:root{
  --primary:#6d4aff; --primary-dark:#5735db;
  --success:#37a86b; --danger:#e5484d; --warn:#e8930c;
  --bg:#f4f5f7; --panel:#fff; --text:#22242a; --muted:#767b87;
  --border:#e2e4ea; --radius:12px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.5}

/* ---------------- Topbar ---------------- */
.topbar{display:flex;justify-content:space-between;align-items:center;
  padding:14px 20px;background:var(--panel);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:50}
.brand{font-weight:700;font-size:1.05rem;text-decoration:none;color:var(--text)}
.user-box{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.user-box .muted{font-size:.85rem}

.layout{max-width:960px;margin:0 auto;padding:20px;display:flex;
  flex-direction:column;gap:20px}

/* ---------------- Panels ---------------- */
.panel{background:var(--panel);border-radius:var(--radius);padding:20px;
  box-shadow:0 1px 3px rgba(0,0,0,.07)}
.panel h2{margin:0 0 16px;font-size:1.05rem;color:var(--primary);
  border-bottom:2px solid var(--primary);padding-bottom:8px}
.panel h3{margin:1rem 0 .5rem;font-size:.95rem;color:var(--primary-dark)}
.panel p{margin:.5rem 0}

/* ---------------- Labels & Inputs ---------------- */
label{display:flex;flex-direction:column;gap:6px;font-size:.88rem;color:var(--muted)}
label.inline{flex-direction:row;align-items:center;gap:8px;flex-wrap:wrap;
  color:var(--text);font-size:.9rem;cursor:pointer}

input[type=text],input[type=email],input[type=number],input[type=password],select{
  padding:10px 12px;border:1px solid var(--border);border-radius:8px;
  font-size:.95rem;color:var(--text);background:#fff;width:100%;font-family:inherit}
input:focus,select:focus{outline:2px solid var(--primary);outline-offset:1px}

.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end;margin-bottom:14px}
.grow{flex:1;min-width:200px}
.button-stack{display:flex;gap:8px;flex-wrap:wrap}

/* ---------------- Buttons (auch als Links!) ---------------- */
button,.button{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  cursor:pointer;border:none;border-radius:8px;padding:10px 18px;
  font-size:.92rem;font-weight:600;text-decoration:none;font-family:inherit;
  transition:background .15s,color .15s,opacity .15s;line-height:1.2}
button:disabled,.button.disabled{opacity:.45;cursor:not-allowed}
button:focus-visible,.button:focus-visible{outline:2px solid var(--primary);
  outline-offset:2px}

.primary,.button.primary{background:var(--primary);color:#fff}
.primary:hover:not(:disabled){background:var(--primary-dark)}
.secondary{background:#ece9ff;color:var(--primary-dark)}
.secondary:hover:not(:disabled){background:#ded9ff}
.ghost,.button.ghost{background:#f0f1f4;color:var(--text)}
.ghost:hover:not(:disabled){background:#e4e6eb}
.ghost.danger,.button.ghost.danger{background:#fdeded;color:var(--danger)}
.danger{background:var(--danger);color:#fff}
.danger:hover:not(:disabled){background:#c7363b}
.small{padding:6px 12px;font-size:.8rem}
.link-button{background:transparent;color:var(--muted);text-decoration:underline;
  padding:6px;font-weight:400}
.link-button:hover:not(:disabled){color:var(--text)}

.start-row{margin-top:20px;justify-content:flex-end}
.start-row .primary,.start-row .danger{flex:1}

/* ---------------- Stepper (Zähler) ---------------- */
.counter-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));
  gap:14px;margin:16px 0}
.counter{background:#fafafb;border:1px solid var(--border);border-radius:10px;
  padding:12px;text-align:center}
.counter>span{display:block;font-size:.8rem;color:var(--muted);margin-bottom:8px}
.stepper{display:flex;align-items:center;justify-content:center;gap:14px}
.stepper button{width:38px;height:38px;border-radius:50%;font-size:1.2rem;
  background:#ece9ff;color:var(--primary-dark);padding:0;line-height:1}
.stepper output{font-size:1.4rem;font-weight:700;min-width:2ch}

/* ---------------- Pod-Liste ---------------- */
.pod-list{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.pod-item{display:flex;justify-content:space-between;align-items:center;gap:10px;
  background:#fafafb;border:1px solid var(--border);border-radius:10px;padding:12px 14px}
.pod-item.connected{background:#eefaf1;border-color:#bfe8cd}
.pod-item.error{background:#fdeded;border-color:#f0c5c7}
.pod-name{font-weight:600}
.pod-status{font-size:.82rem;color:var(--muted)}
.pod-role{font-size:.78rem;color:var(--primary);margin-left:8px}
.empty-state{color:var(--muted);text-align:center;padding:14px;font-size:.9rem}

/* ---------------- Gespeicherte Aktivitäten ---------------- */
.saved-list{display:flex;flex-direction:column;gap:6px;margin:12px 0;max-height:220px;
  overflow-y:auto}
.saved-item{display:flex;justify-content:space-between;align-items:center;gap:10px;
  padding:8px 12px;border:1px solid var(--border);border-radius:8px;
  background:#fafafb;cursor:pointer;font-size:.9rem}
.saved-item.selected{border-color:var(--primary);background:#f2efff}
.saved-item .meta{color:var(--muted);font-size:.78rem}

/* ---------------- Stationen ---------------- */
.station-block{border:1px solid var(--border);border-radius:10px;
  padding:16px;margin-bottom:14px;background:#fcfcfd}
.station-title{display:flex;justify-content:space-between;align-items:center;
  margin-bottom:12px;font-weight:700;color:var(--primary-dark)}
.station-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:14px}

.subgroup{display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.subgroup header{font-size:.82rem;font-weight:600;color:var(--muted)}
.subgroup .pills,.subgroup .slider-row{align-self:stretch}

/* Slider */
.slider-row{display:flex;align-items:center;gap:10px;width:100%}
.slider-row input[type=range]{flex:1;accent-color:var(--primary);min-width:0}
.slider-row output{min-width:52px;text-align:right;font-variant-numeric:tabular-nums;
  font-weight:600;font-size:.9rem}
.hint{font-size:.78rem;color:var(--muted)}

/* Farb-Auswahl */
.color-chips{display:flex;gap:8px;flex-wrap:wrap}
.color-chip{width:34px;height:34px;border-radius:50%;border:3px solid transparent;
  cursor:pointer;padding:0;transition:transform .1s,border-color .1s}
.color-chip:hover{transform:scale(1.1)}
.color-chip.active{border-color:var(--text)}
.color-custom-row{display:flex;align-items:center;gap:8px;margin-top:6px}
.color-custom-row input[type=color]{width:42px;height:34px;border:1px solid var(--border);
  border-radius:8px;background:#fff;padding:2px;cursor:pointer}

/* Radio-Pills */
.pills{display:flex;gap:6px;flex-wrap:wrap}
.pills label{flex-direction:row;align-items:center;gap:0;cursor:pointer;
  border:1px solid var(--border);border-radius:20px;padding:6px 14px;
  font-size:.85rem;color:var(--text);background:#fff;user-select:none}
.pills input{position:absolute;opacity:0;pointer-events:none}
.pills label:has(input:checked){background:var(--primary);color:#fff;
  border-color:var(--primary)}

/* ---------------- Live-Statistik ---------------- */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));
  gap:10px;margin-bottom:14px}
.stat{background:#fafafb;border:1px solid var(--border);border-radius:10px;
  padding:10px;text-align:center}
.stat span{display:block;font-size:.72rem;color:var(--muted);margin-bottom:4px}
.stat strong{font-size:1.3rem;color:var(--primary-dark)}

#chartCanvas{display:block;width:100%;max-width:640px;margin:0 auto;
  border:1px solid var(--border);border-radius:8px;background:#fff}

/* ---------------- Tabellen / Verlauf ---------------- */
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{padding:10px;text-align:left;border-bottom:1px solid var(--border)}
th{color:var(--muted);font-weight:600;font-size:.8rem;text-transform:uppercase;
  letter-spacing:.03em;white-space:nowrap}
tbody tr:hover{background:#f7f7fb}
td.num{text-align:right;font-variant-numeric:tabular-nums}

/* ---------------- Status-Meldungen ---------------- */
#statusMessage{position:fixed;bottom:20px;left:50%;
  transform:translateX(-50%) translateY(20px);
  background:#2b2d33;color:#fff;padding:12px 24px;border-radius:10px;z-index:1000;
  opacity:0;transition:opacity .3s,transform .3s;pointer-events:none;
  max-width:90vw;font-size:.92rem;box-shadow:0 4px 14px rgba(0,0,0,.25)}
#statusMessage.visible{opacity:1;transform:translateX(-50%) translateY(0)}
#statusMessage.error{background:var(--danger)}
#statusMessage.success{background:var(--success)}

.alert{border-radius:10px;padding:12px 16px;margin-bottom:14px;font-size:.92rem}
.alert.error{background:#fdeded;color:#a63c40;border:1px solid #f0c5c7}
.alert.success{background:#eefaf1;color:#2a7d4f;border:1px solid #bfe8cd}
.alert.warning{background:#fff4e0;color:#8a5a13;border:1px solid #f3ddb5}

/* ---------------- Login ---------------- */
body.login-page{display:flex;min-height:100vh;align-items:center;
  justify-content:center;background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  padding:1rem}
.login-card{background:var(--panel);border-radius:16px;padding:32px;
  width:min(92vw,400px);max-height:100%;overflow-y:auto;
  box-shadow:0 10px 40px rgba(0,0,0,.25)}
.login-card h1{margin:0 0 4px;font-size:1.3rem;color:var(--primary)}
.login-card p{margin:.25rem 0 .5rem}
.login-card form{display:flex;flex-direction:column;gap:12px;margin-top:18px}
.login-card button[type=submit]{width:100%}
.login-card input{letter-spacing:.05em}
.login-card #code,.login-card input[name=code]{text-transform:uppercase;
  font-size:1.4rem;text-align:center;letter-spacing:.35em;font-weight:700}
.login-card a{color:var(--primary);text-decoration:none;font-weight:600}
.login-card a:hover{text-decoration:underline}
.secondary-form{margin-top:10px;text-align:center}

/* ---------------- Sonstiges ---------------- */
.muted{color:var(--muted)}
.small{font-size:.82rem}
.hidden{display:none!important}
a.plain{color:var(--text);text-decoration:none}

.spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(0,0,0,.15);
  border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;
  vertical-align:-3px;margin-right:6px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------------- Admin ---------------- */
.fresh-secret{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:1.15rem;letter-spacing:.12em;background:#f2efff;color:var(--primary-dark);
  padding:14px 16px;border-radius:10px;word-break:break-all;margin:10px 0;user-select:all}
.code-input{width:140px;padding:10px;border:2px solid var(--primary);border-radius:8px;
  font-size:1.4rem;text-align:center;letter-spacing:.3em;text-transform:uppercase}
.admin-actions{white-space:nowrap}
.admin-actions form{display:inline-block;margin:2px 4px 2px 0}
.admin-actions details{display:inline-block}
.admin-actions details form{display:flex;gap:6px;margin-top:6px}
.admin-actions input[type=password]{width:130px;padding:6px 8px;
  border:1px solid var(--border);border-radius:6px;font-size:.85rem}
.admin-form .row{align-items:flex-end}
.admin-actions summary{cursor:pointer;list-style:none}
.admin-actions summary:hover{color:var(--primary)}
td.admin-actions{vertical-align:top}

/* ---------------- Responsive ---------------- */
@media (max-width:640px){
  .layout{padding:12px;gap:14px}
  .panel{padding:14px}
  .topbar{padding:10px 14px;flex-wrap:wrap;gap:8px}
  .start-row{flex-wrap:nowrap}
  .station-grid{grid-template-columns:1fr}
  .stepper button{width:44px;height:44px}   /* Touchgrösse */
  .slider-row output{min-width:60px}
  .counter-grid{grid-template-columns:repeat(2,1fr)}
  th,td{padding:8px 6px}
  .user-box .muted{display:none}             /* E-Mail auf Handy ausblenden */
}