/* ============================================================
   Soluciones Alva — Estilos principales
   Rojo: #C62828 | Gris: #4A4A4A | Blanco: #FFFFFF
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Barlow:wght@300;400;600;700;900&family=Barlow+Condensed:wght@400;600;700;900&display=swap');

:root {
  --rojo:       #C62828;
  --rojo-osc:   #8e1c1c;
  --rojo-claro: #ef5350;
  --gris:       #4A4A4A;
  --gris-claro: #f5f5f5;
  --gris-med:   #9e9e9e;
  --blanco:     #FFFFFF;
  --negro:      #1a1a1a;
  --sombra:     0 4px 24px rgba(0,0,0,.09);
  --sombra-lg:  0 12px 40px rgba(0,0,0,.15);
  --radius:     6px;
  --trans:      .25s ease;
  --ft:         'Barlow Condensed', sans-serif;
  --fb:         'Barlow', sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--fb);font-size:16px;color:var(--gris);background:var(--blanco);line-height:1.65;overflow-x:hidden}
h1,h2,h3,h4,h5,h6{font-family:var(--ft);font-weight:700;color:var(--negro);letter-spacing:-.3px}
a{color:var(--rojo);text-decoration:none;transition:color var(--trans)}
a:hover{color:var(--rojo-osc)}
img{max-width:100%;height:auto;display:block}

/* NAVBAR */
#navbar{background:var(--blanco);border-bottom:3px solid var(--rojo);padding:0;position:sticky;top:0;z-index:1000;transition:box-shadow var(--trans)}
#navbar.scrolled{box-shadow:var(--sombra)}
#navbar .navbar-brand{display:flex;align-items:center;gap:10px;padding:8px 0}
.brand-logo{height:46px;width:auto}
.brand-name{font-family:var(--ft);font-size:1.5rem;font-weight:900;color:var(--negro);letter-spacing:-1px;line-height:1}
.brand-name span{color:var(--rojo)}
.navbar-nav .nav-link{font-family:var(--fb);font-weight:600;font-size:.8rem;color:var(--gris)!important;padding:1.1rem .75rem!important;text-transform:uppercase;letter-spacing:.5px;position:relative;transition:color var(--trans)}
.navbar-nav .nav-link::after{content:'';position:absolute;bottom:0;left:.75rem;right:.75rem;height:3px;background:var(--rojo);transform:scaleX(0);transition:transform var(--trans)}
.navbar-nav .nav-link:hover,.navbar-nav .nav-link.active{color:var(--rojo)!important}
.navbar-nav .nav-link:hover::after,.navbar-nav .nav-link.active::after{transform:scaleX(1)}
.navbar-toggler{border:none;padding:6px}
.navbar-toggler:focus{box-shadow:none}

/* BOTONES */
.btn-alva{background:var(--rojo);color:var(--blanco)!important;font-family:var(--ft);font-weight:700;font-size:1rem;letter-spacing:.5px;text-transform:uppercase;padding:.7rem 2.2rem;border:2px solid var(--rojo);border-radius:var(--radius);display:inline-block;cursor:pointer;transition:background var(--trans),transform var(--trans),box-shadow var(--trans)}
.btn-alva:hover{background:var(--rojo-osc);border-color:var(--rojo-osc);transform:translateY(-2px);box-shadow:0 6px 20px rgba(198,40,40,.35)}
.btn-alva:disabled{opacity:.7;cursor:not-allowed;transform:none}
.btn-alva-outline{background:transparent;color:var(--rojo)!important;font-family:var(--ft);font-weight:700;font-size:1rem;letter-spacing:.5px;text-transform:uppercase;padding:.7rem 2.2rem;border:2px solid var(--rojo);border-radius:var(--radius);display:inline-block;transition:all var(--trans)}
.btn-alva-outline:hover{background:var(--rojo);color:var(--blanco)!important;transform:translateY(-2px)}

/* HERO */
#hero{position:relative;min-height:88vh;display:flex;align-items:center;overflow:hidden;background:var(--negro)}
.hero-bg{position:absolute;inset:0;background:linear-gradient(135deg,rgba(198,40,40,.85) 0%,rgba(26,26,26,.97) 55%),url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.025'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");background-size:cover,60px 60px}
.hero-content{position:relative;z-index:1;padding:110px 0 90px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.82);font-size:.75rem;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;padding:.4rem 1rem;border-radius:50px;margin-bottom:1.5rem}
.hero-badge::before{content:'';width:6px;height:6px;background:var(--rojo-claro);border-radius:50%;animation:pdot 2s infinite}
@keyframes pdot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(1.5)}}
.hero-title{font-family:var(--ft);font-size:clamp(2.5rem,5.5vw,4.4rem);font-weight:900;color:var(--blanco);line-height:1.05;margin-bottom:1.4rem;letter-spacing:-1.5px}
.hero-title .accent{color:var(--rojo-claro)}
.hero-desc{font-size:1.05rem;color:rgba(255,255,255,.72);max-width:560px;margin-bottom:2.4rem;font-weight:300;line-height:1.85}
.hero-btns{display:flex;flex-wrap:wrap;gap:1rem}
.hero-stats{display:flex;gap:2.5rem;flex-wrap:wrap;margin-top:3rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,.1)}
.stat-num{font-family:var(--ft);font-size:2.1rem;font-weight:900;color:var(--blanco);line-height:1}
.stat-num em{color:var(--rojo-claro);font-style:normal}
.stat-label{font-size:.72rem;color:rgba(255,255,255,.45);text-transform:uppercase;letter-spacing:.8px;margin-top:2px}
.hero-cards{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.hero-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);backdrop-filter:blur(8px);border-radius:10px;padding:1.6rem 1.4rem;transition:transform var(--trans),background var(--trans)}
.hero-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.1)}
.hero-card-icon{width:46px;height:46px;background:rgba(198,40,40,.18);border:1px solid rgba(198,40,40,.35);border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:.9rem}
.hero-card-icon svg{width:24px;height:24px;fill:var(--rojo-claro)}
.hero-card h4{color:var(--blanco);font-size:.95rem;margin-bottom:.2rem;letter-spacing:0}
.hero-card p{color:rgba(255,255,255,.45);font-size:.8rem;margin:0}

/* SECTION HEADERS */
.section-label{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--rojo);margin-bottom:.5rem}
.section-title{font-family:var(--ft);font-size:clamp(1.8rem,3.5vw,2.8rem);font-weight:900;line-height:1.1;color:var(--negro);letter-spacing:-1px}
.section-title .accent{color:var(--rojo)}
.section-sep{width:50px;height:4px;background:var(--rojo);border-radius:2px;margin:.9rem 0 1.5rem}
.section-sep.center{margin:.9rem auto 1.5rem}

/* SECCIONES */
section{padding:90px 0}
#servicios{background:var(--gris-claro)}
#nosotros{background:var(--blanco)}
#contacto{background:var(--gris-claro)}

/* SERVICE CARDS */
.service-card{background:var(--blanco);border-radius:10px;padding:2rem 1.8rem;border:1px solid #e8e8e8;height:100%;position:relative;overflow:hidden;transition:box-shadow var(--trans),transform var(--trans),border-color var(--trans)}
.service-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--rojo);transform:scaleX(0);transition:transform .3s ease;transform-origin:left}
.service-card:hover{box-shadow:var(--sombra-lg);transform:translateY(-5px);border-color:transparent}
.service-card:hover::before{transform:scaleX(1)}
.service-icon{width:52px;height:52px;background:rgba(198,40,40,.08);border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:1.2rem;transition:background var(--trans)}
.service-card:hover .service-icon{background:rgba(198,40,40,.15)}
.service-icon svg{width:26px;height:26px;fill:var(--rojo)}
.service-card h3{font-size:1.15rem;font-family:var(--ft);font-weight:700;margin-bottom:.5rem;letter-spacing:0}
.service-card p{font-size:.88rem;color:var(--gris-med);line-height:1.65;margin:0}

/* NOSOTROS */
.about-feature{display:flex;gap:1rem;align-items:flex-start;margin-bottom:1.5rem}
.about-feature-icon{width:42px;height:42px;flex-shrink:0;background:rgba(198,40,40,.09);border-radius:8px;display:flex;align-items:center;justify-content:center}
.about-feature-icon svg{width:20px;height:20px;fill:var(--rojo)}
.about-feature h5{font-size:.95rem;font-family:var(--ft);margin-bottom:.15rem;letter-spacing:0}
.about-feature p{font-size:.85rem;color:var(--gris-med);margin:0}
.about-placeholder{width:100%;height:400px;background:linear-gradient(135deg,#1a1a1a,#2d2d2d);border-radius:12px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:1rem}
.about-placeholder svg{width:80px;height:80px;opacity:.2;fill:var(--blanco)}
.about-badge{position:absolute;bottom:20px;right:20px;background:var(--rojo);color:var(--blanco);border-radius:10px;padding:1rem 1.4rem;text-align:center}
.about-badge .num{font-family:var(--ft);font-size:2.2rem;font-weight:900;line-height:1}
.about-badge .label{font-size:.75rem;opacity:.85}

/* CONTACTO */
.contact-form-wrap{background:var(--blanco);border-radius:12px;padding:2.5rem;box-shadow:var(--sombra)}
.form-label{font-weight:600;font-size:.8rem;color:var(--gris);margin-bottom:.3rem;text-transform:uppercase;letter-spacing:.5px}
.form-control,.form-select{border:1.5px solid #e0e0e0;border-radius:var(--radius);padding:.65rem 1rem;font-size:.93rem;transition:border-color var(--trans),box-shadow var(--trans);color:var(--gris)}
.form-control:focus,.form-select:focus{border-color:var(--rojo);box-shadow:0 0 0 3px rgba(198,40,40,.1);outline:none}
.form-control.is-invalid{border-color:var(--rojo);background-image:none}
.contact-info{padding-left:2rem}
@media(max-width:768px){.contact-info{padding-left:0;margin-top:2rem}}
.cii-item{display:flex;gap:1rem;align-items:flex-start;margin-bottom:1.8rem}
.cii-icon{width:44px;height:44px;flex-shrink:0;background:rgba(198,40,40,.09);border-radius:10px;display:flex;align-items:center;justify-content:center}
.cii-icon svg{width:20px;height:20px;fill:var(--rojo)}
.cii-text h5{font-size:.9rem;font-family:var(--ft);margin-bottom:.1rem;letter-spacing:0}
.cii-text p{font-size:.87rem;color:var(--gris-med);margin:0}
.alva-alert{display:none;border-radius:var(--radius);padding:.9rem 1.2rem;font-weight:600;font-size:.9rem;margin-top:1rem;align-items:center;gap:.6rem}
.alva-alert.show{display:flex}
.alva-alert.success{background:#e8f5e9;border:1.5px solid #66bb6a;color:#2e7d32}
.alva-alert.error{background:#ffebee;border:1.5px solid var(--rojo);color:var(--rojo-osc)}

/* PÁGINAS LEGALES */
.legal-hero{background:var(--negro);padding:80px 0 55px;position:relative;overflow:hidden}
.legal-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(198,40,40,.65) 0%,transparent 65%)}
.legal-hero .container{position:relative;z-index:1}
.legal-hero h1{font-family:var(--ft);font-size:clamp(2rem,4vw,3rem);font-weight:900;color:var(--blanco)}
.legal-hero p{color:rgba(255,255,255,.6);font-size:.95rem}
.legal-body{padding:70px 0;background:var(--blanco)}
.legal-body h2{font-size:1.3rem;color:var(--rojo);margin:2rem 0 .6rem;font-family:var(--ft);font-weight:700;letter-spacing:0}
.legal-body p,.legal-body li{font-size:.95rem;color:var(--gris);line-height:1.85}
.legal-body ul{padding-left:1.4rem;margin-bottom:1rem}
.legal-body li{margin-bottom:.4rem}

/* FOOTER */
#footer{background:var(--negro);color:rgba(255,255,255,.55);padding:65px 0 0}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:1rem}
.footer-brand img{height:42px;width:auto}
.footer-brand-name{font-family:var(--ft);font-size:1.3rem;font-weight:900;color:var(--blanco);letter-spacing:-1px;line-height:1}
.footer-brand-name span{color:var(--rojo)}
.footer-desc{font-size:.87rem;line-height:1.75;max-width:280px}
.footer-heading{font-family:var(--ft);font-size:.95rem;font-weight:700;color:var(--blanco);text-transform:uppercase;letter-spacing:1px;margin-bottom:1.2rem;padding-bottom:.4rem;border-bottom:2px solid var(--rojo);display:inline-block}
.footer-links{list-style:none;padding:0}
.footer-links li{margin-bottom:.5rem}
.footer-links a{color:rgba(255,255,255,.55);font-size:.87rem;transition:color var(--trans),padding-left var(--trans);display:inline-block}
.footer-links a:hover{color:var(--rojo-claro);padding-left:5px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.07);margin-top:3rem;padding:1.2rem 0;font-size:.78rem;color:rgba(255,255,255,.3)}

/* SPINNER */
.spin{display:inline-block;width:16px;height:16px;border:2.5px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spinr .7s linear infinite;vertical-align:middle;margin-right:5px}
@keyframes spinr{to{transform:rotate(360deg)}}

/* FADE IN */
.fade-up{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}

@media(max-width:768px){
  section{padding:60px 0}
  .hero-content{padding:75px 0 55px}
  .hero-cards{grid-template-columns:1fr;gap:.8rem;margin-top:2rem}
  .hero-stats{gap:1.5rem}
}