:root {
  --bg: #f5f0e9;
  --ink: #1b2430;
  --muted: #536274;
  --panel: rgba(255, 255, 255, 0.9);
  --line: rgba(17, 36, 58, 0.15);
  --pos: #0f8f5f;
  --neg: #c5532f;
  --neu: #2a6798;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Archivo, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 12%, #f1b37e 0, transparent 28%),
    radial-gradient(circle at 90% 22%, #78b2cf 0, transparent 30%),
    linear-gradient(155deg, #fbf5ea, #d8e7ef);
  min-height: 100vh;
}

.page { max-width: 1140px; margin: 0 auto; padding: 1.1rem 1rem 2.4rem; }

.hero {
  border-radius: 16px;
  padding: 1.1rem;
  background: linear-gradient(120deg, #1a2d48, #2d6c84);
  color: #eef5fb;
}

.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.top-nav {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.top-nav a {
  color: #d8e8f5;
  text-decoration: none;
  border: 1px solid rgba(215, 232, 247, 0.38);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  font-size: 0.78rem;
}

.top-nav a:hover,
.top-nav a[aria-current="page"] {
  color: #163650;
  background: #deecf8;
}

.kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.77rem;
  color: #a8c6dc;
}

h1 { margin: 0.2rem 0; }

.panel {
  margin-top: 0.8rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 0.9rem;
}

.controls h2,
.controls h3 { margin: 0 0 0.45rem; }

.helper h2 {
  margin: 0;
  font-size: 0.98rem;
}

.helper p {
  margin: 0.35rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
}

.move-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }

label {
  display: grid;
  gap: 0.2rem;
  font-size: 0.82rem;
  color: var(--muted);
}

input,
select,
button {
  font: inherit;
}

input,
select {
  border: 1px solid #c9d4de;
  border-radius: 9px;
  padding: 0.44rem 0.52rem;
  background: white;
}

button {
  margin-top: 0.55rem;
  border: 0;
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  background: linear-gradient(90deg, #1d6cb2, #178b61);
  color: white;
  font-weight: 700;
  cursor: pointer;
}

.status-message {
  margin: 0.55rem 0 0;
  min-height: 1.1rem;
  font-size: 0.84rem;
  color: var(--muted);
}

.status-message.error {
  color: var(--neg);
}

.delta-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}

.delta-card {
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 0.7rem;
  background: rgba(255, 255, 255, 0.8);
}

.delta-outcome {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  color: var(--muted);
}

.delta-value {
  margin-top: 0.28rem;
  font-size: 1.55rem;
  font-weight: 800;
}

.delta-value.positive { color: var(--pos); }
.delta-value.negative { color: var(--neg); }
.delta-value.neutral { color: var(--neu); }

.delta-range {
  margin-top: 0.25rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.grid {
  margin-top: 0.8rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.estimate-list {
  display: grid;
  gap: 0.44rem;
}

.estimate-row {
  display: grid;
  grid-template-columns: minmax(0, 150px) 96px minmax(0, 1fr);
  gap: 0.48rem;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.3rem;
}

.estimate-outcome,
.estimate-mis,
.estimate-int {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  min-width: 0;
}

.estimate-outcome {
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}

@media (max-width: 980px) {
  .control-grid,
  .move-grid,
  .delta-grid,
  .grid {
    grid-template-columns: 1fr;
  }

  .estimate-row {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}