/* Aardehoek, onderdelen */
.logo-ster{color:var(--nevel)}
.aarde-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;min-height:auto;padding:90px clamp(16px,5vw,48px) 60px;max-width:1240px;margin:0 auto;
  background:radial-gradient(ellipse at 75% 40%,rgba(79,179,200,.18),transparent 55%),radial-gradient(ellipse at 10% 90%,rgba(216,166,87,.12),transparent 50%)}
.aarde-hero .hero-in{text-align:left}
.aarde-hero .lead{margin-left:0}
.aarde-hero .knoppen{justify-content:flex-start}
.onder-hero{grid-column:1/-1;margin-top:10px;text-align:center}
.vers.links{text-align:left;margin:32px 0 0;max-width:720px}
.globe-wrap{margin:0;display:flex;flex-direction:column;align-items:center}
.globe{--d:min(400px,80vw);width:var(--d);height:var(--d);border-radius:50%;background-color:#1b4f6b;background-size:auto 100%;background-repeat:repeat-x;
  box-shadow:inset -40px -30px 80px rgba(0,0,0,.75),inset 12px 10px 40px rgba(255,255,255,.18),0 0 90px rgba(79,179,200,.35);animation:draai 60s linear infinite}
.globe.zonder{background:radial-gradient(circle at 35% 30%,#5fb6d1,#1b4f6b 60%,#0b2a3a)}
@keyframes draai{from{background-position:0 0}to{background-position:calc(var(--d) * -2) 0}}
.globe-wrap .credit{text-align:center;max-width:400px}
@media(max-width:860px){.aarde-hero{grid-template-columns:1fr;text-align:center}.aarde-hero .hero-in{text-align:center}.aarde-hero .knoppen{justify-content:center}.globe{--d:min(300px,76vw)}}

/* doorsnede */
.doorsnede{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);align-items:center}
.doorsnede-beeld svg{width:100%;max-width:440px;display:block;margin:0 auto;filter:drop-shadow(0 0 40px rgba(240,138,60,.25))}
.doorsnede-beeld circle[data-laag]{transition:opacity .4s}
.laag-feiten{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:14px 0}
.laag-feiten div{padding:12px;border-radius:12px;background:var(--diep);border:1px solid var(--rand)}
.laag-feiten dt{font-size:.75rem;color:var(--zacht)}
.laag-feiten dd{margin:2px 0 0;font-weight:600;font-size:.92rem}
.weetje-klein{margin-top:16px;padding:12px 16px;border-left:3px solid var(--goud);background:rgba(216,166,87,.08);border-radius:0 10px 10px 0;font-size:.92rem}
@media(max-width:820px){.doorsnede{grid-template-columns:1fr}.laag-feiten{grid-template-columns:1fr 1fr}}

/* zwaartekracht */
.zk{display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:start}
.zk-invoer{padding:22px;border-radius:var(--radius);background:var(--diep);border:1px solid var(--rand)}
.zk-invoer label{display:block;font-weight:600;margin:6px 0}
.zk-rij{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.zk-rij input{width:110px;padding:10px 14px;border-radius:10px;border:1px solid var(--rand);background:var(--nacht);color:var(--tekst);font:600 1.1rem var(--sans)}
.zk-uit{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.zk-kaart{padding:16px;border-radius:14px;background:var(--diep);border:1px solid rgba(216,166,87,.15);display:flex;flex-direction:column;gap:2px}
.zk-kaart.thuis{border-color:var(--goud)}
.zk-e{font-size:1.8rem}
.zk-g,.zk-s{font-family:var(--serif);font-size:1.5rem;color:var(--goud);margin-top:6px}
.zk-kaart small{color:var(--zacht);font-size:.75rem}
.zk-kaart em{font-size:.72rem;color:var(--zacht);margin-top:6px}
@media(max-width:720px){.zk{grid-template-columns:1fr}}
.valproef{display:grid;grid-template-columns:1fr 280px;gap:24px;align-items:center;margin-top:28px;padding:24px;border-radius:var(--radius);border:1px dashed var(--rand)}
.knoppen.links{justify-content:flex-start}
.valbak{position:relative;height:220px;border-radius:14px;background:linear-gradient(#123a3f,#0f2019);overflow:hidden}
.valbak span{position:absolute;top:10px;font-size:2.2rem}
.valbak .hamer{left:30%}.valbak .veer{left:60%}
.valbak .vloer{position:absolute;bottom:0;left:0;right:0;height:14px;background:#5c4a35}
.valbak.aarde .hamer{animation:valH .6s cubic-bezier(.55,0,1,.45) forwards}
.valbak.aarde .veer{animation:valV 3.2s ease-in-out forwards}
.valbak.maan{background:linear-gradient(#05070d,#1a1d26)}
.valbak.maan .vloer{background:#8d8f96}
.valbak.maan .hamer,.valbak.maan .veer{animation:valH 1.4s cubic-bezier(.55,0,1,.45) forwards}
@keyframes valH{to{top:162px}}
@keyframes valV{25%{top:50px;transform:translateX(-18px) rotate(-20deg)}50%{top:95px;transform:translateX(14px) rotate(15deg)}75%{top:130px;transform:translateX(-10px) rotate(-10deg)}to{top:162px;transform:none}}
@media(max-width:720px){.valproef{grid-template-columns:1fr}}

/* lucht */
.lucht{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.lagen-lucht{display:flex;flex-direction:column;border-radius:var(--radius);overflow:hidden;border:1px solid var(--rand)}
.luchtlaag{all:unset;cursor:pointer;display:block;padding:16px 20px;color:var(--tekst);border-bottom:1px solid rgba(255,255,255,.06)}
.luchtlaag:focus-visible{outline:2px solid var(--goud);outline-offset:-2px}
.luchtlaag strong{font-family:var(--serif);font-size:1.1rem;margin-right:10px}
.luchtlaag small{color:var(--zacht)}
.laag-tekst{display:none;margin-top:6px;font-size:.92rem;color:var(--tekst)}
.luchtlaag.open .laag-tekst{display:block}
.l0{background:#06101a}.l1{background:#0b2233}.l2{background:#12344a}.l3{background:#1b4c64}.l4{background:#2a6d82;padding-top:24px;padding-bottom:24px}
.samenstelling{display:flex;height:34px;border-radius:10px;overflow:hidden;margin:12px 0}
.legenda{list-style:none;padding:0;margin:0 0 20px;display:grid;gap:6px;font-size:.92rem}
.legenda i{display:inline-block;width:12px;height:12px;border-radius:50%;margin-right:8px;background:#666;vertical-align:-1px}
.zuurstof{padding:20px;border-radius:var(--radius);background:var(--diep);border:1px solid var(--rand)}
.zuurstof p{color:var(--zacht)}
@media(max-width:820px){.lucht{grid-template-columns:1fr}}

/* water */
.kringloop svg{width:100%;height:auto;display:block;border-radius:18px}
.kringloop .wolk{animation:drijf 8s ease-in-out infinite alternate}
@keyframes drijf{to{transform:translateX(-30px)}}
.kringloop .damp path{animation:stijg 3s ease-in infinite;opacity:0}
.kringloop .damp path:nth-child(2){animation-delay:1s}.kringloop .damp path:nth-child(3){animation-delay:2s}
@keyframes stijg{0%{transform:translateY(0);opacity:0}30%{opacity:.9}100%{transform:translateY(-70px);opacity:0}}
.kringloop .regen line{animation:val 1s linear infinite}
.kringloop .regen line:nth-child(2){animation-delay:.3s}.kringloop .regen line:nth-child(3){animation-delay:.6s}.kringloop .regen line:nth-child(4){animation-delay:.15s}
@keyframes val{from{transform:translateY(0);opacity:1}to{transform:translateY(120px);opacity:0}}
.kringloop .rivier{stroke-dasharray:8 8;animation:stroom 1.5s linear infinite}
@keyframes stroom{to{stroke-dashoffset:-16}}
.water-weetjes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}
.water-weetjes>div{padding:22px;border-radius:var(--radius);background:var(--diep);border:1px solid var(--rand)}
.water-weetjes p{color:var(--zacht);font-size:.93rem;margin:0}
.waterbalk{display:flex;height:30px;border-radius:8px;overflow:hidden;margin:10px 0 14px;font:600 .8rem var(--sans)}
.waterbalk .zout{background:#2c7a8c;display:flex;align-items:center;padding-left:10px}
.waterbalk .zoet{background:#bfe6ef}
.druppels{display:flex;align-items:flex-end;gap:18px;height:60px;margin:6px 0 12px}
.druppels span{background:#7fd0e3;display:block}
.d1{width:14px;height:14px;border-radius:50%}
.d2{width:28px;height:24px;border-radius:50% 50% 45% 45%}
.d3{width:42px;height:30px;border-radius:50% 50% 30% 30%/60% 60% 30% 30%}
@media(max-width:900px){.water-weetjes{grid-template-columns:1fr}}

/* aardbevingen */
.kaart-wereld{position:relative}
.kaart-wereld svg{width:100%;height:auto;display:block;border-radius:14px;border:1px solid var(--rand)}
.kaart-wereld circle{cursor:pointer}
.kaart-tip{position:absolute;width:220px;padding:10px 12px;border-radius:10px;background:var(--vlak);border:1px solid var(--goud);font-size:.85rem;display:flex;flex-direction:column;gap:2px;pointer-events:none;z-index:2}
.kaart-tip small{color:var(--zacht)}
.bevingen-onder{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:24px}
.magschaal{display:grid;gap:6px;margin:12px 0}
.mag-rij{display:grid;grid-template-columns:24px 1fr;gap:4px 10px;align-items:center}
.mag-nr{font-family:var(--serif);color:var(--goud);font-size:1.1rem}
.mag-balk{height:8px;border-radius:4px;background:linear-gradient(90deg,var(--goud),#ef8f7a)}
.mag-rij small{grid-column:2;color:var(--zacht);font-size:.8rem}
.bevinglijst{list-style:none;padding:0;margin:10px 0;display:grid;gap:8px}
.bevinglijst li{display:grid;grid-template-columns:44px 1fr auto;gap:10px;align-items:center;padding:8px 10px;border-radius:10px;background:var(--diep);font-size:.9rem}
.bevinglijst a{color:var(--tekst);text-decoration:none}
.bevinglijst a:hover{color:var(--goud)}
.bevinglijst small{color:var(--zacht);white-space:nowrap}
.mag-badge{display:grid;place-items:center;height:30px;border-radius:8px;background:rgba(216,166,87,.18);color:var(--goud);font-weight:700}
.mag-badge.zwaar{background:#ef8f7a;color:#08130f}
@media(max-width:820px){.bevingen-onder{grid-template-columns:1fr}}

/* banner en foto's */
#grondstoffen{padding-top:20px;padding-bottom:20px}
.nieuwbanner{display:flex;align-items:center;gap:20px;padding:26px 28px;border-radius:var(--radius);border:1px solid var(--goud);background:linear-gradient(120deg,rgba(216,166,87,.18),rgba(79,179,200,.12));color:var(--tekst);text-decoration:none;transition:transform .2s}
.nieuwbanner:hover{transform:translateY(-3px)}
.nb-icoon{font-size:2.6rem}
.nieuwbanner strong{display:block;font-family:var(--serif);font-size:1.4rem}
.nieuwbanner small{color:var(--zacht);font-size:.95rem}
.nb-pijl{margin-left:auto;font-size:1.6rem;color:var(--goud)}
.onderwerpen{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:99px;border:1px solid var(--rand);background:rgba(255,255,255,.03);color:var(--zacht);font:600 .88rem var(--sans);cursor:pointer}
.chip:hover{color:var(--tekst)}
.chip.actief{background:var(--goud);color:var(--nacht);border-color:var(--goud)}
.atlas-grid{columns:4 230px;column-gap:14px;margin-top:10px}
.atlas-item{break-inside:avoid;margin:0 0 14px;border-radius:14px;overflow:hidden;background:var(--diep);border:1px solid rgba(216,166,87,.12);cursor:zoom-in;position:relative;display:block;width:100%;padding:0;color:inherit;font:inherit;text-align:left}
.atlas-item img{width:100%;height:auto;min-height:100px;background:var(--vlak);transition:transform .6s}
.atlas-item:hover img{transform:scale(1.04)}
.atlas-item .onder{position:absolute;inset:auto 0 0 0;padding:28px 12px 10px;background:linear-gradient(transparent,rgba(4,10,8,.92));font-size:.82rem;line-height:1.35;opacity:0;transition:opacity .3s}
.atlas-item:hover .onder,.atlas-item:focus-visible .onder{opacity:1}
@media(hover:none){.atlas-item .onder{opacity:1}}
.meer-wrap{text-align:center;margin-top:20px}
.lb-datum{font-size:.85rem}
.lb-besch{font-size:.88rem;max-width:760px;margin:6px auto!important;max-height:7.5em;overflow:auto;text-align:left}
.kaart-tip[hidden]{display:none}