/* ===== Variables de marca ===== */
:root {
  --azul: #0f3d63;
  --azul-oscuro: #0a2c48;
  --naranja: #e8541e;
  --naranja-claro: #ff7a3d;
  --gris-claro: #f4f6f8;
  --gris-medio: #6b7785;
  --blanco: #ffffff;
  --texto: #1c2b3a;
  --radio: 10px;
  --sombra: 0 4px 18px rgba(15, 61, 99, 0.12);
  --fuente-titulos: 'Poppins', 'Segoe UI', sans-serif;
  --fuente-texto: 'Inter', 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; min-width: 0; }

html { scroll-behavior: smooth; }

html, body { overflow-x: hidden; width: 100%; }

body {
  font-family: var(--fuente-texto);
  color: var(--texto);
  background: var(--blanco);
  line-height: 1.6;
}

img { max-width: 100%; display: block; }

a { text-decoration: none; color: inherit; }

ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--fuente-titulos);
  color: var(--azul-oscuro);
  line-height: 1.25;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

.seccion { padding: 70px 0; }
.seccion--gris { background: var(--gris-claro); }

.eyebrow {
  display: inline-block;
  color: var(--naranja);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 10px;
}

.titulo-seccion {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  margin-bottom: 14px;
}

.subtitulo-seccion {
  color: var(--gris-medio);
  max-width: 640px;
  margin-bottom: 40px;
  font-size: 1.05rem;
}

/* ===== Botones ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }

.btn--naranja {
  background: linear-gradient(135deg, var(--naranja), var(--naranja-claro));
  color: var(--blanco);
  box-shadow: 0 8px 20px rgba(232, 84, 30, 0.3);
}

.btn--azul {
  background: var(--azul);
  color: var(--blanco);
  box-shadow: 0 8px 20px rgba(15, 61, 99, 0.25);
}

.btn--outline {
  background: transparent;
  border-color: var(--blanco);
  color: var(--blanco);
}
.btn--outline:hover { background: rgba(255,255,255,0.12); }

.btn--outline-azul {
  background: transparent;
  border-color: var(--azul);
  color: var(--azul);
}
.btn--outline-azul:hover { background: rgba(15, 61, 99, 0.06); }

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(6px);
  box-shadow: 0 2px 14px rgba(15, 61, 99, 0.08);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
}

.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--fuente-titulos);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--azul-oscuro);
}

.marca img { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; }

.marca span small {
  display: block;
  font-weight: 500;
  font-size: 0.68rem;
  color: var(--gris-medio);
  letter-spacing: 0.03em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav__lista {
  display: flex;
  gap: 26px;
}

.nav__lista a {
  font-weight: 600;
  font-size: 0.94rem;
  color: var(--texto);
  position: relative;
  padding: 6px 0;
}

.nav__lista a.activo,
.nav__lista a:hover { color: var(--naranja); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav__toggle span {
  width: 26px;
  height: 3px;
  background: var(--azul-oscuro);
  border-radius: 2px;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(120deg, var(--azul-oscuro), var(--azul) 60%, #164a75);
  color: var(--blanco);
  position: relative;
  overflow: hidden;
}

.hero__inner {
  padding: 90px 0 100px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero h1 {
  color: var(--blanco);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 18px;
}

.hero h1 span { color: var(--naranja-claro); }

.hero p {
  color: rgba(255,255,255,0.85);
  font-size: 1.08rem;
  max-width: 520px;
  margin-bottom: 30px;
}

.hero__acciones { display: flex; gap: 16px; flex-wrap: wrap; }

.hero__badge {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radio);
  padding: 26px;
  backdrop-filter: blur(4px);
}

.hero__badge img { border-radius: 50%; width: 90px; height: 90px; object-fit: cover; margin: 0 auto 14px; }
.hero__badge p { color: rgba(255,255,255,0.85); font-size: 0.92rem; text-align: center; margin: 0; }
.hero__badge strong { display: block; text-align: center; color: var(--blanco); font-size: 1.05rem; margin-bottom: 4px; }

/* ===== Franja combustibles ===== */
.franja {
  background: var(--blanco);
  border-bottom: 1px solid #e8edf2;
}
.franja__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
  padding: 26px 0;
  gap: 20px;
}
.franja__item strong { display: block; color: var(--azul-oscuro); font-size: 1.4rem; }
.franja__item span { color: var(--gris-medio); font-size: 0.88rem; }

/* ===== Tarjetas genéricas ===== */
.grid {
  display: grid;
  gap: 26px;
}
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.tarjeta {
  background: var(--blanco);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
  padding: 30px 26px;
  border: 1px solid #eef1f5;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.tarjeta:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(15, 61, 99, 0.16);
}

.tarjeta__icono {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--azul), var(--naranja));
  color: var(--blanco);
  font-size: 1.5rem;
  margin-bottom: 18px;
}

.tarjeta h3 { font-size: 1.15rem; margin-bottom: 10px; }
.tarjeta p { color: var(--gris-medio); font-size: 0.95rem; }

.tarjeta ul { margin-top: 14px; }
.tarjeta ul li {
  font-size: 0.9rem;
  color: var(--texto);
  padding-left: 22px;
  position: relative;
  margin-bottom: 8px;
}
.tarjeta ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--naranja);
  font-weight: 700;
}

/* ===== Producto ===== */
.producto {
  background: var(--blanco);
  border-radius: var(--radio);
  overflow: hidden;
  box-shadow: var(--sombra);
  border: 1px solid #eef1f5;
}
.producto__img {
  height: 170px;
  background: linear-gradient(135deg, var(--azul), var(--azul-oscuro));
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.85);
  font-size: 2.4rem;
}
.producto__cuerpo { padding: 22px; }
.producto__cuerpo span.tag {
  display: inline-block;
  background: rgba(232, 84, 30, 0.1);
  color: var(--naranja);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 50px;
  margin-bottom: 10px;
}
.producto__cuerpo h3 { font-size: 1.05rem; margin-bottom: 8px; }
.producto__cuerpo p { color: var(--gris-medio); font-size: 0.88rem; }

/* ===== Galería de proyectos ===== */
.proyecto {
  position: relative;
  border-radius: var(--radio);
  overflow: hidden;
  height: 240px;
  background: linear-gradient(135deg, var(--azul-oscuro), var(--azul));
  display: flex;
  align-items: flex-end;
  box-shadow: var(--sombra);
}
.proyecto__overlay {
  background: linear-gradient(0deg, rgba(10,44,72,0.92), transparent 70%);
  width: 100%;
  padding: 20px;
  color: var(--blanco);
}
.proyecto__overlay span.tag {
  background: rgba(255,122,61,0.9);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  display: inline-block;
  margin-bottom: 6px;
}
.proyecto__overlay h4 { color: var(--blanco); font-size: 1rem; margin-bottom: 2px; }
.proyecto__overlay p { font-size: 0.82rem; color: rgba(255,255,255,0.75); margin: 0; }

/* ===== CTA franja ===== */
.cta {
  background: linear-gradient(120deg, var(--naranja), var(--naranja-claro));
  color: var(--blanco);
  text-align: center;
  padding: 60px 0;
}
.cta h2 { color: var(--blanco); margin-bottom: 12px; }
.cta p { color: rgba(255,255,255,0.9); margin-bottom: 26px; }
.cta__acciones { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== Nosotros: valores / stats ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.stats div { text-align: center; }
.stats strong { display: block; font-size: 2rem; color: var(--naranja); font-family: var(--fuente-titulos); }
.stats span { color: var(--gris-medio); font-size: 0.88rem; }

.linea-tiempo { margin-top: 10px; }
.linea-tiempo li {
  padding: 16px 0 16px 26px;
  border-left: 3px solid #e8edf2;
  position: relative;
}
.linea-tiempo li::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 22px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--naranja);
}
.linea-tiempo strong { color: var(--azul-oscuro); display: block; }
.linea-tiempo span { color: var(--gris-medio); font-size: 0.9rem; }

/* ===== Contacto ===== */
.contacto__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.info-contacto li {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
  align-items: flex-start;
}
.info-contacto .icono {
  width: 42px;
  height: 42px;
  min-width: 42px;
  border-radius: 10px;
  background: rgba(15, 61, 99, 0.08);
  color: var(--azul);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.info-contacto strong { display: block; color: var(--azul-oscuro); }
.info-contacto span { color: var(--gris-medio); font-size: 0.92rem; }

.mapa-placeholder {
  margin-top: 26px;
  border-radius: var(--radio);
  overflow: hidden;
  border: 1px solid #e8edf2;
  height: 220px;
}
.mapa-placeholder iframe { width: 100%; height: 100%; border: 0; }

.formulario {
  background: var(--gris-claro);
  border-radius: var(--radio);
  padding: 30px;
  border: 1px solid #e8edf2;
}
.campo { margin-bottom: 18px; }
.campo label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--azul-oscuro);
}
.campo input,
.campo select,
.campo textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid #d7dee5;
  font-family: var(--fuente-texto);
  font-size: 0.95rem;
  background: var(--blanco);
}
.campo input:focus,
.campo select:focus,
.campo textarea:focus {
  outline: none;
  border-color: var(--naranja);
}
.campo-fila { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-mensaje {
  margin-top: 14px;
  font-size: 0.88rem;
  display: none;
}
.form-mensaje.visible { display: block; }
.form-mensaje.ok { color: #1b7a43; }
.form-mensaje.error { color: #c0392b; }

/* ===== Footer ===== */
.footer {
  background: var(--azul-oscuro);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 26px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 34px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer h4 { color: var(--blanco); font-size: 1rem; margin-bottom: 16px; }
.footer .marca { color: var(--blanco); margin-bottom: 14px; }
.footer p.desc { font-size: 0.9rem; color: rgba(255,255,255,0.65); }
.footer ul li { margin-bottom: 10px; font-size: 0.9rem; }
.footer ul li a:hover { color: var(--naranja-claro); }
.footer__bottom {
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  flex-wrap: wrap;
  gap: 10px;
}
.footer__redes { display: flex; gap: 12px; }
.footer__redes a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer__redes a:hover { background: var(--naranja); }

/* ===== WhatsApp flotante ===== */
.whatsapp-flotante {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 22px rgba(37, 211, 102, 0.45);
  z-index: 200;
  font-size: 1.7rem;
  color: var(--blanco);
  animation: pulso 2.4s infinite;
}
.whatsapp-flotante:hover { transform: scale(1.06); }

@keyframes pulso {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
  70% { box-shadow: 0 0 0 14px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ===== Banner de página interna ===== */
.banner-pagina {
  background: linear-gradient(120deg, var(--azul-oscuro), var(--azul));
  color: var(--blanco);
  padding: 60px 0;
  text-align: center;
}
.banner-pagina h1 { color: var(--blanco); margin-bottom: 10px; }
.banner-pagina p { color: rgba(255,255,255,0.8); }
.migas {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-top: 10px;
}
.migas a { color: rgba(255,255,255,0.85); }

/* ===== Aviso placeholder ===== */
.aviso-placeholder {
  background: #fff4e5;
  border: 1px dashed var(--naranja);
  color: #9a5217;
  padding: 14px 18px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 30px;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__badge { max-width: 320px; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .contacto__layout { grid-template-columns: 1fr; }
  .franja__grid { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .nav__lista {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--blanco);
    flex-direction: column;
    padding: 18px 20px;
    gap: 16px;
    box-shadow: 0 12px 20px rgba(15,61,99,0.1);
    display: none;
  }
  .nav__lista.abierto { display: flex; }
  .nav__toggle { display: flex; }
  .nav__acciones { display: none; }
  .grid--3, .grid--4, .grid--2 { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .campo-fila { grid-template-columns: 1fr; }
}