:root{
  --green:#0f7b6c;
  --green-d:#0a5e52;
  --accent:#ff6b4a;
  --ink:#1c2b2a;
  --muted:#5b6b69;
  --bg:#f4f8f7;
  --card:#ffffff;
  --line:#dde7e5;
  --radius:16px;
  --shadow:0 10px 30px rgba(15,123,108,.10);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px}
h1,h2,h3{line-height:1.15;margin:0 0 .5em}
h2{font-size:clamp(1.5rem,3.5vw,2.1rem);text-align:center;margin-bottom:1.2rem}
p{margin:0 0 1rem}
section{padding:clamp(2.5rem,6vw,4.5rem) 1.25rem;max-width:980px;margin:0 auto}
strong{color:var(--green-d)}

/* HERO */
.hero{background:linear-gradient(160deg,#0f7b6c 0%,#0a5e52 100%);color:#fff}
.hero-inner{max-width:1080px;margin:0 auto;padding:clamp(2.5rem,6vw,4.5rem) 1.25rem;
  display:grid;grid-template-columns:1.2fr .8fr;gap:2.5rem;align-items:center}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.8rem;font-weight:700;opacity:.85;margin-bottom:.6rem}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:800}
.lead{font-size:clamp(1.05rem,2vw,1.25rem);opacity:.95;max-width:34ch}
.hero strong{color:#fff;text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:3px;text-underline-offset:3px}
.hero-cta{display:flex;gap:.8rem;flex-wrap:wrap;margin:1.6rem 0 1rem}
.bloodnote{display:inline-block;background:rgba(255,255,255,.14);padding:.5rem .9rem;border-radius:999px;font-size:.95rem;margin:0}
.bloodnote strong{color:#fff;text-decoration:none}
.hero-photo{position:relative;aspect-ratio:4/5;border-radius:var(--radius);overflow:hidden;
  background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.25)}
.hero-photo img{width:100%;height:100%;object-fit:cover}
.noimg-text{display:none;text-align:center;opacity:.8;font-size:1.1rem}
.hero-photo.noimg .noimg-text{display:block}

/* BOTONES */
.btn{display:inline-block;padding:.85rem 1.5rem;border-radius:999px;font-weight:700;
  text-decoration:none;cursor:pointer;border:none;font-size:1rem;transition:transform .08s,box-shadow .2s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,107,74,.35)}
.btn-primary:hover{box-shadow:0 10px 26px rgba(255,107,74,.45)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6)}
.btn-block{width:100%;font-size:1.1rem;padding:1rem}

/* HISTORIA */
.story{text-align:center}
.story p{max-width:60ch;margin-left:auto;margin-right:auto}

/* CARDS */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.1rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem;box-shadow:var(--shadow)}
.card h3{color:var(--green-d);font-size:1.15rem}
.card p{margin:0;color:var(--muted);font-size:.97rem}

/* REQUISITOS */
.requisitos{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}
.req-list{max-width:48ch;margin:0 auto 1rem;padding-left:1.2rem}
.req-list li{margin:.4rem 0}
.note{color:var(--muted);text-align:center;max-width:60ch;margin:0 auto;font-size:.97rem}

/* FORM */
.form-section{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}
.form-intro{text-align:center;color:var(--muted);max-width:60ch;margin:0 auto 1.8rem}
.form{max-width:560px;margin:0 auto}
.row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{margin-bottom:1rem}
.field label{display:block;font-weight:600;margin-bottom:.35rem;font-size:.95rem}
.field input,.field select,.field textarea{width:100%;padding:.75rem .9rem;border:1px solid var(--line);
  border-radius:10px;font-size:1rem;font-family:inherit;background:#fbfdfc}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(15,123,108,.15)}
.consent{display:flex;gap:.6rem;align-items:flex-start;font-size:.92rem;color:var(--muted);margin:.5rem 0 1.2rem}
.consent input{margin-top:.25rem}
.privacy{text-align:center;color:var(--muted);font-size:.85rem;margin-top:.8rem}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden}
.field-error{display:block;color:#d33;font-size:.85rem;margin-top:.35rem;font-weight:600}
.has-error input,.has-error select,.has-error textarea{border-color:#d33;box-shadow:0 0 0 3px rgba(221,51,51,.12)}
.consent.has-error{color:#d33}
.consent.has-error .field-error{margin-top:.2rem}

/* SHARE */
.share{text-align:center}
.share-btns{display:flex;gap:.7rem;justify-content:center;flex-wrap:wrap;margin-top:1rem}
.btn-share{color:#fff;font-size:.95rem;padding:.7rem 1.2rem}
.wa{background:#25d366}.fb{background:#1877f2}.tw{background:#111}

/* FOOTER */
footer{background:var(--green-d);color:#cfe7e2;text-align:center;padding:2rem 1.25rem}
footer p{margin:.3rem 0}
footer .small{font-size:.82rem;opacity:.8;max-width:60ch;margin:.5rem auto 0}

/* MODAL GRACIAS */
.gracias-overlay{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;
  padding:1.25rem;background:rgba(10,94,82,.45);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  animation:fadeIn .35s ease}
.gracias-overlay[hidden]{display:none}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.gracias-card{position:relative;background:linear-gradient(160deg,var(--green),var(--green-d));color:#fff;
  border-radius:24px;padding:2.6rem 2rem;max-width:460px;width:100%;text-align:center;
  box-shadow:0 30px 80px rgba(0,0,0,.4);animation:popIn .4s cubic-bezier(.2,.9,.3,1.2)}
@keyframes popIn{from{transform:scale(.85);opacity:0}to{transform:scale(1);opacity:1}}
.gracias-card h2{font-size:clamp(1.6rem,5vw,2.2rem);margin-bottom:1rem}
.gracias-card p{opacity:.95;max-width:34ch;margin:0 auto 1.8rem}
.gracias-cta{display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}
.gracias-close{position:absolute;top:.7rem;right:1rem;background:none;border:none;color:#fff;font-size:1.8rem;line-height:1;cursor:pointer;opacity:.8}
.gracias-close:hover{opacity:1}
.btn-ghost-dark{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6)}
.beat{display:inline-block;animation:beat 1s ease-in-out infinite}
@keyframes beat{0%,100%{transform:scale(1)}15%{transform:scale(1.25)}30%{transform:scale(1)}45%{transform:scale(1.2)}}
.hearts{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.hearts span{position:absolute;top:-40px;font-size:1.6rem;animation:fall linear forwards;will-change:transform,opacity}
@keyframes fall{0%{transform:translateY(-40px) rotate(0);opacity:1}100%{transform:translateY(105vh) rotate(360deg);opacity:.9}}

/* CHAT WIDGET */
.chat-toggle{position:fixed;right:18px;bottom:18px;z-index:50;display:flex;align-items:center;gap:.5rem;
  background:var(--accent);color:#fff;border:none;border-radius:999px;padding:.8rem 1.2rem;font-weight:700;
  font-size:1rem;cursor:pointer;box-shadow:0 10px 26px rgba(255,107,74,.45)}
.chat-toggle-icon{font-size:1.25rem}
.chat-panel{position:fixed;right:18px;bottom:18px;z-index:51;width:min(370px,calc(100vw - 36px));
  height:min(540px,calc(100dvh - 36px));background:#fff;border-radius:18px;box-shadow:0 20px 60px rgba(0,0,0,.25);
  display:flex;flex-direction:column;overflow:hidden;border:1px solid var(--line)}
.chat-panel[hidden]{display:none}
.chat-head{background:var(--green);color:#fff;padding:.9rem 1rem;font-weight:700;display:flex;justify-content:space-between;align-items:center}
.chat-head button{background:none;border:none;color:#fff;font-size:1.5rem;line-height:1;cursor:pointer}
.chat-log{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.6rem;background:var(--bg)}
.bubble{max-width:85%;padding:.6rem .85rem;border-radius:14px;font-size:.95rem;white-space:pre-wrap;line-height:1.45}
.bubble.bot{background:#fff;border:1px solid var(--line);align-self:flex-start;border-bottom-left-radius:4px}
.bubble.user{background:var(--green);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.chat-input{display:flex;gap:.5rem;padding:.7rem;border-top:1px solid var(--line);background:#fff}
.chat-input input{flex:1;border:1px solid var(--line);border-radius:999px;padding:.7rem 1rem;font-size:1rem;font-family:inherit}
.chat-input input:focus{outline:none;border-color:var(--green)}
.chat-input button{background:var(--green);color:#fff;border:none;border-radius:50%;width:44px;height:44px;font-size:1.1rem;cursor:pointer;flex-shrink:0}

/* RESPONSIVE */
@media(max-width:760px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-cta{justify-content:center}
  .lead{margin-left:auto;margin-right:auto}
  .hero-photo{max-width:280px;margin:0 auto}
  .row{grid-template-columns:1fr}
  /* Chat a pantalla casi completa, con bordecito por los 4 lados.
     La altura real la fija el JS con visualViewport (se adapta al teclado). */
  .chat-panel{left:10px;right:10px;bottom:10px;top:auto;width:auto;
    height:min(560px,calc(100dvh - 20px));border-radius:16px}
}