:root {
  --bg-azul-1: #0f5f9f;
  --bg-azul-2: #2f85c7;
  --bg-azul-3: #4da5e8;
  --bg-azul-4: #76c4ff;

  --azul-profundo: #0b2036;
  --azul-panel: rgba(9, 29, 49, 0.42);
  --azul-panel-soft: rgba(255, 255, 255, 0.08);
  --azul-borde: rgba(201, 234, 255, 0.42);
  --azul-borde-soft: rgba(255, 255, 255, 0.18);

  --texto-blanco: #ffffff;
  --texto-claro: rgba(255, 255, 255, 0.92);
  --texto-soft: rgba(255, 255, 255, 0.76);
  --texto-azul: #9eddff;

  --sombra-suave: 0 12px 30px rgba(4, 18, 31, 0.14);
  --sombra-media: 0 18px 45px rgba(4, 18, 31, 0.18);
  --sombra-fuerte: 0 26px 60px rgba(4, 18, 31, 0.22);

  --gradiente-body: linear-gradient(
    135deg,
    #165b96 0%,
    #2876b6 38%,
    #3b93d4 72%,
    #58ace9 100%
  );

  --gradiente-header: linear-gradient(
    135deg,
    rgba(8, 23, 39, 0.95) 0%,
    rgba(14, 36, 58, 0.88) 45%,
    rgba(30, 84, 130, 0.65) 100%
  );

  --gradiente-card: linear-gradient(
    135deg,
    rgba(13, 34, 56, 0.32) 0%,
    rgba(28, 90, 145, 0.18) 100%
  );

  --gradiente-boton: linear-gradient(
    135deg,
    #1990ff 0%,
    #2aa3ff 55%,
    #46b7ff 100%
  );

  --gradiente-boton-hover: linear-gradient(
    135deg,
    #1281e5 0%,
    #249af3 55%,
    #3db1ff 100%
  );

  --radio: 20px;
  --radio-lg: 28px;
  --transition: 0.35s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  color: var(--texto-blanco);
  background:
    radial-gradient(circle at 18% 18%, rgba(255, 255, 255, 0.10) 0%, transparent 18%),
    radial-gradient(circle at 82% 24%, rgba(255, 255, 255, 0.08) 0%, transparent 16%),
    radial-gradient(circle at 72% 78%, rgba(255, 255, 255, 0.06) 0%, transparent 18%),
    var(--gradiente-body);
  background-attachment: fixed;
}

.container {
  width: min(1150px, 92%);
  margin: 0 auto;
}

/* =========================
   HEADER
========================= */

.catalogo-header {
  position: relative;
  overflow: hidden;
  background: var(--gradiente-header);
  padding: 34px 0 72px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.catalogo-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 12% 22%, rgba(255, 255, 255, 0.10) 0%, transparent 18%),
    radial-gradient(circle at 88% 16%, rgba(147, 221, 255, 0.14) 0%, transparent 18%);
  pointer-events: none;
}

.header-top,
.hero {
  position: relative;
  z-index: 2;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 42px;
}

.brand h1 {
  font-size: 36px;
  letter-spacing: 1.8px;
  font-weight: 800;
  color: var(--texto-blanco);
}

.brand p {
  font-size: 14px;
  margin-top: 8px;
  letter-spacing: 0.4px;
  color: var(--texto-soft);
}

.btn-volver {
  text-decoration: none;
  color: var(--texto-blanco);
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 12px 18px;
  border-radius: 14px;
  font-weight: 700;
  backdrop-filter: blur(10px);
  transition: var(--transition);
  box-shadow: var(--sombra-suave);
}

.btn-volver:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.28);
}

.hero {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--azul-borde-soft);
  backdrop-filter: blur(12px);
  border-radius: var(--radio-lg);
  padding: 44px;
  box-shadow: var(--sombra-fuerte);
}

.tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.12);
  color: #dff5ff;
  padding: 9px 15px;
  border-radius: 999px;
  font-size: 13px;
  margin-bottom: 18px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  letter-spacing: 0.3px;
  font-weight: 700;
}

.hero-text h2 {
  font-size: 44px;
  line-height: 1.12;
  max-width: 780px;
  margin-bottom: 18px;
  font-weight: 800;
  color: var(--texto-blanco);
}

.hero-text p {
  max-width: 710px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--texto-claro);
}

/* =========================
   FILTROS
========================= */

.filtros-section {
  margin-top: -30px;
  position: relative;
  z-index: 5;
}

.filtros-box {
  background: rgba(10, 31, 52, 0.34);
  border: 1px solid var(--azul-borde-soft);
  border-radius: 24px;
  box-shadow: var(--sombra-media);
  backdrop-filter: blur(12px);
  padding: 24px;
}

.buscador {
  width: 100%;
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.96);
  border-radius: 14px;
  font-size: 15px;
  outline: none;
  margin-bottom: 16px;
  color: #1f3b58;
  transition: var(--transition);
}

.buscador::placeholder {
  color: #7b93a8;
}

.buscador:focus {
  border-color: rgba(73, 183, 255, 0.65);
  box-shadow: 0 0 0 4px rgba(105, 183, 255, 0.18);
}

.filtros-categorias {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filtro-btn {
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
  color: var(--texto-blanco);
  padding: 10px 16px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 700;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

.filtro-btn:hover,
.filtro-btn.active {
  background: var(--gradiente-boton);
  color: var(--texto-blanco);
  border-color: transparent;
  box-shadow: 0 10px 24px rgba(22, 129, 230, 0.26);
  transform: translateY(-1px);
}

/* =========================
   CATÁLOGO
========================= */

.catalogo-section {
  padding: 42px 0 80px;
}

.catalogo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.catalogo-card {
  position: relative;
  overflow: hidden;
  background: var(--gradiente-card);
  border: 1px solid var(--azul-borde);
  border-radius: var(--radio);
  padding: 26px;
  box-shadow: var(--sombra-suave);
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.catalogo-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, #7dd2ff 0%, #43afff 55%, #1e93ff 100%);
}

.catalogo-card::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -70px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.13) 0%, transparent 68%);
  pointer-events: none;
}

.catalogo-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--sombra-media);
  border-color: rgba(221, 243, 255, 0.56);
}

.card-top {
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.categoria {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  color: #d8f3ff;
  background: rgba(255, 255, 255, 0.09);
  padding: 8px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.catalogo-card h3 {
  font-size: 22px;
  line-height: 1.2;
  color: var(--texto-blanco);
  font-weight: 800;
}

.catalogo-card p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--texto-soft);
  margin-bottom: 22px;
  position: relative;
  z-index: 1;
}

.card-btn {
  display: inline-block;
  text-decoration: none;
  background: var(--gradiente-boton);
  color: var(--texto-blanco);
  padding: 12px 18px;
  border-radius: 13px;
  font-weight: 700;
  transition: var(--transition);
  box-shadow: 0 10px 22px rgba(22, 129, 230, 0.26);
  position: relative;
  z-index: 1;
}

.card-btn:hover {
  background: var(--gradiente-boton-hover);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(22, 129, 230, 0.32);
}

.mensaje-vacio {
  text-align: center;
  margin-top: 30px;
  color: var(--texto-claro);
  font-size: 16px;
}

/* =========================
   FOOTER
========================= */

.catalogo-footer {
  background: linear-gradient(
    135deg,
    rgba(8, 23, 39, 0.95) 0%,
    rgba(11, 35, 59, 0.92) 52%,
    rgba(24, 90, 145, 0.84) 100%
  );
  color: var(--texto-blanco);
  padding: 28px 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.catalogo-footer p + p {
  margin-top: 8px;
  opacity: 0.92;
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 992px) {
  .catalogo-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-text h2 {
    font-size: 36px;
  }
}

@media (max-width: 768px) {
  .header-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding: 30px;
  }

  .hero-text h2 {
    font-size: 30px;
  }
}

@media (max-width: 600px) {
  .catalogo-grid {
    grid-template-columns: 1fr;
  }

  .brand h1 {
    font-size: 28px;
  }

  .hero-text h2 {
    font-size: 26px;
  }

  .hero-text p {
    font-size: 15px;
  }

  .filtros-box {
    padding: 18px;
  }

  .catalogo-card {
    padding: 20px;
  }
}

/* =========================
   LOADER
========================= */

.loader-container {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 22px;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 18%),
    radial-gradient(circle at 80% 25%, rgba(255, 255, 255, 0.06) 0%, transparent 18%),
    linear-gradient(135deg, #0c2238 0%, #14548c 45%, #2f85c7 100%);
  opacity: 1;
  visibility: visible;
  transition: opacity 0.55s ease, visibility 0.55s ease;
}

.loader-container.hide {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-container .logo {
  width: 220px;
  max-width: 78vw;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.22));
}

.loader {
  display: grid;
  grid-template-columns: repeat(3, 18px);
  gap: 10px;
  justify-content: center;
  align-items: center;
}

.loader .cell {
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: linear-gradient(135deg, #d8f3ff 0%, #56b7ff 100%);
  box-shadow: 0 6px 14px rgba(27, 149, 240, 0.28);
  animation: loaderPulse 1.25s ease-in-out infinite;
}

.loader .d-0 { animation-delay: 0s; }
.loader .d-1 { animation-delay: 0.12s; }
.loader .d-2 { animation-delay: 0.24s; }
.loader .d-3 { animation-delay: 0.36s; }
.loader .d-4 { animation-delay: 0.48s; }

@keyframes loaderPulse {
  0%, 100% {
    transform: scale(0.85);
    opacity: 0.45;
  }
  50% {
    transform: scale(1.12);
    opacity: 1;
  }
}

/* para no cruzar estilos entre logos */
.header-top .brand .logo {
  width: 180px;
  max-width: 100%;
  height: auto;
}

@media (max-width: 600px) {
  .loader-container .logo {
    width: 170px;
  }

  .loader {
    grid-template-columns: repeat(3, 15px);
    gap: 8px;
  }

  .loader .cell {
    width: 15px;
    height: 15px;
  }
}


/* =========================
   FOOTER
========================= */

footer {
  width: 100%;
  height: 65vh;
  background-image: url("/assets/img/SVG/siteRecurso 27.svg");
  background-size: cover;
  position: relative;
  z-index: 5;
}

@media (max-width: 830px) {
  footer {
    height: auto;
    background-color: white;
    margin-top: 5vh;
  }
}

@media (max-width: 600px) {
  footer {
    z-index: 60;
  }
}

footer a {
  color: #000000;
  text-decoration: none;
}

@media (min-width: 1400px) {
  footer a {
    font-size: 24px;
  }
}

@media (max-width: 830px) {
  footer a {
    font-size: 12px;
  }
}

@media (max-width: 600px) {
  footer a {
    font-size: 18px;
  }
}

footer .container {
  width: 70%;
  margin: 0 15%;
  padding-top: 25vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

@media (max-width: 830px) {
  footer .container {
    grid-template-columns: 3fr 4fr;
    width: 95%;
    margin: 0 2.5%;
    padding: 30px 0;
  }
}

@media (max-width: 600px) {
  footer .container {
    grid-template-columns: 1fr;
  }
}

footer .img-container {
  display: flex;
  align-items: center;
  justify-content: center;
}

footer .img-container img {
  height: 70px;
}

@media (max-width: 830px) {
  footer .img-container img {
    height: 30px;
  }
}

@media (max-width: 600px) {
  footer .img-container img {
    height: 40px;
  }
}

footer .contact {
  color: #000000;
  width: auto;
  margin: 0;
}

@media (max-width: 600px) {
  footer .contact {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    text-align: center;
  }
}

footer .contact p {
  font-size: 20px;
  font-weight: 700;
}

@media (min-width: 1400px) {
  footer .contact p {
    font-size: 28px;
  }
}

@media (max-width: 830px) {
  footer .contact p {
    font-size: 16px;
  }
}

@media (max-width: 600px) {
  footer .contact p {
    font-size: 20px;
  }
}

footer .contact ul {
  margin-top: 10px;
  list-style: none;
}

@media (max-width: 830px) {
  footer .contact ul {
    margin-top: 5px;
  }
}

footer .contact ul li {
  padding: 10px 0;
}

@media (max-width: 830px) {
  footer .contact ul li {
    padding: 2px 0;
  }
}

@media (max-width: 600px) {
  footer .contact ul li {
    padding: 10px 0;
  }

  footer .contact ul li a {
    font-size: 18px;
    text-align: center;
  }
}