/*
  Sociedad Dante Alighieri — Ciudad de México
  Hoja de estilo compartida por todas las páginas del sitio.
  Extraída del mockup de la home (Home_LaDanteMX.html) — no inventar valores nuevos,
  ver dante-cdmx-design-system.md para el porqué de cada decisión.
*/
:root{
  --blu: #63BCE2;        /* Adriatico — azul de marca, del logo */
  --blu-suave: #EAF6FC;  /* tinte muy claro del azul, para fondos */
  --bordo: #A4293C;      /* Bordò — acento institucional, solo para la acción principal */
  --tinta: #1A1A1A;      /* texto principal */
  --tinta-60: rgba(26,26,26,.62);
  --carta: #FAFAF8;      /* fondo cálido, no blanco puro */
  --blanco: #FFFFFF;
  --linea: #E7E4DF;
  --radio: 2px;
  --display: 'Space Grotesk', sans-serif;
  --texto: 'Inter', sans-serif;
  --maxw: 1180px;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family: var(--texto);
  color: var(--tinta);
  background: var(--carta);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 32px;}
h1,h2,h3{font-family:var(--display); font-weight:600; letter-spacing:-0.01em; line-height:1.08;}
.eyebrow{
  display:flex; align-items:center; gap:10px;
  font-family:var(--texto); font-weight:600; font-size:12.5px;
  letter-spacing:.14em; text-transform:uppercase; color:var(--bordo);
  margin-bottom:16px;
}
.eyebrow .punto{width:8px; height:8px; border-radius:50%; background:var(--blu); flex:none;}
.eyebrow.claro{color:var(--blu);}
.eyebrow.claro .punto{background:var(--blanco);}

/* ---------- utility bar ---------- */
.utility{
  background: var(--tinta);
  color: rgba(255,255,255,.82);
  font-size: 13px;
}
.utility .wrap{display:flex; justify-content:flex-end; gap:28px; padding-top:9px; padding-bottom:9px;}
.utility a{display:flex; align-items:center; gap:7px; transition:color .15s;}
.utility a:hover{color:#fff;}
.utility svg{width:14px; height:14px; opacity:.9;}

/* ---------- header ---------- */
header{
  background: var(--blanco);
  border-bottom: 1px solid var(--linea);
  position: sticky; top:0; z-index:50;
}
header .wrap{display:flex; align-items:center; justify-content:space-between; padding-top:14px; padding-bottom:14px;}
.logo img{height:104px; width:auto;}
nav ul{list-style:none; display:flex; gap:34px;}
nav a{
  font-size:14px; font-weight:600; letter-spacing:.01em;
  padding:6px 0; border-bottom:2px solid transparent;
  transition: border-color .15s, color .15s;
}
nav a:hover, nav a[aria-current="page"]{border-bottom-color:var(--blu);}
.nav-toggle{display:none;}
.nav-toggle-label{display:none;}

/* ---------- landing header (simplificado, sin menú) ---------- */
header.header-lp .wrap{justify-content:center;}

/* ---------- hero slider (home) ---------- */
.hero-slider{
  position:relative;
  height: 640px;
  overflow:hidden;
  background: var(--tinta);
}
.slide{
  position:absolute; top:0; right:0; bottom:0; left:0;
  opacity:0; visibility:hidden;
  transition: opacity .7s ease;
  display:flex; align-items:flex-end;
}
.slide.active{opacity:1; visibility:visible; z-index:2;}
.slide-media{
  position:absolute; top:0; right:0; bottom:0; left:0;
  background-size: cover; background-position:center;
}
/* placeholder "photo" treatment — duotone tonal wash, a stand-in for real photography,
   en tonos azul de marca/tinta (sin amarillo: no es un color de marca verificado,
   solo aparecía como filtro fotográfico en el sitio anterior) */
.duo-1{ background: linear-gradient(135deg, #16323f 0%, #1A1A1A 45%, #63BCE2 100%); }
.duo-2{ background: linear-gradient(135deg, #63BCE2 0%, #1A1A1A 55%, #16323f 100%); }
.duo-3{ background: linear-gradient(135deg, #1A1A1A 0%, #2E6E8E 60%, #63BCE2 100%); }
.slide-media .tag-ph{
  position:absolute; left:24px; bottom:24px;
  font-size:11px; letter-spacing:.08em; text-transform:uppercase;
  color:rgba(255,255,255,.55); border:1px solid rgba(255,255,255,.3);
  padding:5px 10px; border-radius:2px;
}
.slide-scrim{
  position:absolute; top:0; right:0; bottom:0; left:0;
  background: linear-gradient(0deg, rgba(0,0,0,.55) 0%, rgba(0,0,0,.15) 45%, rgba(0,0,0,.05) 65%);
}
.slide-inner{position:relative; z-index:1; max-width:700px; padding-bottom:76px; color:#fff;}
.slide-inner .eyebrow{color:var(--blu);}
.slide-inner .eyebrow .punto{background:var(--blu);}
.slide-inner h1{font-size: clamp(30px, 4.6vw, 50px); text-transform:uppercase; margin-bottom:18px; color:#fff;}
.slide-inner p.lead{font-size:17px; color:rgba(255,255,255,.82); max-width:540px; margin-bottom:30px;}
.hero-actions{display:flex; align-items:center; gap:28px; flex-wrap:wrap;}

.arrow{
  position:absolute; top:50%; transform:translateY(-50%); z-index:3;
  width:44px; height:44px; border-radius:50%;
  background:rgba(255,255,255,.12); border:1px solid rgba(255,255,255,.35);
  display:flex; align-items:center; justify-content:center; cursor:pointer;
  transition: background .15s;
}
.arrow:hover{background:rgba(255,255,255,.24);}
.arrow svg{width:18px; height:18px; stroke:#fff;}
.arrow.prev{left:24px;} .arrow.next{right:24px;}
.dots{position:absolute; left:0; right:0; bottom:24px; z-index:3; display:flex; justify-content:center; gap:9px;}
.dot{width:8px; height:8px; border-radius:50%; background:rgba(255,255,255,.4); border:none; cursor:pointer; padding:0; transition: background .15s, transform .15s;}
.dot.active{background:#fff; transform:scale(1.25);}
.dot:focus-visible, .arrow:focus-visible{outline:2px solid #fff; outline-offset:2px;}
@media (prefers-reduced-motion: reduce){ .slide{transition:none;} }

/* ---------- page header (páginas interiores, sin slider) ---------- */
.page-header{background:var(--blu-suave); padding:72px 0 64px;}
.page-header .wrap{max-width:820px;}
.page-header h1{font-size:clamp(28px,4vw,42px); text-transform:uppercase; margin-bottom:16px;}
.page-header p.lead{font-size:16.5px; color:var(--tinta-60); max-width:640px;}
.page-header.oscuro{background:var(--tinta); color:#fff;}
.page-header.oscuro h1{color:#fff;}
.page-header.oscuro p.lead{color:rgba(255,255,255,.75);}

.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--texto); font-weight:700; font-size:14.5px;
  letter-spacing:.02em; text-transform:uppercase;
  padding:16px 30px; border-radius:var(--radio);
  transition: transform .15s, box-shadow .15s, background .15s;
  border:none; cursor:pointer;
}
.btn-primary{
  background: var(--bordo); color:#fff;
  box-shadow: 0 10px 24px -10px rgba(164,41,60,.55);
}
.btn-primary:hover{transform:translateY(-1px); box-shadow:0 14px 28px -10px rgba(164,41,60,.65);}
.link-quiet{
  display:inline-flex; align-items:center; gap:9px;
  font-weight:600; font-size:14.5px; color:var(--tinta);
  border-bottom:1px solid var(--linea); padding-bottom:2px;
  transition: border-color .15s, color .15s;
}
.link-quiet:hover{border-color:var(--tinta); color:var(--bordo);}
.link-quiet svg{width:17px; height:17px;}

/* ---------- trust strip ---------- */
.trust{display:grid; grid-template-columns: 1.1fr 1fr;}
.trust .panel{padding:64px 56px; text-align:center; display:flex; flex-direction:column; align-items:center;}
.trust .panel.blu{background:var(--blu); color:#fff;}
.trust .panel.carta{background:var(--blanco);}
.trust h2{font-size:26px; text-transform:uppercase; margin-bottom:18px; max-width:380px;}
.trust blockquote{font-size:17px; line-height:1.6; max-width:420px; font-style:normal; color:rgba(255,255,255,.92);}
.trust .stat{font-family:var(--display); font-size:44px; font-weight:700; margin-bottom:6px; text-transform:uppercase; letter-spacing:-0.01em;}
.trust .panel.carta p{color:var(--tinta-60); max-width:400px; margin-bottom:20px;}

/* ---------- orientation grid ---------- */
.orient{padding:104px 0 96px;}
.orient-head{max-width:600px; margin-bottom:56px;}
.orient-head h2{font-size:32px; text-transform:uppercase;}
.grid{display:grid; grid-template-columns:repeat(3, 1fr); gap:1px; background:var(--linea); border:1px solid var(--linea);}
.grid.grid-2{grid-template-columns:repeat(2, 1fr);}
.card{
  background:var(--blanco); padding:38px 34px;
  display:flex; flex-direction:column; gap:16px;
  transition: background .15s;
  min-height: 216px;
}
.card:hover{background: var(--blu-suave);}
.card .icon{color:var(--blu); margin-bottom:2px;}
.card .icon svg{width:30px; height:30px;}
.card h3{font-size:19px; text-transform:none; font-weight:600;}
.card p{font-size:14.5px; color:var(--tinta-60); flex:1;}
.card .go{font-size:13.5px; font-weight:700; display:inline-flex; align-items:center; gap:6px; letter-spacing:.02em;}
.card .go svg{width:14px; height:14px; transition:transform .15s;}
.card:hover .go svg{transform:translateX(3px);}

/* ---------- activities preview ---------- */
.activities{background:var(--tinta); color:#fff; padding:96px 0;}
.act-head{display:flex; justify-content:space-between; align-items:flex-end; margin-bottom:48px; flex-wrap:wrap; gap:20px;}
.act-head h2{color:#fff; font-size:30px; text-transform:uppercase; max-width:480px;}
.act-head .link-quiet{color:#fff; border-color:rgba(255,255,255,.3);}
.act-head .link-quiet:hover{color:var(--blu); border-color:var(--blu);}
.act-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:28px;}
.act-card{background:rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.12); padding:28px;}
.act-card .tag{font-size:11.5px; letter-spacing:.12em; text-transform:uppercase; color:var(--blu); font-weight:700; margin-bottom:14px; display:block;}
.act-card h3{font-size:18px; font-weight:600; margin-bottom:10px; text-transform:none;}
.act-card p{font-size:14px; color:rgba(255,255,255,.65);}
.act-note{font-size:12.5px; color:rgba(255,255,255,.45); margin-top:20px;}

/* ---------- bridge band ---------- */
.bridge{background:var(--blu-suave); padding:72px 0;}
.bridge .wrap{display:flex; align-items:center; justify-content:space-between; gap:32px; flex-wrap:wrap;}
.bridge p{font-family:var(--display); font-size:22px; font-weight:600; max-width:620px; line-height:1.3;}
.bridge .link-quiet{border-color:rgba(26,26,26,.25); white-space:nowrap;}

/* ---------- placeholder de contenido pendiente ---------- */
.pendiente{
  border:1.5px dashed var(--blu);
  background:var(--blu-suave);
  border-radius:4px;
  padding:40px 34px;
  margin:0 0 40px;
  color:var(--tinta-60);
  font-size:14.5px;
}
.pendiente strong{color:var(--tinta); display:block; font-family:var(--display); font-size:15px; text-transform:uppercase; letter-spacing:.02em; margin-bottom:8px;}
.contenido{padding:88px 0;}
.contenido.angosto .wrap{max-width:820px;}
.contenido + .contenido{padding-top:0;}

/* ---------- formulario simple (contacto / landing) ---------- */
.form-simple{display:flex; flex-direction:column; gap:18px; max-width:560px;}
.form-simple label{font-size:13.5px; font-weight:600; margin-bottom:7px; display:block;}
.form-simple input, .form-simple select, .form-simple textarea{
  width:100%; border:1px solid var(--linea); border-radius:2px;
  padding:14px 14px; font-family:var(--texto); font-size:16px; background:var(--blanco);
}
.form-simple input:focus, .form-simple select:focus, .form-simple textarea:focus{outline:2px solid var(--blu); outline-offset:1px;}
.form-simple textarea{min-height:120px; resize:vertical;}
.form-nota{font-size:12.5px; color:var(--tinta-60); margin-top:4px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex; flex-direction:column; gap:1px; background:var(--linea); border:1px solid var(--linea); max-width:820px;}
.faq-item{background:var(--blanco);}
.faq-item summary{
  padding:22px 26px; cursor:pointer; font-family:var(--display); font-weight:600;
  font-size:16px; list-style:none; display:flex; justify-content:space-between; align-items:center; gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{flex:none; width:22px; height:22px; color:var(--blu);}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item p{padding:0 26px 22px; color:var(--tinta-60); font-size:14.5px; max-width:680px;}

/* ---------- footer ---------- */
footer{background:var(--blanco); border-top:1px solid var(--linea); padding:72px 0 28px;}
.foot-grid{display:grid; grid-template-columns: 1.3fr 1fr 1fr 1.1fr; gap:40px; padding-bottom:52px;}
.foot-logo img{height:38px; margin-bottom:18px;}
.foot-grid p{font-size:13.5px; color:var(--tinta-60); max-width:260px;}
.foot-col h4{font-size:12.5px; text-transform:uppercase; letter-spacing:.1em; margin-bottom:18px; color:var(--tinta-60);}
.foot-col ul{list-style:none; display:flex; flex-direction:column; gap:11px;}
.foot-col a{font-size:14px;}
.foot-col a:hover{color:var(--bordo);}
.newsletter{display:flex; margin-top:14px; border:1px solid var(--linea);}
.newsletter input{flex:1; border:none; padding:12px 14px; font-family:var(--texto); font-size:16px; background:transparent;}
.newsletter input:focus{outline:none;}
.newsletter button{background:var(--tinta); color:#fff; border:none; padding:0 18px; font-size:13px; font-weight:700; cursor:pointer;}
.social{display:flex; gap:12px; margin-top:18px;}
.social a{width:34px; height:34px; border:1px solid var(--linea); border-radius:50%; display:flex; align-items:center; justify-content:center; transition:border-color .15s, background .15s;}
.social a:hover{border-color:var(--blu); background:var(--blu-suave);}
.social svg{width:15px; height:15px;}
.foot-bottom{border-top:1px solid var(--linea); padding-top:24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:14px; font-size:12.5px; color:var(--tinta-60);}
.foot-bottom .legal{display:flex; gap:24px;}
.foot-bottom .legal a:hover{color:var(--bordo);}

/* ---------- footer simplificado (landing) ---------- */
.foot-lp{background:var(--blanco); border-top:1px solid var(--linea); padding:36px 0;}
.foot-lp .wrap{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px; font-size:12.5px; color:var(--tinta-60);}
.foot-lp .legal{display:flex; gap:24px;}
.foot-lp .legal a:hover{color:var(--bordo);}

/* ---------- responsive ---------- */
@media (max-width: 980px){
  .trust{grid-template-columns:1fr;}
  .grid{grid-template-columns:repeat(2,1fr);}
  .act-grid{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width: 700px){
  .wrap{padding:0 20px;}
  .utility .wrap{justify-content:center; flex-wrap:wrap; gap:16px;}
  nav{
    position:fixed; top:0; right:0; bottom:0; left:auto; top:74px; width:78%; max-width:320px; height:calc(100% - 74px);
    background:#fff; border-left:1px solid var(--linea);
    transform:translateX(100%); transition:transform .25s ease; padding:36px 28px; z-index:60;
  }
  .nav-toggle:checked ~ nav{transform:translateX(0);}
  nav ul{flex-direction:column; gap:22px;}
  .nav-toggle-label{
    display:flex; align-items:center; justify-content:center;
    position:relative; width:44px; height:44px; cursor:pointer; z-index:61;
  }
  .nav-toggle-label span{
    position:absolute; left:11px; width:22px; height:2px; background:var(--tinta);
    transition: transform .25s ease, opacity .2s ease, top .25s ease;
  }
  .nav-toggle-label span:nth-child(1){top:15px;}
  .nav-toggle-label span:nth-child(2){top:21px;}
  .nav-toggle-label span:nth-child(3){top:27px;}
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1){top:21px; transform:rotate(45deg);}
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2){opacity:0;}
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3){top:21px; transform:rotate(-45deg);}
  .grid{grid-template-columns:1fr;}
  .grid.grid-2{grid-template-columns:1fr;}
  .act-grid{grid-template-columns:1fr;}
  .trust .panel{padding:44px 24px;}
  .foot-grid{grid-template-columns:1fr; gap:32px;}
  .hero-slider{height:600px;}
  .slide-inner{padding-bottom:56px;}
  .arrow{width:36px; height:36px; top:20px; transform:none;}
  .arrow.prev{left:12px;} .arrow.next{right:12px;}
  .bridge .wrap{flex-direction:column; align-items:flex-start;}
  .logo img{height:56px;}
  header .wrap{padding-top:10px; padding-bottom:10px;}
  nav a{display:block; padding:12px 0; font-size:16px;}
  .newsletter input{font-size:16px;}
  .card{padding:30px 26px;}
  .btn{width:100%; justify-content:center; text-align:center;}
  .hero-actions{flex-direction:column; align-items:flex-start; width:100%; gap:16px;}
  .page-header{padding:52px 0 44px;}
  .foot-lp .wrap{flex-direction:column; align-items:flex-start;}
}