/* =========================================================================
   Leben mit Makuladegeneration — Designsystem
   Grünes Schema, große Schrift, WCAG-AAA-Fließtext, barrierearm.
   ========================================================================= */

/* ---- Design-Tokens ---------------------------------------------------- */
:root {
  /* Grün-Schema */
  --green:        #1e6b44;   /* Primärgrün (Flächen, Kopfzeile) */
  --green-ink:    #14522f;   /* Grün für Text/Überschriften auf Weiß (>=7:1) */
  --green-deep:   #103a22;   /* dunkles Grün (Kontrast-Flächen) */
  --green-soft:   #eaf3ec;   /* Hellgrün (Info-Boxen, Zebra) */
  --green-line:   #cfe3d5;   /* dezente grüne Linien */

  /* Akzent / Call-to-Action */
  --accent:       #b4551f;   /* Terrakotta */
  --accent-dark:  #97430f;   /* Terrakotta dunkel (Hover, Text) */

  /* Neutrale */
  --ink:          #16201b;   /* Fließtext (nahezu schwarz, >=14:1 auf Weiß) */
  --ink-soft:     #3c4a41;   /* Sekundärtext */
  --bg:           #ffffff;
  --bg-tint:      #f5f8f6;   /* sehr helle Fläche */
  --line:         #d5ddd8;

  /* Signal (Evidenz-Ampel) */
  --sig-green:    #1e6b44;
  --sig-amber:    #8a5a00;
  --sig-red:      #a12a1e;

  /* Typografie */
  --font: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --fs-base: 1.25rem;        /* 20px */
  --lh: 1.6;
  --measure: 70ch;

  /* Maße */
  --wrap: 1200px;
  --sidebar-w: 300px;
  --radius: 10px;
  --gap: clamp(1rem, 3vw, 2rem);
  --shadow: 0 1px 2px rgba(16,58,34,.06), 0 6px 20px rgba(16,58,34,.08);
  --focus: 3px solid #0a4d8f;
}

/* Schrift-Skalierung über das Barrierefreiheits-Werkzeug */
body[data-fontscale="1"] { font-size: 112.5%; }
body[data-fontscale="2"] { font-size: 125%; }
body[data-fontscale="3"] { font-size: 137.5%; }

/* Hochkontrast-Modus */
body[data-contrast="high"] {
  --ink: #000; --ink-soft: #000; --bg: #fff; --bg-tint: #fff;
  --green-ink: #0a3a20; --line: #000; --green-line: #000;
}
body[data-contrast="high"] a { text-decoration-thickness: .12em; }

/* ---- Reset / Basis ---------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: var(--lh);
  color: var(--ink);
  background: var(--bg);
  text-underline-offset: .18em;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.2;
  color: var(--green-ink);
  margin: 0 0 .5em;
  text-wrap: balance;
}
h1 { font-size: clamp(2rem, 1.4rem + 2.4vw, 2.6rem); }
h2 { font-size: clamp(1.6rem, 1.3rem + 1.4vw, 2rem); margin-top: 1.6em; }
h3 { font-size: clamp(1.3rem, 1.15rem + .7vw, 1.5rem); margin-top: 1.4em; }

p, ul, ol { margin: 0 0 1em; }
main :where(p, ul, ol, .lede) { max-width: var(--measure); }
li { margin-bottom: .35em; }
strong, b { font-weight: 800; }

a { color: var(--green-ink); text-decoration: underline; }
a:hover { color: var(--accent-dark); }

:focus-visible {
  outline: var(--focus);
  outline-offset: 2px;
  border-radius: 3px;
}

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2rem); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--green-deep); color: #fff; padding: .8em 1.2em;
  text-decoration: none; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

/* ---- Kopfzeile -------------------------------------------------------- */
.masthead { background: var(--bg); border-bottom: 3px solid var(--green); }
.masthead-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-block: .8rem; flex-wrap: wrap;
}
.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--green-ink); }
.brand-mark {
  width: 2.2rem; height: 2.2rem; border-radius: 50%;
  background: radial-gradient(circle at 50% 45%, var(--green-soft) 0 26%, var(--green) 28% 60%, var(--green-deep) 62% 100%);
  box-shadow: inset 0 0 0 2px #fff, 0 0 0 2px var(--green);
  flex: none;
}
.brand-text { font-size: 1.35rem; font-weight: 500; letter-spacing: -.01em; }
.brand-text b { font-weight: 800; }

.masthead-tools { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.a11y-bar { display: flex; gap: .3rem; }
.a11y-btn {
  font: inherit; font-size: .95rem; font-weight: 700;
  color: var(--green-ink); background: var(--green-soft);
  border: 1px solid var(--green-line); border-radius: 999px;
  padding: .35em .8em; cursor: pointer; min-height: 40px;
}
.a11y-btn:hover { background: #ddece1; }
.a11y-btn[aria-pressed="true"] { background: var(--green); color: #fff; border-color: var(--green); }

/* ---- Buttons ---------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: .5em;
  font: inherit; font-weight: 800; line-height: 1.2;
  padding: .7em 1.3em; border-radius: 999px; border: 2px solid transparent;
  text-decoration: none; cursor: pointer; min-height: 48px;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-secondary { background: #fff; color: var(--green-ink); border-color: var(--green); }
.btn-secondary:hover { background: var(--green-soft); color: var(--green-ink); }
.btn-contact { background: var(--green-deep); color: #fff; }
.btn-contact:hover { background: #0b2c19; color: #fff; }

/* ---- Layout-Grundgerüst ---------------------------------------------- */
.nav-toggle {
  display: none;
  font: inherit; font-weight: 800; color: #fff; background: var(--green);
  border: none; width: 100%; padding: .8em 1rem; cursor: pointer; align-items: center; gap: .6rem;
}
.nav-toggle-bars, .nav-toggle-bars::before, .nav-toggle-bars::after {
  content: ""; display: block; width: 22px; height: 3px; background: #fff; position: relative;
}
.nav-toggle-bars::before { position: absolute; top: -7px; }
.nav-toggle-bars::after  { position: absolute; top: 7px; }

.shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: 2rem 3rem;
  align-items: start;
}

/* ---- Seitenleisten-Navigation ---------------------------------------- */
.sidebar { position: sticky; top: 1rem; }
.nav-list { list-style: none; margin: 0; padding: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.nav-list a { display: block; text-decoration: none; color: var(--ink); padding: .7em 1rem; font-weight: 700; }
.nav-list a:hover { background: var(--green-soft); color: var(--green-ink); }
.nav-list a[aria-current="page"] { background: var(--green); color: #fff; }
.nav-home a, .nav-item a, .nav-group > details > summary { border-bottom: 1px solid var(--line); }
.nav-group summary {
  list-style: none; cursor: pointer; padding: .7em 1rem; font-weight: 800; color: var(--green-ink);
  display: flex; align-items: center; justify-content: space-between;
}
.nav-group summary::-webkit-details-marker { display: none; }
.nav-group summary::after { content: "▾"; color: var(--green); transition: transform .15s ease; }
@media (prefers-reduced-motion: reduce) { .nav-group summary::after { transition: none; } }
.nav-group details[open] > summary::after { transform: rotate(180deg); }
.nav-group summary:hover { background: var(--green-soft); }
.nav-group ul { list-style: none; margin: 0; padding: 0; background: var(--bg-tint); }
.nav-group ul a { padding-left: 1.6rem; font-weight: 600; border-bottom: 1px solid var(--line); }
.nav-group ul li:last-child a { border-bottom: 0; }

/* ---- Fließtext-Bausteine ---------------------------------------------- */
.breadcrumb { font-size: .95rem; color: var(--ink-soft); margin-bottom: 1.2rem; }
.breadcrumb a { color: var(--green-ink); }
.breadcrumb .sep { color: var(--ink-soft); }

.lede { font-size: 1.2em; color: var(--ink); font-weight: 500; }

/* Inhaltsverzeichnis (Sprungmarken) */
.toc { background: var(--bg-tint); border: 1px solid var(--line); border-left: 6px solid var(--green);
  border-radius: var(--radius); padding: 1rem 1.3rem; margin: 1.8rem 0; max-width: var(--measure); }
.toc-title { font-weight: 800; color: var(--green-ink); margin: 0 0 .5rem; }
.toc ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .35rem; }
.toc a { color: var(--green-ink); font-weight: 600; }

.page-updated { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--line);
  font-size: .95rem; color: var(--ink-soft); }

/* Info-/Zusammenfassungs-Boxen */
.box {
  background: var(--green-soft); border: 1px solid var(--green-line);
  border-radius: var(--radius); padding: 1.2rem 1.4rem; margin: 1.6rem 0; max-width: var(--measure);
}
.box > :last-child { margin-bottom: 0; }
.box-title, .box .k-label {
  display: inline-block; font-weight: 800; color: var(--green-ink);
  text-transform: uppercase; letter-spacing: .04em; font-size: .85rem; margin-bottom: .5rem;
}
.box.kurzfassung { border-left: 6px solid var(--green); }
.box.hinweis-box { background: #fff6ef; border-color: #f0d3bd; }
.box.hinweis-box .box-title { color: var(--accent-dark); }

/* Statistik-Callout */
.stat { display: flex; align-items: baseline; gap: .6rem; margin: 1.4rem 0; flex-wrap: wrap; }
.stat .num { font-size: 2.6rem; font-weight: 800; color: var(--green-ink); line-height: 1; }
.stat .lbl { color: var(--ink-soft); max-width: 30ch; }

/* Evidenz-Ampel */
.evidenz { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin: 1.6rem 0; max-width: var(--measure); }
.evidenz-h { background: var(--green-deep); color: #fff; padding: .7em 1.1em; font-weight: 800; }
.evidenz ul { list-style: none; margin: 0; padding: 0; }
.evidenz li { display: flex; gap: .7rem; padding: .7em 1.1em; border-top: 1px solid var(--line); align-items: baseline; }
.evidenz li:first-child { border-top: 0; }
.evidenz .dot { width: .9rem; height: .9rem; border-radius: 50%; flex: none; translate: 0 .25rem; }
.dot.green { background: var(--sig-green); }
.dot.amber { background: var(--sig-amber); }
.dot.red   { background: var(--sig-red); }
.evidenz .region { font-weight: 800; min-width: 3.5em; }

/* Prüf-/Autorenbox */
.reviewed { display: flex; gap: 1rem; align-items: center; background: var(--bg-tint);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.2rem; margin: 1.6rem 0; max-width: var(--measure); }
.reviewed .avatar { width: 3.2rem; height: 3.2rem; border-radius: 50%; background: var(--green-soft);
  display: grid; place-items: center; color: var(--green-ink); font-weight: 800; flex: none; }
.reviewed .r-name { font-weight: 800; color: var(--green-ink); }
.reviewed .r-meta { font-size: .95rem; color: var(--ink-soft); }

/* Tabellen */
.table-wrap { overflow-x: auto; margin: 1.6rem 0; }
table { border-collapse: collapse; width: 100%; min-width: 28rem; }
th, td { text-align: left; padding: .7em .9em; border: 1px solid var(--line); vertical-align: top; }
thead th { background: var(--green); color: #fff; }
tbody tr:nth-child(even) { background: var(--green-soft); }

/* FAQ / Details */
.faq { margin: 2rem 0; }
.faq-item, details.studie-details {
  border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: .7rem; overflow: hidden; background: #fff;
}
.faq-item summary, details.studie-details summary {
  cursor: pointer; padding: 1em 1.2rem; font-weight: 800; color: var(--green-ink);
  list-style: none; display: flex; justify-content: space-between; gap: 1rem;
}
.faq-item summary::-webkit-details-marker, details.studie-details summary::-webkit-details-marker { display: none; }
.faq-item summary::after, details.studie-details summary::after { content: "+"; font-size: 1.4rem; color: var(--green); line-height: 1; }
.faq-item[open] summary::after, details.studie-details[open] summary::after { content: "–"; }
.faq-a, details.studie-details .details-body { padding: 0 1.2rem 1rem; }
.faq-a > :last-child { margin-bottom: 0; }

.einschraenkung { font-size: .97rem; color: var(--ink-soft); border-left: 4px solid var(--green-line); padding-left: 1rem; }

.hinweis { font-size: .97rem; color: var(--ink-soft); background: var(--bg-tint);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.2rem; margin-top: 2rem; max-width: var(--measure); }

/* Bilder / Abbildungen */
figure.fig { margin: 1.8rem 0; max-width: var(--measure); }
figure.fig img { width: 100%; height: auto; display: block; border-radius: var(--radius);
  border: 1px solid var(--line); background: #fff; }
figure.fig figcaption { font-size: .9rem; color: var(--ink-soft); margin-top: .55rem; padding-left: .2rem; }
figure.fig.photo img { border: none; }
/* Warmes Leitbild auf der Startseite */
.lead-media { margin: 0 0 2.5rem; }
.lead-media img { width: 100%; height: auto; display: block; border-radius: 14px; }

/* Aktuelles / Newsliste */
.news-list { list-style: none; margin: 1.5rem 0; padding: 0; display: grid; gap: 1rem; max-width: var(--measure); }
.news-item { border: 1px solid var(--line); border-left: 5px solid var(--green); border-radius: var(--radius); padding: 1rem 1.2rem; background: #fff; }
.news-meta { font-size: .82rem; color: var(--ink-soft); margin: 0 0 .3rem; text-transform: uppercase; letter-spacing: .03em; }
.news-title { margin: 0; font-size: 1.15rem; }
.news-note { margin: .5rem 0 0; color: var(--ink-soft); }
.news-empty { background: var(--bg-tint); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.3rem; color: var(--ink-soft); max-width: var(--measure); }

/* Amsler-Gitter */
.amsler-wrap { max-width: 460px; margin: 1.5rem 0; }
.amsler-svg { width: 100%; height: auto; display: block; border: 1px solid var(--line); background: #fff; border-radius: 4px; }
.amsler-actions { display: flex; gap: .7rem; flex-wrap: wrap; margin-top: .9rem; }
.amsler-hint { font-size: .95rem; color: var(--ink-soft); margin-top: .6rem; }

/* Glossar */
.glossar { margin: 1.5rem 0; max-width: var(--measure); }
.glossar dt { font-weight: 800; color: var(--green-ink); margin-top: 1.1rem; font-size: 1.1rem; }
.glossar dd { margin: .25rem 0 0; }
.glossar dt:target { background: var(--green-soft); padding: .1em .3em; border-radius: 4px; }
@media print {
  body * { visibility: hidden; }
  .amsler-print, .amsler-print * { visibility: visible; }
  .amsler-print { position: absolute; left: 0; top: 0; width: 100%; }
  .amsler-print .no-print { display: none !important; }
  .amsler-print .amsler-wrap { max-width: none; }
  .amsler-print .amsler-svg { width: 16cm; height: 16cm; margin: 1cm auto; border-color: #000; }
  .amsler-print .amsler-print-note { text-align: center; font-size: 12pt; margin-top: .5cm; }
}

/* Quellen */
.quellen { margin-top: 2.5rem; border-top: 2px solid var(--green-line); padding-top: 1rem; }
.quellen ol { padding-left: 1.4rem; font-size: .97rem; }
.quellen a { word-break: break-word; }

/* ============ Startseite ============ */
.hero { background: linear-gradient(160deg, var(--green-soft), #fff 70%); border-radius: 14px; padding: clamp(1.6rem, 4vw, 3rem); margin-bottom: 2.5rem; }
.hero h1 { max-width: 18ch; }
.hero p { font-size: 1.15em; max-width: 60ch; }
.hero .btn { margin-top: .6rem; }

.section-h { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: 2.5rem; }

.card-grid { display: grid; gap: 1.4rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr)); margin: 1.4rem 0; }
.card { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; display: flex; flex-direction: column; box-shadow: var(--shadow); }
.card .card-body { padding: 1.1rem 1.2rem 1.3rem; display: flex; flex-direction: column; gap: .5rem; height: 100%; }
.card h3 { margin: 0; font-size: 1.2rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: 1rem; }
.card .card-link { margin-top: auto; font-weight: 800; color: var(--green-ink); text-decoration: none; }
.card .card-link::after { content: " →"; }
.card .card-link:hover { color: var(--accent-dark); text-decoration: underline; }
.card .thumb { aspect-ratio: 16 / 9; background: var(--green-soft); display: grid; place-items: center; color: var(--green); }
.badge-neu { align-self: flex-start; background: var(--accent); color: #fff; font-size: .8rem; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; padding: .2em .7em; border-radius: 999px; }

.promo { background: var(--green-deep); color: #fff; border-radius: 14px; padding: clamp(1.4rem, 3vw, 2.2rem); margin: 2.5rem 0; }
.promo h2 { color: #fff; margin-top: 0; }
.promo p { color: #eaf3ec; max-width: 60ch; }
.promo .btn-secondary { background: #fff; }

/* ---- Initiative-Block & Fußzeile ------------------------------------- */
.initiative { background: var(--bg-tint); border-top: 1px solid var(--line); padding-block: 1rem; }
.initiative-line { max-width: 80ch; color: var(--ink-soft); font-size: .92rem; margin: 0; }

.site-footer { background: var(--green-deep); color: #eaf3ec; padding-block: 2rem 2.5rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 1.2rem; margin-bottom: 1rem; }
.footer-nav a { color: #fff; font-weight: 700; }
.footer-operator { color: #d6e6dc; font-size: .95rem; margin: 0 0 .5rem; }
.disclaimer { max-width: 80ch; color: #d6e6dc; font-size: .97rem; }
.footer-copy { color: #a9c6b5; font-size: .9rem; margin-bottom: 0; }

/* ---- Responsiv -------------------------------------------------------- */
@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; padding-top: 0; }
  .nav-toggle { display: flex; justify-content: center; }
  .sidebar { position: static; display: none; margin-top: 1rem; }
  .sidebar.open { display: block; }
  .masthead-tools { width: 100%; justify-content: space-between; }
}
@media (max-width: 560px) {
  .btn-contact { display: none; }
  .brand-text { font-size: 1.15rem; }
}