:root {
  --navy: #1F4E78;
  --navy-light: #D9E1F2;
  --red-bg: #FFC7CE;
  --red-text: #9C0006;
  --border: #BFBFBF;
}
* { box-sizing: border-box; }
body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  color: #222;
  background: #f7f8fa;
}
.topbar {
  background: var(--navy);
  color: white;
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar .brand { color: white; text-decoration: none; font-size: 1.2em; font-weight: bold; }
.topbar .brand span { font-weight: normal; opacity: 0.85; }
.topbar nav a { color: white; text-decoration: none; margin-left: 20px; }
.topbar nav a:hover { text-decoration: underline; }

main { max-width: 1100px; margin: 0 auto; padding: 20px; }
h1 { color: var(--navy); }
h2 { color: var(--navy); font-size: 1.2em; border-bottom: 2px solid var(--navy-light); padding-bottom: 6px; }
h3 { color: var(--navy); font-size: 1.05em; margin-top: 20px; }
.subtitle { color: #555; }
.hint { color: #555; font-size: 0.9em; }

.card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 18px 20px;
  margin-bottom: 20px;
}

.grid3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 10px;
}
label { display: flex; flex-direction: column; font-size: 0.9em; gap: 4px; }
input[type="text"], input[type="number"], select, textarea {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 1em;
}
textarea { width: 100%; font-family: monospace; }

.toolbar { margin: 10px 0; display: flex; gap: 8px; flex-wrap: wrap; }
button {
  background: var(--navy-light);
  border: 1px solid var(--navy);
  color: var(--navy);
  padding: 7px 14px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9em;
}
button:hover { background: #c3d2e8; }
button.primary {
  background: var(--navy);
  color: white;
  font-size: 1.05em;
  padding: 10px 22px;
  margin-top: 8px;
}
button.primary:hover { background: #163a5c; }

table { border-collapse: collapse; width: 100%; margin-top: 10px; }
th, td { border: 1px solid var(--border); padding: 6px 8px; text-align: center; font-size: 0.88em; }
th { background: var(--navy); color: white; }
tbody tr:nth-child(even) { background: #f2f6fa; }
.table-scroll { overflow-x: auto; }
.uplift-row td:nth-child(4) { background: var(--red-bg); color: var(--red-text); font-weight: bold; }

.cell { width: 100%; min-width: 70px; }

.paste-box { margin-top: 16px; padding-top: 12px; border-top: 1px dashed var(--border); }

.checkboxes { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 6px; margin: 10px 0; }
.checkbox-label { flex-direction: row; align-items: center; gap: 8px; font-size: 0.92em; }
.checkbox-label input { width: auto; }

.flash { padding: 10px 14px; border-radius: 4px; margin-bottom: 14px; }
.flash.error { background: var(--red-bg); color: var(--red-text); border: 1px solid var(--red-text); }
.error-text { color: var(--red-text); font-weight: bold; }

footer {
  text-align: center;
  color: #777;
  font-size: 0.85em;
  padding: 20px;
  margin-top: 40px;
}