:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --panel-bg: #ffffff;
  --text: #1c1e21;
  --muted: #6b7280;
  --border: #e2e4e8;
  --primary: #2563eb;
  --primary-text: #ffffff;
  --danger: #dc2626;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  background: var(--panel-bg);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
}

.topbar nav { display: flex; gap: 1rem; flex: 1; }
.topbar nav a { color: var(--muted); text-decoration: none; }
.topbar nav a:hover { color: var(--text); }

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.panel h2 { margin-top: 0; font-size: 1.05rem; }

.flash {
  padding: 0.6rem 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
}
.flash-success { background: #dcfce7; color: #166534; }
.flash-error { background: #fee2e2; color: #991b1b; }

input, select, button {
  font-size: 0.95rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel-bg);
  color: var(--text);
}

button {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
  cursor: pointer;
}
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.danger { background: var(--danger); border-color: var(--danger); }

.link-button {
  background: none;
  border: none;
  color: var(--primary);
  text-decoration: underline;
  padding: 0;
  cursor: pointer;
}
.link-button.danger { color: var(--danger); background: none; border: none; }

.add-link-form, .search-form, .inline-form, .move-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}
.move-form { flex-wrap: nowrap; }
.move-select { max-width: 10rem; }
.grow { flex: 1; min-width: 200px; }

.list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.bulk-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.link-table { width: 100%; border-collapse: collapse; margin-top: 0.75rem; }
.link-table th, .link-table td {
  text-align: left;
  padding: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.link-table a { color: var(--text); text-decoration: none; overflow-wrap: anywhere; }
.link-table a:hover { text-decoration: underline; }
.cell-muted { color: var(--muted); font-size: 0.85rem; }

#open-selected-fallback { margin: 0.6rem 0 0; line-height: 1.6; }
#open-selected-fallback a { color: var(--primary); overflow-wrap: anywhere; }

.login-box {
  max-width: 340px;
  margin: 4rem auto;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
}
.login-box form { display: flex; flex-direction: column; gap: 0.9rem; }
.login-box label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.9rem; }

.logout-form { margin: 0; }

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --panel-bg: #1f2226;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #2c2f34;
  }
}

@media (max-width: 640px) {
  .topbar-inner { flex-wrap: wrap; row-gap: 0.4rem; }
  .topbar nav { flex-basis: 100%; order: 3; gap: 0.9rem; }

  .panel { padding: 1rem; }

  .grow { min-width: 0; }

  /* Tabellen als Karten statt als (auf schmalen Bildschirmen unlesbare)
     nebeneinander laufende Spalten darstellen. */
  .link-table thead { display: none; }
  .link-table, .link-table tbody { display: block; width: 100%; }
  .link-table tr {
    display: block;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.65rem 0.75rem;
    margin-bottom: 0.6rem;
  }
  .link-table td {
    display: block;
    border-bottom: none;
    padding: 0.2rem 0;
  }

  /* Zeilen mit Auswahl-Checkbox (Link-Liste): Checkbox + Titel auf eine
     Zeile, alles andere darunter volle Breite. Tabellen ohne Checkbox
     (z.B. Kategorien) bleiben beim einfachen Karten-Stapel oben. */
  .link-table tr:has(.link-checkbox) {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.3rem 0.6rem;
  }
  .link-table tr:has(.link-checkbox) td { padding: 0; }
  .link-table tr:has(.link-checkbox) td:first-child { flex: 0 0 auto; }
  .link-table tr:has(.link-checkbox) td:nth-child(2) { flex: 1 1 auto; min-width: 0; }
  .link-table tr:has(.link-checkbox) td:nth-child(3),
  .link-table tr:has(.link-checkbox) td:nth-child(4),
  .link-table tr:has(.link-checkbox) td:nth-child(5) { flex: 1 1 100%; }

  .move-form { flex-wrap: wrap; }
  .move-select { max-width: none; flex: 1; }
}