:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --text: #1a2d3d;
  --muted: #4b6478;
  --primary: #005fa3;
  --primary-hover: #0b75bf;
  --border: #d9e2ea;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  background: linear-gradient(180deg, #edf3f8 0%, #f8fafc 100%);
  color: var(--text);
}

.app-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.topbar-actions {
  display: flex;
  gap: 10px;
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 12px;
  margin-bottom: 18px;
}

.upload-panel {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 18px;
}

.upload-row {
  display: grid;
  grid-template-columns: 2fr 2fr auto;
  gap: 10px;
}

.admin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.admin-row {
  display: grid;
  grid-template-columns: 2fr 2fr auto;
  gap: 10px;
  margin-bottom: 10px;
}

.admin-row-4 {
  grid-template-columns: 2fr 2fr 2fr auto;
}

.admin-checks {
  display: flex;
  gap: 14px;
  margin-bottom: 10px;
}

.admin-checks label {
  display: flex;
  align-items: center;
  gap: 6px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

input,
select,
button {
  min-height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 8px 12px;
  font-size: 14px;
}

button {
  cursor: pointer;
  background: white;
}

button.primary {
  border-color: var(--primary);
  color: white;
  background: var(--primary);
}

button.primary:hover {
  background: var(--primary-hover);
}

button.secondary {
  color: var(--muted);
}

table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
}

th,
td {
  text-align: left;
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
}

.hidden {
  display: none;
}

@media (max-width: 720px) {
  .upload-row {
    grid-template-columns: 1fr;
  }

  .admin-row,
  .admin-row-4 {
    grid-template-columns: 1fr;
  }
}