:root{
    --bg: #000;
    --fg: #fff;
    --muted: rgba(255,255,255,.72);
    --muted2: rgba(255,255,255,.55);
    --line: rgba(255,255,255,.12);
    --card: rgba(255,255,255,.06);
    --card2: rgba(255,255,255,.09);
    --focus: rgba(255,255,255,.28);
    --radius: 14px;
    --radius2: 12px;
    --pad: 16px;
    --max: 740px;
    --shadow: 0 10px 30px rgba(0,0,0,.45);
    --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  }
  
  *{ box-sizing: border-box; }
  html,body{ height:100%; }
  body{
    margin:0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  
  a{ color: var(--fg); text-decoration: none; }
  a:hover{ text-decoration: underline; }
  
  .app{
    max-width: var(--max);
    margin: 0 auto;
    padding: 18px 14px 40px;
  }
  
  .header{
    padding: 6px 2px 14px;
  }
  .header__title{
    font-size: 22px;
    font-weight: 700;
    letter-spacing: .3px;
  }
  .header__subtitle{
    margin-top: 6px;
    font-size: 13px;
    color: var(--muted);
    line-height: 1.4;
  }
  
  .panel{
    margin-top: 14px;
    padding: var(--pad);
    border: 1px solid var(--line);
    background: linear-gradient(180deg, var(--card), rgba(255,255,255,.03));
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }
  
  .panel + .panel{ margin-top: 14px; }
  
  .row{
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
  }
  
  .row--space{
    justify-content: space-between;
  }
  
  .sectionTitle{
    margin: 0 0 10px 2px;
    font-size: 12px;
    color: var(--muted2);
    letter-spacing: .14em;
    text-transform: uppercase;
  }
  
  .btn{
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 48px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: rgba(255,255,255,.06);
    color: var(--fg);
    font-size: 16px;
    font-weight: 600;
    letter-spacing: .2px;
    cursor: pointer;
    user-select: none;
    transition: transform .06s ease, background .15s ease, border-color .15s ease;
    -webkit-tap-highlight-color: transparent;
  }
  .btn:active{ transform: scale(.99); }
  
  .btn--primary{
    background: rgba(255,255,255,.10);
    border-color: rgba(255,255,255,.18);
  }
  .btn--ghost{
    background: transparent;
  }
  
  .btn--small{
    min-height: 40px;
    padding: 10px 12px;
    font-size: 14px;
  }
  
  .btn[disabled]{
    opacity: .45;
    cursor: not-allowed;
  }
  
  .btn:focus-visible{
    outline: 2px solid var(--focus);
    outline-offset: 2px;
  }
  
  .chipGrid{
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  
  @media (min-width: 520px){
    .chipGrid{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
  }
  
  .colorGrid{
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
  }
  
  .colorBtn{
    width: 100%;
    min-height: 44px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,.18);
    background: rgba(255,255,255,.06);
    color: var(--fg);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .04em;
    cursor: pointer;
    user-select: none;
    position: relative;
    overflow: hidden;
    -webkit-tap-highlight-color: transparent;
  }
  .colorBtn::before{
    content:"";
    position:absolute;
    inset:0;
    background: var(--swatch, rgba(255,255,255,.12));
    opacity: .22;
  }
  .colorBtn span{
    position: relative;
    z-index: 1;
  }
  
  .is-selected{
    border-color: rgba(255,255,255,.55) !important;
    box-shadow: 0 0 0 2px rgba(255,255,255,.18) inset;
  }
  
  .meta{
    margin-top: 10px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.45;
  }
  
  .footer{
    margin-top: 14px;
    padding: 0 2px;
  }
  .footer__hint{
    color: var(--muted2);
    font-size: 12px;
    line-height: 1.5;
  }
  
  /* Plan / Stundenplan */
  .planHeader{
    display:flex;
    align-items:flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
  }
  .planHeader__left{
    display:flex;
    flex-direction: column;
    gap: 4px;
  }
  .kicker{
    font-size: 12px;
    color: var(--muted2);
    text-transform: uppercase;
    letter-spacing: .14em;
  }
  .bigTitle{
    font-size: 18px;
    font-weight: 800;
    letter-spacing: .2px;
  }
  .badges{
    display:flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 6px;
  }
  .badge{
    display:inline-flex;
    align-items:center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255,255,255,.06);
    font-size: 12px;
    color: var(--muted);
  }
  .dot{
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: var(--swatch, rgba(255,255,255,.5));
    outline: 1px solid rgba(255,255,255,.25);
  }
  
  /* Mobile-first “Stundenplan”: Zeit links, Details rechts */
  .timetable{
    margin-top: 14px;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--line);
  }
  .tRow{
    display: grid;
    grid-template-columns: 92px 1fr;
    gap: 0;
    border-top: 1px solid var(--line);
    background: rgba(255,255,255,.03);
  }
  .tRow:first-child{ border-top: 0; }
  .tTime{
    padding: 12px 12px;
    border-right: 1px solid var(--line);
    background: rgba(255,255,255,.04);
    font-size: 12px;
    color: var(--muted);
    line-height: 1.25;
  }
  .tCell{
    padding: 12px 12px;
  }
  .tBlock{
    font-size: 11px;
    color: var(--muted2);
    text-transform: uppercase;
    letter-spacing: .14em;
  }
  .tTitle{
    margin-top: 6px;
    font-size: 15px;
    font-weight: 750;
    line-height: 1.25;
  }
  .tRoom{
    margin-top: 8px;
    font-size: 12px;
    color: var(--muted);
    display:flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
  }
  .tRoom code{
    color: var(--fg);
    background: rgba(255,255,255,.06);
    border: 1px solid var(--line);
    padding: 2px 8px;
    border-radius: 999px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono","Courier New", monospace;
    font-size: 12px;
  }
  
  /* Desktop: echte Tabelle (optional) */
  @media (min-width: 860px){
    .app{ max-width: 980px; }
    .tRow{
      grid-template-columns: 140px 240px 1fr 220px;
    }
    .tTime{
      border-right: 1px solid var(--line);
    }
    .tCell{
      display:flex;
      flex-direction: column;
    }
    .tCell--block{
      border-right: 1px solid var(--line);
    }
    .tCell--title{
      border-right: 1px solid var(--line);
    }
  }
  
  /* Utility */
  .hr{
    height: 1px;
    background: var(--line);
    margin: 12px 0;
  }
  .notice{
    padding: 12px 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius2);
    background: rgba(255,255,255,.04);
    color: var(--muted);
    font-size: 13px;
    line-height: 1.45;
  }
  
  /* Back Arrow Button */
.iconBtn{
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 40px;
    padding: 8px 10px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: rgba(255,255,255,.04);
    color: var(--fg);
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
  }
  .iconBtn:active{ transform: scale(.99); }
  .iconBtn:focus-visible{
    outline: 2px solid var(--focus);
    outline-offset: 2px;
  }
  .iconBtn__icon{
    width: 18px;
    height: 18px;
    display: inline-block;
  }
  .iconBtn__label{
    font-size: 13px;
    font-weight: 650;
    letter-spacing: .2px;
  }
  
  /* Größerer Abstand bei gestapelten Buttons (z.B. Startseite) */
.btnStack{
    display: flex;
    flex-direction: column;
    gap: 18px; /* größerer Abstand Berlin/Stuttgart */
  }

  
  /* Mobile Fix: Plan-Grid sauber stapeln + Inhalt prominenter/größer */
@media (max-width: 859px){
    .tRow{
      /* Zeit links schmaler, mehr Platz rechts */
      grid-template-columns: 78px 1fr;
      grid-auto-rows: auto;
    }
  
    /* Zeitspalte über alle Detail-Zeilen spannen */
    .tTime{
      grid-row: 1 / span 3;
      align-self: stretch;
    }
  
    /* Alle Detailzellen konsequent in die rechte Spalte */
    .tCell{
      grid-column: 2;
    }
  
    /* Trenner/logik sauber */
    .tCell--block,
    .tCell--title{
      border-right: 0 !important;
    }
  
    .tCell--block{
      border-bottom: 1px solid var(--line);
    }
  
    /* Inhalt visuell „größer“: mehr Padding + leicht stärkerer Hintergrund */
    .tCell--title{
      border-bottom: 1px solid var(--line);
      padding-top: 18px;
      padding-bottom: 18px;
      background: rgba(255,255,255,.05);
    }
  
    /* Inhaltstext etwas größer/lesbarer */
    .tCell--title .tTitle{
      font-size: 16px;
      line-height: 1.32;
    }
  }

  /* Deutlichere Trennlinien zwischen den Zeitblöcken (Rows) */
.timetable{
    border-color: rgba(255,255,255,.28); /* Rahmen etwas stärker */
  }
  
  .tRow{
    border-top: 4px solid rgba(255,255,255,.38); /* dickere, hellere Linie zwischen Blöcken */
  }
  
  /* Optional: auch innerhalb eines Blocks (mobile) klarer trennen */
  @media (max-width: 859px){
    .tCell--block{
      border-bottom: 2px solid rgba(255,255,255,.22) !important;
    }
    .tCell--title{
      border-bottom: 2px solid rgba(255,255,255,.22) !important;
    }
    .tTime{
      border-right: 2px solid rgba(255,255,255,.22) !important;
    }
  }