/* ============================================================
   Smile Align Dental Center
   Estilos compartidos de las paginas de tratamiento.
   La portada (index.html) trae los suyos aparte por el video.
   ============================================================ */
:root{
  --canvas:#06305F; --canvas-2:#052546; --canvas-3:#03172E;
  --panel:#0A3B6E; --panel-2:#0E4881; --line:#1B4E82; --line-soft:#134070; --line-ui:#5285B0; --line-soft-ui:rgba(150,195,235,.2); --glow:0 20px 48px -26px rgba(2,10,20,.9);
  --accent:#4FC7C4; --accent-soft:#8FDEDC; --accent-deep:#2E9B98;
  --cta:#F2F8FC; --cta-ink:#071322;
  --tx:#F0F5F9; --tx2:#A9BECD; --tx3:#8AA3B6;
  --e:cubic-bezier(.22,.61,.36,1); --eo:cubic-bezier(.16,1,.3,1);
  --r:34px; --maxw:1180px;
}
*{box-sizing:border-box}
html,body{overflow-x:hidden;overflow-x:clip}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--canvas);color:var(--tx);
  font-family:Lato,system-ui,-apple-system,"Segoe UI",sans-serif;font-size:17px;line-height:1.74;
  -webkit-font-smoothing:antialiased;opacity:0;transition:opacity .6s var(--e)}
body.ready{opacity:1}
h1,h2,h3{font-family:"Playfair Display",Georgia,serif;font-weight:600;line-height:1.22;margin:0;letter-spacing:0}
p{margin:0}
a{color:inherit}
img,svg{max-width:100%;display:block}
.mono{font-family:Lato,system-ui,sans-serif;font-size:.94rem;font-weight:700;letter-spacing:.01em;text-transform:none;color:var(--accent)}
.wrap{width:min(100% - 2.5rem,var(--maxw));margin-inline:auto}
.skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--cta);color:var(--cta-ink);padding:.8rem 1.2rem;border-radius:10px;font-weight:600}
.skip:focus{left:1rem;top:1rem}
:focus-visible{outline:2.5px solid var(--accent);outline-offset:3px;border-radius:6px}

/* fondo fijo, un solo ambiente */
.env{position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(46% 38% at 82% 4%,rgba(79,199,196,.15),transparent 70%),
    radial-gradient(52% 42% at 6% 44%,rgba(120,150,220,.1),transparent 72%),
    radial-gradient(60% 46% at 92% 78%,rgba(60,150,200,.1),transparent 72%),
    linear-gradient(178deg,var(--canvas) 0%,var(--canvas-2) 52%,var(--canvas-3) 100%)}

/* ===== NAV con desplegables ===== */
.nav{position:sticky;top:0;z-index:80;display:flex;align-items:center;gap:1.1rem;
  padding:.7rem clamp(1rem,3vw,2rem);
  background:rgba(4,32,62,.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft)}
.brand{display:flex;align-items:center;gap:.55rem;text-decoration:none;flex:0 0 auto}
.brand svg{width:46px;height:35px;flex:0 0 auto}
.brand b{font-family:"Playfair Display",Georgia,serif;font-weight:600;font-size:1.14rem;letter-spacing:.02em;line-height:1;white-space:nowrap}
.brand i{display:block;font-style:normal;font-family:Lato,sans-serif;font-size:.66rem;letter-spacing:.06em;color:var(--tx2);margin-top:2px;white-space:nowrap}

.menu{display:flex;align-items:center;gap:.15rem;margin-left:auto;list-style:none;padding:0;margin-block:0}
.menu>li{position:relative}
.menu>li>a,.menu>li>button{
  display:inline-flex;align-items:center;gap:.34rem;white-space:nowrap;
  padding:.6rem .72rem;border-radius:14px;border:0;background:none;cursor:pointer;
  font-family:inherit;font-size:.86rem;line-height:1.2;min-height:38px;line-height:1.2;min-height:38px;line-height:1.2;min-height:38px;line-height:1.2;min-height:38px;line-height:1.2;min-height:38px;font-weight:500;color:var(--tx2);text-decoration:none;
  transition:color .3s var(--e),background .3s var(--e)}
.menu>li>a:hover,.menu>li>button:hover,.menu>li.open>button{color:var(--tx);background:rgba(79,199,196,.1)}
.menu .caret{width:9px;height:9px;border-right:1.8px solid currentColor;border-bottom:1.8px solid currentColor;
  transform:rotate(45deg) translateY(-2px);transition:transform .35s var(--eo);flex:0 0 auto}
.menu>li.open .caret{transform:rotate(-135deg) translateY(-2px)}
.submenu{position:absolute;top:calc(100% + .4rem);left:0;min-width:236px;
  background:rgba(5,36,68,.985);border:1px solid var(--line-ui);border-radius:24px;
  padding:.4rem;list-style:none;margin:0;box-shadow:0 24px 50px -20px rgba(2,8,16,.85);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .3s var(--e),transform .3s var(--eo),visibility .3s}
.menu>li.open .submenu{opacity:1;visibility:visible;transform:none}
.submenu a{display:block;padding:.62rem .85rem;border-radius:14px;font-size:.87rem;
  color:var(--tx2);text-decoration:none;transition:color .25s var(--e),background .25s var(--e)}
.submenu a:hover,.submenu a[aria-current=page]{color:var(--tx);background:rgba(79,199,196,.13)}
.submenu a small{display:block;font-size:.72rem;color:var(--tx3);margin-top:1px}
.navcta{display:flex;gap:.45rem;flex:0 0 auto;margin-left:.5rem}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line-ui);border-radius:10px;
  width:44px;height:44px;cursor:pointer;padding:0;align-items:center;justify-content:center;color:var(--tx)}
.burger span{display:block;width:18px;height:1.8px;background:currentColor;position:relative;transition:background .2s}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:1.8px;background:currentColor;transition:transform .35s var(--eo)}
.burger span::before{top:-6px}.burger span::after{top:6px}
body.nav-open .burger span{background:transparent}
body.nav-open .burger span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .burger span::after{transform:translateY(-6px) rotate(-45deg)}

@media(max-width:1140px){
  .menu{position:fixed;inset:64px 0 auto;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(4,34,64,.995);border-bottom:1px solid var(--line-ui);
    padding:.6rem clamp(1rem,3vw,2rem) 1.4rem;max-height:calc(100dvh - 64px);overflow-y:auto;
    transform:translateY(-14px);opacity:0;visibility:hidden;transition:all .35s var(--eo)}
  body.nav-open .menu{transform:none;opacity:1;visibility:visible}
  .menu>li>a,.menu>li>button{width:100%;justify-content:space-between;padding:.9rem .4rem;font-size:.98rem;min-height:44px}
  .submenu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;
    border:0;border-left:1px solid var(--line-ui);border-radius:0;margin:0 0 .5rem .5rem;
    padding:0 0 0 .6rem;max-height:0;overflow:hidden;transition:max-height .4s var(--eo)}
  .menu>li.open .submenu{max-height:520px}
  .submenu a{min-height:44px;display:flex;flex-direction:column;justify-content:center}
  .burger{display:inline-flex}
  .navcta .btn-ghost{display:none}
  .navcta{margin-left:0}
}

/* ===== botones ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.78rem 1.5rem;border-radius:999px;font-weight:600;font-size:.94rem;
  text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;white-space:nowrap;
  transition:transform .35s var(--eo),background .35s var(--e),box-shadow .35s var(--e),border-color .35s var(--e)}
.btn-solid{background:var(--cta);color:var(--cta-ink);box-shadow:0 10px 30px -12px rgba(79,199,196,.45)}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 16px 38px -12px rgba(79,199,196,.6)}
.btn-ghost{background:rgba(234,243,250,.05);color:var(--tx);border-color:var(--line-ui)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--accent);background:rgba(79,199,196,.1)}
.btn-sm{padding:.55rem 1.05rem;font-size:.85rem}
@media(pointer:coarse){.btn{min-height:44px}}

/* ===== migas ===== */
.migas{padding:1.4rem 0 0;font-size:.82rem;color:var(--tx3)}
.migas a{text-decoration:none;transition:color .3s var(--e)}
.migas a:hover{color:var(--accent-soft)}
.migas span{margin:0 .45rem;opacity:.5}

/* ===== encabezado de tratamiento ===== */
.thero{padding:clamp(2rem,5vw,3.4rem) 0 clamp(2.4rem,5vw,3.6rem);position:relative}
.thero-grid{display:grid;gap:2.6rem;align-items:center}
@media(min-width:900px){.thero-grid{grid-template-columns:1.06fr .94fr;gap:4rem}}
.thero h1{font-size:clamp(2.4rem,5.6vw,4.05rem);letter-spacing:-.02em}
.thero .lede{color:var(--tx2);font-size:1.1rem;margin-top:1.2rem;max-width:52ch}
.thero-cta{margin-top:2rem;display:flex;gap:.7rem;flex-wrap:wrap}
.precio-chip{display:inline-flex;align-items:baseline;gap:.6rem;margin-top:1.7rem;
  padding:.75rem 1.25rem;border-radius:24px;background:rgba(79,199,196,.09);
  border:1px solid var(--accent-deep)}
.precio-chip .d{font-family:Lato,sans-serif;font-size:.9rem;font-weight:700;letter-spacing:.01em;text-transform:none;color:var(--accent-soft)}
.precio-chip .n{font-family:"Playfair Display",Georgia,serif;font-size:2.05rem;line-height:1;color:var(--tx)}
.precio-chip .u{font-size:.82rem;color:var(--tx3)}

/* dibujo por tratamiento */
.thero-art{border-radius:44px;border:1px solid var(--line-soft-ui);box-shadow:inset 0 1px 0 rgba(255,255,255,.055),var(--glow);overflow:hidden;
  background:linear-gradient(168deg,rgba(16,70,124,.54),rgba(7,19,34,.72));padding:1.9rem 1.7rem;display:grid;place-items:center}
.thero-art svg{width:100%;height:auto}

/* ===== secciones ===== */
main{position:relative;z-index:1}
section{position:relative;padding:clamp(3.4rem,7vw,5.6rem) 0}
.kicker{display:flex;align-items:center;gap:.7rem;margin-bottom:1rem}
.kicker::before{content:"";width:30px;height:1px;background:var(--accent);opacity:.75}
.h2{font-size:clamp(1.85rem,4vw,2.9rem);letter-spacing:-.02em;max-width:20ch}
.lede{color:var(--tx2);font-size:1.04rem;max-width:58ch;margin-top:1rem}
.rev{opacity:0;transform:translateY(24px);transition:opacity .8s var(--eo),transform .8s var(--eo)}
.rev.in{opacity:1;transform:none}

/* ===== para quien es / para quien no ===== */
.paraquien{display:grid;gap:1.1rem;margin-top:2.4rem}
@media(min-width:820px){.paraquien{grid-template-columns:1fr 1fr;gap:1.3rem}}
.pq{padding:2.1rem 1.9rem;border-radius:var(--r);border:1px solid var(--line-soft-ui);box-shadow:inset 0 1px 0 rgba(255,255,255,.055),var(--glow);
  background:linear-gradient(168deg,rgba(14,66,116,.6),rgba(8,45,84,.5))}
.pq.no{background:rgba(30,20,30,.34);border-color:#5C4A63}
.pq h3{font-size:1.5rem;margin-bottom:1.1rem;display:flex;align-items:center;gap:.6rem}
.pq h3 svg{width:22px;height:22px;flex:0 0 auto}
.pq.si h3 svg{color:var(--accent)}
.pq.no h3 svg{color:#C99BD6}
.pq ul{list-style:none;margin:0;padding:0;display:grid;gap:.8rem;color:var(--tx2);font-size:.97rem}
.pq li{display:grid;grid-template-columns:16px 1fr;gap:.7rem;align-items:baseline}
.pq li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:.55em}
.pq.no li::before{background:#C99BD6}

/* ===== datos duros ===== */
.datos{display:grid;gap:1rem;margin-top:2.4rem}
@media(min-width:700px){.datos{grid-template-columns:repeat(3,1fr)}}
.dato{padding:1.9rem 1.7rem;border-radius:var(--r);border:1px solid var(--line-soft-ui);box-shadow:inset 0 1px 0 rgba(255,255,255,.055),var(--glow);background:linear-gradient(168deg,rgba(14,66,116,.54),rgba(8,45,84,.44))}
.dato .n{font-family:"Playfair Display",Georgia,serif;font-size:2.5rem;line-height:1;color:var(--accent-soft)}
.dato .t{font-family:Lato,sans-serif;font-size:.9rem;font-weight:700;letter-spacing:.01em;text-transform:none;color:var(--tx2);margin:.7rem 0 .5rem}
.dato p{color:var(--tx2);font-size:.93rem}

/* ===== pasos ===== */
.pasos{display:grid;gap:1.1rem;margin-top:2.4rem}
@media(min-width:880px){.pasos{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.3rem}}
.paso{padding:2rem 1.8rem;border-radius:var(--r);border:1px solid var(--line-soft-ui);box-shadow:inset 0 1px 0 rgba(255,255,255,.055),var(--glow);background:linear-gradient(168deg,rgba(14,66,116,.54),rgba(8,45,84,.44));
  transition:border-color .4s var(--e),transform .4s var(--eo)}
.paso:hover{border-color:var(--accent-deep);transform:translateY(-3px)}
.paso .num{font-family:Lato,sans-serif;font-size:.88rem;font-weight:700;letter-spacing:.01em;color:var(--accent);display:block;margin-bottom:.9rem}
.paso h4{font-family:"Playfair Display",Georgia,serif;font-size:1.42rem;margin:0 0 .5rem}
.paso p{color:var(--tx2);font-size:.95rem}

/* ===== mitos ===== */
.mitos{display:grid;gap:.9rem;margin-top:2.4rem}
.mito{padding:1.8rem 1.9rem;border-radius:var(--r);border:1px solid var(--line-soft-ui);box-shadow:inset 0 1px 0 rgba(255,255,255,.055),var(--glow);background:linear-gradient(168deg,rgba(14,66,116,.5),rgba(8,45,84,.4))}
.mito .q{font-family:"Playfair Display",Georgia,serif;font-size:1.32rem;color:var(--tx);margin-bottom:.7rem}
.mito .a{color:var(--tx2);font-size:.97rem}
.mito .a b{color:var(--accent-soft);font-weight:600}

/* ===== tabla comparativa ===== */
.tabla-wrap{margin-top:2.4rem;overflow-x:auto;border-radius:var(--r);border:1px solid var(--line-soft-ui);box-shadow:inset 0 1px 0 rgba(255,255,255,.055),var(--glow)}
table{width:100%;border-collapse:collapse;min-width:520px;background:rgba(16,36,60,.4)}
th,td{padding:1rem 1.15rem;text-align:left;border-bottom:1px solid var(--line-soft);font-size:.94rem}
th{font-family:Lato,sans-serif;font-size:.9rem;letter-spacing:.01em;text-transform:none;color:var(--accent-soft);font-weight:700}
td{color:var(--tx2)}
td:first-child{color:var(--tx);font-weight:500}
tr:last-child td{border-bottom:0}

/* ===== FAQ ===== */
.faq{margin-top:2.4rem;display:grid;gap:.65rem}
.qa{border-radius:24px;border:1px solid var(--line-ui);background:rgba(12,60,106,.44);overflow:hidden;transition:border-color .4s var(--e)}
.qa[open]{border-color:var(--accent-deep)}
.qa summary{list-style:none;cursor:pointer;padding:1.15rem 3.1rem 1.15rem 1.4rem;position:relative;font-weight:600;font-size:1rem;min-height:44px}
.qa summary::-webkit-details-marker{display:none}
.qa summary:hover{color:var(--accent-soft)}
.qa summary::after{content:"";position:absolute;right:1.4rem;top:1.45rem;width:10px;height:10px;
  border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(45deg);transition:transform .4s var(--eo)}
.qa[open] summary::after{transform:rotate(-135deg)}
.qa .a{padding:0 1.4rem 1.3rem;color:var(--tx2);font-size:.97rem;max-width:72ch}

/* ===== otros tratamientos ===== */
.otros{display:grid;gap:.9rem;margin-top:2.4rem}
@media(min-width:640px){.otros{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}}
.otro{display:block;padding:1.35rem 1.4rem;border-radius:34px;border:1px solid var(--line-ui);
  background:rgba(12,60,106,.44);text-decoration:none;transition:all .4s var(--e)}
.otro:hover{border-color:var(--accent-deep);background:rgba(16,70,124,.58);transform:translateY(-3px)}
.otro strong{display:block;font-family:"Playfair Display",Georgia,serif;font-size:1.3rem;font-weight:600;margin-bottom:.3rem}
.otro span{color:var(--tx3);font-size:.86rem}

/* ===== cierre ===== */
.cierre{text-align:center;background:linear-gradient(180deg,transparent,rgba(3,24,48,.6))}
.cierre h2{font-size:clamp(2rem,4.8vw,3.3rem);margin-inline:auto;max-width:18ch}
.cierre .lede{margin-inline:auto}
.cierre-cta{margin-top:2rem;display:flex;gap:.7rem;justify-content:center;flex-wrap:wrap}
.cierre .fine{margin-top:1.4rem;font-size:.84rem;color:var(--tx3)}

/* ===== pie ===== */
footer{border-top:1px solid var(--line-soft);padding:3.2rem 0 2.2rem;background:rgba(3,22,44,.62);position:relative;z-index:1}
.fgrid{display:grid;gap:2rem}
@media(min-width:860px){.fgrid{grid-template-columns:1.35fr 1fr 1fr 1fr}}
.fgrid h5{margin:0 0 .85rem;font-family:"Playfair Display",Georgia,serif;font-size:1.02rem;letter-spacing:0;text-transform:none;color:var(--tx);font-weight:600}
.fgrid ul{list-style:none;margin:0;padding:0;display:grid;gap:.45rem;font-size:.9rem;color:var(--tx2)}
.fgrid a{text-decoration:none;transition:color .3s var(--e)}
.fgrid a:hover{color:var(--accent-soft)}
.fbrand p{color:var(--tx2);font-size:.9rem;margin-top:.85rem;max-width:36ch}
.socials{display:flex;gap:.55rem;margin-top:1.1rem}
.socials a{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line-ui);color:var(--tx2);transition:all .4s var(--e)}
.socials a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.socials svg{width:17px;height:17px}
.legal{margin-top:2.4rem;padding-top:1.5rem;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:.55rem 1.4rem;justify-content:space-between;font-size:.78rem;color:var(--tx3)}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;transition-delay:0s!important;scroll-behavior:auto!important}
  .rev{opacity:1!important;transform:none!important}
}

/* ===== blog ===== */
.posts{display:grid;gap:1.1rem}
@media(min-width:760px){.posts{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.3rem}}
.post{display:block;padding:2rem 1.9rem;border-radius:var(--r);text-decoration:none;
  border:1px solid var(--line-soft-ui);box-shadow:inset 0 1px 0 rgba(255,255,255,.055),var(--glow);
  background:linear-gradient(168deg,rgba(14,66,116,.54),rgba(8,45,84,.44));
  transition:transform .45s var(--eo),border-color .45s var(--e)}
.post:hover{transform:translateY(-4px);border-color:rgba(79,199,196,.4)}
.post .cat{display:inline-block;font-size:.86rem;font-weight:700;color:var(--accent);margin-bottom:.8rem}
.post h2{font-size:1.5rem;line-height:1.28;margin-bottom:.7rem}
.post p{color:var(--tx2);font-size:.97rem}
.post .pie{display:block;margin-top:1.2rem;font-size:.86rem;color:var(--tx3)}

/* ===== articulo ===== */
.art{padding:clamp(2rem,5vw,3.4rem) 0 clamp(2rem,4vw,3rem)}
.art-cab{max-width:760px}
.art-cab h1{font-size:clamp(2.1rem,4.6vw,3.3rem);margin-top:.3rem}
.art-meta{margin-top:1.4rem;font-size:.9rem;color:var(--tx3)}
.art-cuerpo{max-width:680px;margin-top:2.6rem}
.art-cuerpo h2{font-size:clamp(1.5rem,2.8vw,1.95rem);margin:2.6rem 0 .9rem}
.art-cuerpo h2:first-child{margin-top:0}
.art-cuerpo p{color:var(--tx2);font-size:1.06rem;margin-bottom:1.1rem}
.art-cuerpo ul{list-style:none;margin:0 0 1.6rem;padding:0;display:grid;gap:.75rem}
.art-cuerpo li{display:grid;grid-template-columns:16px 1fr;gap:.75rem;align-items:baseline;color:var(--tx2);font-size:1.02rem}
.art-cuerpo li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:.6em}