/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;line-height:1.6;color:#1e2d2f;background:#f9fbfa;min-height:100vh;display:flex;flex-direction:column}
.skip-link{position:absolute;top:-100px;left:1rem;background:#0d5c4d;color:#fff;padding:0.5rem 1rem;border-radius:0 0 6px 6px;z-index:1000;transition:top 0.2s}
.skip-link:focus{top:0}
img,svg{display:block;max-width:100%}
a{color:#0d5c4d;text-decoration:none}
a:hover{text-decoration:underline}
ul{list-style:none}

/* ===== Container ===== */
.container{width:100%;max-width:1100px;margin:0 auto;padding:0 1.5rem}

/* ===== Header ===== */
.site-header{background:#fff;border-bottom:1px solid #e0ece8;position:sticky;top:0;z-index:100;backdrop-filter:blur(8px);background:rgba(255,255,255,0.92)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;padding-top:0.75rem;padding-bottom:0.75rem}
.logo{display:flex;align-items:center;gap:0.5rem;font-size:1.4rem;font-weight:700;color:#1e2d2f;text-decoration:none;letter-spacing:-0.02em}
.logo svg{color:#0d5c4d}
.logo-accent{color:#0d5c4d;font-weight:600}
.site-nav ul{display:flex;gap:1.5rem;flex-wrap:wrap}
.site-nav a{font-size:0.95rem;font-weight:500;color:#3a4f52;padding:0.25rem 0;border-bottom:2px solid transparent;transition:border-color 0.2s,color 0.2s}
.site-nav a:hover{border-bottom-color:#0d5c4d;color:#0d5c4d;text-decoration:none}

/* ===== Hero Calculator ===== */
.hero-calculator{padding:3rem 0 2.5rem;background:linear-gradient(135deg,#f0f7f4 0%,#e8f2ed 100%)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;align-items:center}
.hero-text h1{font-size:2.8rem;line-height:1.15;font-weight:800;letter-spacing:-0.03em;margin-bottom:1rem;color:#0a3d34}
.highlight{color:#0d5c4d;position:relative}
.highlight::after{content:'';position:absolute;bottom:2px;left:0;width:100%;height:8px;background:#b7dfd4;z-index:-1;border-radius:4px}
.hero-subtitle{font-size:1.15rem;color:#3a4f52;max-width:90%;line-height:1.55}

/* Calculator Card */
.calculator-card{background:#fff;border-radius:16px;padding:2rem;box-shadow:0 8px 30px rgba(13,92,77,0.08);border:1px solid #d4e8e0}
.unit-toggle{display:flex;gap:0.5rem;margin-bottom:1.5rem;background:#eaf5f0;border-radius:10px;padding:4px}
.toggle-btn{flex:1;padding:0.6rem 0.5rem;border:none;background:transparent;border-radius:8px;font-size:0.9rem;font-weight:600;cursor:pointer;color:#4a6a62;transition:all 0.2s}
.toggle-btn.active{background:#fff;color:#0d5c4d;box-shadow:0 2px 8px rgba(0,0,0,0.06)}
.toggle-btn:hover:not(.active){color:#0d5c4d}
.input-group{margin-bottom:1.25rem}
.input-group label{display:block;font-weight:600;font-size:0.9rem;margin-bottom:0.4rem;color:#2d4a43}
.input-group input{width:100%;padding:0.75rem 1rem;border:2px solid #d4e8e0;border-radius:10px;font-size:1rem;transition:border-color 0.2s,box-shadow 0.2s;background:#f9fbfa}
.input-group input:focus{outline:none;border-color:#0d5c4d;box-shadow:0 0 0 3px rgba(13,92,77,0.1)}
.hidden{display:none}
.btn-primary{width:100%;padding:0.85rem;background:#0d5c4d;color:#fff;border:none;border-radius:10px;font-size:1.05rem;font-weight:700;cursor:pointer;transition:background 0.2s,transform 0.1s;letter-spacing:0.01em}
.btn-primary:hover{background:#0a4a3e}
.btn-primary:active{transform:scale(0.98)}
.result-area{margin-top:1.5rem;min-height:60px}
.result-area .bmi-value{font-size:2.5rem;font-weight:800;color:#0a3d34;line-height:1.2}
.result-area .bmi-category{font-size:1.2rem;font-weight:600;margin-top:0.25rem}
.result-area .bmi-range{font-size:0.9rem;color:#5f7a72;margin-top:0.25rem}
.result-area .bmi-note{font-size:0.85rem;color:#6b7f78;margin-top:0.5rem;font-style:italic}
.category-underweight{color:#c98a1a}
.category-normal{color:#0d5c4d}
.category-overweight{color:#c96a1a}
.category-obese{color:#b03030}

/* ===== Info Section (Understanding BMI) ===== */
.info-section{padding:3.5rem 0;background:#fff}
.info-section h2,.benefits-section h2,.disclaimer-section h2{font-size:2rem;font-weight:700;color:#0a3d34;margin-bottom:0.75rem;letter-spacing:-0.02em}
.section-intro{font-size:1.1rem;color:#3a4f52;max-width:700px;margin-bottom:2rem;line-height:1.6}
.category-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem}
.category-card{background:#f6faf8;border-radius:14px;padding:1.5rem;border:1px solid #e0ece8;transition:box-shadow 0.2s}
.category-card:hover{box-shadow:0 6px 20px rgba(13,92,77,0.06)}
.category-icon{margin-bottom:0.75rem;color:#0d5c4d}
.category-card h3{font-size:1.15rem;font-weight:700;margin-bottom:0.4rem;color:#1e2d2f}
.category-card p{margin-bottom:0.5rem;font-size:0.95rem;color:#3a4f52}
.category-card p strong{color:#0a3d34}

/* ===== Benefits Section ===== */
.benefits-section{padding:3.5rem 0;background:#f0f7f4}
.benefits-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;margin-top:2rem}
.benefit-item{display:flex;gap:1rem;align-items:flex-start;background:#fff;padding:1.5rem;border-radius:12px;border:1px solid #d4e8e0}
.benefit-item svg{flex-shrink:0;color:#0d5c4d;margin-top:2px}
.benefit-item h3{font-size:1.05rem;font-weight:700;color:#1e2d2f;margin-bottom:0.25rem}
.benefit-item p{font-size:0.9rem;color:#4a6a62}

/* ===== Disclaimer Section ===== */
.disclaimer-section{padding:3.5rem 0;background:#fff}
.disclaimer-content{max-width:750px;background:#fdfaf5;border-left:4px solid #e0c97f;padding:1.5rem 1.8rem;border-radius:0 12px 12px 0}
.disclaimer-content p{color:#4a4030;margin-bottom:0.75rem;font-size:0.95rem;line-height:1.6}
.disclaimer-content p:last-child{margin-bottom:0}

/* ===== Footer ===== */
.site-footer{background:#1e2d2f;color:#cbdad5;padding:2.5rem 0 1.5rem;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-bottom:2rem}
.footer-brand p{font-size:0.9rem;color:#a0b5ad;margin-top:0.5rem;max-width:300px}
.footer-logo{font-size:1.3rem;font-weight:700;color:#fff}
.footer-links h4{color:#fff;font-size:0.95rem;margin-bottom:0.6rem;font-weight:600}
.footer-links ul{display:flex;flex-direction:column;gap:0.35rem}
.footer-links a{color:#a0b5ad;font-size:0.9rem;transition:color 0.2s}
.footer-links a:hover{color:#fff;text-decoration:none}
.footer-bottom{border-top:1px solid #2d4044;padding-top:1.25rem;text-align:center;font-size:0.8rem;color:#7d948b}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .hero-grid{grid-template-columns:1fr;gap:2rem}
    .hero-text h1{font-size:2.2rem}
    .hero-subtitle{max-width:100%}
    .calculator-card{padding:1.5rem}
    .site-nav ul{gap:1rem}
    .footer-grid{grid-template-columns:1fr;gap:1.5rem}
    .category-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 500px) {
    .hero-text h1{font-size:1.8rem}
    .category-grid{grid-template-columns:1fr}
    .benefits-grid{grid-template-columns:1fr}
    .site-header .container{flex-direction:column;gap:0.5rem;align-items:flex-start}
    .site-nav ul{flex-wrap:wrap;gap:0.75rem}
}

/* ===== About / Legal Pages ===== */
.page-content{padding:3rem 0;min-height:50vh}
.page-content h1{font-size:2.2rem;font-weight:700;color:#0a3d34;margin-bottom:1.5rem}
.page-content p,.page-content li{color:#3a4f52;line-height:1.7;margin-bottom:1rem}
.page-content a{text-decoration:underline}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}