:root {
    --honey:    #D4820A;
    --amber:    #B8620A;
    --gold:     #F0A830;
    --cream:    #F5E6C8;
    --dark:     #1A1208;
    --deep:     #241A0A;
    --mid:      #3D2B10;
    --warm:     #5C3D18;
    --text:     #E8D5AA;
    --muted:    #9A7D50;
    --border:   rgba(212,130,10,0.25);
    --success:  #6A9E3C;
    --radius:   6px;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  html { scroll-behavior: smooth; }

  body {
    font-family: 'Crimson Pro', Georgia, serif;
    background: var(--dark);
    color: var(--text);
    min-height: 100vh;
    font-size: 18px;
    line-height: 1.6;
  }

  /* ── Background texture ── */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
      radial-gradient(ellipse at 20% 20%, rgba(212,130,10,0.06) 0%, transparent 60%),
      radial-gradient(ellipse at 80% 80%, rgba(184,98,10,0.08) 0%, transparent 60%),
      repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(255,255,255,0.005) 2px,
        rgba(255,255,255,0.005) 4px
      );
    pointer-events: none;
    z-index: 0;
  }

  /* ── Header ── */
  header {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 3rem 2rem 2rem;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(to bottom, rgba(36,26,10,0.95), transparent);
  }

  .hex-icon {
    width: 64px; height: 64px;
    margin: 0 auto 1.2rem;
    display: flex; align-items: center; justify-content: center;
    position: relative;
  }
  .hex-icon svg { width: 64px; height: 64px; }

  h1 {
    font-family: 'Cinzel', serif;
    font-size: clamp(1.8rem, 5vw, 3rem);
    font-weight: 600;
    color: var(--gold);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    line-height: 1.2;
  }
  h1 span { display: block; font-size: 0.45em; color: var(--muted); font-weight: 400; letter-spacing: 0.2em; margin-top: 0.3em; }

  /* ── Language toggle ── */
  .lang-toggle {
    position: absolute;
    top: 1.5rem; right: 1.5rem;
    display: flex; gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
  }
  .lang-btn {
    background: transparent;
    border: none;
    color: var(--muted);
    font-family: 'Cinzel', serif;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    padding: 0.4rem 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
  }
  .lang-btn.active { background: var(--honey); color: var(--dark); }

  /* ── Main layout ── */
  main { position: relative; z-index: 1; max-width: 860px; margin: 0 auto; padding: 2rem 1.5rem 4rem; }

  /* ── Pages ── */
  .page { display: none; animation: fadeIn 0.4s ease; }
  .page.active { display: block; }
  @keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

  /* ── Section card ── */
  .card {
    background: rgba(61,43,16,0.4);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.8rem 2rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(4px);
  }

  .card-title {
    font-family: 'Cinzel', serif;
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--honey);
    margin-bottom: 1.4rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--border);
  }

  /* ── Form fields ── */
  .field { margin-bottom: 1.1rem; display: grid; grid-template-columns: 1fr auto; gap: 0.8rem; align-items: center; }
  .field-label {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.95rem; color: var(--text);
  }
  .field-right { display: flex; gap: 0; }

  input[type="number"] {
    width: 120px;
    background: rgba(26,18,8,0.7);
    border: 1px solid var(--border);
    border-right: none;
    border-radius: var(--radius) 0 0 var(--radius);
    color: var(--gold);
    font-family: 'Crimson Pro', serif;
    font-size: 1.1rem;
    font-weight: 600;
    padding: 0.45rem 0.7rem;
    text-align: right;
    transition: border-color 0.2s;
    -moz-appearance: textfield;
  }
  input[type="number"]::-webkit-outer-spin-button,
  input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }
  input[type="number"]:focus { outline: none; border-color: var(--honey); }

  .unit {
    background: rgba(92,61,24,0.5);
    border: 1px solid var(--border);
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--muted);
    font-size: 0.8rem;
    padding: 0.45rem 0.6rem;
    white-space: nowrap;
    display: flex; align-items: center;
  }

  /* ── Tooltip ── */
  .tip {
    display: inline-flex; align-items: center; justify-content: center;
    width: 18px; height: 18px;
    border: 1px solid var(--muted);
    border-radius: 50%;
    color: var(--muted);
    font-size: 0.65rem;
    font-family: 'Cinzel', serif;
    cursor: help;
    position: relative;
    flex-shrink: 0;
    transition: all 0.2s;
  }
  .tip:hover { border-color: var(--honey); color: var(--honey); }
  .tip:hover .tip-text { display: block; }
  .tip-text {
    display: none;
    position: absolute;
    left: 24px; top: 50%;
    transform: translateY(-50%);
    background: var(--deep);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: 'Crimson Pro', serif;
    font-size: 0.82rem;
    font-weight: 300;
    line-height: 1.4;
    padding: 0.5rem 0.8rem;
    width: 220px;
    z-index: 100;
    white-space: normal;
  }

  /* ── Kalkulation toggle ── */
  .toggle-row {
    display: flex; align-items: center; gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem 1.5rem;
    background: rgba(26,18,8,0.5);
    border: 1px solid var(--border);
    border-radius: var(--radius);
  }
  .toggle-label { font-family: 'Cinzel', serif; font-size: 0.8rem; letter-spacing: 0.15em; color: var(--muted); text-transform: uppercase; }
  .switch { position: relative; display: inline-block; width: 44px; height: 24px; }
  .switch input { opacity: 0; width: 0; height: 0; }
  .slider {
    position: absolute; inset: 0;
    background: var(--mid);
    border: 1px solid var(--border);
    border-radius: 24px;
    cursor: pointer;
    transition: 0.3s;
  }
  .slider::before {
    content: '';
    position: absolute;
    width: 18px; height: 18px;
    left: 2px; top: 2px;
    background: var(--muted);
    border-radius: 50%;
    transition: 0.3s;
  }
  .switch input:checked + .slider { background: rgba(212,130,10,0.3); border-color: var(--honey); }
  .switch input:checked + .slider::before { transform: translateX(20px); background: var(--honey); }

  /* ── Buttons ── */
  .btn-primary {
    display: block; width: 100%;
    background: linear-gradient(135deg, var(--amber), var(--honey));
    border: none;
    border-radius: var(--radius);
    color: var(--dark);
    font-family: 'Cinzel', serif;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    padding: 1rem;
    cursor: pointer;
    margin-top: 1.5rem;
    transition: all 0.25s;
    box-shadow: 0 4px 20px rgba(212,130,10,0.2);
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212,130,10,0.35); }
  .btn-primary:active { transform: translateY(0); }

  .btn-secondary {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--muted);
    font-family: 'Cinzel', serif;
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 0.6rem 1.2rem;
    cursor: pointer;
    transition: all 0.2s;
  }
  .btn-secondary:hover { border-color: var(--honey); color: var(--honey); }

  .btn-row { display: flex; gap: 1rem; justify-content: space-between; align-items: center; flex-wrap: wrap; margin-top: 2rem; }

  /* ── Results ── */
  .result-block { margin-bottom: 0.6rem; }

  .result-grid {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 0 1rem;
    align-items: baseline;
  }
  .result-grid .r-label { color: var(--muted); font-size: 0.9rem; }
  .result-grid .r-val { color: var(--gold); font-weight: 600; font-size: 1.1rem; text-align: right; }
  .result-grid .r-unit { color: var(--muted); font-size: 0.8rem; min-width: 40px; }

  .divider { border: none; border-top: 1px solid var(--border); margin: 1rem 0; }

  /* ── Step table ── */
  .step-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
  .step-table th {
    font-family: 'Cinzel', serif;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted);
    padding: 0.5rem 0.8rem;
    border-bottom: 1px solid var(--border);
    text-align: right;
  }
  .step-table th:first-child { text-align: left; }
  .step-table td { padding: 0.65rem 0.8rem; border-bottom: 1px solid rgba(212,130,10,0.08); text-align: right; }
  .step-table td:first-child { text-align: left; color: var(--honey); font-weight: 600; }
  .step-table tr:last-child td { border-bottom: none; }
  .step-table .last-step td { color: var(--amber); font-style: italic; }
  .step-table .last-step td:first-child { color: var(--amber); }

  /* ── Kalkulation results ── */
  .calc-section { display: none; }
  .calc-section.visible { display: block; }

  .geb-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; margin-top: 0.5rem; }
  .geb-table th {
    font-family: 'Cinzel', serif; font-size: 0.65rem; letter-spacing: 0.15em;
    text-transform: uppercase; color: var(--muted);
    padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border); text-align: right;
  }
  .geb-table th:first-child { text-align: left; }
  .geb-table td { padding: 0.5rem 0.6rem; border-bottom: 1px solid rgba(212,130,10,0.06); text-align: right; }
  .geb-table td:first-child { text-align: left; color: var(--text); }
  .geb-table .profit { color: var(--success); font-weight: 600; }

  /* ── PDF note ── */
  .pdf-note {
    font-size: 0.82rem; color: var(--muted); font-style: italic;
    text-align: center; margin-top: 0.5rem;
  }

  /* ── Endvolumen highlight ── */
  .endvol {
    display: flex; justify-content: space-between; align-items: baseline;
    background: rgba(212,130,10,0.08);
    border: 1px solid rgba(212,130,10,0.3);
    border-radius: var(--radius);
    padding: 0.7rem 1rem;
    margin-top: 1rem;
  }
  .endvol span:first-child { color: var(--muted); font-size: 0.9rem; }
  .endvol span:last-child { color: var(--gold); font-size: 1.3rem; font-weight: 600; }

  /* ── Gebinde-Tabelle Inputs ── */
  #gebTable input { background:rgba(26,18,8,0.7);border:1px solid var(--border);border-radius:3px;color:var(--gold);font-family:'Crimson Pro',serif;font-size:0.9rem;padding:0.25rem 0.4rem;text-align:right;-moz-appearance:textfield; }
  #gebTable input::-webkit-outer-spin-button,#gebTable input::-webkit-inner-spin-button{-webkit-appearance:none;}
  #gebTable input[readonly]{color:var(--muted);cursor:default;}
  #gebTable input[type="text"]{background:rgba(26,18,8,0.7);border:1px solid var(--border);border-radius:3px;color:var(--text);font-family:'Crimson Pro',serif;font-size:0.9rem;padding:0.25rem 0.4rem;-moz-appearance:textfield;}

  /* ── Responsive ── */
  @media (max-width: 600px) {
    .card { padding: 1.2rem 1rem; }
    .field { grid-template-columns: 1fr; gap: 0.4rem; }
    .field-right { justify-content: flex-start; }
    input[type="number"] { width: 100px; }
    h1 { font-size: 1.6rem; }
    .lang-toggle { top: 1rem; right: 1rem; }
    .step-table th, .step-table td { padding: 0.5rem 0.4rem; font-size: 0.82rem; }
  }

  /* ── Print styles ── */
  @media print {
    body { background: white !important; color: black !important; }
    body::before { display: none; }
    header { background: white !important; border-bottom: 2px solid #D4820A; }
    h1, .card-title { color: #7B3F00 !important; }
    .btn-row, .lang-toggle, #page1 { display: none !important; }
    #page2 { display: block !important; }
    .card { border: 1px solid #D4820A; background: white !important; break-inside: avoid; }
    .r-val, .r-label { color: black !important; }
    .step-table td, .step-table th { color: black !important; border-color: #ccc !important; }
    .step-table td:first-child { color: #7B3F00 !important; }
    .endvol { background: #FFF8E7 !important; border-color: #D4820A !important; }
    .endvol span { color: #7B3F00 !important; }
    .profit { color: #3A7D00 !important; }
    input { border: none !important; border-bottom: 1px solid #ccc !important; }
  }