:root{
  color-scheme:dark;
  --bg:#08111f;--panel:#101c2e;--panel2:#132239;--line:#2a3d58;
  --ink:#f4f8fc;--muted:#a9bad0;--accent:#22b8cf;--accent2:#60a5fa;
  --ok:#34d399;--warn:#fbbf24;--bad:#fb7185;
}
*{box-sizing:border-box}
body{margin:0;background:radial-gradient(circle at top,#122139 0,#08111f 52%);color:var(--ink);font:15px/1.45 system-ui,-apple-system,Segoe UI,sans-serif}
.hero{max-width:1500px;margin:0 auto;padding:26px 28px 16px;display:flex;justify-content:space-between;gap:24px;align-items:flex-start}
.hero h1{font-size:2.5rem;margin:.1rem 0}.hero p{margin:.25rem 0;color:var(--muted)}
.eyebrow,.kicker{font-size:.78rem;letter-spacing:.1em;font-weight:800;color:#8ddce7;text-transform:uppercase}.version{padding:10px 14px;border:1px solid var(--line);border-radius:14px;text-align:right;font-weight:800;background:rgba(16,28,46,.8)}.version small{color:var(--muted)}
.layout{max-width:1500px;margin:0 auto;padding:0 20px 28px;display:grid;grid-template-columns:290px minmax(0,1fr) 330px;gap:14px;align-items:start}
.card{background:linear-gradient(180deg,rgba(19,34,57,.97),rgba(12,24,41,.97));border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:0 14px 40px rgba(0,0,0,.16)}
.controls{grid-row:span 2}.chromatogram-card{min-width:0}.results{min-width:0}.history-card{grid-column:2/4}.model-card{grid-column:1/4}
h2{margin:0 0 14px;font-size:1.25rem}.section-head{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:10px}.section-head h2{margin:0}
label{display:grid;gap:6px;margin:13px 0 5px;font-weight:700;color:#d8e5f2}select,button{font:inherit}select{width:100%;padding:10px 11px;border-radius:10px;border:1px solid var(--line);background:#0b1728;color:var(--ink)}select:disabled{opacity:.5}.hint{color:var(--muted);font-size:.84rem;margin:5px 0 9px}
button{width:100%;padding:11px 13px;border-radius:10px;border:1px solid var(--line);font-weight:800;cursor:pointer;margin-top:10px}.primary{background:#0f7890;color:white;border-color:#28b7c9}.secondary{background:#17263a;color:#d8e5f2}.primary:hover{filter:brightness(1.08)}button:disabled{opacity:.52;cursor:not-allowed;filter:none}
#chromCanvas{width:100%;height:auto;background:#07101c;border:1px solid var(--line);border-radius:12px;display:block}.status-pill{padding:5px 10px;border-radius:999px;background:#17263a;color:var(--muted);font-size:.82rem;font-weight:800}.status-pill.running{color:#ffe8a3;border:1px solid rgba(251,191,36,.45);background:rgba(120,53,15,.22)}
.feedback{margin-top:12px;border:1px solid var(--line);border-radius:12px;padding:11px 13px}.feedback.good{border-color:rgba(52,211,153,.6);background:rgba(6,78,59,.28)}.feedback.warn{border-color:rgba(251,191,36,.6);background:rgba(120,53,15,.22)}.feedback.bad{border-color:rgba(251,113,133,.65);background:rgba(127,29,29,.2)}.feedback.neutral{color:var(--muted)}
.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:15px}.metric-grid div{background:#0a1626;border:1px solid var(--line);border-radius:11px;padding:10px}.metric-grid span{display:block;color:var(--muted);font-size:.77rem}.metric-grid strong{display:block;font-size:1.25rem;margin-top:2px}
.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:.86rem}th,td{text-align:left;padding:8px 7px;border-bottom:1px solid rgba(169,186,208,.15);white-space:nowrap}th{color:#bcd0e5;font-size:.77rem;text-transform:uppercase;letter-spacing:.04em}.muted{color:var(--muted)}
.concept-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.concept-grid div{padding:12px;border:1px solid var(--line);border-radius:12px;background:#0b1728}.concept-grid strong{display:block;color:#91e3eb;margin-bottom:3px}.concept-grid span{color:var(--muted);font-size:.85rem}
footer{max-width:1500px;margin:0 auto;padding:0 22px 25px;color:#71869e;text-align:center;font-size:.82rem}
@media(max-width:1080px){.layout{grid-template-columns:1fr 1fr}.controls{grid-row:auto}.chromatogram-card{grid-column:1/3}.history-card,.model-card{grid-column:1/3}.results{grid-column:2}.concept-grid{grid-template-columns:1fr 1fr}}
@media(max-width:720px){.layout{display:block}.card{margin-bottom:12px}.concept-grid{grid-template-columns:1fr}.hero{padding-inline:18px}.version{font-size:.85rem}}


.history-row{cursor:pointer;transition:background .15s ease,box-shadow .15s ease}
.history-row:hover{background:rgba(34,184,207,.10)}
.history-row.selected{background:rgba(34,184,207,.16);box-shadow:inset 3px 0 0 #22b8cf}
.history-row.selected td{color:#eefcff}
.history-hint{margin-top:-4px;margin-bottom:10px}


.bridge-context{display:none;max-width:1500px;margin:0 auto 14px;padding:12px 16px;border:1px solid rgba(34,184,207,.55);border-radius:14px;background:rgba(15,120,144,.14);gap:18px;align-items:center;justify-content:space-between}
.bridge-context.active{display:flex}
.bridge-context.error{border-color:rgba(251,113,133,.7);background:rgba(127,29,29,.2)}
.bridge-context strong{display:block;color:#b9f3fa;margin-bottom:3px}
.bridge-meta{color:#c9d7e5;font-size:.86rem}
.bridge-run{color:#7f95ad;font:0.75rem ui-monospace,SFMono-Regular,Consolas,monospace;margin:2px 0}
.bridge-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.bridge-actions button.compact{width:auto;margin-top:0;white-space:nowrap}
.bridge-actions button:disabled{opacity:.42;cursor:not-allowed;filter:none}
@media(max-width:720px){.bridge-context{margin-inline:12px;align-items:stretch;flex-direction:column}.bridge-actions{justify-content:stretch}.bridge-actions button.compact{width:100%}}


/* v0.2.0 · gezielte GC-Bestätigung */
.verification-panel{display:none;max-width:1500px;margin:0 auto 14px;padding:16px 18px;border:1px solid rgba(245,198,106,.45);border-radius:16px;background:rgba(91,63,15,.16)}
.verification-panel.active{display:block}.verification-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}
.verification-head h2{margin:.2rem 0 .25rem}.verification-source{display:grid;gap:3px;text-align:right;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:#0b1728}
.verification-source span{color:var(--muted);font-size:.8rem}.verification-steps{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.verification-step{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:12px;background:#0b1728}
.verification-step p{margin:2px 0;color:var(--muted);font-size:.82rem}.step-no{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#17304b;color:#dff7fa;font-weight:800}
.verification-step button{width:auto;margin:0}.verification-evidence{grid-column:2/4;font-size:.82rem;color:var(--muted)}
.verification-evidence strong{display:block;margin-bottom:2px}.verification-evidence.good{color:#8ff0ca}.verification-evidence.bad{color:#ffb1bd}
.verification-evidence span{color:var(--muted)}.verification-legend{margin-top:10px;color:#9fb2c8;font-size:.82rem}
@media(max-width:900px){.verification-steps{grid-template-columns:1fr}.verification-head{flex-direction:column}.verification-source{text-align:left}.verification-step{grid-template-columns:auto 1fr}.verification-step button,.verification-evidence{grid-column:2}}

.verification-zoom{margin-top:12px;padding:10px;border:1px solid var(--line);border-radius:12px;background:#07101c}
.verification-zoom>div{display:flex;justify-content:space-between;gap:12px;align-items:baseline;margin-bottom:7px}
.verification-zoom span{color:var(--muted);font-size:.8rem}
#verificationZoomCanvas{display:block;width:100%;height:auto;border:1px solid rgba(42,61,88,.75);border-radius:9px;background:#07101c}
@media(max-width:720px){.verification-zoom>div{align-items:flex-start;flex-direction:column}}


/* v0.3.1 · Chromatogramm entziffern */
.identification-card{display:none;grid-column:1/4}
.identification-card.active{display:block}
.ident-standard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:9px;margin:12px 0}
.ident-standard-grid button{margin:0;text-align:left;background:#0b1728}
.ident-standard-grid button.measured{border-color:rgba(96,165,250,.7);background:rgba(30,64,175,.16)}
.ident-standard-grid button.assigned{border-color:rgba(52,211,153,.65);background:rgba(6,78,59,.24)}
.ident-workbench{display:flex;justify-content:space-between;gap:14px;align-items:center;margin:12px 0}
.ident-assign{display:flex;gap:8px;align-items:center;min-width:min(430px,100%)}
.ident-assign select{min-width:190px}
.ident-assign button{width:auto;margin:0;white-space:nowrap}
#identCanvas{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:12px;background:#07101c}
.ident-map-wrap{margin-top:12px}
@media(max-width:1080px){.identification-card{grid-column:1/3}}
@media(max-width:720px){.ident-workbench,.ident-assign{align-items:stretch;flex-direction:column}.ident-assign{min-width:0}.ident-assign button{width:100%}}


/* v0.4.0 · schematische Trennprozess-Animation */
.process-controls{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.process-controls button.compact{width:auto;margin:0}
.process-panel{display:none;margin-top:12px;padding:12px;border:1px solid var(--line);border-radius:12px;background:#081321}
.process-panel.active{display:block}
.process-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;margin-bottom:9px}
.process-head strong{display:block;color:#dff7fa;margin-bottom:2px}
.process-head span{display:block;color:var(--muted);font-size:.8rem}
.process-badge{padding:4px 8px;border:1px solid rgba(96,165,250,.45);border-radius:999px;background:rgba(30,64,175,.16);white-space:nowrap}
#processCanvas{display:block;width:100%;height:auto;border:1px solid rgba(42,61,88,.85);border-radius:10px;background:#06101b}
.process-note{margin:8px 2px 0}
@media(max-width:720px){.process-controls{flex-direction:column}.process-controls button.compact{width:100%}.process-head{flex-direction:column}}


/* v0.5.0 · Lernaufgaben */
.task-panel{max-width:1500px;margin:0 auto 14px;padding:18px}
.task-panel-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}
.task-panel-head h2{margin:.15rem 0 .3rem}
.task-panel-head .hint{margin:.15rem 0 0}
.task-choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.task-choice{padding:14px;border:1px solid var(--line);border-radius:14px;background:#0b1728}
.task-choice h3{margin:.55rem 0 .35rem}
.task-choice p{margin:0 0 12px;color:var(--muted)}
.task-choice button{width:auto;margin:0}
.task-choice-badges{display:flex;gap:6px;flex-wrap:wrap}
.task-choice-badges span{display:inline-flex;padding:4px 8px;border-radius:999px;background:rgba(34,184,207,.12);border:1px solid rgba(34,184,207,.35);color:#b9f3fa;font-size:.76rem;font-weight:800}
.task-workspace{margin-top:14px;padding:16px;border:1px solid rgba(96,165,250,.42);border-radius:14px;background:rgba(30,64,175,.08)}
.task-workspace-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.task-workspace-head h2{margin:.45rem 0 .2rem}
.task-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:8px;margin:14px 0}
.task-step{padding:10px 11px;border:1px solid var(--line);border-radius:11px;background:#0b1728;color:var(--muted);font-size:.84rem}
.task-step strong{display:block;color:#dce8f5;margin-bottom:3px}
.task-step.active{border-color:rgba(251,191,36,.65);background:rgba(120,83,15,.16)}
.task-step.done{border-color:rgba(52,211,153,.55);background:rgba(6,78,59,.18)}
.task-step.done strong{color:#9cf0d0}
.task-instruction{padding:12px 14px;border-left:3px solid #60a5fa;border-radius:8px;background:rgba(30,64,175,.11);margin-bottom:10px}
.task-instruction strong{display:block;margin-bottom:4px}
.task-reflection{margin-top:12px;padding:12px;border:1px solid var(--line);border-radius:12px;background:#0b1728}
.task-reflection label{display:grid;gap:3px;margin-bottom:8px}
.task-reflection label span{color:var(--muted);font-size:.84rem}
.task-reflection textarea{width:100%;resize:vertical;min-height:84px;padding:10px 11px;border:1px solid var(--line);border-radius:9px;background:#07101c;color:var(--text);font:inherit}
.task-reflection button{width:auto;margin:10px 0 0}
.task-summary{margin-top:12px;padding:13px 14px;border:1px solid rgba(52,211,153,.5);border-radius:12px;background:rgba(6,78,59,.18)}
.task-summary strong{color:#9cf0d0}
.task-summary ul{margin:.45rem 0 0;padding-left:1.2rem}
body.task-active .controls h2::after{content:" · Aufgabe";color:#7dd3fc;font-size:.78rem;font-weight:700}
@media(max-width:820px){
  .task-choice-grid{grid-template-columns:1fr}
  .task-panel-head,.task-workspace-head{flex-direction:column}
  .task-panel-head>button{width:100%}
}