:root {
  --bg: #f6f4ef;
  --card: #ffffff;
  --text: #22252a;
  --muted: #5c6470;
  --accent: #2f6f4e;
  --accent-soft: #e6f0e9;
  --border: #ddd6c9;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

.site-header, main, .site-footer {
  max-width: 880px;
  margin: 0 auto;
  padding: 16px;
}

.site-header h1 { font-size: 1.6rem; margin: 16px 0 4px; }
.badge {
  font-size: 0.75rem;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 2px 10px;
  vertical-align: middle;
}
.lead { color: var(--muted); margin: 4px 0 12px; }

.tool-nav { display: flex; flex-wrap: wrap; gap: 8px; }
.tool-nav a {
  background: var(--accent-soft);
  color: var(--accent);
  text-decoration: none;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.9rem;
  font-weight: 600;
}

.tool-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin: 16px 0;
}
.tool-card h2 { margin-top: 0; font-size: 1.25rem; }

.row { display: flex; flex-wrap: wrap; align-items: end; gap: 12px; margin: 12px 0; }
.row label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9rem; font-weight: 600; }
.arrow { font-size: 1.2rem; padding-bottom: 6px; }

input, select, button { font: inherit; }
input[type="number"], input[type="text"], input[type="date"], select {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  background: #fff;
  max-width: 100%;
}
button {
  border: 0;
  border-radius: 8px;
  padding: 9px 18px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
button:hover { opacity: 0.9; }
.row-remove { background: #e8e2d6; color: var(--text); padding: 4px 10px; }

.input-table { width: 100%; border-collapse: collapse; margin: 8px 0; }
.input-table th, .input-table td { padding: 6px 4px; text-align: left; font-size: 0.9rem; }
.input-table input[type="number"] { width: 90px; }
.input-table input[type="text"] { width: 110px; }

.result {
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 12px 16px;
  margin-top: 14px;
}
.result:empty { display: none; }
.result table { width: 100%; border-collapse: collapse; }
.result th, .result td { padding: 4px 6px; text-align: left; border-bottom: 1px solid #cfddd2; font-size: 0.95rem; }
.result .error { color: #a12622; }

.note { margin-top: 14px; font-size: 0.88rem; color: var(--muted); }
.note summary { cursor: pointer; font-weight: 600; color: var(--text); }

.swatches { display: flex; flex-wrap: wrap; gap: 10px; margin: 10px 0; }
.swatch {
  flex: 1 1 120px;
  border-radius: 8px;
  padding: 28px 10px 10px;
  font-size: 0.85rem;
  border: 1px solid var(--border);
}
.swatch .hex { font-family: ui-monospace, monospace; font-weight: 700; display: block; }
.font-sample { font-size: 1.15rem; margin: 6px 0; }

.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.site-footer a { color: var(--accent); font-size: 0.9rem; }
.site-footer p { color: var(--muted); font-size: 0.85rem; }

@media (max-width: 640px) {
  .site-header, main, .site-footer { padding: 12px; }
  .tool-card { padding: 14px; }
  .input-table, .input-table tbody, .input-table tr, .input-table td { display: block; width: 100%; }
  .input-table thead { display: none; }
  .input-table tr { border: 1px solid var(--border); border-radius: 8px; padding: 8px; margin-bottom: 8px; }
  .input-table input[type="text"], .input-table input[type="number"] { width: 100%; }
  .row { flex-direction: column; align-items: stretch; }
  .arrow { display: none; }
  button { width: 100%; }
  .row-remove, #ingredient-add { width: auto; }
}