/* VidaSana — diseño moderno estilo iOS (móvil primero, rápido y ligero) */
:root{
  --ios-green:#34c759; --ios-green-deep:#1f9d4d; --ios-teal:#5ac8fa;
  --ios-blue:#0a84ff; --ios-orange:#ff9f0a; --ios-pink:#ff375f; --ios-purple:#bf5af2;
  --bg:#f2f2f7; --card:#ffffff;
  --ink:#1c1c1e; --muted:#8e8e93;
  --hairline:rgba(60,60,67,.14);
  --radius-lg:26px; --radius:18px;
  --shadow-card:0 12px 32px rgba(0,0,0,.08);
  --shadow-pop:0 10px 24px rgba(52,199,89,.38);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-tap-highlight-color:transparent}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block}
a{color:#1f9d4d;text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* ===== Header estilo iOS: cristal esmerilado ===== */
.site-header{
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(22px) saturate(180%);
  backdrop-filter:blur(22px) saturate(180%);
  border-bottom:1px solid var(--hairline);
  position:sticky;top:0;z-index:50;
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.logo:hover{text-decoration:none}
.logo::before{
  content:"🥗";display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;color:#fff;font-size:1.25rem;
  background:linear-gradient(135deg,var(--ios-green),var(--ios-teal));
  box-shadow:0 6px 14px rgba(52,199,89,.4);
}
.logo span{color:var(--ios-green-deep)}
.main-nav{display:flex;gap:6px;align-items:center}
.main-nav a{padding:9px 14px;border-radius:999px;font-weight:600;font-size:.95rem;color:var(--ink)}
.main-nav a:hover{background:rgba(120,120,128,.12);text-decoration:none}
.main-nav a.cta{
  background:linear-gradient(135deg,var(--ios-green),#2fbf71);color:#fff;
  box-shadow:var(--shadow-pop);font-weight:700;
}
.main-nav a.cta:hover{filter:brightness(1.05)}
.main-nav a.cta:active{transform:scale(.96)}
.nav-toggle{display:none;background:rgba(120,120,128,.12);border:none;border-radius:12px;padding:9px 13px;font-size:1.15rem;cursor:pointer;color:var(--ink)}

/* ===== Hero con fondo degradado tipo wallpaper iOS ===== */
.hero{
  background:
    radial-gradient(1100px 480px at 12% -10%, rgba(90,200,250,.38), transparent 60%),
    radial-gradient(900px 560px at 92% 112%, rgba(255,159,10,.30), transparent 60%),
    radial-gradient(700px 420px at 85% 8%, rgba(191,90,242,.22), transparent 55%),
    linear-gradient(165deg,#0a3527 0%, #14532d 48%, #0d5c43 100%);
  color:#fff;padding:88px 0 76px;text-align:center;position:relative;overflow:hidden;
}
.hero .wrap{position:relative;z-index:1}
.hero .wrap::before{
  content:"✨ 100% gratis · Sin registro";
  display:inline-block;font-size:.82rem;font-weight:700;letter-spacing:.02em;
  background:rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.32);border-radius:999px;
  padding:8px 18px;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(2rem,5.2vw,3.1rem);line-height:1.12;font-weight:800;
  letter-spacing:-.035em;margin-bottom:16px;
  animation:rise .7s cubic-bezier(.2,.7,.2,1) both;
}
.hero p{font-size:1.12rem;opacity:.9;max-width:640px;margin:0 auto 30px;animation:rise .7s .12s cubic-bezier(.2,.7,.2,1) both}
.hero .btn{animation:rise .7s .24s cubic-bezier(.2,.7,.2,1) both}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.btn{
  display:inline-block;border:none;cursor:pointer;
  background:linear-gradient(135deg,var(--ios-green),#2fbf71);color:#fff;
  font-weight:700;padding:16px 36px;border-radius:999px;font-size:1.05rem;font-family:var(--font);
  box-shadow:var(--shadow-pop), inset 0 1px 0 rgba(255,255,255,.35);
  transition:transform .15s ease, filter .15s ease;
}
.btn:hover{filter:brightness(1.06);text-decoration:none;color:#fff}
.btn:active{transform:scale(.96)}
.btn.secondary{
  background:rgba(255,255,255,.16);color:#fff;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.35);box-shadow:none;
}

/* ===== Secciones ===== */
.section{padding:56px 0}
.section h2{font-size:1.85rem;font-weight:800;letter-spacing:-.025em;margin-bottom:10px;text-align:center}
.section .sub{text-align:center;color:var(--muted);max-width:640px;margin:0 auto 32px;font-size:1.02rem}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}

/* ===== Tarjetas estilo app iOS ===== */
.card{
  background:var(--card);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:transform .2s cubic-bezier(.2,.7,.2,1.2), box-shadow .2s;
  border:1px solid rgba(255,255,255,.6);
}
.card:hover{transform:translateY(-5px);box-shadow:0 20px 44px rgba(0,0,0,.12);text-decoration:none}
.card:active{transform:scale(.98)}
.card .emoji-top{
  font-size:2.1rem;width:74px;height:74px;margin:24px 0 4px 24px;flex:none;
  display:flex;align-items:center;justify-content:center;border-radius:22px;color:#fff;
  background:linear-gradient(135deg,var(--ios-green),var(--ios-teal));
  box-shadow:0 10px 22px rgba(52,199,89,.35);
}
.grid .card:nth-child(4n+2) .emoji-top{background:linear-gradient(135deg,var(--ios-orange),var(--ios-pink));box-shadow:0 10px 22px rgba(255,159,10,.35)}
.grid .card:nth-child(4n+3) .emoji-top{background:linear-gradient(135deg,var(--ios-blue),var(--ios-purple));box-shadow:0 10px 22px rgba(10,132,255,.35)}
.grid .card:nth-child(4n+4) .emoji-top{background:linear-gradient(135deg,var(--ios-teal),var(--ios-green));box-shadow:0 10px 22px rgba(90,200,250,.4)}
.card .body{padding:14px 24px 24px;display:flex;flex-direction:column;gap:8px;flex:1}
.card h3{font-size:1.12rem;line-height:1.35;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.card p{color:var(--muted);font-size:.95rem;flex:1}
.card .tag{
  align-self:flex-start;background:rgba(52,199,89,.14);color:var(--ios-green-deep);
  font-size:.74rem;font-weight:700;padding:5px 12px;border-radius:999px;
  text-transform:uppercase;letter-spacing:.06em;
}

/* ===== Imágenes de artículos y tarjetas ===== */
.card-img{width:100%;height:172px;object-fit:cover;display:block;border-radius:var(--radius-lg) var(--radius-lg) 0 0}
.article-hero{width:100%;height:auto;border-radius:var(--radius);margin:8px 0 24px;box-shadow:var(--shadow-card)}

/* ===== Artículo ===== */
.article{max-width:760px;margin:0 auto;background:var(--card);border-radius:var(--radius-lg);padding:38px;box-shadow:var(--shadow-card)}
.article h1{font-size:2rem;line-height:1.22;font-weight:800;letter-spacing:-.03em;margin-bottom:10px}
.article .meta{color:var(--muted);font-size:.9rem;margin-bottom:24px}
.article h2{font-size:1.4rem;margin:30px 0 12px;font-weight:700;letter-spacing:-.02em;color:var(--ios-green-deep)}
.article h3{font-size:1.12rem;margin:22px 0 8px;font-weight:700}
.article p,.article li{margin-bottom:12px}
.article ul,.article ol{padding-left:22px}
.article .intro{font-size:1.1rem;color:#3a3a3c;border-left:4px solid var(--ios-green);padding-left:16px;margin-bottom:24px}
.disclaimer{background:#fffbeb;border:1px solid #fde68a;border-radius:16px;padding:16px 20px;font-size:.9rem;color:#92400e;margin:26px 0}

/* ===== Espacios publicitarios ===== */
.ad-slot{
  border:2px dashed #d1d1d6;background:rgba(255,255,255,.65);border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;color:#aeaeb2;
  font-size:.85rem;font-weight:600;letter-spacing:.04em;margin:30px auto;text-align:center;
}
.ad-leaderboard{max-width:970px;min-height:110px}
.ad-inarticle{max-width:700px;min-height:250px}
.ad-sidebar{min-height:250px}

/* ===== Herramienta Mi Plan: tarjeta de cristal ===== */
.tool-box{
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border:1px solid rgba(255,255,255,.7);border-radius:30px;
  box-shadow:var(--shadow-card);padding:32px;max-width:720px;margin:0 auto;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-weight:700;font-size:.95rem;letter-spacing:-.01em}
.field input,.field select{
  font-family:var(--font);font-size:1.05rem;padding:14px 16px;
  border:none;border-radius:15px;background:#ececf1;color:var(--ink);
  box-shadow:inset 0 1px 3px rgba(0,0,0,.06);
}
.field input:focus,.field select:focus{outline:none;box-shadow:0 0 0 3px rgba(52,199,89,.35)}
/* Segmented control estilo iOS */
.radio-row{display:flex;gap:0;background:#e4e4ea;border-radius:16px;padding:4px;flex-wrap:nowrap}
.radio-pill{
  flex:1;text-align:center;border:none;border-radius:12px;padding:11px 10px;cursor:pointer;
  font-weight:600;font-size:.95rem;color:var(--ink);transition:all .18s;
}
.radio-pill input{display:none}
.radio-pill:has(input:checked){background:#fff;color:var(--ink);box-shadow:0 3px 10px rgba(0,0,0,.12);font-weight:700}
.result{
  display:none;background:rgba(255,255,255,.85);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border-radius:30px;box-shadow:var(--shadow-card);
  padding:32px;max-width:860px;margin:30px auto;
}
.result.show{display:block}
.result h2{color:var(--ios-green-deep);margin-bottom:6px;font-weight:800;letter-spacing:-.02em}
.kpi-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:20px 0}
.kpi{background:linear-gradient(135deg,#1f9d4d,#0d7a5f);border-radius:20px;padding:16px 12px;text-align:center;color:#fff;box-shadow:0 8px 20px rgba(31,157,77,.3)}
.kpi .n{font-size:1.6rem;font-weight:800;letter-spacing:-.02em}
.kpi .l{font-size:.82rem;opacity:.85}
.plan-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:10px}
.plan-card{border:1px solid var(--hairline);border-radius:20px;padding:22px;background:#fff}
.plan-card h3{color:var(--ios-green-deep);margin-bottom:10px;font-weight:700}
.plan-card ul{padding-left:20px}
.plan-card li{margin-bottom:8px;font-size:.96rem}
.day-meal{background:#f2f2f7;border-radius:12px;padding:12px 16px;margin-bottom:8px;font-size:.95rem}
.day-meal strong{color:var(--ios-green-deep)}

/* ===== Footer ===== */
.site-footer{background:#1c1c1e;color:#aeaeb2;margin-top:64px;padding:48px 0 24px}
.site-footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:26px;margin-bottom:26px}
.site-footer h4{color:#fff;margin-bottom:10px;font-size:1rem;font-weight:700}
.site-footer a{color:#aeaeb2;font-size:.93rem;display:block;margin-bottom:8px}
.site-footer a:hover{color:#fff;text-decoration:none}
.site-footer .bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;font-size:.85rem;text-align:center;color:#8e8e93}

/* ===== Responsive ===== */
@media (max-width:720px){
  .nav-toggle{display:block}
  .main-nav{
    display:none;position:absolute;top:66px;left:12px;right:12px;
    background:rgba(255,255,255,.92);
    -webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);
    flex-direction:column;padding:12px;border-radius:22px;gap:2px;
    border:1px solid var(--hairline);box-shadow:0 20px 50px rgba(0,0,0,.18);
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:13px 16px;font-size:1.02rem}
  .hero{padding:70px 0 60px}
  .article{padding:24px;border-radius:22px}
  .form-grid{grid-template-columns:1fr}
  .plan-cols{grid-template-columns:1fr}
  .tool-box{padding:22px;border-radius:24px}
  .result{padding:22px;border-radius:24px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}

/* Relacionados al final de cada artículo */
.related{margin-top:36px}
.related>h2{margin-bottom:18px}