:root {
  --bg: #f6f3ee;
  --surface: #fffdf9;
  --line: #ddd6cb;
  --text-main: #3f3a34;
  --text-subtle: #6b655d;
  --accent: #8d7a65;
  --accent-soft: #ebe3d9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-main);
  font-family: "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.5;
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 20px 40px;
}

.page-header h1 {
  margin: 0;
  font-size: 1.9rem;
  font-weight: 600;
}

.page-header p {
  margin-top: 10px;
  color: var(--text-subtle);
  max-width: 760px;
}

.toolbar {
  margin-top: 20px;
  display: flex;
  gap: 10px;
}

button {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text-main);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.95rem;
  cursor: pointer;
}

button:hover:enabled {
  border-color: #c9bfaf;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button.secondary {
  background: transparent;
}

.scenario-list {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(280px, 1fr));
  gap: 16px;
}

.scenario-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
}

.scenario-card.is-best {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(141, 122, 101, 0.2);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.scenario-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.best-badge {
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid #d9ccbc;
  border-radius: 999px;
  padding: 2px 8px;
}

.remove-btn {
  margin-left: auto;
  padding: 4px 10px;
  font-size: 0.85rem;
}

.input-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--text-subtle);
}

input {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text-main);
  border-radius: 8px;
  padding: 7px 9px;
  font-size: 0.95rem;
}

input:focus {
  outline: none;
  border-color: #b7ab98;
}

.result-list {
  margin: 14px 0 0;
  border-top: 1px solid #e6dfd4;
  padding-top: 10px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.result-list div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

dt {
  color: var(--text-subtle);
}

dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

@media (max-width: 900px) {
  .scenario-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .page {
    padding: 24px 14px 30px;
  }

  .input-grid {
    grid-template-columns: 1fr;
  }
}