/* ==========================================================================
   Quimex USA · Distribuidora de químicos industriales, Miami FL
   Tema: industrial trust-first. Neutros fríos + acento ámbar de seguridad.
   ========================================================================== */

:root {
  --bg: #e7eff7;
  --surface: #f4f8fc;
  --surface-alt: #dbe7f2;
  --tint-a: #dce9f4;
  --tint-b: #ecf3fa;
  --ink: #101a26;
  --ink-soft: #455261;
  --ink-faint: #6b7686;
  --line: #c7d6e5;
  --brand-navy: #123f75;
  --brand-red: #d21f28;
  --navy: #0e2545;
  --navy-soft: #16345c;
  --accent: #d21f28;
  --accent-ink: #ffffff;
  --accent-soft: rgba(210, 31, 40, 0.10);
  --logo-ink: #123f75;
  --radius: 14px;
  --shadow: 0 12px 32px rgba(14, 26, 43, 0.10);
  --font-sans: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1420;
    --surface: #121e2e;
    --surface-alt: #16243a;
    --tint-a: #101c2d;
    --tint-b: #15243a;
    --ink: #eef2f7;
    --ink-soft: #aeb9c7;
    --ink-faint: #8593a4;
    --line: #223349;
    --navy: #08182c;
    --navy-soft: #102943;
    --accent: #f2434c;
    --accent-ink: #2a0407;
    --accent-soft: rgba(242, 67, 76, 0.14);
    --logo-ink: #8fb8e2;
    --shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  }
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* height:auto evita que el atributo height del HTML anule la proporción del CSS. */
img { max-width: 100%; height: auto; display: block; }

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; }

h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 700; }

h3 { font-size: 1.06rem; font-weight: 600; }

a { color: inherit; }

/* ---------- Utilidades ---------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-head {
  max-width: 640px;
  margin: 0 auto 3rem;
  padding: 0 1.25rem;
  text-align: center;
}

.section-head p { margin-top: 0.75rem; color: var(--ink-soft); }

.btn {
  display: inline-block;
  padding: 0.85rem 1.7rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn--primary:hover {
  box-shadow: 0 8px 20px rgba(232, 147, 12, 0.35);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn--ghost:hover { border-color: var(--ink-faint); transform: translateY(-1px); }

.btn--full { width: 100%; font-size: 1rem; }

/* ---------- Navegación ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 68px;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
}

/* ---------- Logo ---------- */

.logo-mark {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  color: var(--logo-ink);
  /* El halo de la flecha toma el color del fondo donde se coloca el logo. */
  --logo-halo: var(--bg);
}

.logo-mark--lg { width: 54px; height: 54px; }

.logo-word {
  display: grid;
  gap: 0.1rem;
  line-height: 1.05;
}

.logo-word__name {
  font-size: 1.24rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--brand-navy);
}

.logo-word__name strong {
  font-weight: 800;
  color: var(--brand-red);
}

.logo-word__tag {
  font-size: 0.53rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--brand-navy);
  white-space: nowrap;
}

@media (prefers-color-scheme: dark) {
  .logo-word__name { color: #dbe8f6; }
  .logo-word__name strong { color: #f2434c; }
  .logo-word__tag { color: #92a8c1; }
}

.nav__links {
  display: flex;
  gap: 1.6rem;
  margin-left: auto;
}

.nav__links a {
  text-decoration: none;
  font-size: 0.93rem;
  color: var(--ink-soft);
  transition: color 0.15s ease;
}

.nav__links a:hover { color: var(--ink); }

.lang-toggle {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.lang-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav__toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ---------- Hero ---------- */

.hero { overflow: hidden; }

.hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4.5rem 1.25rem 5rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero__copy h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.3rem);
  font-weight: 800;
}

.hero__sub {
  margin-top: 1.25rem;
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 32rem;
}

.hero__actions {
  margin-top: 2rem;
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.hero__media {
  position: relative;
}

.hero__media img {
  border-radius: var(--radius);
  aspect-ratio: 5 / 6;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.hero__badge {
  position: absolute;
  left: -1.25rem;
  bottom: 1.5rem;
  background: var(--navy);
  color: #f2f5f9;
  border-radius: var(--radius);
  padding: 0.9rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  max-width: 240px;
  font-size: 0.85rem;
  line-height: 1.35;
  box-shadow: var(--shadow);
}

.hero__badge-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

/* ---------- Certificaciones ---------- */

.certs {
  background: var(--navy);
  color: #c9d3df;
  padding: 1.4rem 1.25rem;
}

.certs__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.certs__title {
  font-weight: 600;
  color: #f2f5f9;
  font-size: 0.9rem;
  white-space: nowrap;
}

.certs__list {
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

/* El año de fundación encabeza la lista y va resaltado. */
.certs__since {
  color: #ffffff;
  font-weight: 500;
  padding: 0.15rem 0.7rem;
  margin: -0.15rem 0;
  border-radius: 999px;
  background: rgba(210, 31, 40, 0.24);
  border: 1px solid rgba(242, 67, 76, 0.45);
}

/* ---------- Productos ---------- */

.products {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5.5rem 1.25rem;
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(180px, auto);
  gap: 1.25rem;
}

.product-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.product-card--tall { grid-row: span 2; }

.product-card--tall img {
  flex: 1;
  object-fit: cover;
  min-height: 200px;
}

.product-card--accent {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
}

.product-card__body { padding: 1.4rem; }

.product-card__body p {
  margin-top: 0.5rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

/* ---------- Gases y cilindros ---------- */

.gases {
  background:
    radial-gradient(52% 60% at 18% 22%, rgba(76, 149, 220, 0.28), transparent 70%),
    radial-gradient(48% 55% at 85% 80%, rgba(41, 98, 165, 0.35), transparent 72%),
    linear-gradient(160deg, #0d2036 0%, #133655 48%, #0e2842 100%);
  color: #e9f1f9;
  overflow: hidden;
}

.gases__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5.5rem 1.25rem;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
  align-items: center;
}

.gases__media {
  position: relative;
}

.gases__media::before {
  content: "";
  position: absolute;
  inset: 8% -6%;
  background: radial-gradient(50% 50% at 50% 50%, rgba(120, 180, 235, 0.35), transparent 70%);
  filter: blur(10px);
  z-index: 0;
}

.gases__media img {
  position: relative;
  z-index: 1;
  border-radius: var(--radius);
  aspect-ratio: 6 / 7;
  object-fit: cover;
  width: 100%;
  border: 1px solid rgba(160, 200, 240, 0.28);
  box-shadow: 0 24px 60px rgba(4, 14, 28, 0.55);
}

/* Velo azulado: funde el borde inferior de la foto con el fondo de la sección. */
.gases__media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: var(--radius);
  pointer-events: none;
  background:
    linear-gradient(180deg, transparent 52%, rgba(13, 32, 54, 0.62) 100%),
    linear-gradient(115deg, rgba(90, 160, 225, 0.16), transparent 46%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.gases__copy h2 { color: #f4f8fc; }

.gases__copy > p {
  margin-top: 1rem;
  color: #b9cde0;
  max-width: 34rem;
}

.gases__list {
  list-style: none;
  margin-top: 2rem;
  display: grid;
  gap: 1rem;
}

.gases__list li {
  background: rgba(20, 48, 76, 0.55);
  border: 1px solid rgba(130, 175, 220, 0.22);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
  display: grid;
  gap: 0.2rem;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.gases__list strong { color: #f4f8fc; }

.gases__list span {
  font-size: 0.92rem;
  color: #a9c1d8;
}

/* ---------- Nosotros ---------- */

.about {
  background: linear-gradient(180deg, var(--tint-a), var(--tint-b));
  border-block: 1px solid var(--line);
}

.about__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5.5rem 1.25rem;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
  align-items: center;
}

.about__media img {
  border-radius: var(--radius);
  aspect-ratio: 10 / 9;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.about__copy p { margin-top: 1rem; color: var(--ink-soft); }

.about__points {
  list-style: none;
  margin: 1.5rem 0 2rem;
  display: grid;
  gap: 0.85rem;
}

.about__points li {
  padding-left: 1.6rem;
  position: relative;
  color: var(--ink-soft);
}

.about__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 3px;
  background: var(--accent);
}

.about__points strong { color: var(--ink); }

/* ---------- Equipo ---------- */

.team {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5.5rem 1.25rem;
}

.team__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.team__item {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
}

.team__item img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
  width: 100%;
  transition: transform 0.35s ease;
}

.team__item:hover img { transform: scale(1.03); }

.team__item figcaption {
  padding: 1.1rem 1.3rem 1.3rem;
  display: grid;
  gap: 0.2rem;
}

.team__item figcaption span {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

/* ---------- Testimonio ---------- */

.quote {
  background: var(--navy);
  color: #eef2f7;
  padding: 4.5rem 1.25rem;
}

.quote blockquote {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}

.quote p {
  font-size: clamp(1.2rem, 2.6vw, 1.6rem);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: -0.01em;
}

.quote footer {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: #97a4b4;
}

/* ---------- Cobertura ---------- */

.coverage {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5.5rem 1.25rem;
}

.coverage__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.coverage__copy > p { margin-top: 0.75rem; color: var(--ink-soft); }

.coverage__zones {
  margin-top: 2rem;
  display: grid;
  gap: 1.5rem;
}

.coverage__zones > div {
  border-left: 3px solid var(--accent);
  padding-left: 1.1rem;
}

.coverage__zones p {
  margin-top: 0.25rem;
  font-size: 0.93rem;
  color: var(--ink-soft);
}

.coverage__map iframe {
  width: 100%;
  height: 100%;
  min-height: 420px;
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---------- Contacto ---------- */

.contact {
  background: linear-gradient(180deg, var(--tint-b), var(--tint-a));
  border-top: 1px solid var(--line);
}

.contact__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5.5rem 1.25rem;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
  align-items: start;
}

.contact__info > p { margin-top: 0.9rem; color: var(--ink-soft); max-width: 30rem; }

.contact__details {
  font-style: normal;
  margin-top: 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.6rem;
}

.contact__details h3 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
  margin-bottom: 0.35rem;
}

.contact__details p { font-size: 0.95rem; }

.contact__details a { color: var(--ink); text-decoration: none; }
.contact__details a:hover { color: var(--accent); }

.contact__social {
  margin-top: 2.25rem;
  display: flex;
  gap: 0.8rem;
}

.contact__social a,
.contact__social span {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--ink-soft);
  transition: color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.contact__social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* Iconos de redes sin enlace: visibles pero atenuados y no interactivos. */
.contact__social-off {
  opacity: 0.42;
  cursor: default;
  pointer-events: none;
}

/* ---------- Formulario ---------- */

.contact__form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
  display: grid;
  gap: 1.2rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.form-field { display: grid; gap: 0.4rem; }

.form-field label {
  font-size: 0.88rem;
  font-weight: 600;
}

.form-optional { font-weight: 400; color: var(--ink-faint); }

.form-field input,
.form-field select,
.form-field textarea {
  font: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.7rem 0.9rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-field textarea { resize: vertical; }

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-field input[aria-invalid="true"],
.form-field textarea[aria-invalid="true"] {
  border-color: #c4392e;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.form-error {
  font-size: 0.8rem;
  color: #c4392e;
  min-height: 0;
}

.form-error:empty { display: none; }

.form-status {
  text-align: center;
  font-size: 0.92rem;
  font-weight: 500;
}

.form-status:empty { display: none; }

.form-status--ok { color: #1d7a46; }
.form-status--error { color: #c4392e; }

@media (prefers-color-scheme: dark) {
  .form-status--ok { color: #4ecb84; }
  .form-error, .form-status--error { color: #ff7a6e; }
  .form-field input[aria-invalid="true"],
  .form-field textarea[aria-invalid="true"] { border-color: #ff7a6e; }
}

/* ---------- Footer ---------- */

.footer {
  background: var(--navy);
  color: #c9d3df;
  padding: 3rem 1.25rem;
}

.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  gap: 1.75rem;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.footer__brand .logo-mark {
  color: #9fc4e8;
  --logo-halo: var(--navy);
}

.footer__name {
  color: #f2f5f9;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.footer__name strong { font-weight: 800; color: #f2434c; }

.footer__tag { font-size: 0.85rem; color: #97a4b4; }

.footer__links {
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
}

.footer__links a {
  color: #c9d3df;
  text-decoration: none;
  font-size: 0.9rem;
}

.footer__links a:hover { color: var(--accent); }

.footer__trust {
  font-size: 0.92rem;
  color: #dbe8f4;
  font-weight: 500;
  max-width: 62ch;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.5rem;
}

.footer__legal {
  font-size: 0.8rem;
  color: #7c8b9d;
  margin-top: -0.5rem;
}

/* ---------- Seguimiento de orden ---------- */

.track {
  background:
    radial-gradient(46% 55% at 12% 18%, rgba(76, 149, 220, 0.26), transparent 70%),
    radial-gradient(44% 52% at 88% 82%, rgba(41, 98, 165, 0.30), transparent 72%),
    linear-gradient(150deg, #0e2842 0%, #133655 52%, #0d2036 100%);
  color: #e9f1f9;
}

.track__inner {
  max-width: 780px;
  margin: 0 auto;
  padding: 5.5rem 1.25rem;
}

.track__head { text-align: center; }
.track__head h2 { color: #f4f8fc; }

.track__head p {
  margin: 0.85rem auto 0;
  max-width: 34rem;
  color: #b9cde0;
}

.track__form {
  margin-top: 2.5rem;
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  justify-content: center;
  flex-wrap: wrap;
}

.track__form .form-field { flex: 1 1 320px; max-width: 380px; }

.track__form label { color: #dbe8f4; }

.track__form input {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #f4f8fc;
  background: rgba(9, 26, 44, 0.6);
  border: 1px solid rgba(140, 182, 224, 0.35);
  border-radius: 10px;
  padding: 0.8rem 1rem;
}

.track__form input::placeholder { color: #7794b3; letter-spacing: 0.12em; }

.track__form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(210, 31, 40, 0.25);
}

.track__form .form-hint { color: #9db6cf; }

.track__form .btn { margin-top: 1.6rem; }

.track__error {
  margin-top: 1.25rem;
  text-align: center;
  font-size: 0.93rem;
  font-weight: 500;
  color: #ffb3ad;
}

.track__error:empty { display: none; }

.track__card {
  margin-top: 2.5rem;
  background: rgba(12, 32, 54, 0.72);
  border: 1px solid rgba(140, 182, 224, 0.28);
  border-radius: var(--radius);
  padding: 1.75rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.track__card-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid rgba(140, 182, 224, 0.22);
}

.track__code {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #f4f8fc;
}

.track__ref {
  margin-top: 0.2rem;
  font-size: 0.92rem;
  color: #a9c1d8;
}

.track__state {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: rgba(210, 31, 40, 0.18);
  color: #ff9d97;
  border: 1px solid rgba(242, 67, 76, 0.45);
}

.track__state--done {
  background: rgba(35, 160, 92, 0.18);
  color: #74dba4;
  border-color: rgba(74, 200, 133, 0.45);
}

.track__state--cancel {
  background: rgba(120, 132, 148, 0.18);
  color: #b6c3d2;
  border-color: rgba(160, 176, 194, 0.4);
}

.track__steps {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.track__step {
  position: relative;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 0.9rem;
  padding-bottom: 1.5rem;
}

.track__step:last-child { padding-bottom: 0; }

/* Línea vertical que une los pasos. */
.track__step::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 22px;
  bottom: -2px;
  width: 2px;
  background: rgba(140, 182, 224, 0.25);
}

.track__step:last-child::before { display: none; }

.track__step.is-done::before { background: var(--accent); }

.track__dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid rgba(140, 182, 224, 0.4);
  background: rgba(12, 32, 54, 0.9);
  display: grid;
  place-items: center;
  position: relative;
  z-index: 1;
}

.track__step.is-done .track__dot {
  background: var(--accent);
  border-color: var(--accent);
}

.track__step.is-done .track__dot::after {
  content: "";
  width: 10px;
  height: 6px;
  border-left: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;
  transform: rotate(-45deg) translate(1px, -1px);
}

.track__step.is-current .track__dot {
  border-color: var(--accent);
  box-shadow: 0 0 0 5px rgba(210, 31, 40, 0.18);
}

.track__step.is-current .track__dot::after {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

@media (prefers-reduced-motion: no-preference) {
  .track__step.is-current .track__dot::after {
    animation: track-pulse 1.8s ease-in-out infinite;
  }
  @keyframes track-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(0.75); opacity: 0.65; }
  }
}

.track__step-title {
  font-weight: 600;
  color: #8fa8c1;
  line-height: 1.3;
}

.track__step.is-done .track__step-title,
.track__step.is-current .track__step-title { color: #f4f8fc; }

.track__step-text {
  margin-top: 0.15rem;
  font-size: 0.86rem;
  color: #91a9c2;
}

.track__meta {
  margin: 1.75rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(140, 182, 224, 0.22);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1.25rem;
  font-size: 0.88rem;
}

.track__meta dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #7f97b0;
  align-self: center;
}

.track__meta dd { margin: 0; color: #dbe8f4; font-weight: 500; }

.track__note {
  margin-top: 1.25rem;
  padding: 0.9rem 1.1rem;
  border-left: 3px solid var(--accent);
  background: rgba(210, 31, 40, 0.10);
  border-radius: 0 10px 10px 0;
  font-size: 0.9rem;
  color: #e4eef8;
}

@media (max-width: 560px) {
  .track__form { flex-direction: column; align-items: stretch; }
  .track__form .form-field { max-width: none; }
  .track__form .btn { margin-top: 0.4rem; width: 100%; }
  .track__card { padding: 1.25rem; }
  .track__state { margin-left: 0; }
  .track__meta { grid-template-columns: 1fr; gap: 0.15rem; }
  .track__meta dd { margin-bottom: 0.7rem; }
}

/* ---------- Aviso de forma de pago ---------- */

.pay {
  margin-top: 2.5rem;
  padding: 1.5rem 1.7rem;
  border-radius: var(--radius);
  background: rgba(12, 32, 54, 0.6);
  border: 1px solid rgba(140, 182, 224, 0.28);
  border-left: 4px solid var(--accent);
}

.pay__top {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
}

.pay__methods {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.pay__methods > li { display: flex; }

.pay__method {
  flex: 1;
  font: inherit;
  display: grid;
  justify-items: center;
  gap: 0.3rem;
  text-align: center;
  padding: 1rem 0.75rem;
  border-radius: 12px;
  background: #ffffff;
  border: 1px solid rgba(140, 182, 224, 0.3);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.pay__method:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 10px 24px rgba(4, 14, 28, 0.45);
}

.pay__method:active { transform: scale(0.98); }

.pay__method:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.pay__method.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(210, 31, 40, 0.25);
}

.pay__method img { width: 30px; height: 30px; }

.pay__method-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: #12283f;
  line-height: 1.2;
}

.pay__method-note {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #5d7286;
}

.pay__hint {
  margin-top: 0.9rem;
  font-size: 0.82rem;
  color: #91a9c2;
}

/* Panel con los datos de la cuenta bancaria. */
.pay__bank {
  margin-top: 1.2rem;
  padding: 1.2rem 1.4rem;
  border-radius: 12px;
  background: rgba(9, 26, 44, 0.75);
  border: 1px solid rgba(140, 182, 224, 0.3);
}

.pay__bank[hidden] { display: none; }

@media (prefers-reduced-motion: no-preference) {
  .pay__bank { animation: pay-open 0.28s cubic-bezier(0.16, 1, 0.3, 1); }
  @keyframes pay-open {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: none; }
  }
}

.pay__bank-title {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #7f97b0;
  margin-bottom: 0.9rem;
}

.pay__bank-data {
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.pay__bank-data dt {
  font-size: 0.78rem;
  color: #91a9c2;
  margin-bottom: 0.15rem;
}

.pay__bank-data dd {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: #f4f8fc;
  letter-spacing: 0.01em;
}

.pay__bank-account {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.pay__bank-account span {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  letter-spacing: 0.06em;
}

.pay__copy {
  font-family: inherit;
  font-size: 0.74rem;
  font-weight: 600;
  color: #dbe8f4;
  background: rgba(140, 182, 224, 0.16);
  border: 1px solid rgba(140, 182, 224, 0.35);
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.pay__copy:hover { background: rgba(140, 182, 224, 0.3); }

.pay__copy.is-done {
  background: rgba(35, 160, 92, 0.25);
  border-color: rgba(74, 200, 133, 0.5);
  color: #8fe3b3;
}

.pay__foot {
  margin-top: 1.4rem;
  font-size: 0.88rem;
  color: #b9cde0;
}

.pay__icon {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(210, 31, 40, 0.14);
  color: #ff9d97;
}

.pay__title {
  font-size: 1rem;
  font-weight: 700;
  color: #f4f8fc;
  line-height: 1.3;
}

.pay__text {
  margin-top: 0.4rem;
  font-size: 0.9rem;
  color: #b9cde0;
  max-width: 46ch;
}

.pay__mail {
  display: inline-block;
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 500;
  color: #ffffff;
  text-decoration: none;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: rgba(210, 31, 40, 0.18);
  border: 1px solid rgba(242, 67, 76, 0.45);
  transition: background 0.15s ease, transform 0.15s ease;
}

.pay__mail:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

@media (max-width: 560px) {
  .pay { padding: 1.2rem; }
  .pay__top { flex-direction: column; gap: 0.85rem; }
  .pay__methods { grid-template-columns: 1fr; }
  .pay__method { grid-template-columns: 30px 1fr auto; justify-items: start; text-align: left; align-items: center; gap: 0.7rem; padding: 0.8rem 1rem; }
  .pay__mail { word-break: break-all; }
}

/* ---------- Botón flotante de WhatsApp ---------- */

.chat__whatsapp {
  position: relative;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #25d366;
  color: #ffffff;
  display: grid;
  place-items: center;
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(19, 122, 60, 0.42);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.chat__whatsapp:hover {
  background: #1fbe5b;
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 16px 34px rgba(19, 122, 60, 0.5);
}

.chat__whatsapp:active { transform: scale(0.97); }

.chat__whatsapp-tip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  white-space: nowrap;
  background: var(--brand-navy);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.45rem 0.8rem;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.chat__whatsapp:hover .chat__whatsapp-tip,
.chat__whatsapp:focus-visible .chat__whatsapp-tip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

@media (max-width: 480px) {
  .chat__whatsapp { width: 48px; height: 48px; }
  .chat__whatsapp-tip { display: none; }
}

/* ---------- Chatbot ---------- */

.chat {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 60;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
}

.chat__launcher {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 1.35rem 0.8rem 1rem;
  border: none;
  border-radius: 999px;
  background: var(--brand-navy);
  color: #ffffff;
  font-family: inherit;
  font-size: 0.93rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(11, 34, 64, 0.35);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.chat__launcher:hover {
  background: #0e3563;
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(11, 34, 64, 0.45);
}

.chat__launcher:active { transform: scale(0.98); }

.chat__launcher-icon { display: grid; place-items: center; }

.chat__badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--brand-red);
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.chat__badge[hidden] { display: none; }

.chat.is-open .chat__launcher-text { display: none; }
.chat.is-open .chat__launcher { padding: 0.85rem; }

.chat__panel {
  width: min(360px, calc(100vw - 2.5rem));
  max-height: min(560px, calc(100dvh - 7rem));
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 26px 60px rgba(11, 34, 64, 0.28);
}

.chat__panel[hidden] { display: none; }

@media (prefers-reduced-motion: no-preference) {
  .chat.is-open .chat__panel {
    animation: chat-in 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  }
  @keyframes chat-in {
    from { opacity: 0; transform: translateY(14px) scale(0.97); }
    to { opacity: 1; transform: none; }
  }
}

.chat__head {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.9rem 1rem;
  background: var(--brand-navy);
  color: #ffffff;
}

.chat__avatar {
  width: 34px;
  height: 34px;
  color: #ffffff;
  --logo-halo: #123f75;
}

.chat__head-text { flex: 1; min-width: 0; }

.chat__title { font-size: 0.95rem; font-weight: 700; line-height: 1.2; }

.chat__subtitle {
  font-size: 0.76rem;
  color: #b8cde3;
  line-height: 1.3;
}

.chat__close {
  background: none;
  border: none;
  color: #b8cde3;
  cursor: pointer;
  padding: 4px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  transition: color 0.15s ease, background 0.15s ease;
}

.chat__close:hover { color: #ffffff; background: rgba(255, 255, 255, 0.12); }

.chat__log {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  background: var(--bg);
}

.chat__row { display: flex; }
.chat__row--bot { justify-content: flex-start; }
.chat__row--user { justify-content: flex-end; }

.chat__bubble {
  max-width: 85%;
  padding: 0.6rem 0.85rem;
  border-radius: 14px;
  font-size: 0.88rem;
  line-height: 1.45;
}

.chat__row--bot .chat__bubble {
  background: var(--surface);
  border: 1px solid var(--line);
  border-bottom-left-radius: 5px;
  color: var(--ink);
}

.chat__row--user .chat__bubble {
  background: var(--brand-navy);
  color: #ffffff;
  border-bottom-right-radius: 5px;
}

@media (prefers-reduced-motion: no-preference) {
  .chat__row {
    animation: chat-bubble-in 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  }
  @keyframes chat-bubble-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: none; }
  }
}

.chat__typing {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  padding: 0.75rem 0.9rem;
}

.chat__typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink-faint);
}

@media (prefers-reduced-motion: no-preference) {
  .chat__typing span { animation: chat-dot 1.1s infinite ease-in-out; }
  .chat__typing span:nth-child(2) { animation-delay: 0.15s; }
  .chat__typing span:nth-child(3) { animation-delay: 0.3s; }
  @keyframes chat-dot {
    0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
    30% { opacity: 1; transform: translateY(-3px); }
  }
}

.chat__summary {
  width: 100%;
  margin: 0;
  padding: 0.85rem 1rem;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--line));
  border-radius: 14px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 0.9rem;
  font-size: 0.84rem;
}

.chat__summary dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  align-self: center;
}

.chat__summary dd {
  margin: 0;
  font-weight: 600;
  color: var(--ink);
}

.chat__options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0.85rem 1rem 1rem;
  border-top: 1px solid var(--line);
  background: var(--surface);
  max-height: 190px;
  overflow-y: auto;
}

.chat__options:empty { display: none; }

.chat__option {
  font-family: inherit;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--brand-navy);
  background: transparent;
  border: 1px solid color-mix(in srgb, var(--brand-navy) 35%, transparent);
  border-radius: 999px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.chat__option:hover {
  background: var(--brand-navy);
  color: #ffffff;
}

.chat__option:active { transform: scale(0.97); }

.chat__cta {
  flex: 1 1 100%;
  text-align: center;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  background: var(--accent);
  color: var(--accent-ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.chat__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 40%, transparent);
}

.chat__cta--ghost {
  background: transparent;
  color: var(--brand-navy);
  border: 1px solid var(--line);
  box-shadow: none;
}

.chat__cta--ghost:hover {
  background: var(--surface-alt);
  box-shadow: none;
}

.chat__restart {
  flex: 1 1 100%;
  background: none;
  border: none;
  font-family: inherit;
  font-size: 0.78rem;
  color: var(--ink-faint);
  text-decoration: underline;
  cursor: pointer;
  padding: 0.25rem;
}

.chat__restart:hover { color: var(--ink); }

@media (prefers-color-scheme: dark) {
  .chat__launcher { background: var(--brand-red); }
  .chat__launcher:hover { background: #e6323b; }
  .chat__badge { background: #ffffff; color: var(--brand-red); }
  .chat__head { background: var(--navy-soft); }
  .chat__avatar { color: #9fc4e8; --logo-halo: #16345c; }
  .chat__row--user .chat__bubble { background: var(--navy-soft); }
  .chat__option { color: #cfe0f2; border-color: rgba(159, 196, 232, 0.4); }
  .chat__option:hover { background: #9fc4e8; color: #0c1420; }
  .chat__cta--ghost { color: #cfe0f2; }
}

@media (max-width: 480px) {
  .chat { right: 0.85rem; bottom: 0.85rem; }
  .chat__launcher-text { display: none; }
  .chat__launcher { padding: 0.85rem; }
  .chat__panel { max-height: calc(100dvh - 6rem); }
}

/* ---------- Animaciones de entrada ---------- */

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .hero__inner,
  .gases__inner,
  .about__inner,
  .coverage__inner,
  .contact__inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  /* La foto de los cilindros es vertical: en pantallas pequeñas se muestra completa. */
  .gases__media img { aspect-ratio: auto; }

  .hero__inner { padding-top: 3rem; }
  .hero__media img { aspect-ratio: 4 / 3; }
  .hero__badge { left: 1rem; }

  .products__grid { grid-template-columns: 1fr 1fr; }
  .team__grid { grid-template-columns: 1fr 1fr; }

  .about__media { order: 2; }
}

@media (max-width: 720px) {
  .nav__links,
  .nav__cta,
  .logo-word__tag { display: none; }

  .logo-mark { width: 36px; height: 36px; }
  .logo-word__name { font-size: 1.1rem; }

  .nav__toggle { display: flex; }

  .lang-toggle { margin-left: auto; }

  .nav.is-open .nav__links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 1.25rem;
    gap: 1.1rem;
  }

  .nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
  .nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .products__grid,
  .team__grid,
  .form-row,
  .contact__details { grid-template-columns: 1fr; }

  .product-card--tall { grid-row: auto; }
  .product-card--tall img { aspect-ratio: 16 / 10; min-height: 0; }

  .contact__form { padding: 1.4rem; }
}