/* =========================================================
   Clínica Avanzada de Control del Dolor — Dr. Sergio Castillo
   Diseño: motivo hexagonal de marca · azul petróleo #004878
   ========================================================= */

:root{
  --navy:#004878;        /* azul de marca (logo) */
  --navy-deep:#013a5e;   /* variante profunda */
  --navy-ink:#0a2436;    /* texto oscuro */
  --aqua:#1f9bb8;        /* acento frío (alivio) */
  --aqua-soft:#e3f2f6;
  --bg:#f3f7fa;          /* fondo clínico frío */
  --bg-alt:#eaf1f7;
  --card:#ffffff;
  --line:#dbe6ee;
  --slate:#42586a;       /* texto secundario */
  --wa:#25d366;          /* WhatsApp */
  --shadow:0 18px 44px -24px rgba(1,58,94,.45);
  --shadow-sm:0 8px 22px -14px rgba(1,58,94,.4);
  --radius:16px;
  --maxw:1160px;
  --hex:polygon(25% 3%,75% 3%,100% 50%,75% 97%,25% 97%,0% 50%);
  --font-display:'Space Grotesk',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  font-family:var(--font-body);
  color:var(--navy-ink);
  background:var(--bg);
  line-height:1.7;
  font-size:1rem;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.12;font-weight:600;letter-spacing:-.02em}

.wrap{width:min(100% - 2.4rem,var(--maxw));margin-inline:auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--font-display);font-weight:600;font-size:.78rem;
  letter-spacing:.16em;text-transform:uppercase;color:var(--navy);
}
.eyebrow::before{
  content:"";width:14px;height:16px;background:var(--aqua);
  clip-path:var(--hex);flex:none;
}
.section{padding:clamp(3.4rem,7vw,6rem) 0}
.section-head{max-width:640px;margin-bottom:2.6rem}
.section-head h2{
  font-size:clamp(1.7rem,3.6vw,2.6rem);margin:.7rem 0 .6rem;color:var(--navy-ink);
}
.section-head p{color:var(--slate);font-size:1.05rem}
.center{text-align:center;margin-inline:auto}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;justify-content:center;
  font-family:var(--font-display);font-weight:600;font-size:.98rem;
  padding:.85rem 1.5rem;border-radius:999px;border:1.5px solid transparent;
  cursor:pointer;transition:transform .18s ease,box-shadow .2s ease,background .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--navy);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--navy-deep);transform:translateY(-2px)}
.btn-wa{background:var(--wa);color:#04351a}
.btn-wa:hover{transform:translateY(-2px);box-shadow:0 12px 24px -12px rgba(37,211,102,.7)}
.btn-ghost{background:transparent;color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--navy);background:#fff}
.btn svg{width:19px;height:19px;flex:none}

/* ---------- Header ---------- */
.header{
  position:sticky;top:0;z-index:60;
  background:rgba(243,247,250,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s,padding .3s;
}
.header.scrolled{border-color:var(--line);box-shadow:0 6px 20px -18px rgba(1,58,94,.6)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 0}
.brand{display:flex;align-items:center;gap:.6rem}
.brand img{height:42px;width:auto}
.nav-links{display:flex;align-items:center;gap:.3rem;list-style:none}
.nav-links a{
  font-family:var(--font-display);font-weight:500;font-size:.94rem;color:var(--navy-ink);
  padding:.5rem .8rem;border-radius:999px;transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--navy);background:#fff}
.nav-cta{display:flex;align-items:center;gap:.6rem}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:.4rem}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--navy-ink);margin:5px 0;transition:.3s;border-radius:2px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:clamp(2.6rem,6vw,4.6rem) 0 clamp(3rem,6vw,5rem);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,4vw,4rem);align-items:center}
.hero-eyebrow{margin-bottom:1.1rem}
.hero h1{font-size:clamp(2.3rem,5.6vw,4rem);color:var(--navy-ink)}
.hero h1 em{font-style:normal;color:var(--navy);position:relative}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:.06em;height:.28em;
  background:var(--aqua);opacity:.28;z-index:-1;border-radius:2px;
}
.hero-lead{font-size:1.14rem;color:var(--slate);margin:1.3rem 0 1.8rem;max-width:34rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.8rem}
.hero-tags{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.8rem}
.hero-tags span{
  font-size:.82rem;font-weight:500;color:var(--navy-deep);background:#fff;
  border:1px solid var(--line);padding:.4rem .85rem;border-radius:999px;
}

/* Retrato hexagonal */
.hero-media{position:relative;display:flex;justify-content:center}
.hex-frame{
  position:relative;width:min(100%,420px);aspect-ratio:1/1.14;
  clip-path:var(--hex);background:var(--navy);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);
}
.hex-frame img{width:100%;height:100%;object-fit:cover;object-position:center top}
.hex-outline{
  position:absolute;inset:auto;width:min(100%,420px);aspect-ratio:1/1.14;
  border:2px solid var(--aqua);clip-path:var(--hex);
  transform:translate(26px,26px);opacity:.5;z-index:-1;
}
.hero-badge{
  position:absolute;bottom:6%;left:-4%;background:#fff;border-radius:14px;
  box-shadow:var(--shadow);padding:.8rem 1rem;display:flex;align-items:center;gap:.7rem;
  max-width:230px;
}
.hero-badge .dot{width:38px;height:42px;background:var(--aqua-soft);clip-path:var(--hex);
  display:grid;place-items:center;flex:none;color:var(--navy)}
.hero-badge .dot svg{width:20px;height:20px}
.hero-badge b{font-family:var(--font-display);font-size:.9rem;display:block;color:var(--navy-ink)}
.hero-badge small{font-size:.76rem;color:var(--slate);line-height:1.35}

/* watermark hexágono */
.hero::before{
  content:"";position:absolute;top:-140px;right:-140px;width:460px;height:520px;
  background:var(--aqua);opacity:.05;clip-path:var(--hex);z-index:0;pointer-events:none;
}

/* ---------- Franja "qué es el dolor" ---------- */
.strip{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.strip::after{content:"";position:absolute;bottom:-120px;left:-80px;width:340px;height:380px;
  background:#fff;opacity:.04;clip-path:var(--hex)}
.strip .wrap{position:relative;z-index:1}
.strip-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:2.5rem;align-items:center}
.strip h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:.9rem}
.strip p{color:#cfe1ee;font-size:1.05rem}
.strip-alert{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);padding:1.4rem 1.5rem;
}
.strip-alert b{font-family:var(--font-display);color:#fff;font-size:1.05rem}
.strip-alert p{color:#bcd6e7;margin-top:.4rem}

/* ---------- Tarjetas de tratamiento ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.6rem 1.5rem;transition:transform .25s ease,box-shadow .25s ease,border-color .25s;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:transparent}
.card-ic{
  width:52px;height:58px;background:var(--aqua-soft);clip-path:var(--hex);
  display:grid;place-items:center;color:var(--navy);margin-bottom:1rem;
}
.card-ic svg{width:26px;height:26px}
.card h3{font-size:1.16rem;color:var(--navy-ink);margin-bottom:.5rem}
.card p{color:var(--slate);font-size:.96rem}

/* ---------- Clasificación (tabs) ---------- */
.class-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tabs{display:flex;flex-wrap:wrap;border-bottom:1px solid var(--line);background:var(--bg-alt)}
.tab{
  flex:1 1 auto;font-family:var(--font-display);font-weight:600;font-size:.94rem;
  padding:1rem .9rem;background:none;border:none;cursor:pointer;color:var(--slate);
  border-bottom:3px solid transparent;transition:.2s;min-width:120px;
}
.tab.active{color:var(--navy);background:var(--card);border-bottom-color:var(--aqua)}
.tab:hover{color:var(--navy)}
.tab-panels{padding:clamp(1.4rem,3vw,2.2rem)}
.tab-panel{display:none;animation:fade .35s ease}
.tab-panel.active{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.1rem}
.def{border-left:3px solid var(--aqua);padding-left:1rem}
.def h4{font-family:var(--font-display);color:var(--navy);font-size:1.02rem;margin-bottom:.2rem}
.def p{color:var(--slate);font-size:.94rem}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- Condiciones (accordion) ---------- */
.accordion{display:grid;gap:.8rem}
.acc-item{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:box-shadow .25s}
.acc-item.open{box-shadow:var(--shadow-sm)}
.acc-head{
  width:100%;display:flex;align-items:center;gap:1rem;text-align:left;
  padding:1.15rem 1.4rem;background:none;border:none;cursor:pointer;font-family:var(--font-display);
  font-weight:600;font-size:1.08rem;color:var(--navy-ink);
}
.acc-head .n{
  width:34px;height:38px;flex:none;background:var(--aqua-soft);clip-path:var(--hex);
  display:grid;place-items:center;color:var(--navy);font-size:.86rem;
}
.acc-head .chev{margin-left:auto;transition:transform .3s;color:var(--navy);flex:none}
.acc-item.open .chev{transform:rotate(180deg)}
.acc-body{max-height:0;overflow:hidden;transition:max-height .4s ease}
.acc-body-inner{padding:0 1.4rem 1.4rem 4.4rem}
.acc-body-inner p{color:var(--slate)}
.acc-body-inner .signs{margin-top:.9rem;display:grid;gap:.5rem}
.acc-body-inner .signs li{list-style:none;display:flex;gap:.6rem;color:var(--navy-ink);font-size:.95rem}
.acc-body-inner .signs li::before{content:"";width:9px;height:11px;background:var(--aqua);clip-path:var(--hex);margin-top:.45rem;flex:none}

/* ---------- Preanestésica ---------- */
.pre-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem}
.pre-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.7rem}
.pre-card h3{color:var(--navy);font-size:1.2rem;margin-bottom:.7rem;display:flex;align-items:center;gap:.6rem}
.pre-card h3 .h{width:16px;height:18px;background:var(--aqua);clip-path:var(--hex);flex:none}
.pre-card p{color:var(--slate);font-size:.98rem}
.pre-card ul{margin-top:.7rem;padding-left:1.1rem;color:var(--slate)}
.pre-card ul li{margin-bottom:.35rem}

/* ---------- Por qué elegirnos ---------- */
.why{background:var(--bg-alt)}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.why-card{text-align:center;padding:1.5rem}
.why-ic{width:66px;height:74px;margin:0 auto 1.1rem;background:var(--navy);clip-path:var(--hex);
  display:grid;place-items:center;color:#fff}
.why-ic svg{width:30px;height:30px}
.why-card h3{color:var(--navy-ink);font-size:1.2rem;margin-bottom:.4rem}
.why-card p{color:var(--slate);font-size:.97rem}

/* ---------- Doctor ---------- */
.doc-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(2rem,4vw,3.5rem);align-items:center}
.doc-media{position:relative;display:flex;justify-content:center}
.doc-media .hex-frame{width:min(100%,360px)}
.doc-media .hex-outline{width:min(100%,360px);transform:translate(-24px,24px);border-color:var(--navy);opacity:.35}
.doc-body h2{font-size:clamp(1.7rem,3.4vw,2.4rem);color:var(--navy-ink);margin:.6rem 0 1rem}
.doc-body>p{color:var(--slate);font-size:1.05rem;margin-bottom:1.4rem}
.creds{display:grid;gap:.7rem}
.cred{display:flex;gap:.9rem;align-items:flex-start;background:var(--card);border:1px solid var(--line);
  border-radius:12px;padding:.9rem 1.1rem}
.cred .h{width:15px;height:17px;background:var(--aqua);clip-path:var(--hex);flex:none;margin-top:.35rem}
.cred b{font-family:var(--font-display);color:var(--navy-ink);display:block;font-size:1rem}
.cred small{color:var(--slate);font-size:.85rem}
.cred-badge{display:inline-flex;align-items:center;gap:.5rem;margin-top:1.2rem;font-family:var(--font-display);
  font-weight:600;font-size:.9rem;color:var(--navy);background:var(--aqua-soft);padding:.5rem 1rem;border-radius:999px}

/* ---------- Galería ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.gallery figure{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.gallery img{width:100%;height:280px;object-fit:cover;transition:transform .5s ease}
.gallery figure:hover img{transform:scale(1.06)}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:1rem;color:#fff;font-size:.9rem;
  font-family:var(--font-display);background:linear-gradient(transparent,rgba(1,44,72,.85))}

/* ---------- Contacto ---------- */
.contact{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;top:-100px;right:-90px;width:380px;height:420px;
  background:#fff;opacity:.05;clip-path:var(--hex)}
.contact .wrap{position:relative;z-index:1}
.contact .eyebrow{color:#8fd4e6}
.contact .eyebrow::before{background:var(--aqua)}
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:2.4rem;align-items:start}
.contact h2{color:#fff;font-size:clamp(1.7rem,3.4vw,2.4rem);margin:.6rem 0 1.3rem}
.c-list{display:grid;gap:1rem;margin-bottom:1.6rem}
.c-item{display:flex;gap:.9rem;align-items:flex-start}
.c-item .ic{width:44px;height:50px;background:rgba(255,255,255,.1);clip-path:var(--hex);
  display:grid;place-items:center;flex:none;color:#8fd4e6}
.c-item .ic svg{width:20px;height:20px}
.c-item b{font-family:var(--font-display);display:block;font-size:.82rem;letter-spacing:.05em;
  text-transform:uppercase;color:#8fd4e6;margin-bottom:.15rem}
.c-item a,.c-item span{color:#fff;font-size:1.02rem}
.c-item a:hover{color:#8fd4e6}
.contact-actions{display:flex;flex-wrap:wrap;gap:.8rem}
.map{border-radius:var(--radius);overflow:hidden;border:1px solid rgba(255,255,255,.2);min-height:340px}
.map iframe{width:100%;height:100%;min-height:340px;border:0;display:block;filter:grayscale(.2)}

/* ---------- Footer ---------- */
.footer{background:var(--navy-deep);color:#a9c6d8;padding:2.4rem 0}
.footer-grid{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1.4rem;align-items:center}
.footer .brand img{height:38px;filter:brightness(0) invert(1);opacity:.9}
.footer small{font-size:.85rem;line-height:1.6}
.footer a{color:#cfe1ee}

/* ---------- WhatsApp flotante ---------- */
.wa-float{
  position:fixed;right:1.2rem;bottom:1.2rem;z-index:70;
  width:60px;height:60px;border-radius:50%;background:var(--wa);
  display:grid;place-items:center;box-shadow:0 12px 30px -8px rgba(37,211,102,.6);
  transition:transform .2s ease;
}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:32px;height:32px;color:#fff}
.wa-float::after{
  content:"";position:absolute;inset:0;border-radius:50%;border:2px solid var(--wa);
  animation:ping 2.4s cubic-bezier(0,0,.2,1) infinite;
}
@keyframes ping{75%,100%{transform:scale(1.5);opacity:0}}
@media (prefers-reduced-motion:reduce){.wa-float::after{animation:none}}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ============ RESPONSIVE ============ */
@media (max-width:960px){
  .hero-grid,.strip-grid,.doc-grid,.contact-grid{grid-template-columns:1fr}
  .hero-media{order:-1}
  .doc-media{order:-1}
  .cards,.why-grid,.gallery{grid-template-columns:repeat(2,1fr)}
  .pre-grid{grid-template-columns:1fr}
  .hero-badge{left:auto;right:0}
}
@media (max-width:760px){
  .nav-links{
    position:fixed;inset:64px 0 auto 0;flex-direction:column;background:var(--card);
    padding:1rem 1.4rem 1.6rem;gap:.2rem;box-shadow:var(--shadow);border-top:1px solid var(--line);
    transform:translateY(-120%);opacity:0;pointer-events:none;transition:.35s ease;
  }
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{width:100%;padding:.8rem 1rem;font-size:1.02rem}
  .nav-toggle{display:block}
  .nav-cta .btn-ghost{display:none}
  .nav.open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav.open .nav-toggle span:nth-child(2){opacity:0}
  .nav.open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}
@media (max-width:560px){
  .cards,.why-grid,.gallery{grid-template-columns:1fr}
  .acc-body-inner{padding-left:1.4rem}
  .hero-actions .btn,.contact-actions .btn{flex:1 1 auto}
  .gallery img{height:230px}
}