/* ============================================
   EDIFICIO VALENCIA - Hoja de estilos global
   ============================================ */
:root{
  --azul:#1e4fd8;
  --azul-osc:#163aa3;
  --rojo:#d62828;
  --rojo-osc:#a61f1f;
  --gris-bg:#f5f7fa;
  --gris-tx:#3a3a3a;
  --negro:#000000;
  --blanco:#ffffff;
  --sombra:0 4px 12px rgba(0,0,0,.08);
  --radio:10px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{overflow-x:clip;width:100%;max-width:100%}
body{
  font-family:'Segoe UI',Tahoma,Verdana,sans-serif;
  background:var(--gris-bg);
  color:var(--gris-tx);
  line-height:1.6;
  padding-top:90px;
}

/* ===== NAV ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:var(--blanco);
  box-shadow:var(--sombra);
  padding:.6rem 1rem;
}
.nav-inner{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  gap:1rem;flex-wrap:wrap;
}
.nav-logo{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--azul);}
.nav-logo img{height:55px;width:auto}
.nav-logo span{font-weight:700;font-size:1.05rem;color:var(--azul)}
.nav-toggle{
  display:none;background:var(--azul);color:#fff;border:0;
  padding:.5rem .8rem;border-radius:6px;font-size:1.4rem;cursor:pointer;
}
.nav-links{display:flex;gap:.4rem;flex-wrap:wrap;list-style:none}
.nav-links a{
  text-decoration:none;color:var(--gris-tx);
  padding:.5rem .85rem;border-radius:6px;
  font-weight:500;font-size:.92rem;transition:.2s;
}
.nav-links a:hover,.nav-links a.activa{background:var(--azul);color:#fff}

@media(max-width:900px){
  body{padding-top:80px}
  .nav-toggle{display:block}
  .nav-links{
    display:none;width:100%;flex-direction:column;
    background:#fff;padding:.5rem 0;margin-top:.5rem;
    border-top:1px solid #eee;
  }
  .nav-links.abierto{display:flex}
  .nav-links a{border-radius:0;padding:.8rem 1rem}
  .nav-logo span{font-size:.9rem}
  .nav-logo img{height:45px}
}

/* ===== HERO ===== */
.hero{
  background:linear-gradient(135deg,var(--negro) 0%,var(--azul-osc) 100%);
  color:#fff;padding:3.5rem 1.5rem;text-align:center;
}
.hero img.logo-hero{max-width:280px;width:80%;background:#fff;padding:1rem;border-radius:var(--radio);margin-bottom:1.5rem}
.hero h1{font-size:2.2rem;margin-bottom:.5rem}
.hero p{font-size:1.1rem;opacity:.95;max-width:700px;margin:0 auto}

/* ===== SECCIONES ===== */
.cont{max-width:1100px;margin:0 auto;padding:2.5rem 1.5rem}
h2{color:var(--azul);font-size:1.8rem;margin-bottom:1.2rem;border-bottom:3px solid var(--rojo);padding-bottom:.4rem;display:inline-block}
h3{color:var(--azul-osc);margin:1.2rem 0 .5rem}
p{margin-bottom:.8rem}

/* ===== TARJETAS ===== */
.grid{display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin-top:1.2rem}
.card{
  background:#fff;border-radius:var(--radio);
  box-shadow:var(--sombra);overflow:hidden;
  transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(0,0,0,.12)}
.card img{width:100%;height:200px;object-fit:cover;display:block}
.card-body{padding:1.1rem}
.card h3{margin-top:0;color:var(--azul)}
.card a.btn{margin-top:auto;display:inline-block}

/* ===== BOTONES ===== */
.btn{
  display:inline-block;background:var(--azul);color:#fff;
  padding:.7rem 1.3rem;border:0;border-radius:6px;cursor:pointer;
  font-size:.95rem;text-decoration:none;font-weight:500;transition:.2s;
}
.btn:hover{background:var(--azul-osc)}
.btn-rojo{background:var(--rojo)}.btn-rojo:hover{background:var(--rojo-osc)}
.btn-verde{background:#25D366}.btn-verde:hover{background:#1da851}
.btn-secundario{background:#6c757d}.btn-secundario:hover{background:#545b62}

/* ===== FORMULARIOS ===== */
form.bloq{background:#fff;padding:1.5rem;border-radius:var(--radio);box-shadow:var(--sombra);max-width:600px;margin:1.5rem auto}
label{display:block;margin:.8rem 0 .3rem;font-weight:500}
input,textarea,select{
  width:100%;padding:.7rem;border:1px solid #ccc;
  border-radius:6px;font-family:inherit;font-size:.95rem;
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--azul);box-shadow:0 0 0 3px rgba(30,79,216,.15)}
textarea{min-height:120px;resize:vertical}

/* ===== TABLA ===== */
table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radio);overflow:hidden;box-shadow:var(--sombra);margin-top:1rem}
th,td{padding:.85rem 1rem;text-align:left;border-bottom:1px solid #eee}
th{background:var(--azul);color:#fff;font-weight:600}
tr:last-child td{border-bottom:0}
tr:hover{background:#f9fafb}

/* ===== ALERTAS ===== */
.alerta{padding:1rem;border-radius:var(--radio);margin:1rem 0;font-weight:500}
.alerta-info{background:#e7f0ff;color:#163aa3;border-left:4px solid var(--azul)}
.alerta-ok{background:#d4edda;color:#155724;border-left:4px solid #28a745}
.alerta-warn{background:#fff3cd;color:#856404;border-left:4px solid #ffc107}
.alerta-err{background:#f8d7da;color:#721c24;border-left:4px solid var(--rojo)}

/* ===== GALERÍA FOTOS ===== */
.galeria{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1rem;margin-top:1.2rem}
.galeria img{width:100%;height:240px;object-fit:cover;border-radius:var(--radio);box-shadow:var(--sombra);cursor:pointer;transition:transform .25s}
.galeria img:hover{transform:scale(1.03)}

/* ===== CHAT ===== */
.chat-box{
  background:#fff;border-radius:var(--radio);box-shadow:var(--sombra);
  height:450px;overflow-y:auto;padding:1rem;margin-top:1rem;
  display:flex;flex-direction:column;gap:.6rem;
}
.msg{padding:.7rem 1rem;border-radius:12px;max-width:75%;word-wrap:break-word}
.msg-mio{background:var(--azul);color:#fff;align-self:flex-end;border-bottom-right-radius:3px}
.msg-otro{background:#e9ecef;color:#333;align-self:flex-start;border-bottom-left-radius:3px}
.msg .meta{display:block;font-size:.72rem;opacity:.75;margin-bottom:.2rem}
.msg .archivo{display:inline-block;margin-top:.4rem;padding:.3rem .6rem;background:rgba(255,255,255,.25);border-radius:4px;font-size:.85rem;text-decoration:none;color:inherit}

/* ===== NOTIFICACIÓN ===== */
.notif{
  background:#fff;border-radius:var(--radio);box-shadow:var(--sombra);
  padding:1.2rem;margin-bottom:1rem;border-left:5px solid var(--azul);
}
.notif h4{color:var(--azul);margin-bottom:.3rem}
.notif .meta{font-size:.85rem;color:#666;margin-bottom:.6rem}

/* ===== FOOTER ===== */
footer{
  background:var(--azul-osc);color:#fff;
  text-align:center;padding:1.5rem 1rem;margin-top:3rem;
}
footer a{color:#fff;text-decoration:underline}

/* ===== SCROLL TOP ===== */
.scroll-top{
  position:fixed;bottom:1.2rem;right:1.2rem;
  background:var(--rojo);color:#fff;border:0;
  width:50px;height:50px;border-radius:50%;
  font-size:1.5rem;cursor:pointer;box-shadow:var(--sombra);
  display:none;z-index:999;transition:.2s;
}
.scroll-top:hover{background:var(--rojo-osc);transform:scale(1.1)}
.scroll-top.visible{display:block}

@media(max-width:600px){
  .hero h1{font-size:1.6rem}
  .hero p{font-size:.95rem}
  h2{font-size:1.4rem}
  .cont{padding:1.5rem 1rem}
}