:root {
  color-scheme: light dark;
  --bg: #0f1218;
  --surface: #171b24;
  --border: #2a3140;
  --text: #e8eaef;
  --muted: #8b93a7;
  --accent: #5b8cff;
  --danger: #f07178;
  --radius: 10px;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

#app {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem;
}

.hidden {
  display: none !important;
}

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

h1 {
  font-size: 1.35rem;
  margin: 0 0 0.35rem;
}

h2 {
  font-size: 1.05rem;
  margin: 0 0 1rem;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}

code {
  font-size: 0.85em;
  background: var(--bg);
  padding: 0.15em 0.4em;
  border-radius: 6px;
  border: 1px solid var(--border);
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

input {
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

button {
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

button.secondary {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}

button.danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}

#form-login {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1rem;
}

.error {
  color: var(--danger);
  font-size: 0.9rem;
  margin: 0;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.grid-form {
  display: grid;
  grid-template-columns: 1fr 1fr 120px;
  gap: 0.75rem 1rem;
  align-items: end;
}

@media (max-width: 640px) {
  .grid-form {
    grid-template-columns: 1fr;
  }
}

.form-actions {
  display: flex;
  align-items: flex-end;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  padding: 0.55rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

tbody tr {
  cursor: grab;
}

tbody tr:active {
  cursor: grabbing;
}

tbody tr.blue-background-class {
  background: rgba(91, 140, 255, 0.2);
  opacity: 0.75;
}

tbody tr.sortable-chosen {
  background: rgba(91, 140, 255, 0.12);
}

.cell-title {
  white-space: nowrap;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
}

dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  padding: 1.25rem 1.5rem;
  min-width: min(420px, 92vw);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

dialog form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.dialog-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
}