/* Udvidelser i Naturfag: strukturformler, høretest, vægtstang og PhET-links */
.struktur-sektion, .hoer-sektion, .fl-sektion { margin: 26px 0; padding: 20px; border-radius: 20px; background: #f4f8fc; border: 1px solid var(--line, #c9d8e6); }
.struktur-sektion h3, .hoer-sektion h3, .fl-sektion h3 { margin: 4px 0 6px; font-size: 1.25rem; color: var(--navy, #1f3864); }
.struktur-sektion__lead, .hoer-sektion__lead, .fl-sektion__lead { margin: 0 0 14px; font-size: .82rem; line-height: 1.5; color: var(--muted, #5a6b82); max-width: 720px; }
.struktur__fallback, .hoer__fallback, .fl__fallback { font-size: .8rem; color: var(--muted, #5a6b82); padding: 14px; border: 1px dashed var(--line, #c9d8e6); border-radius: 12px; background: #fff; margin: 0; }
.struktur--aktiv .struktur__fallback, .hoer--aktiv .hoer__fallback, .fl--aktiv .fl__fallback { display: none; }

/* strukturformler */
.struktur__chips { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 12px; }
.struktur__chip { display: grid; gap: 1px; text-align: left; padding: 8px 12px; border: 1px solid var(--line, #c9d8e6); background: #fff; border-radius: 11px; color: var(--navy, #1f3864); cursor: pointer; }
.struktur__chip b { font-size: .8rem; }
.struktur__chip small { font-size: .58rem; color: #6b7a90; font-weight: 700; }
.struktur__chip[aria-pressed="true"] { background: var(--navy, #1f3864); border-color: var(--navy, #1f3864); color: #fff; }
.struktur__chip[aria-pressed="true"] small { color: #b8d4ea; }
.struktur__kort { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 16px; align-items: center; }
.struktur__tegning { background: #0d2038; border-radius: 16px; padding: 12px; min-height: 230px; display: grid; place-items: center; color: #dff3ff; font-size: .8rem; }
.struktur__svg { width: 100%; height: auto; max-height: 300px; display: block; }
.struktur__gruppe { margin: 0; font-size: .58rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 900; color: var(--teal, #12a08a); }
.struktur__navn { margin: 3px 0 4px; font-size: 1.1rem; color: var(--navy, #1f3864); }
.struktur__formel { margin: 0 0 8px; font-size: .74rem; font-weight: 800; color: #4f5f76; }
.struktur__forklar { margin: 0; font-size: .8rem; line-height: 1.55; color: #4f5f76; }
.struktur__laes { margin-top: 14px; padding: 12px 15px; border-radius: 12px; background: #fff; border: 1px solid var(--line, #c9d8e6); font-size: .74rem; line-height: 1.5; color: #4f5f76; }
.struktur__laes ul { margin: 6px 0 0; padding-left: 18px; }
.struktur__note { margin: 10px 0 0; font-size: .64rem; color: #8793a5; }
.rejse__struktur { margin: 0; padding: 8px 10px; border: 1px solid var(--line, #c9d8e6); border-radius: 12px; background: #fff; display: grid; gap: 4px; }
.rejse__struktur figcaption { font-size: .58rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 900; color: var(--teal, #12a08a); }
.rejse__struktur .struktur__svg { max-height: 150px; }

/* høretest */
.hoer__rum { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 16px; align-items: start; }
.hoer__kontrol { display: grid; gap: 12px; }
.hoer__profiler { display: flex; flex-wrap: wrap; gap: 6px; }
.hoer__profil { padding: 8px 13px; border: 1px solid var(--line, #c9d8e6); background: #fff; border-radius: 999px; color: var(--navy, #1f3864); font-weight: 800; font-size: .75rem; cursor: pointer; }
.hoer__profil[aria-pressed="true"] { background: var(--navy, #1f3864); border-color: var(--navy, #1f3864); color: #fff; }
.hoer__felt { display: grid; gap: 4px; font-size: .74rem; font-weight: 800; color: var(--navy, #1f3864); }
.hoer__felt > span:first-child { display: flex; justify-content: space-between; }
.hoer__felt output { color: #1f6f60; }
.hoer__felt input { width: 100%; accent-color: #12c4a8; }
.hoer__skala { display: flex; justify-content: space-between; font-size: .6rem; font-weight: 700; color: #8793a5; font-style: normal; }
.hoer__skala i { font-style: normal; }
.hoer__afspil { width: max-content; border: 0; background: var(--teal, #12c4a8); color: #fff; padding: 11px 18px; border-radius: 11px; font-weight: 850; font-size: .82rem; cursor: pointer; }
.hoer__advarsel { margin: 0; font-size: .66rem; line-height: 1.45; color: #8a5a10; }
.hoer__graf { background: #0d2038; border-radius: 16px; padding: 8px; }
.hoer__graf canvas { display: block; width: 100%; height: 230px; }
.hoer__tekst { margin: 12px 0 6px; font-size: .8rem; font-weight: 750; line-height: 1.5; color: var(--navy, #1f3864); min-height: 3em; }
.hoer__pleje { margin: 0; padding: 11px 14px; border-radius: 12px; background: #e8f7f2; font-size: .74rem; line-height: 1.55; color: #1f5f52; }

/* vægtstang */
.fl__rum { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.fl__scene { position: relative; border-radius: 18px; overflow: hidden; background: #0d2038; height: clamp(340px, 42vw, 500px); }
.fl__host.sense3d { position: absolute; inset: 0; aspect-ratio: auto; background: transparent; }
.fl__host canvas { display: block; width: 100%; height: 100%; }
.fl__side { display: grid; gap: 12px; }
.fl__presets { display: flex; gap: 8px; }
.fl__presets button { flex: 1; padding: 10px 12px; border: 1px solid var(--line, #c9d8e6); background: #fff; border-radius: 11px; color: var(--navy, #1f3864); font-weight: 850; font-size: .78rem; cursor: pointer; }
.fl__presets button:hover, .fl__presets button:focus-visible { background: var(--navy, #1f3864); color: #fff; }
.fl__felt { display: grid; gap: 4px; font-size: .74rem; font-weight: 800; color: var(--navy, #1f3864); }
.fl__felt > span:first-child { display: flex; justify-content: space-between; }
.fl__felt output { color: #1f6f60; }
.fl__felt input { width: 100%; accent-color: #12c4a8; }
.fl__skala { display: flex; justify-content: space-between; font-size: .6rem; font-weight: 700; color: #8793a5; }
.fl__skala i { font-style: normal; }
.fl__maaler { display: grid; grid-template-columns: 1fr auto; gap: 6px 10px; align-items: center; font-size: .72rem; font-weight: 800; color: var(--navy, #1f3864); }
.fl__bar { grid-column: 1 / -1; height: 14px; border-radius: 999px; background: #dfe8f2; overflow: hidden; }
.fl__bar i { display: block; height: 100%; width: 0; border-radius: inherit; background: linear-gradient(90deg, #2fd4b6, #e0b563 55%, #ff6a55); transition: width .12s linear; }
.fl__niveau { grid-row: 1; grid-column: 2; padding: 2px 10px; border-radius: 999px; background: #e2f5f2; color: #1f6f60; }
.fl__bar[data-niveau="moderat"] ~ .fl__niveau { background: #fff3d6; color: #8a5a10; }
.fl__bar[data-niveau="høj"] ~ .fl__niveau { background: #ffe1db; color: #a03a26; }
.fl__resultat { margin: 0; min-height: 4.4em; padding: 11px 14px; border-radius: 12px; background: #fff; border: 1px solid var(--line, #c9d8e6); font-size: .78rem; line-height: 1.5; font-weight: 700; color: var(--navy, #1f3864); }
.fl__forklar, .fl__note { margin: 0; font-size: .72rem; line-height: 1.55; color: #4f5f76; }
.fl__note { font-size: .62rem; color: #8793a5; }

/* PhET-links */
.phet-links { margin: 28px 0 6px; padding: 18px 20px; border-radius: 18px; background: #fff; border: 1px solid var(--line, #c9d8e6); }
.phet-links h3 { margin: 3px 0 10px; font-size: 1.05rem; color: var(--navy, #1f3864); }
.phet-links__gitter { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 10px; }
.phet-kort { display: grid; gap: 4px; padding: 12px 14px; border: 1px solid var(--line, #c9d8e6); border-radius: 13px; background: #f8fbfe; color: var(--navy, #1f3864); text-decoration: none; }
.phet-kort:hover, .phet-kort:focus-visible { border-color: var(--teal, #12c4a8); background: #eef9f7; }
.phet-kort strong { font-size: .86rem; }
.phet-kort span:not([aria-hidden]) { font-size: .74rem; line-height: 1.45; color: #4f5f76; }
.phet-links__kilde { margin: 10px 0 0; font-size: .62rem; line-height: 1.5; color: #8793a5; }
.phet-links__kilde a { color: #55657c; }

@media (max-width: 900px) {
  .struktur__kort, .hoer__rum, .fl__rum { grid-template-columns: 1fr; }
  .fl__scene { height: clamp(300px, 80vw, 420px); }
}
.rejse__fakta:not(:has(> :not([hidden]))) { display: none; }