:root {
  color-scheme: light dark;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.5;
  --bg: #f8fafc;
  --fg: #0f172a;
  --muted: #64748b;
  --border: #cbd5f5;
  --card: #ffffffcc;
  --danger: #dc2626;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  display: flex;
  flex-direction: column;
}

.container {
  width: min(960px, 95vw);
  margin: clamp(1rem, 4vw, 2rem) auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

h1 { margin: 0; font-size: clamp(1.6rem, 2vw + 1rem, 2.2rem); }

.card {
  background: var(--card);
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  padding: clamp(1.25rem, 2vw, 1.75rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  backdrop-filter: blur(6px);
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.card__header--split {
  align-items: flex-start;
}

.card__title {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.card--identity {
  padding-block: 0.75rem;
  padding-inline: 1rem;
}

.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

th, td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

tbody tr:hover {
  background: rgba(148, 163, 184, 0.08);
}

tbody tr.table-row--selected {
  background: rgba(59, 130, 246, 0.15);
}

tbody tr.table-row--selected:hover {
  background: rgba(59, 130, 246, 0.2);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.button-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.card__form {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  gap: 1rem;
}

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

.card__form-actions .button-group {
  margin-left: auto;
}

.button {
  appearance: none;
  border: 1px solid rgba(15, 23, 42, 0.2);
  border-radius: 999px;
  padding: 0.45rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  background: #ffffff;
  color: inherit;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.08);
}

.button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.button--ghost {
  background: transparent;
}

.button--danger {
  border-color: var(--danger);
  color: var(--danger);
}

.input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(15, 23, 42, 0.15);
  font-size: 0.95rem;
}

.input--textarea {
  min-height: 120px;
  resize: vertical;
}

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

.grid__full {
  grid-column: 1 / -1;
}

label { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.9rem; }

.muted { color: var(--muted); font-size: 0.85rem; }

.error { color: var(--danger); font-size: 0.85rem; }

.hidden { display: none !important; }

.footer {
  margin-top: auto;
  padding: 1rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
}

code {
  background: rgba(148, 163, 184, 0.15);
  padding: 0.15rem 0.35rem;
  border-radius: 0.35rem;
  font-size: 0.85rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #020617;
    --fg: #e2e8f0;
    --muted: #94a3b8;
    --border: rgba(148, 163, 184, 0.2);
    --card: rgba(15, 23, 42, 0.55);
  }

  .button {
    background: rgba(15, 23, 42, 0.6);
    border-color: rgba(148, 163, 184, 0.3);
    color: inherit;
  }

  tbody tr:hover {
    background: rgba(148, 163, 184, 0.18);
  }
  tbody tr.table-row--selected {
    background: rgba(59, 130, 246, 0.35);
  }

  tbody tr.table-row--selected:hover {
    background: rgba(59, 130, 246, 0.4);
  }

}