100% no-repeat; mask: var(--welle-flach) bottom / 100% 100% no-repeat; }
.topbar { background: linear-gradient(90deg, var(--leiste), color-mix(in srgb, var(--leiste) 82%, var(--moos))); }

/* Eingabe- und Fachseitenelemente */
.suchform input, .gb-form input[type=text], .gb-form textarea, .adm input, .adm select, .adm textarea { border-radius: 16px; }
.suchform input { border-radius: 999px; }
.btn.antwort { border-radius: 16px; }
#graph { border-radius: 20px; overflow: hidden; box-shadow: var(--schatten); }
.pse .el, .pse-platz { border-radius: 8px; }
.balken { border-radius: 999px; overflow: hidden; }
.balken i { background: linear-gradient(90deg, var(--accent), var(--moos)); }
.el.me { background: color-mix(in srgb, var(--moos-bg) 50%, var(--panel)); }
.trainer-opt { border-radius: 16px; }
.gb-antwort { border-left-color: var(--moos); }
.skip { border-radius: 0 0 14px 0; }

/* Sanftes Einblenden */
@media (prefers-reduced-motion: no-preference) {
  @keyframes aufsteigen { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
  @keyframes schweben { 0%, 100% { transform: rotate(1.6deg) translateY(0); } 50% { transform: rotate(0.6deg) translateY(-8px); } }
  main > .abschnitt, main > .karte, main > .hinweis { animation: aufsteigen 0.6s ease-out both; }
  main > .abschnitt:nth-of-type(2) { animation-delay: 0.08s; }
  main > .abschnitt:nth-of-type(3) { animation-delay: 0.16s; }
  .hero-bild { animation: schweben 7s ease-in-out infinite; }
}

@media (max-width: 760px) {
  .main-nav { border-radius: 0 0 22px 22px; box-shadow: 0 18px 24px -18px rgba(21, 34, 56, 0.6); border-bottom: 1px solid var(--line); }
  .main-nav a { border-radius: 14px; }
  .hero::before { width: 260px; height: 260px; right: -80px; top: -70px; }
  .hero-bild { transform: none; animation: none; }
}
@media print {
  body { background: #fff; }
  .hero::before, .hero::after, .site-footer::before, .abschnitt > h2::after { display: none; }
  .karte, .sp, .hinweis { box-shadow: none; }
}

/* Barrierefreiheit: Links im Fließtext unterstrichen, kräftigere Kontraste */
main p a, main li a, .hinweis a, .site-footer p a:hover { text-decoration: underline; text-underline-offset: 3px; }
.el span { color: var(--ink); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.site-footer :focus-visible, .topbar :focus-visible { outline-color: #fff; }
.el i { color: var(--ink); }

/* Rechentrainer */
.rt-wahl { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0.8rem 1.2rem; align-items: start; margin-bottom: 1rem; }
.rt-feld { margin: 0; display: grid; gap: 0.3rem; }
.rt-feld label { font-weight: 700; font-size: 0.9rem; }
.rt-feld select, #rt-eingabe { font: inherit; padding: 0.6rem 0.9rem; border: 1.5px solid var(--ink); border-radius: 14px; background: var(--panel); color: var(--ink); }
.rt-bereiche { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; }
.rt-bereiche label { display: inline-flex; gap: 0.35rem; align-items: center; }
.rt-bereiche label.aus { opacity: 0.55; }
.rt-pre { margin: 1rem 0 0; color: var(--ink-2); }
.rt-frage { font-family: var(--font-math, var(--font-display)); font-size: clamp(1.5rem, 4.5vw, 2.3rem); margin: 0.3rem 0 0.6rem; line-height: 1.8; overflow-wrap: anywhere; }
.rt-frage .gl { color: var(--ink-2); }
.rt-frage .fz { color: var(--pen); }
.rt-zeile { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; margin: 0.6rem 0; }
#rt-eingabe { flex: 1 1 200px; font-size: 1.2rem; font-family: var(--font-math, inherit); }
.rt-klein { padding: 0.25rem 0.9rem; font-size: 0.85rem; margin-left: 0.6rem; }
.bruch { display: inline-flex; flex-direction: column; align-items: center; vertical-align: middle; margin: 0 0.15em; line-height: 1.15; font-size: 0.85em; }
.bruch > span:first-child { border-bottom: 2px solid currentColor; padding: 0 0.25em 0.05em; }
.bruch > span:last-child { padding: 0.05em 0.25em 0; }
.trainer-rueck.warn { color: var(--ink); background: var(--accent-bg); }
[hidden] { display: none !important; }

/* Rechner und weitere Trainer */
.rt-text { font-size: clamp(1.1rem, 3vw, 1.45rem); font-family: var(--font-body); font-weight: 600; line-height: 1.7; }
.rt-text .nach { color: var(--ink-2); }
.rc h3 { margin-top: 0; }
.rc-in { font: inherit; padding: 0.55rem 0.9rem; border: 1.5px solid var(--ink); border-radius: 14px; background: var(--panel); color: var(--ink); width: 100%; box-sizing: border-box; font-family: var(--font-math, inherit); }
.rc-out { margin: 0.6rem 0 0; line-height: 1.7; overflow-wrap: anywhere; }
.rc-out:empty { display: none; }
.rc-out:not(:empty) { background: var(--accent-bg); border-radius: 14px; padding: 0.7rem 1rem; }
.rc .rt-feld { margin-bottom: 0.7rem; }
.rc code { background: var(--accent-bg); padding: 0 0.3em; border-radius: 6px; }

/* Formeltrainer */
.ft-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.ft-tabs .btn[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }
.rx-zeile { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.4rem; margin: 0.8rem 0; font-size: 1.35rem; font-family: var(--font-math, var(--font-display)); }
.rx-teil { display: inline-flex; align-items: baseline; gap: 0.2rem; }
.rx-plus, .rx-pfeil { margin: 0 0.35rem; color: var(--ink-2); }
.koef { width: 3.1rem; font: inherit; text-align: center; padding: 0.35rem 0.2rem; border: 1.5px solid var(--ink); border-radius: 12px; background: var(--panel); color: var(--ink); }
.koef:disabled { opacity: 0.85; }
.rx-loes { font-size: 1.2rem; margin: 0.4rem 0; font-family: var(--font-math, inherit); }
.trainer-rueck .wtab { margin-top: 0.5rem; width: auto; }
.trainer-rueck .wtab td, .trainer-rueck .wtab th { padding: 0.2rem 0.8rem; text-align: center; }
.trainer-rueck .wtab tr.gut td:last-child { color: var(--moos); font-weight: 700; }
.trainer-rueck .wtab tr.schlecht td:last-child { color: var(--pen); font-weight: 700; }
.vsf-opts { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 0.8rem; margin: 0.8rem 0; }
.vsf-opt { font: inherit; color: var(--ink); background: var(--panel); border: 1.5px solid var(--ink); border-radius: 18px; padding: 0.6rem; cursor: pointer; display: grid; place-items: center; min-height: 120px; transition: transform 0.15s, box-shadow 0.15s; }
.vsf-opt:hover:not(:disabled) { transform: translateY(-2px); box-shadow: var(--schatten); }
.vsf-opt:disabled { cursor: default; }
.vsf-opt.richtig { border-color: var(--moos); box-shadow: 0 0 0 3px var(--moos); }
.vsf-opt.falsch { border-color: var(--pen); box-shadow: 0 0 0 3px var(--pen); }
.vsf { width: 100%; height: auto; max-height: 170px; }
.vsf-zeig { max-width: 260px; margin: 0.8rem 0; }
.sk-text { margin: 0.6rem 0 1rem; padding: 0.9rem 1.2rem; border-left: 6px solid var(--moos); background: var(--moos-bg); border-radius: 0 16px 16px 0; font-size: 1.1rem; line-height: 1.6; }
.sk-eing { font-size: 1.15rem; }
.mat-art { margin: 0.7rem 0 0.2rem; font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--moos); }