:root {
  --bg: #0b0f14;
  --card: #121822;
  --text: #e7edf3;
  --muted: #a9b3be;
  --primary: #4f8cff;
  --danger: #ff5d5d;
  --border: #1f2a3a;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: linear-gradient(180deg, #0b0f14, #0b0f14 200px, #0e141b 100%);
  color: var(--text);
}

.site-header {
  padding: 32px 16px 8px;
  text-align: center;
}
.site-header h1 { margin: 0; font-weight: 700; }
.subtitle { color: var(--muted); margin-top: 8px; }

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

h2 { margin: 0 0 12px; font-size: 20px; }
label span { display: block; color: var(--muted); margin-bottom: 6px; font-size: 14px; }

input, select, button {
  font: inherit;
}

input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #0e141b;
  color: var(--text);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.span-2 { grid-column: span 2; }

.actions { margin-top: 12px; display: flex; gap: 8px; flex-wrap: wrap; }

.btn {
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0e141b;
  color: var(--text);
  cursor: pointer;
}
.btn.primary { background: var(--primary); border-color: #2f6fe6; color: white; }
.btn.danger { background: var(--danger); border-color: #e63b3b; color: white; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.results { margin-top: 12px; color: var(--text); }
.hidden { display: none; }

.guidelines { margin: 0; padding-left: 18px; color: var(--text); }
.guidelines li { margin: 6px 0; }

.totals { display: flex; gap: 24px; margin-top: 12px; }

.table-wrap { overflow-x: auto; margin-top: 8px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px; border-bottom: 1px solid var(--border); }
tbody tr:hover { background: rgba(255,255,255,0.03); }

.site-footer { text-align: center; color: var(--muted); padding: 24px 16px; }

@media (min-width: 900px) {
  .container {
    grid-template-columns: 1fr 1fr;
  }
  #tracker-section { grid-column: span 2; }
}