:root {
  --slate-950: #020617;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-600: #d97706;
  --text: #f8fafc;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: linear-gradient(180deg, #1e2937 0%, var(--slate-950) 100%);
  color: var(--text);
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--slate-900);
  border-bottom: 1px solid var(--slate-700);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand h1 {
  margin: 0;
  font-size: 1.35rem;
}

.brand p {
  margin: 2px 0 0;
  color: var(--slate-400);
  font-size: 0.85rem;
}

.header-actions { display: flex; gap: 8px; }

.text-btn, .btn {
  border: none;
  cursor: pointer;
  font: inherit;
}

.text-btn {
  background: transparent;
  color: var(--amber-400);
  padding: 8px 12px;
  border-radius: 10px;
}

.text-btn:hover { background: rgba(251, 191, 36, 0.1); }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
}

.panel {
  background: linear-gradient(180deg, #1e2937, var(--slate-950));
  border: 1px solid var(--slate-700);
  border-radius: 24px;
  padding: 16px;
  margin-bottom: 16px;
}

.section-title {
  color: var(--amber-400);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.intro {
  margin: 0 0 16px;
  line-height: 1.5;
  font-size: 0.95rem;
}

.muted { color: var(--slate-400); }

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 12px;
  align-items: end;
}

.control-field label {
  display: block;
  color: var(--slate-400);
  font-size: 0.85rem;
  margin-bottom: 6px;
}

select, input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--slate-600);
  background: var(--slate-800);
  color: var(--text);
  font: inherit;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 16px;
  font-weight: 600;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--amber-600);
  color: #111;
  white-space: nowrap;
}

.btn-primary:hover:not(:disabled) { background: var(--amber-500); }

.btn-secondary {
  background: var(--slate-800);
  color: var(--text);
  border: 1px solid var(--slate-600);
  flex: 1;
}

.btn-secondary:hover:not(:disabled) { background: var(--slate-700); }

.action-row {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.empty-msg {
  text-align: center;
  color: var(--slate-500);
  margin: 28px 0;
}

.sheet-header h2 {
  margin: 0 0 4px;
  color: var(--amber-400);
  font-size: 1.15rem;
}

.sheet-meta {
  margin: 0 0 14px;
  color: var(--slate-400);
  font-size: 0.85rem;
}

.table-scroll {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--slate-700);
}

.key-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  min-width: 920px;
}

.key-table th {
  text-align: left;
  background: var(--slate-800);
  color: var(--amber-400);
  font-weight: 600;
  padding: 10px 8px;
  border-bottom: 1px solid var(--slate-600);
  white-space: nowrap;
  position: sticky;
  top: 0;
}

.key-table td {
  padding: 8px;
  border-bottom: 1px solid var(--slate-800);
  vertical-align: top;
  color: var(--slate-400);
}

.key-table tbody tr:hover td {
  background: rgba(30, 41, 59, 0.55);
}

.key-table .row-dora td {
  background: rgba(251, 191, 36, 0.04);
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.02em;
}

.col-day {
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.col-ukw { color: var(--amber-400); font-weight: 600; }

.col-dora {
  font-size: 0.72rem;
  max-width: 220px;
  line-height: 1.35;
  word-break: break-word;
}

.col-stecker {
  font-size: 0.78rem;
  white-space: nowrap;
}

.footer-note {
  margin: 12px 0 0;
  text-align: center;
  color: var(--slate-500);
  font-size: 0.75rem;
  line-height: 1.45;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.72);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
}

.modal.open { display: flex; }

.modal-card {
  width: min(720px, 100%);
  max-height: 90vh;
  overflow: auto;
  background: var(--slate-900);
  border: 1px solid var(--slate-700);
  border-radius: 20px;
  padding: 20px;
}

.modal-card h2 {
  margin: 0 0 8px;
  color: var(--amber-400);
}

.modal-card h3 {
  margin: 16px 0 8px;
  font-size: 1rem;
}

.modal-card p, .modal-card li {
  color: var(--slate-400);
  line-height: 1.5;
}

.modal-card ul { padding-left: 1.2rem; }

.modal-card code {
  font-family: ui-monospace, monospace;
  color: var(--amber-400);
  font-size: 0.9em;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

a { color: var(--amber-400); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(20px);
  background: var(--slate-800);
  border: 1px solid var(--slate-600);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 12px;
  opacity: 0;
  pointer-events: none;
  transition: 0.2s ease;
  z-index: 200;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 720px) {
  .controls {
    grid-template-columns: 1fr 1fr;
  }
  .control-actions {
    grid-column: 1 / -1;
  }
  .control-actions .btn {
    width: 100%;
  }
}

@media print {
  body {
    background: #fff;
    color: #111;
  }

  .no-print { display: none !important; }

  main {
    max-width: none;
    padding: 0;
  }

  .panel {
    background: none;
    border: none;
    border-radius: 0;
    padding: 0;
    margin: 0;
  }

  .sheet-header h2 {
    color: #111;
    font-size: 14pt;
  }

  .sheet-meta, .footer-note {
    color: #333;
    font-size: 9pt;
  }

  .table-scroll {
    border: 1px solid #999;
    overflow: visible;
  }

  .key-table {
    min-width: 0;
    font-size: 8pt;
  }

  .key-table th {
    background: #eee;
    color: #111;
    position: static;
  }

  .key-table td {
    color: #111;
    border-bottom: 1px solid #ccc;
  }

  .key-table .row-dora td {
    background: #f7f7f7;
  }

  .col-ukw { color: #111; }

  .col-dora {
    max-width: none;
    font-size: 7pt;
  }
}