/* YogiCalc shared stylesheet */
:root{
  --bg:#f7f8fb; --card:#ffffff; --text:#1a1d29; --muted:#666b7a;
  --brand:#2554ff; --brand-dark:#1a3fcc; --accent:#00b894;
  --border:#e6e8ef; --radius:12px; --shadow:0 2px 10px rgba(20,20,40,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
header.site-header{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}
.nav-wrap{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:14px 20px;gap:16px}
.logo{font-weight:800;font-size:1.3rem;color:var(--brand)}
.logo span{color:var(--accent)}
nav.main-nav{display:flex;gap:18px;flex-wrap:wrap}
nav.main-nav a{color:var(--text);font-weight:500;font-size:.95rem}
.header-actions{display:flex;gap:10px;align-items:center}
select#langSwitch{border:1px solid var(--border);border-radius:8px;padding:6px 8px;background:#fff}
.container{max-width:1100px;margin:0 auto;padding:24px 20px 60px}
.hero{padding:40px 20px;text-align:center}
.hero h1{font-size:2.1rem;margin-bottom:10px}
.hero p{color:var(--muted);max-width:640px;margin:0 auto 20px}
.search-box{max-width:520px;margin:0 auto;display:flex;gap:8px}
.search-box input{flex:1;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:1rem}
.search-box button{padding:12px 18px;border:none;border-radius:10px;background:var(--brand);color:#fff;font-weight:600;cursor:pointer}
.category-grid,.calc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin-top:20px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:transform .15s}
.card:hover{transform:translateY(-2px)}
.card h3{margin:0 0 6px;font-size:1.05rem}
.card p{margin:0;color:var(--muted);font-size:.88rem}
.badge{display:inline-block;background:#eef1ff;color:var(--brand);border-radius:999px;padding:2px 10px;font-size:.72rem;font-weight:600;margin-bottom:8px}
.badge.planned{background:#fff3e0;color:#b8620a}
.calc-page{display:grid;grid-template-columns:1.1fr .9fr;gap:28px}
@media (max-width:820px){.calc-page{grid-template-columns:1fr}}
.calc-form{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;font-size:.88rem;margin-bottom:6px}
.field input,.field select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:.95rem}
.btn{background:var(--brand);color:#fff;border:none;border-radius:8px;padding:11px 18px;font-weight:600;cursor:pointer;font-size:.95rem}
.btn:hover{background:var(--brand-dark)}
.btn-outline{background:#fff;border:1px solid var(--border);color:var(--text)}
.result-box{margin-top:16px;padding:16px;background:#f1f6ff;border:1px solid #d8e4ff;border-radius:10px;display:none}
.result-box.show{display:block}
.result-box .big-result{font-size:1.6rem;font-weight:800;color:var(--brand-dark)}
.steps{margin-top:10px;font-size:.9rem;color:#333}
.steps ol{padding-left:18px;margin:6px 0}
.explain-article{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.explain-article h2{font-size:1.15rem;margin-top:0}
.actions-row{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.icon-btn{border:1px solid var(--border);background:#fff;border-radius:8px;padding:8px 12px;cursor:pointer;font-size:.85rem}
.icon-btn.active{background:#fff4e0;border-color:#f2c14e}
footer.site-footer{border-top:1px solid var(--border);margin-top:40px;padding:26px 20px;color:var(--muted);font-size:.85rem;text-align:center}
.breadcrumbs{font-size:.82rem;color:var(--muted);margin-bottom:14px}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#222;color:#fff;padding:10px 18px;border-radius:8px;font-size:.85rem;opacity:0;pointer-events:none;transition:opacity .2s}
.toast.show{opacity:1}
.ad-slot{background:repeating-linear-gradient(45deg,#f0f1f5,#f0f1f5 10px,#e9eaf0 10px,#e9eaf0 20px);border:1px dashed var(--border);border-radius:10px;text-align:center;color:var(--muted);font-size:.8rem;padding:14px;margin:18px 0}
.chain-step{border-left:3px solid var(--brand);padding-left:16px;margin-bottom:20px}
.region-note{font-size:.8rem;color:var(--muted);margin-top:6px}