/*!
 * Design-System «Fidifact» – Fassung 1.0 (18.10.2026), abgeleitet am 25.10.2026
 * © 2026 Fidifact. Alle Rechte vorbehalten.
 * Geschützt sind Design, Signet, Texte, Grafiken, Daten, Code und alle bereitgestellten Dateien.
 * Nutzung, Vervielfältigung, Bearbeitung oder Weitergabe nur mit schriftlicher Erlaubnis (URG, Schweiz).
 * Ohne Gewähr: Wer Inhalte oder Dateien verwendet, muss sie selbst prüfen; keine Haftung, soweit gesetzlich zulässig.
 */

/* ===== 1. Design-Tokens: Hell (Standard) ===== */
:root {
  color-scheme: light;

  /* Neutral – Sandstein / Kalk */
  --bg:         #F7F5F0;
  --surface:    #FFFFFF;
  --surface-2:  #EFECE4;
  --line:       #DEDAD0;
  --text:       #1F2933;
  --text-2:     #4A5562;
  --text-3:     #5E6874;

  /* Primär – Seeblau */
  --blue:       #2E6A8E;
  --blue-hover: #245675;
  --blue-soft:  #E3EEF5;
  --on-blue:    #FFFFFF;

  /* Sekundär – Wiesengrün */
  --green:      #4C8A5E;
  --green-text: #3B7049;
  --green-soft: #E4F0E7;
  --on-green:   #FFFFFF;

  /* Akzent – Ziegelorange (sparsam) */
  --orange:       #B85C24;
  --orange-hover: #9E4C1A;
  --orange-text:  #A85320;
  --orange-soft:  #FBEBDD;
  --on-orange:    #FFFFFF;

  /* Ergänzungen */
  --ocker:       #B8892A;
  --ocker-text:  #85620F;
  --ocker-soft:  #F7EFD9;
  --red:         #A8403E;
  --red-soft:    #F8E4E3;
  --violet:      #605F90;
  --violet-soft: #EAE9F4;

  /* Verlauf – Erkennungsmerkmal */
  --grad: linear-gradient(135deg, #2E6A8E 0%, #3A7C78 50%, #4C8A5E 100%);
  --grad-hero: radial-gradient(1200px 500px at 85% -10%, rgba(76,138,94,.18), transparent 60%),
               radial-gradient(900px 500px at -10% 10%, rgba(46,106,142,.16), transparent 60%);

  /* Diagrammpalette (validiert, feste Reihenfolge) */
  --c1: #2B6FA8; --c2: #C8692F; --c3: #00929E; --c4: #6A62B0; --c5: #3E8E55;

  /* Schatten */
  --shadow-1: 0 1px 2px rgba(31,41,51,.06), 0 1px 3px rgba(31,41,51,.08);
  --shadow-2: 0 10px 30px -10px rgba(31,41,51,.22), 0 4px 10px -6px rgba(31,41,51,.12);

  /* Schrift */
  --font-head: "Plus Jakarta Sans", system-ui, sans-serif;
  --font-body: "Figtree", system-ui, sans-serif;
  --fs-hero: clamp(2.3rem, 1.4rem + 4.2vw, 4.75rem);
  --fs-h2:   clamp(1.7rem, 1.25rem + 1.9vw, 2.75rem);
  --fs-h3:   clamp(1.15rem, 1.05rem + .45vw, 1.4rem);
  --fs-lead: clamp(1.05rem, 1rem + .35vw, 1.3rem);
  --fs-body: 1.0625rem;
  --fs-small: .875rem;

  /* Raster, Abstände, Radien */
  --container: 1280px;
  --gutter: clamp(16px, 4vw, 40px);
  --space-section: clamp(56px, 8vw, 112px);
  --radius-s: 8px;
  --radius:   14px;
  --radius-l: 22px;

  /* Bewegung */
  --ease: cubic-bezier(.2,.7,.2,1);
  --dur: .25s;
}

/* ===== 2. Dunkel: Systemeinstellung ===== */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg:#0F1720; --surface:#16212C; --surface-2:#1D2A37; --line:#2A3A4A;
    --text:#E6EAEE; --text-2:#B3BDC7; --text-3:#8F9AA6;
    --blue:#7FB3D5; --blue-hover:#9CC6E2; --blue-soft:rgba(127,179,213,.14); --on-blue:#0F1720;
    --green:#8CC7A0; --green-text:#8CC7A0; --green-soft:rgba(140,199,160,.14); --on-green:#0F1720;
    --orange:#F0A06A; --orange-hover:#F5B68A; --orange-text:#F0A06A; --orange-soft:rgba(240,160,106,.14); --on-orange:#0F1720;
    --ocker:#E0BC62; --ocker-text:#E0BC62; --ocker-soft:rgba(224,188,98,.14);
    --red:#E5827F; --red-soft:rgba(229,130,127,.14);
    --violet:#A9A8D6; --violet-soft:rgba(169,168,214,.14);
    --grad: linear-gradient(135deg, #4A90C8 0%, #3FA08F 55%, #5FAE77 100%);
    --grad-hero: radial-gradient(1200px 500px at 85% -10%, rgba(95,174,119,.20), transparent 60%),
                 radial-gradient(900px 500px at -10% 10%, rgba(74,144,200,.22), transparent 60%);
    --c1:#4A90C8; --c2:#CF6F30; --c3:#16A2AC; --c4:#8A80D0; --c5:#4FA36A;
    --shadow-1: 0 1px 2px rgba(0,0,0,.4);
    --shadow-2: 0 14px 34px -12px rgba(0,0,0,.7), 0 0 0 1px rgba(127,179,213,.10);
  }
}
/* ===== 3. Dunkel: manuell über Umschalter ===== */
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg:#0F1720; --surface:#16212C; --surface-2:#1D2A37; --line:#2A3A4A;
  --text:#E6EAEE; --text-2:#B3BDC7; --text-3:#8F9AA6;
  --blue:#7FB3D5; --blue-hover:#9CC6E2; --blue-soft:rgba(127,179,213,.14); --on-blue:#0F1720;
  --green:#8CC7A0; --green-text:#8CC7A0; --green-soft:rgba(140,199,160,.14); --on-green:#0F1720;
  --orange:#F0A06A; --orange-hover:#F5B68A; --orange-text:#F0A06A; --orange-soft:rgba(240,160,106,.14); --on-orange:#0F1720;
  --ocker:#E0BC62; --ocker-text:#E0BC62; --ocker-soft:rgba(224,188,98,.14);
  --red:#E5827F; --red-soft:rgba(229,130,127,.14);
  --violet:#A9A8D6; --violet-soft:rgba(169,168,214,.14);
  --grad: linear-gradient(135deg, #4A90C8 0%, #3FA08F 55%, #5FAE77 100%);
  --grad-hero: radial-gradient(1200px 500px at 85% -10%, rgba(95,174,119,.20), transparent 60%),
               radial-gradient(900px 500px at -10% 10%, rgba(74,144,200,.22), transparent 60%);
  --c1:#4A90C8; --c2:#CF6F30; --c3:#16A2AC; --c4:#8A80D0; --c5:#4FA36A;
  --shadow-1: 0 1px 2px rgba(0,0,0,.4);
  --shadow-2: 0 14px 34px -12px rgba(0,0,0,.7), 0 0 0 1px rgba(127,179,213,.10);
}


/* ===== 4. Basis ===== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 400 var(--fs-body)/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
h1, h2, h3, h4 { font-family: var(--font-head); color: var(--text); line-height: 1.1; letter-spacing: -.02em; margin: 0 0 .5em; text-wrap: balance; }
h1 { font-size: var(--fs-hero); font-weight: 800; letter-spacing: -.035em; }
h2 { font-size: var(--fs-h2); font-weight: 800; }
h3 { font-size: var(--fs-h3); font-weight: 700; letter-spacing: -.01em; }
p { margin: 0 0 1em; text-wrap: pretty; }
a { color: var(--blue); text-underline-offset: .2em; text-decoration-thickness: 1px; }
a:hover { color: var(--blue-hover); text-decoration-thickness: 2px; }
img, svg { max-width: 100%; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 4px; }
.num { font-variant-numeric: tabular-nums; }
.lead { font-size: var(--fs-lead); color: var(--text-2); max-width: 62ch; }
.muted { color: var(--text-3); }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ===== 5. Layout ===== */
.container { width: min(100% - 2 * var(--gutter), var(--container)); margin-inline: auto; }
.section { padding-block: var(--space-section); }
.section--alt { background: var(--surface-2); }
.section-head { max-width: 760px; margin-bottom: clamp(28px, 4vw, 48px); }
.eyebrow {
  display: inline-flex; align-items: center; gap: .5em;
  font: 700 .8rem/1 var(--font-head); letter-spacing: .12em; text-transform: uppercase;
  color: var(--green-text); margin-bottom: 1rem;
}
.eyebrow::before { content: ""; width: 22px; height: 3px; border-radius: 2px; background: var(--grad); }
.grid { display: grid; gap: clamp(14px, 2vw, 24px); grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--min, 340px)), 1fr)); }
.grid--2 { --min: 420px; }
.grid--4 { --min: 220px; }
.stack > * + * { margin-top: 1rem; }

/* ===== 6. Kopfzeile ===== */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .container { display: flex; align-items: center; gap: 16px; min-height: 68px; flex-wrap: wrap; padding-block: 8px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font: 800 1.15rem/1 var(--font-head); letter-spacing: -.02em; }
.brand:hover { color: var(--text); }
.brand svg { flex: none; }
.nav { display: flex; gap: 2px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--text-2); text-decoration: none; font-weight: 600; padding: 10px 12px; border-radius: var(--radius-s); position: relative; }
.nav a::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 6px; height: 2px; background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform var(--dur) var(--ease); border-radius: 2px; }
.nav a:hover, .nav a[aria-current] { color: var(--text); }
.nav a:hover::after, .nav a[aria-current]::after { transform: scaleX(1); }
.tools { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
@media (max-width: 1100px) { .nav { order: 3; width: 100%; margin-left: 0; overflow-x: auto; flex-wrap: nowrap; } .tools { margin-left: auto; } }

/* Hell/Dunkel-Knopf: zeigt Mond (→ dunkel) oder Sonne (→ hell) */
.theme-toggle {
  appearance: none; width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; cursor: pointer;
  background: transparent; color: var(--text-2); border: 1px solid var(--line);
  transition: background var(--dur), color var(--dur), border-color var(--dur), transform var(--dur) var(--ease);
}
.theme-toggle svg { width: 18px; height: 18px; grid-area: 1 / 1; transition: opacity var(--dur), transform .4s var(--ease); }
.theme-toggle .i-sun { opacity: 0; transform: rotate(-90deg) scale(.6); }
.theme-toggle.is-dark .i-sun { opacity: 1; transform: none; }
.theme-toggle.is-dark .i-moon { opacity: 0; transform: rotate(90deg) scale(.6); }
@media (hover: hover) { .theme-toggle:hover { color: var(--text); background: var(--surface-2); border-color: var(--text-3); } }

/* ===== 7. Buttons ===== */
.btn {
  --b-bg: var(--surface); --b-fg: var(--text); --b-bd: var(--line);
  display: inline-flex; align-items: center; justify-content: center; gap: .55em;
  min-height: 48px; padding: 0 22px; border-radius: 999px; cursor: pointer;
  background: var(--b-bg); color: var(--b-fg); border: 1.5px solid var(--b-bd);
  font: 700 1rem/1 var(--font-head); text-decoration: none;
  transition: transform var(--dur) var(--ease), background var(--dur), box-shadow var(--dur), border-color var(--dur);
}
.btn .arrow { transition: transform var(--dur) var(--ease); }
.btn--primary { --b-bg: var(--blue); --b-fg: var(--on-blue); --b-bd: var(--blue); }
.btn--accent  { --b-bg: var(--orange); --b-fg: var(--on-orange); --b-bd: var(--orange); }
.btn--secondary { --b-bg: transparent; --b-fg: var(--text); --b-bd: var(--line); }
.btn--green { --b-bg: var(--green-text); --b-fg: #fff; --b-bd: var(--green-text); }
:root[data-theme="dark"] .btn--green { --b-fg: var(--on-green); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn--green { --b-fg: var(--on-green); } }
.btn-note { display: block; font-size: var(--fs-small); color: var(--text-3); margin-top: .5rem; }
@media (hover: hover) {
  .btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); color: var(--b-fg); }
  .btn:hover .arrow { transform: translateX(4px); }
  .btn--primary:hover { --b-bg: var(--blue-hover); --b-bd: var(--blue-hover); }
  .btn--accent:hover { --b-bg: var(--orange-hover); --b-bd: var(--orange-hover); }
  .btn--secondary:hover { --b-bd: var(--blue); }
}
.btn:active { transform: translateY(0); }

/* ===== 8. Hero ===== */
.hero { position: relative; padding-block: clamp(56px, 9vw, 128px) clamp(40px, 6vw, 80px); background: var(--grad-hero); overflow: hidden; }
.hero::after { /* feines Punkteraster als technisches Detail */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: radial-gradient(color-mix(in srgb, var(--text) 14%, transparent) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 60%, transparent);
}
.hero > .container { position: relative; z-index: 1; }
.hero h1 { max-width: 15ch; }
.hero .lead { margin-bottom: 2rem; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-start; }

/* ===== 9. Kennzahlen ===== */
.stats { margin-top: clamp(40px, 6vw, 72px); display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.stat__value { font: 800 clamp(1.9rem, 1.5rem + 1.5vw, 2.6rem)/1 var(--font-head); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.stat__label { color: var(--text-2); font-size: .95rem; margin-top: .4rem; }

/* ===== 10. Karten ===== */
.card {
  position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-l);
  padding: clamp(20px, 2.4vw, 28px); display: flex; flex-direction: column; gap: .75rem;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
  isolation: isolate;
}
.card::before { /* Verlaufsrahmen beim Hover */
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1.5px; z-index: -1;
  background: var(--grad); opacity: 0; transition: opacity .35s var(--ease);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
}
.card h3 { margin: 0; }
.card p { color: var(--text-2); margin: 0; }
.card__icon { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--blue-soft); color: var(--blue); }
.card__icon svg { width: 24px; height: 24px; }
.card__icon--green { background: var(--green-soft); color: var(--green-text); }
.card__icon--orange { background: var(--orange-soft); color: var(--orange-text); }
.card__icon--violet { background: var(--violet-soft); color: var(--violet); }
.card__top { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.card__foot { margin-top: auto; padding-top: .75rem; display: flex; justify-content: space-between; align-items: center; gap: 8px; border-top: 1px dashed var(--line); font-size: var(--fs-small); color: var(--text-3); }
.card__link { font-weight: 700; text-decoration: none; display: inline-flex; gap: .35em; align-items: center; }
.card__link .arrow { transition: transform var(--dur) var(--ease); }
@media (hover: hover) {
  .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-2); border-color: transparent; }
  .card:hover::before { opacity: 1; }
  .card:hover .card__link .arrow { transform: translateX(4px); }
}

/* ===== 11. Badges / Pills ===== */
.badge { display: inline-flex; align-items: center; gap: .4em; font: 700 .78rem/1 var(--font-body); padding: 6px 10px; border-radius: 999px; white-space: nowrap; background: var(--surface-2); color: var(--text-2); }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge--blue   { background: var(--blue-soft);   color: var(--blue); }
.badge--green  { background: var(--green-soft);  color: var(--green-text); }
.badge--orange { background: var(--orange-soft); color: var(--orange-text); }
.badge--ocker  { background: var(--ocker-soft);  color: var(--ocker-text); }
.badge--red    { background: var(--red-soft);    color: var(--red); }
.badge--violet { background: var(--violet-soft); color: var(--violet); }
.pill { display: inline-block; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line); font-size: .85rem; color: var(--text-2); background: var(--surface); transition: border-color var(--dur), color var(--dur); }
@media (hover: hover) { .pill:hover { border-color: var(--green); color: var(--text); } }

/* ===== 12. Hinweisboxen ===== */
.note { display: grid; grid-template-columns: 24px 1fr; gap: 12px; padding: 16px 18px; border-radius: var(--radius); border: 1px solid; border-left-width: 4px; }
.note svg { width: 22px; height: 22px; margin-top: 2px; }
.note strong { display: block; font-family: var(--font-head); }
.note p { margin: .2rem 0 0; color: var(--text-2); }
.note--info    { background: var(--blue-soft);   border-color: var(--blue);   color: var(--blue); }
.note--success { background: var(--green-soft);  border-color: var(--green);  color: var(--green-text); }
.note--warning { background: var(--ocker-soft);  border-color: var(--ocker);  color: var(--ocker-text); }
.note--error   { background: var(--red-soft);    border-color: var(--red);    color: var(--red); }

/* ===== 13. Text / Bericht ===== */
.prose { max-width: 70ch; }
.prose h3 { margin-top: 1.8em; }
.prose ul { padding-left: 1.2em; }
.prose li::marker { color: var(--green); }
blockquote { margin: 1.5em 0; padding: 4px 0 4px 20px; border-left: 4px solid; border-image: var(--grad) 1; font: 600 1.2rem/1.45 var(--font-head); color: var(--text); }
blockquote cite { display: block; font: 400 .9rem var(--font-body); color: var(--text-3); margin-top: .5rem; font-style: normal; }
mark { background: var(--orange-soft); color: var(--text); padding: 0 .2em; border-radius: 4px; box-shadow: inset 0 -2px 0 var(--orange); }

/* ===== 14. Tabelle ===== */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
caption { text-align: left; padding: 14px 16px 0; font-weight: 700; font-family: var(--font-head); }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 700 .78rem/1.2 var(--font-body); text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); background: var(--surface-2); }
td.r, th.r { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr { transition: background var(--dur); }
@media (hover: hover) { tbody tr:hover { background: var(--blue-soft); } }
tbody tr:last-child td { border-bottom: 0; }
tr.is-best td:first-child { box-shadow: inset 3px 0 0 var(--orange); }

/* ===== 15. Fortschritt ===== */
.progress { height: 8px; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.progress > span { display: block; height: 100%; border-radius: inherit; background: var(--grad); width: var(--v, 50%); transform-origin: left; }
.js .reveal .progress > span { transform: scaleX(0); transition: transform 1s var(--ease) .2s; }
.js .reveal.is-visible .progress > span { transform: scaleX(1); }

/* ===== 16. Tabs ===== */
.tabs [role="tablist"] { display: flex; gap: 4px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.tabs [role="tab"] { appearance: none; background: none; border: 0; cursor: pointer; padding: 12px 16px; min-height: 44px; font: 700 .95rem var(--font-head); color: var(--text-3); border-bottom: 3px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tabs [role="tab"]:hover { color: var(--text); }
.tabs [role="tab"][aria-selected="true"] { color: var(--text); border-bottom-color: var(--orange); }
.tabs [role="tabpanel"] { padding-top: 20px; }

/* ===== 17. Formular ===== */
.form { display: grid; gap: 18px 20px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.field { display: flex; flex-direction: column; gap: 6px; }
.field--full { grid-column: 1 / -1; }
.field label, .field legend { font-weight: 700; font-size: .92rem; }
.field .hint { font-size: var(--fs-small); color: var(--text-3); }
.input, select.input, textarea.input {
  width: 100%; min-height: 48px; padding: 10px 14px; font: inherit; color: var(--text);
  background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--radius-s);
  transition: border-color var(--dur), box-shadow var(--dur);
}
textarea.input { min-height: 110px; resize: vertical; }
.input:hover { border-color: var(--text-3); }
.input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 4px var(--blue-soft); }
.input[aria-invalid="true"] { border-color: var(--red); }
.field .error { color: var(--red); font-size: var(--fs-small); font-weight: 600; }
.input-affix { display: flex; align-items: stretch; }
.input-affix span { display: grid; place-items: center; padding: 0 12px; background: var(--surface-2); border: 1.5px solid var(--line); border-right: 0; border-radius: var(--radius-s) 0 0 var(--radius-s); color: var(--text-2); font-weight: 700; }
.input-affix .input { border-radius: 0 var(--radius-s) var(--radius-s) 0; text-align: right; }
fieldset.field { border: 0; padding: 0; margin: 0; }
.choice { display: flex; align-items: center; gap: 10px; min-height: 40px; cursor: pointer; }
.choice input { width: 20px; height: 20px; accent-color: var(--green); }
.switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; font-weight: 600; font-size: .9rem; color: var(--text-2); }
.switch input { appearance: none; width: 42px; height: 24px; border-radius: 999px; background: var(--line); position: relative; cursor: pointer; transition: background var(--dur); margin: 0; }
.switch input::after { content: ""; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: #fff; transition: transform var(--dur) var(--ease); box-shadow: 0 1px 2px rgba(0,0,0,.3); }
.switch input:checked { background: var(--green); }
.switch input:checked::after { transform: translateX(18px); }

/* ===== 18. Diagramm ===== */
.chart { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-l); padding: clamp(18px, 2.4vw, 28px); position: relative; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .axis text, .chart .lbl-txt { fill: var(--text-3); font: 500 12px var(--font-body); }
.chart .val-txt { fill: var(--text); font: 700 12px var(--font-body); }
.chart .grid-line { stroke: var(--line); stroke-width: 1; }
.chart .seg { transition: opacity var(--dur); cursor: pointer; }
.chart svg:hover .seg { opacity: .45; }
.chart svg .seg:hover { opacity: 1; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 0 0 14px; padding: 0; list-style: none; font-size: .88rem; color: var(--text-2); }
.legend li { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.tooltip { position: absolute; pointer-events: none; background: var(--text); color: var(--bg); padding: 8px 10px; border-radius: 8px; font-size: .85rem; line-height: 1.35; opacity: 0; transform: translate(-50%, -110%); transition: opacity .15s; white-space: nowrap; z-index: 5; }
.tooltip.is-on { opacity: 1; }

/* ===== 19. Fusszeile ===== */
.site-footer { border-top: 1px solid var(--line); padding-block: 40px; color: var(--text-3); font-size: var(--fs-small); background: var(--bg); }
.site-footer .container { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; align-items: center; }
.site-footer a { color: var(--text-2); }

/* ===== 20. Einblenden beim Scrollen ===== */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); transition-delay: var(--d, 0s); }
.js .reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ===== 21. Druck ===== */
@media print {
  .site-header, .tools, .hero::after { display: none !important; }
  body { background: #fff; color: #000; }
  .card, .stat, .chart { break-inside: avoid; box-shadow: none; }
}