:root {
  color-scheme: light dark;
  --bg: #fff;
  --fg: #222;
  --accent: #2563eb;
  --error: #b91c1c;
  --border: #d1d5db;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f19;
    --fg: #e5e7eb;
    --border: #374151;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
}
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
}
h1, h2 { margin: 0 0 16px; }
.container > h1 {
  background: linear-gradient(90deg, var(--accent), #9333ea);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.error {
  border: 1px solid var(--error);
  color: var(--error);
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 16px;
}
form.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 16px;
  margin-bottom: 16px;
}
label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; }
label.full { grid-column: 1 / -1; }
input, select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: inherit;
  transition: border-color .2s, box-shadow .2s;
}
input:focus, select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgb(37 99 235 / .15); }
small { opacity: 0.7; }
.actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-start;
  gap: 8px;
  flex-wrap: wrap;
  margin: 16px 0 24px;
}
button {
  padding: 10px 14px;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: transform .1s, filter .2s, box-shadow .2s;
}
button:hover { transform: translateY(-1px); filter: brightness(1.05); box-shadow: 0 6px 14px rgba(37,99,235,.2); }
button:active { transform: translateY(0); filter: brightness(0.95); }
table {
  width: 100%;
  border-collapse: collapse;
  border-radius: 10px;
  overflow: hidden;
}
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
th, td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid var(--border);
}
tbody tr:hover { background: rgba(37,99,235,.06); }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeIn .35s ease both; }

.spinner {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity .2s;
}
.spinner.visible { opacity: 1; pointer-events: auto; }
.spinner::before {
  content: "";
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 4px solid rgba(37,99,235,.3);
  border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Mobile stacked tables */
@media (max-width: 640px) {
  table.stack thead { display: none; }
  table.stack tbody tr {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4px;
    margin-bottom: 10px;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 6px;
  }
  table.stack td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 10px;
    border-bottom: none;
  }
  table.stack td::before {
    content: attr(data-label);
    font-weight: 600;
    opacity: .8;
    margin-right: 10px;
  }
}