*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: system-ui, sans-serif;
  background: #0d0d0d;
  color: #d4d4d4;
  margin: 0;
  padding: 1rem;
}

main {
  max-width: 860px;
  margin: 0 auto;
}

h1 { color: #e8c97a; margin-bottom: 0.25rem; }
.subtitle { color: #888; margin-top: 0; margin-bottom: 1rem; font-size: 0.9rem; }

textarea {
  width: 100%;
  background: #1a1a1a;
  color: #d4d4d4;
  border: 1px solid #333;
  border-radius: 4px;
  padding: 0.6rem;
  font-family: monospace;
  font-size: 0.9rem;
  resize: vertical;
  display: block;
}

button {
  margin-top: 0.6rem;
  padding: 0.5rem 1.4rem;
  background: #e8c97a;
  color: #0d0d0d;
  border: none;
  border-radius: 4px;
  font-weight: bold;
  cursor: pointer;
  font-size: 0.95rem;
}
button:hover { background: #f0d88a; }

.error-banner {
  color: #f87171;
  margin-top: 0.75rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
  font-size: 0.9rem;
}

th {
  text-align: left;
  border-bottom: 1px solid #333;
  padding: 0.4rem 0.6rem;
  color: #888;
  font-weight: normal;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid #1f1f1f;
}

tr:last-child td { border-bottom: none; }

.num { text-align: right; font-variant-numeric: tabular-nums; }

.row-error td { color: #888; }
.error-msg { color: #f87171; font-size: 0.82rem; }

.grand-total {
  text-align: right;
  margin-top: 1rem;
  font-size: 1.05rem;
  color: #aaa;
}
.grand-total strong { color: #e8c97a; font-size: 1.2rem; }