:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --card: #ffffff;
  --text: #102039;
  --muted: #5f6f86;
  --line: #d9e2ef;
  --primary: #0057b8;
  --primary-dark: #003e82;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}
header { margin-bottom: 20px; }
.eyebrow { color: var(--primary); font-weight: 700; text-transform: uppercase; letter-spacing: .08em; font-size: 12px; }
h1 { margin: 6px 0 8px; font-size: 40px; }
.subtitle { margin: 0 0 12px; color: var(--muted); }
.banner {
  background: #eef5ff;
  border: 1px solid #bdd3f5;
  color: #11407c;
  padding: 12px 14px;
  border-radius: 10px;
  font-weight: 600;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: 0 4px 20px rgba(16,32,57,.05);
}
.controls, .section-header, .actions, .mode-switch, .batch-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
button, input[type="file"]::file-selector-button {
  border: 0;
  border-radius: 10px;
  padding: 11px 16px;
  font-weight: 700;
  cursor: pointer;
  background: var(--primary);
  color: white;
}
button:hover, input[type="file"]::file-selector-button:hover { background: var(--primary-dark); }
.secondary {
  background: #e9eff8;
  color: var(--text);
}
.secondary:hover { background: #dbe5f3; }
.tab { background: #eef3fb; color: var(--text); }
.tab.active { background: var(--primary); color: white; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 12px;
  font: inherit;
  background: white;
}
textarea { resize: vertical; }
.help { color: var(--muted); margin-top: 0; }
.hidden { display: none; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
@media (max-width: 720px) {
  h1 { font-size: 30px; }
  .container { padding: 20px 14px 40px; }
}