:root {
  --max: 840px;

  --bg: #0f1115;
  --card: #161a22;
  --border: #2a2f3a;
  --text: #e6e8ee;
  --muted: #a0a6b8;
  --accent: #6aa9ff;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  max-width: var(--max);
  margin: 2rem auto;
  padding: 0 1rem;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
}

header h1 { margin: 0 0 0.25rem 0; }
.sub { margin: 0 0 0.75rem 0; color: var(--muted); }

.nav { display: flex; gap: 1rem; margin: 0.25rem 0 1.5rem 0; }
.nav a { color: var(--accent); text-decoration: none; }
.nav a:hover { text-decoration: underline; }

.ev-positive { color: #4ade80; } /* green */

.info-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
}
.info-link:hover {
  text-decoration: underline;
}

#heroMeta {
  margin-top: 0.5rem;
  font-size: 0.82rem;
  opacity: 0.55;
}

#heroMeta::before {
  content: "↻ ";
  opacity: 0.6;
}

#heroEV {
  font-size: 1.7rem;
  font-weight: 800;
}

textarea {
  padding: 0.6rem 0.7rem;
  border: 1px solid #333;
  border-radius: 8px;
  font-size: 1rem;
  background: transparent;
  color: inherit;
  resize: vertical;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem;
  margin: 0 0 1rem 0;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

label { display: grid; gap: 0.35rem; font-size: 0.95rem; }

input, select {
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  background: #0c0f14;
  color: var(--text);
}

input::placeholder { color: #6f7587; }

input:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

.row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1rem;
  flex-wrap: wrap;
}

button {
  padding: 0.65rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  font-size: 1rem;
}
button:hover { background: rgba(106, 169, 255, 0.1); }

.results { display: grid; gap: 0.9rem; }
.label { font-size: 0.85rem; color: var(--muted); }
.value { font-size: 1.5rem; font-weight: 700; }
.small { font-size: 0.95rem; color: var(--muted); }
.muted { color: var(--muted); }

footer { margin-top: 1.5rem; font-size: 0.85rem; color: var(--muted); }

@media (min-width: 720px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .results { grid-template-columns: 1fr 1fr; }
  .results > div:last-child { grid-column: 1 / -1; }
}

/* Remove number input spinners */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] { -moz-appearance: textfield; }