/* ========================================= */
/* === GASFITER EMPRESA · Estilos base    === */
/* ========================================= */
:root {
    /* Paleta corporativa: azul teal para transmitir confianza B2B */
    --color-primario: #0F1E2E;       /* Azul noche profundo */
    --color-secundario: #0D5C7D;     /* Azul teal corporativo */
    --color-acento: #FF7A26;         /* Naranja llamativo para CTA */
    --color-urgencia: #E63946;
    --color-whatsapp: #25D366;
    --color-boton-gris: #2C3E50;

    --bg-body: #FFFFFF;
    --bg-nosotros: #F4F7FA;
    --bg-gris-claro: #F4F7FA;
    --texto-oscuro: #1F2937;
    --texto-claro: #FFFFFF;
    --ancho-maximo: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Arial', sans-serif;
    margin: 0; padding: 0;
    background-color: var(--bg-body);
    color: var(--texto-oscuro);
    line-height: 1.6;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; padding: 0; margin: 0; }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: var(--ancho-maximo); margin: 0 auto; padding: 0 20px; }
h1, h2, h3, h4 { margin-top: 0; color: var(--color-primario); }
.titulo-centrado { text-align: center; text-transform: uppercase; font-size: 32px; margin-bottom: 20px; font-weight: 800; }
.subtitulo-linea { width: 60px; height: 3px; background-color: var(--color-acento); margin: 0 auto 30px; }

/* HEADER */
.header {
    background-color: #FFFFFF;
    padding: 15px 0;
    position: sticky; top: 0; z-index: 1000;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    border-bottom: 1px solid #E5E9EE;
}
.header-inner { display: flex; justify-content: center; align-items: center; }
.logo img { height: 50px; }
.logo-texto {
    font-size: 24px; font-weight: 900; letter-spacing: 1px;
    color: var(--color-primario);
}
.logo-texto span { color: var(--color-acento); }

/* HERO */
.hero {
    min-height: 540px;
    display: flex; align-items: center; justify-content: center;
    text-align: center; position: relative;
    background: #FFFFFF;
    padding: 90px 20px 70px;
    overflow: hidden;
    border-bottom: 1px solid #E5E9EE;
}
.hero-content { position: relative; z-index: 2; max-width: 820px; }
.hero-eyebrow {
    display: inline-flex; align-items: center; gap: 10px;
    color: var(--color-secundario); font-weight: 700; font-size: 13px;
    letter-spacing: 2px; text-transform: uppercase;
    margin-bottom: 28px;
    background: rgba(13, 92, 125, 0.08);
    padding: 8px 18px; border-radius: 50px;
}
.hero-eyebrow i { color: var(--color-acento); }

.hero-content h1 {
    font-size: 54px; line-height: 1.05;
    margin-bottom: 22px; color: #0F1E2E;
    font-weight: 900; letter-spacing: -1.5px;
}
.hero-content h1 .resalte { color: var(--color-acento); }
.hero-content p.hero-sub {
    font-size: 20px; font-weight: 400; color: #52606D;
    margin: 0 auto 40px; max-width: 620px; line-height: 1.5;
}
.hero-content p.hero-sub strong { font-weight: 700; color: #0F1E2E; }

.btn-wsp-hero {
    display: inline-flex; align-items: center; justify-content: center; gap: 14px;
    background-color: var(--color-acento); color: #fff;
    font-size: 23px; font-weight: 800;
    padding: 22px 52px; border-radius: 60px;
    box-shadow: 0 12px 30px rgba(255, 122, 38, 0.4);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    animation: pulso 2s infinite;
}
.btn-wsp-hero i { font-size: 28px; }
.btn-wsp-hero:hover {
    transform: translateY(-2px);
    background-color: #EA6A16;
    color: #fff;
    box-shadow: 0 16px 40px rgba(255, 122, 38, 0.5);
}
@keyframes pulso {
    0%   { box-shadow: 0 12px 30px rgba(255,122,38,0.4), 0 0 0 0 rgba(255,122,38,0.5); }
    70%  { box-shadow: 0 12px 30px rgba(255,122,38,0.4), 0 0 0 20px rgba(255,122,38,0); }
    100% { box-shadow: 0 12px 30px rgba(255,122,38,0.4), 0 0 0 0 rgba(255,122,38,0); }
}
@media (prefers-reduced-motion: reduce) {
    .btn-wsp-hero { animation: none; }
}
.hero-llamada { display: block; margin-top: 20px; color: #77828C; font-size: 15px; }
.hero-llamada a { color: #0F1E2E; font-weight: 700; text-decoration: underline; }
.hero-llamada a:hover { color: var(--color-acento); }
.hero-confianza {
    margin-top: 40px; padding-top: 28px;
    border-top: 1px solid #E5E9EE; color: #52606D; font-size: 14px;
    display: flex; justify-content: center; flex-wrap: wrap; gap: 8px 32px;
}
.hero-confianza span i { color: var(--color-acento); margin-right: 8px; }

/* BREADCRUMB */
.breadcrumb {
    padding: 18px 20px;
    font-size: 14px; color: #77828C;
    border-bottom: 1px solid #E5E9EE;
    background: #FAFBFC;
}
.breadcrumb a { color: var(--color-secundario); font-weight: 600; }
.breadcrumb a:hover { color: var(--color-acento); }
.breadcrumb .sep { margin: 0 8px; color: #C4CDD5; }
.breadcrumb .current { color: #333; font-weight: 600; }

/* SERVICIOS PRINCIPALES (3 tarjetas grandes) */
.servicios-principales { padding: 80px 20px; background: #FFFFFF; }
.servicios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}
.servicio-card {
    background: #FFFFFF;
    border: 1px solid #E5E9EE;
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    display: block;
    color: inherit;
}
.servicio-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 40px rgba(15, 30, 46, 0.12);
    border-color: var(--color-acento);
}
.servicio-card-icon {
    width: 90px; height: 90px;
    background: linear-gradient(135deg, var(--color-secundario) 0%, #0A4A66 100%);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 24px;
    color: #fff; font-size: 40px;
    transition: background 0.3s;
}
.servicio-card:hover .servicio-card-icon {
    background: linear-gradient(135deg, var(--color-acento) 0%, #EA6A16 100%);
}
.servicio-card h3 {
    font-size: 22px; font-weight: 800;
    margin-bottom: 12px;
    color: var(--color-primario);
}
.servicio-card p { font-size: 15px; color: #52606D; margin-bottom: 20px; }
.servicio-card .link-mas {
    display: inline-block;
    color: var(--color-acento);
    font-weight: 700;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.servicio-card .link-mas i { margin-left: 6px; transition: transform 0.2s; }
.servicio-card:hover .link-mas i { transform: translateX(4px); }

/* SECTORES QUE ATENDEMOS */
.sectores-section {
    background: var(--bg-nosotros);
    padding: 70px 20px;
    text-align: center;
}
.sectores-grid {
    display: flex; justify-content: center; flex-wrap: wrap;
    gap: 40px; max-width: 1100px; margin: 40px auto 0;
}
.sector-item {
    display: flex; flex-direction: column; align-items: center;
    max-width: 140px;
}
.sector-item i {
    font-size: 40px; color: var(--color-secundario);
    margin-bottom: 12px;
}
.sector-item p {
    font-size: 14px; font-weight: 600;
    color: var(--color-primario); margin: 0;
    line-height: 1.3;
}

/* POR QUE ELEGIRNOS */
.porque-section { padding: 80px 20px; background: #FFFFFF; }
.porque-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 40px auto 0;
}
.porque-item {
    text-align: center;
    padding: 25px 20px;
}
.porque-item .porque-icono {
    width: 70px; height: 70px;
    background: rgba(255, 122, 38, 0.12);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 18px;
    color: var(--color-acento);
    font-size: 30px;
}
.porque-item h4 {
    font-size: 17px; font-weight: 800;
    color: var(--color-primario); margin-bottom: 8px;
}
.porque-item p { font-size: 14px; color: #52606D; margin: 0; }

/* CONTENIDO DE PAGINAS DE SERVICIO */
.service-content { padding: 60px 20px; max-width: 900px; }
.service-content h2 {
    font-size: 28px; font-weight: 800;
    margin-top: 50px; margin-bottom: 16px;
    color: var(--color-primario);
    border-left: 4px solid var(--color-acento);
    padding-left: 15px;
}
.service-content h2:first-of-type { margin-top: 0; }
.service-content h3 {
    font-size: 20px; font-weight: 700;
    margin-top: 30px; margin-bottom: 10px;
    color: var(--color-secundario);
}
.service-content p { font-size: 16px; margin: 0 0 16px; color: #374151; }
.service-content strong { color: var(--color-primario); }
.service-content ul.lista-chequeo { margin: 16px 0 20px; }
.service-content ul.lista-chequeo li {
    padding: 8px 0 8px 32px;
    position: relative;
    font-size: 16px;
    color: #374151;
}
.service-content ul.lista-chequeo li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--color-acento);
    position: absolute;
    left: 0; top: 8px;
    background: rgba(255, 122, 38, 0.12);
    width: 22px; height: 22px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px;
}
.service-content ul.lista-alerta li::before {
    content: '\f071';
    color: var(--color-urgencia);
    background: rgba(230, 57, 70, 0.12);
}

.faq-item {
    background: #F4F7FA;
    border-left: 3px solid var(--color-secundario);
    padding: 18px 22px;
    margin-bottom: 14px;
    border-radius: 4px;
}
.faq-item h3 { margin: 0 0 8px; font-size: 17px; color: var(--color-primario); }
.faq-item p { margin: 0; font-size: 15px; color: #52606D; }

.cta-inline {
    text-align: center;
    background: linear-gradient(135deg, #FFF7F0 0%, #FFECDD 100%);
    border-radius: 12px;
    padding: 36px 24px;
    margin: 40px 0;
}
.cta-inline p { font-size: 18px; margin-bottom: 22px; color: #0F1E2E; font-weight: 600; }
.cta-inline .btn-wsp-hero { font-size: 19px; padding: 17px 38px; }

/* ACERCA DE */
.about-section { background-color: var(--bg-nosotros); padding: 80px 20px; text-align: center; }
.about-text { max-width: 800px; margin: 0 auto; color: #374151; font-size: 16px; }
.about-text p { margin-bottom: 20px; }

/* CTA GRANDE OSCURO */
.cta-oscuro {
    background: linear-gradient(135deg, #0F1E2E 0%, #0A4A66 100%);
    padding: 90px 20px;
    text-align: center; color: #fff;
}
.cta-oscuro h2 {
    color: #fff; font-size: 34px; font-weight: 900;
    margin-bottom: 16px;
}
.cta-oscuro p { font-size: 18px; color: #C8D3DE; margin-bottom: 30px; max-width: 620px; margin-left: auto; margin-right: auto; }

/* FOOTER */
.footer { background-color: #0A1119; color: #A0AEC0; padding: 60px 20px 20px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 40px; max-width: 1200px; margin-left: auto; margin-right: auto; }
.footer h4 { color: white; margin-bottom: 20px; font-size: 16px; text-transform: uppercase; }
.footer ul li { margin-bottom: 10px; }
.footer ul li i { margin-right: 10px; width: 20px; text-align: center; color: var(--color-acento); }
.footer a:hover { color: var(--color-acento); }
.footer-bottom { border-top: 1px solid #2A3441; padding-top: 20px; text-align: center; }

/* WSP FLOTANTE */
.wsp-flotante {
    position: fixed; bottom: 20px; right: 20px;
    background: #25D366; color: white;
    width: 60px; height: 60px; border-radius: 50%;
    display: flex; justify-content: center; align-items: center;
    font-size: 35px; box-shadow: 2px 2px 10px rgba(0,0,0,0.2); z-index: 9999;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .header-inner { flex-direction: column; gap: 15px; }
    .hero { min-height: 460px; padding: 55px 20px; }
    .hero-content h1 { font-size: 34px; letter-spacing: -0.5px; }
    .hero-content p.hero-sub { font-size: 17px; }
    .btn-wsp-hero { font-size: 19px; padding: 18px 30px; width: 100%; max-width: 340px; }
    .hero-confianza { gap: 8px 20px; font-size: 13px; }
    .service-content { padding: 40px 20px; }
    .service-content h2 { font-size: 22px; }
    .cta-oscuro h2 { font-size: 26px; }
    .servicios-principales, .porque-section, .sectores-section { padding: 55px 20px; }
    .sectores-grid { gap: 25px; }
}