:root {
  --bg-haupt: #18181b;       
  --bg-header: #09090b;      
  --bg-karte: #27272a;       
  --bg-eingabe: #18181b;     
  --text-hell: #f4f4f5;      
  --text-grau: #a1a1aa;      
  --rahmen: #3f3f46;         
  --blau-akzent: #0284c7;    
  --blau-hover: #0369a1;     
  --radius: 6px;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: system-ui, sans-serif; }
body { background-color: var(--bg-haupt); color: var(--text-hell); line-height: 1.6; -webkit-font-smoothing: antialiased; }

#login-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: var(--bg-haupt); display: flex; flex-direction: column; justify-content: center; align-items: center; z-index: 1000; }
.login-box { background-color: var(--bg-karte); padding: 40px; border-radius: var(--radius); border: 1px solid var(--rahmen); text-align: center; box-shadow: 0 10px 25px rgba(0,0,0,0.5); }
.login-box h2 { margin-bottom: 10px; color: var(--text-hell); }
.login-box p { margin-bottom: 25px; color: var(--text-grau); }

header { background-color: var(--bg-header); padding: 16px; border-bottom: 1px solid var(--rahmen); position: sticky; top: 0; z-index: 100; }
.header-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; max-width: 600px; margin-left: auto; margin-right: auto; }
h1 { font-size: 1.1rem; font-weight: 600; color: var(--text-hell); margin: 0; }

.logout-btn { background: none; border: 1px solid var(--rahmen); color: var(--text-grau); padding: 4px 10px; border-radius: 4px; cursor: pointer; font-size: 0.8rem; }
.logout-btn:hover { color: white; border-color: white; }

.tab-container { display: flex; justify-content: center; gap: 8px; max-width: 600px; margin: 0 auto; }
.tab-button { flex: 1; background-color: transparent; color: var(--text-grau); border: 1px solid transparent; padding: 10px; border-radius: var(--radius); font-size: 0.9rem; font-weight: 500; cursor: pointer; transition: all 0.2s ease; }
.tab-button.aktiv { background-color: rgba(2, 132, 199, 0.15); color: var(--blau-akzent); border-color: rgba(2, 132, 199, 0.3); font-weight: 600; }

main { max-width: 600px; margin: 24px auto; padding: 0 16px; }
.tab-inhalt { display: none; animation: einblenden 0.2s ease-in-out; }
.tab-inhalt.aktiv { display: block; }
@keyframes einblenden { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

.karte { background-color: var(--bg-karte); border-radius: var(--radius); padding: 24px; margin-bottom: 16px; border: 1px solid var(--rahmen); box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
.karte-titel { font-size: 0.85rem; font-weight: 600; margin-bottom: 16px; color: var(--text-grau); border-bottom: 1px solid var(--rahmen); padding-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }

label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: 6px; color: var(--text-grau); }
input[type="text"], input[type="email"], input[type="password"], textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--rahmen); border-radius: var(--radius); font-size: 0.95rem; margin-bottom: 16px; background-color: var(--bg-eingabe); color: var(--text-hell); transition: all 0.2s ease; }
input::placeholder, textarea::placeholder { color: #52525b; }
input:focus, textarea:focus { outline: none; border-color: var(--blau-akzent); box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.2); }
textarea { resize: vertical; min-height: 80px; }

button.aktion-btn { width: 100%; background-color: var(--blau-akzent); color: white; border: none; padding: 12px; border-radius: var(--radius); font-size: 0.95rem; font-weight: 500; cursor: pointer; transition: background-color 0.2s; display: flex; justify-content: center; align-items: center; gap: 8px; }
button.aktion-btn:hover { background-color: var(--blau-hover); }
button.aktion-btn:disabled { background-color: var(--rahmen); color: var(--text-grau); cursor: not-allowed; }

.listen-kopf { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 10px; }
.zaehler-badge { background-color: var(--bg-eingabe); color: var(--text-grau); padding: 4px 10px; border-radius: 12px; font-size: 0.8rem; font-weight: 500; border: 1px solid var(--rahmen); }

.reset-btn { background: none; border: none; color: var(--blau-akzent); font-size: 0.85rem; font-weight: 600; cursor: pointer; display: none; }
.reset-btn:hover { text-decoration: underline; }

.edit-modus-btn { background: none; border: 1px solid var(--rahmen); color: var(--text-grau); padding: 4px 10px; border-radius: 12px; font-size: 0.8rem; font-weight: 500; cursor: pointer; transition: all 0.2s; }
.edit-modus-btn.aktiv { background-color: rgba(2, 132, 199, 0.15); color: var(--blau-akzent); border-color: var(--blau-akzent); }

.glossar-eintrag { background-color: var(--bg-eingabe); border-radius: var(--radius); padding: 16px; margin-bottom: 12px; border-left: 3px solid var(--blau-akzent); border-top: 1px solid var(--rahmen); border-right: 1px solid var(--rahmen); border-bottom: 1px solid var(--rahmen); transition: all 0.2s; }
.glossar-begriff { font-weight: 600; font-size: 1rem; margin-bottom: 4px; color: var(--text-hell); }
.glossar-definition { font-size: 0.9rem; color: var(--text-grau); }

.karten-aktionen { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--rahmen); display: flex; justify-content: flex-end; gap: 16px; }
.aktion-text-btn { background: none; border: none; font-size: 0.85rem; font-weight: 600; cursor: pointer; color: var(--text-grau); transition: color 0.2s; }
.aktion-text-btn:hover { color: var(--text-hell); }
.aktion-text-btn.loeschen:hover { color: #f87171; }
.aktion-text-btn.speichern { color: var(--blau-akzent); }

.leerer-zustand { text-align: center; padding: 24px 10px; color: var(--text-grau); font-size: 0.9rem; }

.meldung { padding: 12px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.85rem; font-weight: 500; display: none; }
.meldung.erfolg { background-color: rgba(16, 185, 129, 0.1); color: #34d399; border: 1px solid #059669; display: block; }
.meldung.fehler { background-color: rgba(239, 68, 68, 0.1); color: #f87171; border: 1px solid #dc2626; display: block; }
.ki-ergebnis-box { background-color: rgba(2, 132, 199, 0.1); border: 1px solid var(--blau-akzent); color: #38bdf8; padding: 12px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.9rem; display: none; }

.spinner { width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.3); border-radius: 50%; border-top-color: white; animation: drehen 0.8s linear infinite; display: none; }
@keyframes drehen { to { transform: rotate(360deg); } }