/* ============================================================
   style.css — Theme "Reise in den Weltraum" (House-Style, erweitert).
   Weltraum-Dunkel; --accent wird pro Pfad gesetzt (engine.js).
   Mobile-first, WCAG-AA als Ziel.
   ============================================================ */
:root {
  --bg: #070d1f;
  --panel: #0d1a36;
  --panel-2: #132348;
  --ink: #eaf0ff;
  --ink-dim: #aab8d8;
  --accent: #5ad1ff;
  --accent-2: #ffd166;
  --ok: #59d98c;
  --todo: #ffb454;
  --radius: 14px;
  --maxw: 920px;
  font-size: 17px;
}
* { box-sizing: border-box; }
body {
  margin: 0; background:
    radial-gradient(1200px 600px at 70% -10%, #16264e 0%, transparent 60%),
    radial-gradient(900px 500px at 10% 10%, #122046 0%, transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55; min-height: 100vh;
}
a { color: var(--accent); }

/* ---------- Kopfzeile ---------- */
header.top {
  position: sticky; top: 0; z-index: 30;
  background: rgba(7,13,31,.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid #1d2c52; padding: .6rem 1rem;
}
.top__row { max-width: var(--maxw); margin: 0 auto; display: flex; gap: 1rem;
  align-items: center; justify-content: space-between; flex-wrap: wrap; }
header.top h1 { font-size: 1.15rem; margin: 0; }
header.top p { margin: .15rem 0 0; color: var(--ink-dim); font-size: .82rem; }
main { max-width: var(--maxw); margin: 0 auto; padding: 1rem 1rem 4rem; }
.hidden { display: none !important; }

/* ---------- Status-Bar (Level/XP/Spiel) ---------- */
.astro-status { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.astro-name { font-weight: 700; color: var(--accent-2); }
.astro-level { font-size: .85rem; background: var(--panel-2); border: 1px solid #25386a;
  padding: .25rem .6rem; border-radius: 999px; white-space: nowrap; }
.astro-xpbar { position: relative; width: 140px; height: 18px; background: #0a1430;
  border: 1px solid #25386a; border-radius: 999px; overflow: hidden; }
.astro-xpbar__fill { position: absolute; inset: 0; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width .4s; }
.astro-xpbar__txt { position: absolute; inset: 0; display: grid; place-items: center;
  font-size: .72rem; font-weight: 700; color: #07101f; text-shadow: 0 0 3px rgba(255,255,255,.4); }
.astro-gamebtn { background: var(--panel-2); color: var(--ink); border: 1px solid #25386a;
  border-radius: 999px; padding: .3rem .7rem; font-size: .82rem; cursor: pointer; }
.astro-gamebtn:disabled { opacity: .45; cursor: not-allowed; }

/* ---------- Hub / Sternenkarte ---------- */
.astro-hub { padding-top: .4rem; }
.hub-head h2 { margin: .4rem 0 .2rem; }
.hub-head p { color: var(--ink-dim); margin: 0 0 1rem; }
.hub-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: .8rem; }
.hub-card { --c: var(--accent); text-align: left; cursor: pointer;
  background: var(--panel); border: 1px solid #1b2b50; border-left: 4px solid var(--c);
  border-radius: var(--radius); padding: .9rem; color: var(--ink); display: flex; flex-direction: column; gap: .15rem;
  transition: transform .12s, box-shadow .12s; }
.hub-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,.35); }
.hub-card.is-complete { box-shadow: 0 0 0 1px var(--c) inset, 0 0 18px -6px var(--c); }
.hub-card__icon { font-size: 1.8rem; }
.hub-card__name { font-weight: 700; }
.hub-card__short { color: var(--ink-dim); font-size: .82rem; }
.hub-card__prog { display: block; height: 6px; background: #0a1430; border-radius: 999px; overflow: hidden; margin: .4rem 0 .2rem; }
.hub-card__bar { display: block; height: 100%; background: var(--c); }
.hub-card__meta { color: var(--ink-dim); font-size: .76rem; }

/* ---------- Badge-Regal ---------- */
.badge-shelf { margin-top: 1.6rem; background: var(--panel); border: 1px solid #1b2b50;
  border-radius: var(--radius); padding: .9rem 1.1rem; }
.badge-shelf h3 { margin: .2rem 0 .7rem; }
.badge-shelf small { color: var(--ink-dim); font-weight: 400; }
.badge-row { display: flex; gap: .5rem; flex-wrap: wrap; }
.badge-chip { display: flex; align-items: center; gap: .35rem; padding: .3rem .6rem;
  border-radius: 999px; border: 1px solid #25386a; font-size: .8rem; }
.badge-chip.got { background: rgba(89,217,140,.12); border-color: var(--ok); }
.badge-chip.locked { opacity: .55; }
.badge-chip__icon { font-size: 1.1rem; }

/* ---------- Pfad-Ansicht ---------- */
.path-head { margin-bottom: .6rem; }
.path-head h2 { margin: .5rem 0 .2rem; }
.path-head p { color: var(--ink-dim); margin: 0; }
.back-btn { background: var(--panel-2); color: var(--ink); border: 1px solid #25386a;
  border-radius: 999px; padding: .35rem .8rem; cursor: pointer; font-size: .85rem; }

/* ---------- Differenzierungs-Leiste ---------- */
#diff-bar { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; margin: .8rem 0 1.4rem; }
.tierbar { display: flex; gap: .4rem; align-items: center; flex-wrap: wrap; }
.tierbar__lbl { color: var(--ink-dim); font-size: .85rem; }
.tierbtn { background: var(--panel-2); color: var(--ink-dim); border: 1px solid #25386a;
  border-radius: 999px; padding: .35rem .8rem; font-size: .85rem; cursor: pointer; }
.tierbtn.is-on { color: #07101f; background: var(--accent); border-color: var(--accent); font-weight: 600; }
#progress { margin-left: auto; color: var(--ink-dim); font-size: .85rem; }

/* ---------- Stationen ---------- */
.station { background: var(--panel); border: 1px solid #1b2b50; border-radius: var(--radius);
  padding: 1.1rem 1.2rem; margin: 0 0 1.2rem; }
.station__no { color: var(--accent); font-size: .8rem; letter-spacing: .03em; text-transform: uppercase; }
.station__title { margin: .2rem 0 .7rem; font-size: 1.3rem; }
.station__basis ul, .station__basis ol { margin: .5rem 0; padding-left: 1.3rem; }
.station__aufgabe { margin-top: .9rem; padding: .7rem .9rem; background: var(--panel-2);
  border-left: 3px solid var(--accent-2); border-radius: 8px; }
.block { margin: .8rem 0; background: var(--panel-2); border: 1px solid #25386a; border-radius: 10px; padding: .2rem .9rem; }
.block summary { cursor: pointer; padding: .5rem 0; font-weight: 600; }
.block[open] summary { color: var(--accent); }
.phywe-box { margin: .8rem 0; padding: .8rem 1rem; background: rgba(89,217,140,.08);
  border: 1px solid var(--ok); border-radius: 10px; font-size: .95rem; }

/* ---------- Lab-Container ---------- */
.lab { margin: 1rem 0; padding: 1rem; background: #0a1430; border: 1px solid #25386a; border-radius: 12px; }
.lab__todo { color: var(--todo); font-size: .9rem; background: rgba(255,180,84,.08);
  border: 1px dashed var(--todo); border-radius: 8px; padding: .5rem .7rem; }
.lab label { display: block; margin: .6rem 0 .2rem; color: var(--ink-dim); font-size: .9rem; }
.lab input[type=range] { width: 100%; }
.lab .row { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }
.lab .readout { font-variant-numeric: tabular-nums; font-size: 1.4rem; font-weight: 700; }
.lab button.primary { background: var(--accent); color: #07101f; border: 0; border-radius: 10px;
  padding: .55rem 1rem; font-weight: 700; cursor: pointer; margin: .15rem .15rem 0 0; }
.lab button.primary:disabled { opacity: .6; cursor: default; }
.lab table { border-collapse: collapse; width: 100%; margin-top: .6rem; font-size: .9rem; }
.lab th, .lab td { border-bottom: 1px solid #25386a; padding: .35rem .5rem; text-align: left; }
.stub-info { margin: .6rem 0; color: var(--ink); }

/* Zeitstrahl-Lab */
.zt-list { list-style: none; padding: 0; margin: .4rem 0; }
.zt-item { background: var(--panel-2); border: 1px solid #25386a; border-radius: 8px;
  padding: .5rem .7rem; margin: .35rem 0; cursor: pointer; }
.zt-item.sel { outline: 2px solid var(--accent); }
.zt-year { font-weight: 700; color: var(--accent-2); margin-right: .4rem; }

/* Raketen-Lab */
.rk-card { display: flex; gap: 1rem; align-items: flex-end; flex-wrap: wrap; }
.rk-bar-wrap { display: flex; flex-direction: column; align-items: center; min-width: 60px; }
.rk-bar { width: 26px; background: linear-gradient(180deg, var(--accent), var(--accent-2)); border-radius: 6px 6px 0 0; }
.rk-h { font-size: .75rem; color: var(--ink-dim); margin-top: .2rem; }
.rk-data { flex: 1; min-width: 220px; }

/* Capstone-Quiz */
.cap-q { margin: .6rem 0 1rem; }
.cap-opt { display: block; cursor: pointer; padding: .25rem 0; color: var(--ink); }

/* ---------- Status-Badges ---------- */
.badge { display: inline-block; padding: .15rem .6rem; border-radius: 999px; font-size: .8rem; }
.badge.ok { background: rgba(89,217,140,.15); color: var(--ok); border: 1px solid var(--ok); }
.badge.todo { background: rgba(255,180,84,.12); color: var(--todo); border: 1px solid var(--todo); }

/* ---------- Toasts ---------- */
.xp-toast, .badge-toast { position: fixed; right: 1rem; z-index: 60;
  background: var(--panel); border: 1px solid var(--accent); border-radius: 12px;
  padding: .6rem 1rem; box-shadow: 0 10px 30px rgba(0,0,0,.5);
  opacity: 0; transform: translateY(-10px); transition: opacity .3s, transform .3s; }
.xp-toast { top: 4.5rem; font-weight: 800; color: var(--accent-2); font-size: 1.1rem; }
.badge-toast { top: 7rem; display: flex; gap: .6rem; align-items: center; border-color: var(--ok); max-width: 280px; }
.badge-toast__icon { font-size: 1.8rem; }
.xp-toast.show, .badge-toast.show { opacity: 1; transform: translateY(0); }

/* ---------- Auth-Overlay ---------- */
.auth-overlay { position: fixed; inset: 0; z-index: 80; display: none;
  background: rgba(3,6,15,.93); backdrop-filter: blur(4px); place-items: center; padding: 1rem; }
.auth-overlay.open { display: grid; }
.auth-card { background: var(--panel); border: 1px solid #25386a; border-radius: 16px;
  padding: 1.4rem 1.5rem; width: 100%; max-width: 380px; box-shadow: 0 20px 60px rgba(0,0,0,.6); }
.auth-card h2 { margin: 0 0 .4rem; }
.auth-note { color: var(--ink-dim); font-size: .9rem; margin: 0 0 1rem; }
.auth-card label { display: block; font-size: .82rem; color: var(--ink-dim); margin: .7rem 0 .25rem; }
.auth-card input { width: 100%; padding: .6rem .7rem; border-radius: 10px; border: 1px solid #2a3d70;
  background: #0a1430; color: var(--ink); font-size: 1.05rem; text-transform: none; }
.auth-btn { margin-top: 1rem; width: 100%; background: var(--accent); color: #07101f; border: 0;
  border-radius: 10px; padding: .7rem; font-weight: 800; font-size: 1rem; cursor: pointer; }
.auth-err { color: #ff7676; min-height: 1.2em; font-size: .85rem; margin: .3rem 0 0; }
.auth-hint { color: var(--ink-dim); font-size: .76rem; margin: .8rem 0 0; }

/* ---------- Spiel-Modal ---------- */
.game-modal { position: fixed; inset: 0; z-index: 70; display: none;
  background: rgba(3,6,15,.9); place-items: center; padding: 1rem; }
.game-modal.open { display: grid; }
.game-modal__inner { position: relative; background: var(--panel); border: 1px solid #25386a;
  border-radius: 16px; padding: 1rem; max-width: 520px; width: 100%; }
.game-modal__close { position: absolute; top: .5rem; right: .6rem; background: var(--panel-2);
  border: 1px solid #25386a; color: var(--ink); border-radius: 999px; width: 32px; height: 32px; cursor: pointer; }
.ag-wrap { text-align: center; }
.ag-hud { display: flex; gap: .8rem; justify-content: space-between; flex-wrap: wrap;
  font-size: .85rem; color: var(--ink-dim); margin-bottom: .4rem; }
#ag-canvas { width: 100%; max-width: 480px; background: #03060f; border-radius: 10px; touch-action: none; }
.ag-help { font-size: .75rem; color: var(--ink-dim); margin: .4rem 0; }
.ag-restart { background: var(--accent); color: #07101f; border: 0; border-radius: 10px; padding: .5rem 1rem; font-weight: 700; cursor: pointer; }

/* ---------- Sync-Hinweis ---------- */
.astro-sync { display: inline-block; opacity: 0; transition: opacity .3s; color: var(--ok); font-size: .78rem; }
.astro-sync.show { opacity: 1; }

footer.foot { max-width: var(--maxw); margin: 0 auto; padding: 1rem;
  color: var(--ink-dim); font-size: .8rem; border-top: 1px solid #1d2c52; }