:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --card-bg: #ffffff;
  --border: #d8dce1;
  --text: #1c2126;
  --muted: #5a6472;
  --accent: #2f6fed;
  --accent-contrast: #ffffff;
  --ok: #1a7f37;
  --warn: #b26a00;
  --error: #c4302b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --card-bg: #1d2128;
    --border: #333a44;
    --text: #e7eaee;
    --muted: #98a2ae;
    --accent: #5b8cff;
    --accent-contrast: #0b1220;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
}

header, main, footer { max-width: 1100px; margin: 0 auto; padding: 1rem 1.5rem; }

header h1 { margin-bottom: 0.2rem; }
.subtitle, .hint { color: var(--muted); font-size: 0.92rem; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

.card h2 { margin-top: 0; }

.hidden { display: none !important; }

.grid-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem 1.25rem;
  margin-bottom: 0.75rem;
}

.grid-form label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.9rem;
}

.grid-form label small { color: var(--muted); font-weight: normal; }

input[type="text"], input[type="password"], input[type="number"], select {
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
}

button {
  background: var(--accent);
  color: var(--accent-contrast);
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  cursor: pointer;
  margin-right: 0.5rem;
}

button:disabled { opacity: 0.5; cursor: not-allowed; }

button:hover:not(:disabled) { filter: brightness(1.08); }

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.3rem 0.7rem;
  font-size: 0.85rem;
}

.btn-danger { background: var(--error); }

.filter-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 0.5rem 0;
}
.filter-row .checkbox-row { margin: 0; }

.file-btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-contrast);
  border-radius: 6px;
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-size: 0.95rem;
}
.file-btn input { display: none; }

.status-msg { margin-left: 0.5rem; font-size: 0.9rem; }
.status-msg.ok { color: var(--ok); }
.status-msg.warn { color: var(--warn); }
.status-msg.error { color: var(--error); }

.counts { margin-top: 0.5rem; font-size: 0.9rem; color: var(--muted); }

.checkbox-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin: 0.5rem 0 1rem;
}
.checkbox-row label { display: flex; align-items: center; gap: 0.35rem; font-size: 0.9rem; white-space: nowrap; }

.mapping-columns {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
}

/* Für Namens-/Kurswahl-Spaltenauswahl in Schritt 3: Forms-Spaltenüberschriften können sehr lang
   sein, daher ein Eintrag pro Zeile mit Zeilenumbruch statt nebeneinander wie bei .checkbox-row. */
.column-picker-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin: 0.5rem 0 1rem;
  min-width: 0;
}
.column-picker-list label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.9rem;
  white-space: normal;
  overflow-wrap: break-word;
  min-width: 0;
}
.column-picker-list input { flex-shrink: 0; margin-top: 0.2rem; }

.column-prefix-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0.75rem 0;
}
.column-prefix-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.column-prefix-row .column-prefix-header {
  flex: 1 1 300px;
  min-width: 0;
  overflow-wrap: break-word;
  font-size: 0.88rem;
  color: var(--muted);
}
.column-prefix-row input {
  width: 6rem;
  flex-shrink: 0;
}

.table-scroll {
  max-height: 480px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin: 0.75rem 0;
}

table { border-collapse: collapse; width: 100%; font-size: 0.88rem; }
thead th {
  position: sticky; top: 0;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  text-align: left;
  padding: 0.4rem 0.6rem;
}
tbody td { padding: 0.3rem 0.6rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:hover { background: color-mix(in srgb, var(--accent) 6%, transparent); }

.th-sort-btn {
  background: none;
  border: none;
  color: var(--text);
  font-weight: 600;
  font-size: inherit;
  padding: 0;
  margin: 0;
  cursor: pointer;
  white-space: nowrap;
}
.th-sort-btn:hover { color: var(--accent); }
.th-sort-btn.sort-active { color: var(--accent); }

.match-input { width: 100%; min-width: 220px; }
.match-input.invalid { border-color: var(--error); }
.match-input.auto { border-color: var(--ok); }

#autosplit-table .autosplit-zielkurs-input,
#autosplit-table .autosplit-bezeichnung-input { min-width: 180px; }
#autosplit-table select.autosplit-fach { min-width: 140px; }
#autosplit-table input.autosplit-kursart { min-width: 100px; }
#autosplit-table input.autosplit-wstd { width: 4rem; min-width: 0; }

#autosplit-klasse-table .autosplit-klasse-zielkurs-input,
#autosplit-klasse-table .autosplit-klasse-bezeichnung-input { min-width: 180px; }
#autosplit-klasse-table select.autosplit-klasse-fach { min-width: 140px; }
#autosplit-klasse-table input.autosplit-klasse-kursart { min-width: 100px; }
#autosplit-klasse-table input.autosplit-klasse-wstd { width: 4rem; min-width: 0; }

.confidence-badge {
  display: inline-block;
  padding: 0.05rem 0.4rem;
  border-radius: 999px;
  font-size: 0.78rem;
}
.confidence-badge.high { background: color-mix(in srgb, var(--ok) 20%, transparent); color: var(--ok); }
.confidence-badge.low { background: color-mix(in srgb, var(--warn) 20%, transparent); color: var(--warn); }
.confidence-badge.none { background: color-mix(in srgb, var(--error) 20%, transparent); color: var(--error); }
.confidence-badge.saved { background: color-mix(in srgb, var(--accent) 20%, transparent); color: var(--accent); }

.log {
  max-height: 260px;
  overflow: auto;
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  margin-top: 0.5rem;
  white-space: pre-wrap;
}

footer { color: var(--muted); font-size: 0.85rem; text-align: center; }

.btn-create-kurs-row {
  background: transparent;
  color: var(--accent);
  border: 1px dashed var(--accent);
  padding: 0.15rem 0.5rem;
  font-size: 0.8rem;
  white-space: nowrap;
}

dialog#create-kurs-dialog {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  background: var(--card-bg);
  color: var(--text);
  max-width: 32rem;
  width: 90vw;
}
dialog#create-kurs-dialog::backdrop { background: rgba(0, 0, 0, 0.45); }
dialog#create-kurs-dialog h3 { margin-top: 0; }
dialog#create-kurs-dialog .grid-form { grid-template-columns: 1fr; }
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

#section-course-rewrite label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.9rem;
  max-width: 8rem;
  margin-bottom: 0.75rem;
}

.progress-bar {
  display: block;
  width: 100%;
  height: 0.6rem;
  margin: 0.5rem 0;
  border: none;
  border-radius: 999px;
  overflow: hidden;
  accent-color: var(--accent);
}
.progress-bar::-webkit-progress-bar { background: var(--bg); border-radius: 999px; }
.progress-bar::-webkit-progress-value { background: var(--accent); border-radius: 999px; }
.progress-bar::-moz-progress-bar { background: var(--accent); border-radius: 999px; }

.split-table input,
.split-table select { min-width: 220px; }
.split-table .row-actions { display: flex; gap: 0.35rem; white-space: nowrap; }
.split-table .row-actions button {
  padding: 0.2rem 0.5rem;
  font-size: 0.8rem;
  margin-right: 0;
}

#kurse-ohne-wahl-suche,
#leere-kurse-suche { width: 100%; max-width: 24rem; margin: 0.5rem 0; }
#kurse-ohne-wahl-table .btn-secondary,
#leere-kurse-table .btn-secondary { padding: 0.15rem 0.5rem; font-size: 0.8rem; }