:root {
  --bg: #f5f5f0;
  --card: #ffffff;
  --text: #1a1a14;
  --muted: #6b7260;
  --accent: #3d6b2e;
  --accent-light: #eef4eb;
  --accent-2: #c8793a;
  --border: #ddddd4;
  --success: #2d6a4f;
  --warning: #b45309;
  --radius: 16px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: 'DM Sans', sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
header { background: var(--card); border-bottom: 1px solid var(--border); padding: 0 24px; }
.header-inner { max-width: 1100px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, var(--accent), #5a9e48); display: grid; place-items: center; font-family: 'Lora', serif; font-weight: 700; color: #fff; font-size: 14px; }
.brand-name { font-family: 'Lora', serif; font-weight: 700; font-size: 20px; color: var(--text); }
.brand-name span { color: var(--accent); }
nav a { font-size: 14px; font-weight: 500; color: var(--muted); margin-left: 20px; }
nav a:hover { color: var(--accent); text-decoration: none; }

/* Breadcrumb */
.breadcrumb { max-width: 1100px; margin: 0 auto; padding: 14px 24px 0; font-size: 13px; color: var(--muted); }
.breadcrumb a { color: var(--muted); }
.breadcrumb span { margin: 0 6px; }

/* Page hero */
.page-hero { background: linear-gradient(160deg, #2a4d1e 0%, #3d6b2e 60%, #5a7a3a 100%); color: #fff; padding: 40px 24px 48px; }
.page-hero-inner { max-width: 1100px; margin: 0 auto; }
.page-hero h1 { font-family: 'Lora', serif; font-size: clamp(24px, 4vw, 38px); font-weight: 700; line-height: 1.2; margin-bottom: 10px; }
.page-hero p { font-size: 16px; color: rgba(255,255,255,0.82); max-width: 580px; line-height: 1.6; }

/* Main layout */
.main-container { max-width: 1100px; margin: 0 auto; padding: 32px 24px 64px; display: grid; grid-template-columns: 1fr 300px; gap: 28px; }
@media (max-width: 800px) { .main-container { grid-template-columns: 1fr; } }

/* Calculator card */
.calc-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.calc-card h2 { font-family: 'Lora', serif; font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.calc-card > p { color: var(--muted); font-size: 14px; margin-bottom: 20px; line-height: 1.5; }

/* Form elements */
.form-row { display: grid; gap: 16px; margin-bottom: 16px; }
.form-row.cols-2 { grid-template-columns: 1fr 1fr; }
.form-row.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 600px) { .form-row.cols-2, .form-row.cols-3 { grid-template-columns: 1fr; } }

label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
input[type="number"], select, textarea {
  width: 100%; border: 1.5px solid var(--border); background: #fafafa;
  border-radius: 10px; padding: 10px 12px; color: var(--text);
  font-family: 'DM Sans', sans-serif; font-size: 15px;
  outline: none; transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none; appearance: none;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(61,107,46,0.12); background: #fff; }
.input-group { display: flex; align-items: center; gap: 8px; }
.input-group input { flex: 1; }
.input-suffix { font-size: 13px; color: var(--muted); white-space: nowrap; }

.divider { height: 1px; background: var(--border); margin: 20px 0; }

/* Buttons */
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; border: none; background: var(--accent);
  color: #fff; padding: 11px 20px; border-radius: 10px;
  cursor: pointer; font-family: 'DM Sans', sans-serif; font-weight: 600; font-size: 14px;
  transition: background 0.15s, transform 0.1s;
  -webkit-appearance: none; touch-action: manipulation; min-height: 44px;
}
.btn:hover { background: #2d5222; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn.ghost:hover { background: var(--bg); }

/* Result box */
.result-box {
  background: var(--accent-light);
  border: 1.5px solid #b8d9a8;
  color: var(--success);
  padding: 14px 16px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  margin-top: 16px;
  min-height: 52px;
  display: flex;
  align-items: center;
}
.result-box.placeholder { color: var(--muted); font-weight: 400; background: #fafafa; border-color: var(--border); }

/* Tips / info boxes */
.tip-box { background: #fffbf0; border: 1.5px solid #f0d98a; border-radius: 10px; padding: 14px 16px; margin-top: 16px; font-size: 13px; color: #6b4e00; }
.info-box { background: #f0f7ff; border: 1.5px solid #bcd4f5; border-radius: 10px; padding: 14px 16px; margin-top: 16px; font-size: 13px; color: #1e3a6e; }
.tip-box strong, .info-box strong { display: block; margin-bottom: 6px; font-size: 13px; }
.tip-box ul, .info-box ul { padding-left: 16px; }
.tip-box li, .info-box li { margin-bottom: 4px; }

/* Disclaimer */
.disclaimer { font-size: 12px; color: #888; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); line-height: 1.5; }

/* Sidebar */
.sidebar {}
.sidebar-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin-bottom: 20px; }
.sidebar-card h3 { font-family: 'Lora', serif; font-size: 16px; font-weight: 700; margin-bottom: 14px; }
.sidebar-card ul { list-style: none; }
.sidebar-card ul li { margin-bottom: 8px; }
.sidebar-card ul li a { font-size: 14px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.sidebar-card ul li a:hover { color: var(--accent); text-decoration: none; }
.sidebar-card ul li a .icon { font-size: 16px; }

/* Content article */
.content-article { margin-top: 28px; }
.content-article h2 { font-family: 'Lora', serif; font-size: 20px; font-weight: 700; margin-bottom: 10px; margin-top: 28px; }
.content-article h2:first-child { margin-top: 0; }
.content-article p { color: var(--muted); font-size: 14px; line-height: 1.7; margin-bottom: 12px; }
.content-article ul { padding-left: 20px; color: var(--muted); font-size: 14px; margin-bottom: 12px; }
.content-article li { margin-bottom: 6px; line-height: 1.6; }

/* Footer */
footer { background: #1a1a14; color: rgba(255,255,255,0.55); padding: 40px 24px; font-size: 13px; text-align: center; }
footer a { color: rgba(255,255,255,0.7); }
.footer-links { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }

/* Checkbox */
.checkbox-label { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 14px; font-weight: 500; }
.checkbox-label input[type="checkbox"] { width: 16px; height: 16px; border-radius: 4px; cursor: pointer; }

/* Companion grid */
.companion-grid { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.companion-item { padding: 6px 12px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.companion-good { background: #dcfce7; color: #15803d; }
.companion-bad { background: #fee2e2; color: #991b1b; }