/* Baby Formula Tool - Clean Version */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:wght@400;500;600&display=swap');
:root{--a:#7c3aed;--b:#fce7f3;--c:#fffaf5;--d:#fff;--e:#374151;--f:#6b7280;--g:#f3e8ff;--h:0 4px 24px rgba(124,58,237,0.08);--r:20px}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter',sans-serif;background:var(--c);color:var(--e);line-height:1.7}
header{background:linear-gradient(135deg,#fff0f5 0%,var(--b) 100%);border-bottom:1px solid var(--g);padding:16px 0;position:sticky;top:0;z-index:100}
.nav{max-width:1100px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo svg{width:40px;height:40px;flex-shrink:0}
.logo span{font-family:'Playfair Display',serif;font-size:1.5rem;font-weight:600;color:var(--a)}
nav ul{display:flex;gap:8px;list-style:none;align-items:center;margin:0;padding:0}
nav li{display:flex;align-items:center}
nav a{text-decoration:none;color:var(--e);font-weight:500;font-size:0.95rem;transition:color 0.2s;display:inline-block;padding:10px 16px;border-radius:8px;min-height:44px;line-height:24px}
nav a:hover{color:var(--a);background:rgba(124,58,237,0.06)}
.hero{max-width:1100px;margin:0 auto;padding:60px 24px 40px;text-align:center}
.hero h1{font-family:'Playfair Display',serif;font-size:2.8rem;color:var(--a);margin-bottom:16px;line-height:1.2}
.hero p{font-size:1.15rem;color:var(--f);max-width:600px;margin:0 auto 32px}
main{max-width:1100px;margin:0 auto;padding:0 24px 80px}
.card{background:var(--d);border-radius:var(--r);box-shadow:var(--h);padding:40px;margin-bottom:48px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.input{margin-bottom:24px}
.input label{display:block;font-weight:500;margin-bottom:8px;color:var(--e)}
.input input,.input select{width:100%;padding:14px 16px;border:2px solid var(--g);border-radius:12px;font-size:1rem;font-family:inherit;background:#fff}
.input input:focus,.input select:focus{outline:none;border-color:var(--a)}
.btn{background:linear-gradient(135deg,var(--a) 0%,#a78bfa 100%);color:white;border:none;padding:16px 32px;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:transform 0.2s;width:100%}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(124,58,237,0.25)}
.result{background:linear-gradient(135deg,#faf5ff 0%,var(--g) 100%);border-radius:16px;padding:32px;text-align:center}
.result-num{font-family:'Playfair Display',serif;font-size:3rem;color:var(--a);font-weight:600}
.result-label{color:var(--f);font-size:0.95rem;margin-top:4px}
.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.result-item{background:white;border-radius:12px;padding:16px}
.section-title{font-family:'Playfair Display',serif;font-size:2rem;color:var(--a);margin-bottom:32px;text-align:center}
.article-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-bottom:48px}
.article-card{background:var(--d);border-radius:var(--r);box-shadow:var(--h);padding:28px;transition:transform 0.2s}
.article-card:hover{transform:translateY(-4px)}
.article-card h3{font-family:'Playfair Display',serif;font-size:1.25rem;color:var(--a);margin-bottom:12px}
.article-card p{color:var(--f);font-size:0.95rem;margin-bottom:16px}
.article-card a{color:var(--a);text-decoration:none;font-weight:600;font-size:0.9rem}
.ad{background:#f3f4f6;border:2px dashed #d1d5db;border-radius:12px;padding:24px;text-align:center;color:#9ca3af;font-size:0.85rem;margin:24px 0}
footer{background:#fff0f5;border-top:1px solid var(--g);padding:48px 24px 24px;margin-top:60px}
.footer-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:32px}
.footer-brand{font-family:'Playfair Display',serif;font-size:1.25rem;color:var(--a);margin-bottom:12px}
footer p{color:var(--f);font-size:0.9rem;line-height:1.6}
.footer-links h4{font-size:0.9rem;font-weight:600;margin-bottom:16px;color:var(--e)}
.footer-links ul{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--f);text-decoration:none;font-size:0.9rem;transition:color 0.2s}
.footer-links a:hover{color:var(--a)}
.copyright{max-width:1100px;margin:0 auto;text-align:center;padding-top:24px;border-top:1px solid var(--g);color:var(--f);font-size:0.85rem}
.breadcrumb{max-width:1100px;margin:0 auto;padding:16px 24px;font-size:0.85rem;color:var(--f)}
.breadcrumb a{color:var(--a);text-decoration:none}
.content-page{max-width:800px;margin:0 auto;padding:40px 24px;background:var(--d);border-radius:var(--r);box-shadow:var(--h)}
.content-page h1{font-family:'Playfair Display',serif;font-size:2.2rem;color:var(--a);margin-bottom:24px}
.content-page h2{font-family:'Playfair Display',serif;font-size:1.5rem;color:var(--a);margin:32px 0 16px}
.content-page p{margin-bottom:16px;color:var(--e)}
.content-page ul{margin-left:24px;margin-bottom:16px}
.content-page li{margin-bottom:8px}
.faq-item{border-bottom:1px solid var(--g);padding:20px 0}
.faq-item h3{font-size:1.1rem;color:var(--a);margin-bottom:8px}
.notfound{text-align:center;padding:80px 24px}
.notfound svg{width:120px;height:120px;margin-bottom:24px}
.notfound h1{font-family:'Playfair Display',serif;font-size:3rem;color:var(--a);margin-bottom:16px}
.notfound p{color:var(--f);margin-bottom:32px}
.notfound-links{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.notfound-links a{background:var(--d);border:2px solid var(--g);padding:12px 24px;border-radius:12px;text-decoration:none;color:var(--a);font-weight:500;transition:all 0.2s}
.notfound-links a:hover{background:var(--a);color:white;border-color:var(--a)}

@media(max-width:768px){
.hero{padding:40px 16px 24px}
.hero h1{font-size:1.8rem}
.hero p{font-size:1rem}
main{padding:0 16px 40px}
.card{padding:24px}
.grid{grid-template-columns:1fr;gap:24px}
.article-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr;gap:24px}
.footer-grid>div:first-child{grid-column:1/-1}
.content-page{padding:24px 16px}
.content-page h1{font-size:1.6rem}
.result-num{font-size:2rem}
.result-grid{grid-template-columns:1fr}
.logo span{font-size:1.2rem}
nav ul{gap:4px;width:100%;justify-content:center;padding-top:8px;border-top:1px solid var(--g)}
nav a{font-size:0.85rem;padding:8px 12px;min-height:40px}
}
@media(max-width:480px){
.footer-grid{grid-template-columns:1fr}
}

.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
@media(max-width:768px){
.menu-toggle{display:block}
nav{display:none;width:100%}
nav.open{display:block}
nav ul{flex-direction:column;width:100%;padding:8px 0;border-top:1px solid var(--g);gap:0}
nav ul li{width:100%}
nav ul li a{display:block;width:100%;padding:12px 16px;border-radius:0}
}