:root {
  --bg: #f3eee4;
  --paper: #fffdf8;
  --ink: #1e1914;
  --muted: #5d554b;
  --line: #d8cfc0;
  --accent: #c24b1e;
  --accent-hover: #a63e18;
  --ok: #2c5a38;
  --ok-bg: #e7f0e8;
  --warn-bg: #f8ead2;
  --warn-ink: #5a3d12;
  --shadow: 0 1px 2px rgba(30, 25, 20, 0.06), 0 10px 28px rgba(30, 25, 20, 0.06);
  --radius: 14px;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}

a { color: var(--accent); }

.wrap {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header, .site-footer {
  padding: 18px 0;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.site-header nav a:hover { color: var(--ink); }

.hub-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
}

.hub-nav a {
  min-height: 44px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  background: #fff;
}

.hub-nav a[aria-current="page"] {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

h1 {
  font-family: Georgia, "Iowan Old Style", Palatino, serif;
  font-size: clamp(1.8rem, 5vw, 2.35rem);
  line-height: 1.2;
  margin: 8px 0 12px;
  letter-spacing: -0.03em;
}

.lede { color: var(--muted); margin: 0 0 24px; }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-grid + .form-grid {
  margin-top: 14px;
}

.field { display: flex; flex-direction: column; gap: 6px; }
.field-span { grid-column: 1 / -1; }

label {
  font-size: 0.92rem;
  font-weight: 650;
}

.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

input[type="number"], select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  background: #fff;
  color: var(--ink);
}

input:focus, select:focus {
  outline: 3px solid rgba(194, 75, 30, 0.25);
  border-color: var(--accent);
}

.hint { color: var(--muted); font-size: 0.85rem; }

.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip, .btn, .btn-quiet {
  min-height: 44px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font: inherit;
  padding: 8px 14px;
  cursor: pointer;
}

.chip:hover { border-color: var(--ink); }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.btn {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 700;
  padding: 12px 22px;
  flex: 1 1 180px;
}

.btn:hover { background: var(--accent-hover); }

.btn-quiet { background: transparent; }

.result { display: none; }
.result.is-on { display: block; }

.result-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 14px;
}

.stat {
  background: var(--ok-bg);
  border-radius: 12px;
  padding: 14px 16px;
}

.stat .num {
  display: block;
  font-size: 1.8rem;
  font-weight: 750;
  line-height: 1.1;
  color: var(--ok);
}

.stat .lbl { color: var(--muted); font-size: 0.9rem; }

.bags {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.bag {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
}

.bag strong { display: block; font-size: 1.35rem; }

.note {
  background: var(--warn-bg);
  color: var(--warn-ink);
  border-radius: 10px;
  padding: 12px 14px;
  margin-top: 12px;
}

.error {
  color: #8a2214;
  margin: 10px 0 0;
}

.tools { display: grid; gap: 12px; }

.tool-link {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  text-decoration: none;
  color: inherit;
  min-height: 44px;
}

.tool-link:hover { border-color: var(--accent); }

.tool-link h2 { margin: 0 0 6px; font-size: 1.2rem; }
.tool-link p { margin: 0; color: var(--muted); }

h2 {
  font-family: Georgia, Palatino, serif;
  font-size: 1.4rem;
  margin: 32px 0 10px;
}

.faq h3 { font-size: 1.05rem; margin: 18px 0 6px; }
.faq p { margin: 0 0 8px; color: var(--muted); }

.site-footer {
  color: var(--muted);
  font-size: 0.92rem;
  border-top: 1px solid var(--line);
  margin-top: 40px;
}

@media (max-width: 640px) {
  .form-grid, .result-hero, .bags { grid-template-columns: 1fr; }
  .site-header { align-items: flex-start; }
}