/* Mathe360.de — eigenes Designsystem (kein Framework, keine externen Schriften)
   Layout: eine Spalte. Kopfleiste und Hero als dunkles Band; darunter helle Flächen.
   Grundschule (Klasse 1–4) in Indigo, weiterführende Schule (5–10) in Petrol. */
:root{
  --bg:#edf1fa; --surface:#ffffff; --sunken:#f4f6fc; --ink:#0f1730; --muted:#4a5675; --line:#d3dbec; --line-strong:#b9c5df;
  --brand:#086f7e; --brand-f:#0a7f90; --brand-deep:#0b3a4a; --brand-soft:#dcf1f3;
  --accent:#ffc62e; --on-accent:#231a00;
  --on-deep:#ffffff; --on-deep-muted:rgba(255,255,255,.84); --deep-line:rgba(255,255,255,.22); --deep-grid:rgba(255,255,255,.055);
  /* Stufenfarben: c = Text/Link, f = Fläche (in beiden Themen gleich), s = heller Grund, d = Hero */
  --gs:#4a3ec0; --gs-f:#5244d0; --gs-s:#ebe8ff; --gs-d:#241d6b;
  --sek:#086f7e; --sek-f:#0a7f90; --sek-s:#dcf1f3; --sek-d:#0b3a4a;
  --ok:#0b8a5a; --mid:#b26b00; --hard:#c3301f;
  --font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --r:12px; --wrap:1000px;
  --shadow:0 1px 2px rgba(15,23,48,.06),0 8px 24px rgba(15,23,48,.09);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0a0f1e; --surface:#121a2e; --sunken:#0e1527; --ink:#eaeef8; --muted:#a6b1cd; --line:#26314f; --line-strong:#36436a;
    --brand:#6fd6e2; --brand-deep:#08303d; --brand-soft:#0f3340;
    --gs:#b3a9ff; --gs-s:#231f4d; --gs-d:#1c1657;
    --sek:#6fd6e2; --sek-s:#0f3340; --sek-d:#08303d;
    --ok:#5ad3a0; --mid:#ffb648; --hard:#ff9184;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.35);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0a0f1e; --surface:#121a2e; --sunken:#0e1527; --ink:#eaeef8; --muted:#a6b1cd; --line:#26314f; --line-strong:#36436a;
  --brand:#6fd6e2; --brand-deep:#08303d; --brand-soft:#0f3340;
  --gs:#b3a9ff; --gs-s:#231f4d; --gs-d:#1c1657;
  --sek:#6fd6e2; --sek-s:#0f3340; --sek-d:#08303d;
  --ok:#5ad3a0; --mid:#ffb648; --hard:#ff9184;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.35);
  color-scheme:dark;
}

/* ders bağlamı */
body{--c:var(--brand);--cf:var(--brand-f);--cs:var(--brand-soft);--cd:var(--brand-deep)}
.k-gs{--c:var(--gs);--cf:var(--gs-f);--cs:var(--gs-s);--cd:var(--gs-d)}
.k-sek{--c:var(--sek);--cf:var(--sek-f);--cs:var(--sek-s);--cd:var(--sek-d)}

*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.6 var(--font)}
img,svg{max-width:100%}
a{color:var(--c);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
h1,h2{font-family:var(--font);line-height:1.15;text-wrap:balance;margin:0;letter-spacing:-.015em;font-weight:800}
h2{font-size:clamp(1.35rem,1.15rem + .8vw,1.7rem)}
p{margin:0}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--accent);color:var(--on-accent);padding:8px 14px;border-radius:6px;z-index:50}
.skip:focus{left:max(16px,env(safe-area-inset-left,0px))}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.ico{width:20px;height:20px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- Üst bar ---------- */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:30;background:var(--cd)}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--cd);color:var(--on-deep);border-bottom:1px solid var(--deep-line)}
.top-in{display:flex;align-items:center;gap:16px;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--on-deep);font-weight:800;font-size:1.2rem;line-height:1;letter-spacing:-.02em;flex-shrink:0}
.logo b{font-weight:800;color:var(--accent)}
.logo i{font-style:normal;font-weight:700;color:var(--on-deep-muted)}
.logo-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:var(--accent);color:var(--on-accent);font-size:.72rem;font-weight:900;letter-spacing:-.04em;flex-shrink:0;
  box-shadow:inset 0 0 0 3px var(--accent),inset 0 0 0 5px rgba(35,26,0,.55)}

/* Klassen-Menü: Desktop 1–10 nebeneinander, Telefon als Raster hinter "Klassen" */
.gnav{margin-left:auto}
.gnav-btn{display:none;align-items:center;gap:10px;height:44px;padding:0 14px;border:1px solid var(--deep-line);border-radius:10px;background:none;color:var(--on-deep);font:700 1rem var(--font);cursor:pointer}
.gnav-btn .bars{width:18px;height:12px;background:linear-gradient(currentColor,currentColor) 0 0/100% 2px no-repeat,linear-gradient(currentColor,currentColor) 0 50%/100% 2px no-repeat,linear-gradient(currentColor,currentColor) 0 100%/100% 2px no-repeat}
.gnav-panel{display:flex;align-items:center;gap:8px}
.gnav-label{font-size:.85rem;font-weight:700;color:var(--on-deep-muted);text-transform:uppercase;letter-spacing:.08em}
.gnav-list{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.gnav-list a{display:grid;place-items:center;min-width:38px;height:38px;padding:0 6px;border-radius:9px;color:var(--on-deep);text-decoration:none;font-weight:800;font-size:1rem;font-variant-numeric:tabular-nums}
.gnav-list a:hover{background:rgba(255,255,255,.14)}
.gnav-list a[aria-current]{background:var(--accent);color:var(--on-accent)}
.gnav-k{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- Hero ---------- */
.hero{background:
  repeating-linear-gradient(0deg,transparent 0 27px,var(--deep-grid) 27px 28px),
  repeating-linear-gradient(90deg,transparent 0 27px,var(--deep-grid) 27px 28px),var(--cd);
  color:var(--on-deep);position:relative}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:6px;background:var(--accent)}
.hero-in{padding-block:22px 46px;display:grid;gap:16px}
.hero h1{font-size:clamp(1.2rem,.81rem + 1.74vw,1.95rem);line-height:1.18;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero .lede{font-size:clamp(.9rem,.85rem + .28vw,.98rem);line-height:1.6;color:var(--on-deep-muted)}
.hero-home .hero-in{padding-block:56px 60px;gap:20px}
.pills{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.pills li,.pills a{display:inline-flex;align-items:center;gap:6px;min-height:34px;padding:4px 12px;border:1px solid var(--deep-line);border-radius:99px;font-size:.9rem;color:var(--on-deep);text-decoration:none;background:rgba(255,255,255,.06)}
.pills a:hover{background:rgba(255,255,255,.16)}
.pills li.bare{padding:0;border:0;background:none;min-height:0}
.pills strong{font-weight:700}
.pills .hi{background:var(--accent);border-color:var(--accent);color:var(--on-accent);font-weight:700}
.jump{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.jump>span{font-size:.9rem;color:var(--on-deep-muted)}
.cta{display:flex;flex-wrap:wrap;gap:10px}
.cta a{display:inline-flex;align-items:center;gap:8px;min-height:50px;padding:0 22px;border-radius:var(--r);font-weight:700;text-decoration:none;background:var(--accent);color:var(--on-accent)}
.cta a.ghost{background:none;color:var(--on-deep);box-shadow:inset 0 0 0 1px var(--deep-line)}
.cta a:hover{filter:brightness(1.05)}

/* Breadcrumb */
.crumbs{font-size:.9rem}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 0}
.crumbs li{display:flex;align-items:center;min-width:0}
.crumbs li+li::before{content:"/";margin:0 9px;color:var(--deep-line)}
.crumbs a{color:var(--on-deep-muted);text-decoration:none}
.crumbs a:hover{color:var(--on-deep);text-decoration:underline}
.crumbs [aria-current]{color:var(--on-deep);font-weight:700}

/* ---------- Gövde ---------- */
.main{display:grid;gap:48px;padding-block:40px 60px}
.block{display:grid;gap:18px;align-content:start}
.block-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px 18px}
.block-head p{color:var(--muted)}
.block-head a{font-weight:700}
.prose{display:grid;gap:14px;max-width:68ch}
.note{font-size:.92rem;color:var(--muted)}
/* Dikkat çeken bölüm başlığı */
.h-mark{display:grid;gap:10px}
.h-mark::after{content:"";width:56px;height:5px;border-radius:3px;background:var(--accent)}

/* Klassen-Raster (Startseite und Seitenende) */
.stufen{display:grid;grid-template-columns:4fr 6fr;gap:16px}
.stufe{background:var(--surface);border:1px solid var(--line);border-top:5px solid var(--cf);border-radius:var(--r);padding:16px;display:grid;gap:12px;align-content:start}
.stufe-h{font-weight:800;font-size:1.05rem;color:var(--c)}
.klassen{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:8px}
.klassen a{display:grid;justify-items:center;gap:2px;padding:12px 6px 10px;border-radius:10px;background:var(--cs);color:var(--c);text-decoration:none;transition:background .15s,transform .15s}
.klassen a:hover{background:var(--cf);color:#fff;transform:translateY(-2px)}
.kl-n{font-size:2rem;font-weight:900;line-height:1}
.kl-t{font-size:.8rem;font-weight:700}
.klassen a[aria-current]{background:var(--cf);color:#fff;box-shadow:0 0 0 3px var(--accent)}

/* Çalışma kağıdı kartları (ayrık) */
.cards{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.item{display:block;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-left:6px solid var(--cf);border-radius:var(--r);text-decoration:none;color:var(--ink);transition:box-shadow .15s,transform .15s}
.item:hover{box-shadow:var(--shadow);transform:translateY(-1px)}
.item-t{display:block;font-weight:700;font-size:1.08rem;line-height:1.3;color:var(--c)}
.item:hover .item-t{text-decoration:underline}
.item-d{display:block;color:var(--muted);font-size:.95rem;margin-top:4px}
.item-m{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.88rem;color:var(--muted);margin-top:8px}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;font-weight:700;padding:3px 10px;border-radius:99px;background:var(--cs);color:var(--c);white-space:nowrap}
.tag .ico{width:14px;height:14px}
.lvl{font-weight:700}
.lvl-leicht{color:var(--ok)} .lvl-mittel{color:var(--mid)} .lvl-schwer{color:var(--hard)}

/* Adımlar */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;counter-reset:s}
.steps li{counter-increment:s;display:grid;gap:6px;align-content:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.steps li::before{content:counter(s);display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--accent);color:var(--on-accent);font-weight:800;font-size:1.1rem}
.steps strong{font-size:1.1rem}
.steps p{color:var(--muted)}

/* Neden biz */
.why{display:grid;gap:28px;padding-block:8px}
.why-head{display:grid;gap:10px;justify-items:center;text-align:center}
.eyebrow{font-size:.85rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--mid)}
.why-head h2{font-size:clamp(1.8rem,1.4rem + 1.6vw,2.5rem)}
.why-head p{color:var(--muted);font-size:1.1rem}
.why-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.why-grid li{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:30px 22px;display:grid;gap:10px;justify-items:center;text-align:center;align-content:start}
.why-ic{width:64px;height:64px;border-radius:16px;background:var(--brand-deep);display:grid;place-items:center;margin-bottom:8px}
.why-ic .ico{width:30px;height:30px;stroke:var(--accent);stroke-width:2}
.why-grid strong{font-size:1.12rem;font-weight:800}
.why-grid p{color:var(--muted);font-size:.98rem}

/* ---------- Ünite ve konular ---------- */
.units{display:grid;gap:22px}
.unit{border-radius:var(--r);overflow:hidden;background:var(--surface);border:1px solid var(--line);scroll-margin-top:84px}
.unit-h{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px;margin:0;padding:15px 18px;background:var(--cf);color:#fff;font-size:1.2rem;font-weight:600;line-height:1.25;letter-spacing:-.01em}
.unit-h .sep{opacity:.55;font-weight:400}
.unit-h .cnt{margin-left:auto;font-weight:700;font-size:.85rem;opacity:.9;letter-spacing:0}
.topics{list-style:none;margin:0;padding:6px 0}
.topics li+li{border-top:1px dashed var(--line)}
.topics a{display:flex;justify-content:space-between;align-items:center;gap:14px;min-height:50px;padding:10px 18px 10px 40px;text-decoration:none;color:var(--c);font-weight:600;position:relative}
.topics a::before{content:"";position:absolute;left:20px;top:50%;width:8px;height:8px;margin-top:-4px;border-radius:2px;background:var(--cf)}
.topics a:hover{background:var(--cs)}
.topics a:hover .t{text-decoration:underline}
.topics a[aria-current]{background:var(--cs)}
.topics a[aria-current] .t::after{content:"Aktuelles Thema";margin-left:10px;font-size:.75rem;padding:2px 8px;border-radius:99px;background:var(--accent);color:var(--on-accent);vertical-align:2px}
.topics .t-not{display:inline-flex;vertical-align:-3px;margin-left:6px;color:var(--mid)}
.topics .t-not .ico{width:16px;height:16px}
.topics .n{flex-shrink:0;font-size:.85rem;font-weight:400;color:var(--muted);font-variant-numeric:tabular-nums}

/* Ünite numaralı listesi */
.ulist{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.ulist a{display:flex;align-items:center;gap:14px;min-height:62px;padding:10px 16px 10px 10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--c);font-weight:700;line-height:1.3}
.ulist a:hover{border-color:var(--cf);box-shadow:var(--shadow)}
.ulist b{display:grid;place-items:center;flex-shrink:0;width:42px;height:42px;border-radius:10px;background:var(--cs);color:var(--c);font-size:1.25rem;font-weight:800}
.ulist small{display:block;font-size:.78rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}

/* ---------- Arbeitsblatt: Vorschau aller Seiten ---------- */
.ws{display:grid;grid-template-columns:minmax(0,430px) minmax(0,1fr);gap:22px 32px;align-items:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;scroll-margin-top:84px}
.ws-fig{margin:0;min-width:0}
.gal{display:grid;gap:12px;min-width:0}
.gal-buehne{position:relative;padding:18px;border-radius:10px;background:linear-gradient(160deg,var(--cs),color-mix(in srgb,var(--cs) 55%,var(--surface)))}
.gal-bild{position:relative;display:block;border-radius:3px;background:#fff;box-shadow:0 0 0 1px rgba(15,23,48,.12),0 14px 30px rgba(15,23,48,.22);cursor:zoom-in;overflow:hidden}
.gal-bild img{display:block;width:100%;height:auto;aspect-ratio:1240/1754;object-fit:contain;background:#fff}
.gal-zoom{position:absolute;right:28px;bottom:28px;display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:rgba(15,23,48,.72);color:#fff;pointer-events:none}
.gal-zoom .ico{width:20px;height:20px}
.gal-lupe{position:absolute;width:190px;height:190px;border-radius:50%;pointer-events:none;background-color:#fff;background-repeat:no-repeat;
  box-shadow:0 0 0 3px #fff,0 0 0 5px var(--cf),0 10px 30px rgba(0,0,0,.35);z-index:2}
.gal-pfeil{position:absolute;top:50%;transform:translateY(-50%);display:grid;place-items:center;width:44px;height:44px;border-radius:50%;border:0;background:var(--surface);color:var(--c);box-shadow:var(--shadow);cursor:pointer;z-index:3}
.gal-pfeil:hover{background:var(--cf);color:#fff}
.gal-prev{left:4px} .gal-next{right:4px}
.gal-zahl{position:absolute;left:28px;bottom:28px;padding:4px 10px;border-radius:99px;background:rgba(15,23,48,.72);color:#fff;font-size:.82rem;font-weight:700;font-variant-numeric:tabular-nums;pointer-events:none}
.gal-thumbs{list-style:none;margin:0;padding:4px 2px 6px;display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:thin}
.gal-thumbs li{flex:0 0 74px;scroll-snap-align:start}
.gal-thumbs a{display:block;border-radius:6px;padding:3px;background:var(--sunken);box-shadow:inset 0 0 0 1px var(--line)}
.gal-thumbs a[aria-current]{box-shadow:inset 0 0 0 3px var(--cf)}
.gal-thumbs img{display:block;width:100%;height:auto;aspect-ratio:400/566;border-radius:3px;background:#fff}
.ws-yok{display:grid;place-items:center;align-content:center;gap:10px;aspect-ratio:1240/1754;max-width:100%;border:1px dashed var(--line-strong);border-radius:10px;background:var(--sunken);color:var(--muted);font-size:.95rem;text-align:center;padding:12px}
.ws-yok .ico{width:40px;height:40px;stroke-width:1.5}

/* Vollbild */
.lb{position:fixed;inset:0;width:100%;height:100%;max-width:none;max-height:none;margin:0;padding:0;border:0;background:rgba(8,12,24,.94);color:#fff;overflow:hidden}
.lb[open]{display:grid;grid-template-rows:auto minmax(0,1fr)}
.lb::backdrop{background:rgba(8,12,24,.94)}
.lb-offen{overflow:hidden}
.lb-kopf{display:flex;align-items:center;gap:12px;padding:10px max(16px,env(safe-area-inset-right,0px)) 10px max(16px,env(safe-area-inset-left,0px));border-bottom:1px solid rgba(255,255,255,.12)}
.lb-titel{flex:1;min-width:0;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lb-zahl{font-size:.9rem;color:rgba(255,255,255,.75);font-variant-numeric:tabular-nums;white-space:nowrap}
.lb-knopf{display:inline-grid;place-items:center;min-width:44px;height:44px;padding:0 12px;border-radius:10px;border:1px solid rgba(255,255,255,.25);background:none;color:#fff;font:700 .95rem var(--font);cursor:pointer}
.lb-knopf:hover,.lb-knopf[aria-pressed="true"]{background:rgba(255,255,255,.14)}
.lb-flaeche{overflow:auto;display:grid;place-items:center;padding:16px;overscroll-behavior:contain}
.lb-flaeche img{display:block;max-width:100%;max-height:calc(100dvh - 112px);width:auto;height:auto;background:#fff;box-shadow:0 10px 40px rgba(0,0,0,.5);cursor:zoom-in}
.lb.gross .lb-flaeche{place-items:start center}
.lb.gross .lb-flaeche img{max-width:none;max-height:none;width:min(1240px,180vw);cursor:zoom-out}
.lb-pfeil{position:absolute;top:50%;display:grid;place-items:center;width:52px;height:52px;border-radius:50%;border:0;background:rgba(255,255,255,.14);color:#fff;cursor:pointer}
.lb-pfeil:hover{background:rgba(255,255,255,.28)}
.lb-prev{left:max(12px,env(safe-area-inset-left,0px))} .lb-next{right:max(12px,env(safe-area-inset-right,0px))}

.ws-body{display:grid;gap:14px;align-content:start;min-width:0}
.ws-body h2 small{display:block;font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--c);margin-bottom:6px}
.ws-meta{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:.92rem;color:var(--muted)}
.ws-body ul{margin:0;padding-left:1.2em;display:grid;gap:6px}
.ws-body ul li::marker{color:var(--cf)}
.actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:4px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 20px;border-radius:var(--r);border:1px solid var(--line-strong);background:var(--surface);color:var(--c);font:700 1rem var(--font);text-decoration:none;cursor:pointer}
.btn:hover{border-color:var(--cf)}
.btn-dl{background:var(--cf);border-color:var(--cf);color:#fff}
.btn-dl:hover{color:#fff;filter:brightness(1.08)}
.btn .ico{width:18px;height:18px}

/* Lehrplan-Hinweis */
.lp-hinweis{display:flex;gap:12px;align-items:flex-start;padding:14px 18px;border-radius:var(--r);background:color-mix(in srgb,var(--mid) 12%,var(--surface));border:1px solid color-mix(in srgb,var(--mid) 35%,transparent);color:var(--ink)}
.lp-hinweis .ico{color:var(--mid);margin-top:2px;width:22px;height:22px}
.lp-legende{display:flex;gap:8px;align-items:center}
.lp-legende .ico{color:var(--mid);width:16px;height:16px}

/* Lernziele */
.goals{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.goals li{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-left:5px solid var(--cf);border-radius:var(--r)}
.goals .ico{color:var(--ok);margin-top:2px;stroke-width:2.6}

/* Paylaş */
.share{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:grid;gap:12px}
.share h2{font-size:1.15rem}
.share-row{display:flex;flex-wrap:wrap;gap:8px}
.sh{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 16px;border-radius:99px;border:0;font:700 .95rem var(--font);text-decoration:none;cursor:pointer;color:#fff;background:var(--sh)}
.sh:hover{filter:brightness(1.1)}
.sh::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor;opacity:.75}
.sh-mail{--sh:#4a5675} .sh-wa{--sh:#128c4a} .sh-fb{--sh:#1b5fd9} .sh-x{--sh:#14171c} .sh-tg{--sh:#1f88c4} .sh-pin{--sh:#c8102e} .sh-in{--sh:#0a66c2}
.sh-copy,.sh-native{--sh:var(--surface);color:var(--c);box-shadow:inset 0 0 0 1px var(--line-strong)}
.sh-copy:hover,.sh-native:hover{box-shadow:inset 0 0 0 2px var(--cf)}

/* ---------- Sayfa sonu: üst seviyelere doğru ---------- */
.ilgili{border-top:2px solid var(--line)}
.more{display:grid;gap:56px;padding-block:44px 64px}

/* ---------- Alt bilgi ---------- */
.foot{background:var(--brand-deep);color:var(--on-deep)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px;padding-block:40px 28px}
.foot ul.foot-klassen{grid-template-columns:repeat(2,max-content);gap:2px 28px}
.link-btn{background:none;border:0;padding:5px 0;color:var(--on-deep);font:inherit;cursor:pointer;text-align:left}
.link-btn:hover{text-decoration:underline}
.foot-h{font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--on-deep-muted);margin-bottom:10px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.foot a{color:var(--on-deep);text-decoration:none;display:inline-block;padding:5px 0}
.foot a:hover{text-decoration:underline}
.foot .logo{display:inline-flex;padding:0}
.foot .logo:hover{text-decoration:none}
.foot p.about{color:var(--on-deep-muted);max-width:42ch;margin-top:12px}
.foot-bottom{border-top:1px solid var(--deep-line);padding-block:16px;color:var(--on-deep-muted);font-size:.86rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px}

.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:12px 18px;border-radius:var(--r);font-size:.95rem;z-index:40;max-width:calc(100% - 32px);box-shadow:var(--shadow)}

/* ---------- Duyarlı ---------- */
@media (max-width:1000px){
  .gnav-btn{display:inline-flex}
  .js .gnav-panel{display:none}
  .gnav.open .gnav-panel{display:block}
  .gnav-panel{position:absolute;left:0;right:0;top:100%;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    padding:14px max(16px,env(safe-area-inset-right,0px)) 18px max(16px,env(safe-area-inset-left,0px))}
  .gnav-label{display:none}
  .gnav-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}
  .gnav-list a{height:auto;min-height:56px;display:grid;align-content:center;gap:0;color:var(--brand);background:var(--brand-soft);font-size:1.3rem;line-height:1.1}
  .gnav-k{position:static;width:auto;height:auto;clip:auto;font-size:.72rem;font-weight:700}
  .gnav-list a[aria-current]{background:var(--accent);color:var(--on-accent)}
  .stufen{grid-template-columns:minmax(0,1fr)}
  .ws{grid-template-columns:minmax(0,340px) minmax(0,1fr)}
  .why-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:720px){
  .steps{grid-template-columns:minmax(0,1fr)}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .hero-in{padding-block:18px 36px}
  .hero-home .hero-in{padding-block:36px 42px}
  .ws{grid-template-columns:minmax(0,1fr);padding:14px}
  .ws-fig{max-width:460px;width:100%;justify-self:center}
  .gal-buehne{padding:12px}
  .gal-zoom{right:20px;bottom:20px} .gal-zahl{left:20px;bottom:20px}
  .unit-h .cnt{margin-left:0;flex-basis:100%}
  .ulist{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:520px){
  .why-grid{grid-template-columns:minmax(0,1fr)}
  .lb-pfeil{top:auto;bottom:16px;width:48px;height:48px}
  .topics a{padding-left:34px}
  .topics a::before{left:16px}
}

/* ---------- Yazdırma ---------- */
@media print{
  .top,.foot,.actions,.share,.ilgili,.yorumlar,.skip,.gal-pfeil,.gal-thumbs,.gal-zoom,.reklam{display:none!important}
  body{background:#fff}
  .hero{background:none;color:#000}
}

/* Hero içindeki düğmede ikon */
.hero .cta a .ico{width:18px;height:18px}

/* Cevap sayfası çerçevesi (çözümlerin kendi CSS'i veritabanından gelir) */
.back{display:grid;grid-template-columns:120px minmax(0,1fr);gap:18px;align-items:center;padding:16px;background:var(--surface);border:1px solid var(--line);border-left:6px solid var(--cf);border-radius:var(--r);text-decoration:none;color:var(--ink)}
.back img{display:block;width:100%;height:auto;border-radius:3px;box-shadow:0 0 0 1px var(--line-strong)}
.back:hover .item-t{text-decoration:underline}
.dl-band{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px 24px;padding:20px 22px;background:var(--cs);border:1px solid var(--line);border-radius:var(--r)}
.dl-band p{font-weight:700;font-size:1.08rem}
.dl-band span{display:block;font-weight:400;font-size:.95rem;color:var(--muted)}
@media (max-width:520px){.back{grid-template-columns:80px minmax(0,1fr)}}

/* Çözüm alanı kabı: içindeki bloklar arası boşluk */
.cevap-govde{display:grid;gap:28px;min-width:0}

/* ---------- Boş durumlar ve önizleme bandı ---------- */
.bos{padding:22px;border:1px dashed var(--line-strong);border-radius:var(--r);background:var(--surface);color:var(--muted)}
.topics-bos{display:block;padding:14px 18px;color:var(--muted)}
.ws-yok{display:grid;place-items:center;aspect-ratio:794/1123;max-width:100%;border:1px dashed var(--line-strong);border-radius:4px;background:var(--sunken);color:var(--muted);font-size:.9rem;text-align:center;padding:12px}
.onizleme-bandi{background:var(--accent);color:var(--on-accent);font-weight:700;font-size:.92rem;text-align:center;padding:8px max(16px,env(safe-area-inset-right,0px)) 8px max(16px,env(safe-area-inset-left,0px))}
.onizleme-bandi a{color:inherit}

/* ---------- Reklam alanı: yer önceden ayrılır, sayfa kaymaz ---------- */
.reklam{display:grid;gap:6px;min-height:300px;align-content:start}
.reklam-etiket{font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

/* ---------- Sabit sayfalar (hakkımızda, gizlilik, çerez…) ---------- */
.sabit-govde{display:grid;gap:16px;max-width:72ch;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:clamp(20px,4vw,40px)}
.sabit-govde h2{font-size:clamp(1.2rem,1.1rem + .5vw,1.45rem);margin-top:10px}
.sabit-govde h2:first-child{margin-top:0}
.sabit-govde ul,.sabit-govde ol{margin:0;padding-left:1.3em;display:grid;gap:6px}
.sabit-govde a{font-weight:600}
.sabit-govde .tbl{overflow-x:auto;border:1px solid var(--line);border-radius:10px}
.sabit-govde table{border-collapse:collapse;width:100%;min-width:520px;font-size:.95rem}
.sabit-govde th,.sabit-govde td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.sabit-govde th{background:var(--sunken);font-size:.85rem}
.sabit-govde tr:last-child td{border-bottom:0}
.sabit-govde .eposta{display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 16px;background:var(--cs);border-radius:10px;font-weight:700;justify-self:start}
.sabit-govde .doldur{background:var(--accent);color:var(--on-accent);padding:0 4px;border-radius:3px}

/* ---------- Kommentare (Formular-CSS kommt mit /kommentar.php) ---------- */
.yorumlar{display:grid;gap:16px}
.yorum-serit{display:flex;flex-wrap:wrap;align-items:center;gap:14px 16px;padding:16px 18px;background:var(--cs);border-radius:var(--r);border:1px solid color-mix(in srgb,var(--cf) 22%,transparent)}
.yorum-ikon{flex:none;display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--cf);color:#fff}
.yorum-ikon .ico{width:24px;height:24px}
.yorum-etiket{flex:1 1 180px;display:grid;gap:2px;margin:0}
.yorum-etiket b{font-size:1.12rem;color:var(--c)}
.yorum-etiket span{font-size:.92rem;color:var(--muted)}
.yorum-ekle{display:grid;gap:10px}
.yorum-ekle .btn{background:var(--surface)}
.yorum-form{display:grid}
.yorum-liste{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.yorum{display:grid;grid-template-columns:42px minmax(0,1fr);gap:12px;align-items:start}
.yorum-av{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;font-weight:800;font-size:1.05rem;color:#fff;background:var(--av)}
.av-1{--av:#1d4fd8} .av-2{--av:#0b8a5a} .av-3{--av:#c3301f} .av-4{--av:#6233c9} .av-5{--av:#a35f00} .av-6{--av:#0e7490}
.yorum-balon{position:relative;display:grid;gap:6px;padding:12px 16px 14px;background:var(--surface);border:1px solid var(--line);border-radius:4px var(--r) var(--r) var(--r)}
.yorum-balon::before{content:"";position:absolute;left:-7px;top:12px;width:12px;height:12px;background:var(--surface);border-left:1px solid var(--line);border-bottom:1px solid var(--line);transform:rotate(45deg)}
.yorum-ust{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 12px}
.yorum-ust strong{color:var(--c)}
.yorum-ust time{font-size:.85rem;color:var(--muted)}
.yorum-metin{overflow-wrap:anywhere}

/* ---------- Ders sayfası: son eklenen çalışma kağıtları ---------- */
.se-liste{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;counter-reset:se}
.se-liste li{counter-increment:se;min-width:0}
.se-liste a{position:relative;display:grid;gap:3px;height:100%;padding:13px 16px 13px 58px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink);transition:border-color .15s,box-shadow .15s}
.se-liste a::before{content:counter(se);position:absolute;left:14px;top:13px;display:grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--cs);color:var(--c);font-weight:800;font-size:.95rem}
.se-liste a:hover{border-color:var(--cf);box-shadow:var(--shadow)}
.se-liste a:hover .se-t{text-decoration:underline}
.se-t{font-weight:700;color:var(--c);line-height:1.3}
.se-d{font-size:.9rem;color:var(--muted);line-height:1.45}
@media (max-width:700px){.se-liste{grid-template-columns:minmax(0,1fr)}}

/* ---------- İletişim formu ---------- */
.iletisim{display:grid;gap:14px;max-width:72ch}
.form-kutu{display:grid;gap:16px;padding:clamp(18px,3vw,28px);background:var(--surface);border:1px solid var(--line);border-radius:var(--r)}
.form-kutu .alan{display:grid;gap:6px;min-width:0}
.form-kutu label{font-weight:700;font-size:.95rem}
.form-kutu .zorunlu{font-weight:400;color:var(--hard);font-size:.85rem}
.form-kutu .istege{font-weight:400;color:var(--muted);font-size:.85rem}
.form-kutu input,.form-kutu textarea{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line-strong);border-radius:10px;padding:11px 13px;width:100%}
.form-kutu textarea{resize:vertical;min-height:160px}
.form-kutu input:focus,.form-kutu textarea:focus{outline:none;border-color:var(--cf);box-shadow:0 0 0 3px color-mix(in srgb,var(--cf) 20%,transparent)}
.form-kutu [aria-invalid="true"]{border-color:var(--hard)}
.alan-ikili{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.alan-hata{color:var(--hard);font-size:.88rem;font-weight:700}
.form-mesaj{padding:12px 16px;border-radius:10px;font-weight:700}
.form-mesaj.ok{background:color-mix(in srgb,var(--ok) 14%,var(--surface));color:var(--ok)}
.form-mesaj.hata{background:color-mix(in srgb,var(--hard) 12%,var(--surface));color:var(--hard)}
.yf-tuzak{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
@media (max-width:560px){.alan-ikili{grid-template-columns:minmax(0,1fr)}}