/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 0.2rem 0.6rem;
  min-height: 3rem; padding: 0.55rem 1.5rem;
  border: 2px solid transparent; border-radius: var(--r-pill);
  font: 800 0.9rem/1.15 var(--font-main); letter-spacing: 0.01em;
  text-decoration: none; text-align: center; cursor: pointer;
  transition: transform var(--dur-normal) var(--ease-out), background-color var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast);
}
.btn .i { transition: transform var(--dur-normal) var(--ease-out); }
.btn:hover .i { transform: translateX(3px); }
.btn:active { transform: translateY(1px) scale(0.98); }
.btn small { font-weight: 600; font-size: 0.72rem; opacity: 0.85; }
.btn--red { background: var(--red); color: var(--white); }
.btn--red:hover { background: var(--red-press); }
.btn--white { background: var(--white); color: var(--navy); }
.btn--white:hover { background: var(--blue-tint); }
.btn--navy { background: var(--navy); color: var(--white); }
.btn--navy:hover { background: var(--blue-ink); }
.btn--ghost { border-color: color-mix(in oklab, var(--white) 70%, transparent); color: var(--white); }
.btn--ghost:hover { background: color-mix(in oklab, var(--white) 16%, transparent); }
.btn--sm { min-height: 2.75rem; padding-inline: 1.25rem; font-size: 0.85rem; }
.btn--icon { padding-inline: 0.9rem; min-width: 3rem; }

/* ---------- Duotono azul / negro con grano (P4) ---------- */
.duo { --shade: var(--navy); position: relative; isolation: isolate; overflow: hidden; background: var(--blue); }
.hero .duo, .video .duo { --shade: var(--night); }
.duo img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(1) contrast(1.2) brightness(1.08);
  mix-blend-mode: multiply;
  transition: transform var(--dur-slow) var(--ease-out);
}
.duo::before { /* grano */
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background-image: var(--grain-dark); background-size: 220px 220px;
  opacity: 0.4; mix-blend-mode: overlay;
}
.duo::after { /* sombra inferior */
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, transparent 45%, color-mix(in oklab, var(--shade) 78%, transparent) 100%);
}
@media (hover: hover) { .tile:hover .duo img, .serv-card:hover .duo img { transform: scale(1.05); } }

.chip {
  position: absolute; z-index: 2; left: 0.9rem; bottom: 0.9rem;
  padding: 0.35rem 0.8rem; border-radius: var(--r-pill); background: var(--navy); color: var(--white);
  font-weight: 600; font-size: 0.75rem;
}

/* Barras animadas (isotipo) */
.bars { overflow: visible; }
.bars .bar { fill: var(--bar, var(--blue)); transform-box: fill-box; transform-origin: 50% 100%; }
.bars .bar-top { fill: var(--bar-top, var(--red)); }

/* ---------- Cabecera fija (P5): sticky en todos los anchos; hamburguesa hasta 1039 px ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60; height: var(--header-h);
  background: var(--bg); border-bottom: 1px solid var(--line);
}
.header-inner {
  width: min(100% - 2 * var(--gutter), var(--max)); height: 100%; margin-inline: auto;
  display: flex; align-items: center; gap: 0.5rem;
}
.brand { display: block; flex: none; margin-right: auto; line-height: 0; border-radius: var(--r-sm); }
.brand img { width: 132px; height: 54px; }
.header-actions { display: flex; align-items: center; gap: 0.5rem; min-width: 0; }
.header-cta { min-width: 0; text-wrap: balance; }

.wa-link {
  position: relative; display: none; place-items: center; width: 2.75rem; height: 2.75rem;
  border: 2px solid var(--line); border-radius: 50%;
  font-weight: 600; font-size: 0.82rem; text-decoration: none;
  transition: border-color var(--dur-fast), background-color var(--dur-fast);
}
.wa-link span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.wa-link small { font-weight: 600; color: var(--muted); }
.wa-link:hover { border-color: var(--blue); background: var(--blue-tint); }

/* Botón hamburguesa (solo con JS) */
.nav-toggle {
  display: none; place-items: center; width: 2.75rem; height: 2.75rem; padding: 0;
  border: 2px solid var(--navy); border-radius: 50%; background: transparent; color: var(--navy); cursor: pointer;
  transition: border-color var(--dur-fast), background-color var(--dur-fast), color var(--dur-fast);
}
.js .nav-toggle { display: grid; }
.nav-toggle:hover { background: var(--blue-tint); }
.nav-toggle .i-close { display: none; }
.nav-toggle[aria-expanded="true"] .i-open { display: none; }
.nav-toggle[aria-expanded="true"] .i-close { display: block; }
.nav-toggle[aria-expanded="true"] { background: var(--navy); color: var(--white); --focus: var(--blue); }

/* Menú: panel desplegable en móvil y tableta */
@keyframes drop { from { opacity: 0; transform: translateY(-8px); } }
.main-nav {
  display: none; position: absolute; top: 100%; left: 0; right: 0;
  padding: 0.25rem var(--gutter) 1rem;
  background: var(--bg); border-bottom: var(--hard) solid var(--navy);
  box-shadow: 0 24px 40px -24px color-mix(in srgb, var(--navy) 55%, transparent);
}
.main-nav.is-open { display: block; animation: drop var(--dur-normal) var(--ease-out) both; }
.main-nav a {
  display: flex; align-items: center; min-height: 3rem; padding-inline: 0.25rem;
  border-bottom: 1px solid var(--line);
  font-weight: 800; font-size: 1.05rem; text-decoration: none;
  transition: background-color var(--dur-fast), color var(--dur-fast);
}
.main-nav li:last-child a { border-bottom: 0; }
.main-nav a:hover { color: var(--blue-text); }

/* Sin JS no hay botón: el menú queda visible bajo la barra */
@media (max-width: 1039.98px) {
  html:not(.js) .site-header { position: relative; height: auto; }
  html:not(.js) .header-inner { flex-wrap: wrap; padding-block: 0.5rem; }
  html:not(.js) .main-nav { display: block; position: static; order: 3; flex-basis: 100%; padding: 0; border: 0; box-shadow: none; }
  html:not(.js) .main-nav ul { display: flex; flex-wrap: wrap; gap: 0 1rem; }
  html:not(.js) .main-nav a { border: 0; }
}

@media (max-width: 420px) {
  .header-inner { gap: 0.35rem; }
  .header-cta { padding: 0.35rem 0.7rem; font-size: 0.74rem; line-height: 1.1; }
}
@media (min-width: 900px) {
  .wa-link { display: grid; }
}
@media (min-width: 1040px) {
  .nav-toggle, .js .nav-toggle { display: none; }
  .brand { margin-right: 0; }
  .main-nav, .main-nav.is-open {
    display: block; position: static; margin-inline: auto; padding: 0;
    background: none; border: 0; box-shadow: none; animation: none;
  }
  .main-nav ul { display: flex; gap: 0.1rem; }
  .main-nav a { min-height: 2.75rem; padding-inline: 0.7rem; border: 0; border-radius: var(--r-pill); font-weight: 600; font-size: 0.88rem; }
  .main-nav a:hover { background: var(--blue-tint); }
}
@media (min-width: 1200px) {
  .main-nav a { padding-inline: 0.95rem; font-size: 0.9rem; }
}
@media (min-width: 1280px) {
  .wa-link { display: inline-flex; gap: 0.5rem; width: auto; padding-inline: 0.5rem; border-color: transparent; border-radius: var(--r-pill); }
  .wa-link span { position: static; width: auto; height: auto; overflow: visible; clip-path: none; white-space: normal; }
}


/* ---------- Estado del formulario (respuesta del servidor) ---------- */
.form__status {
  grid-column: 1 / -1; padding: 0.85rem 1.1rem; border-radius: var(--r-sm);
  border: var(--hard) solid var(--navy); background: var(--blue-tint);
  font-weight: 600; font-size: var(--text-small); line-height: 1.45;
}
.form__status[data-tipo="ok"] { border-color: var(--navy); background: var(--blue-tint); }
.form__status[data-tipo="error"] { border-color: var(--red); background: color-mix(in srgb, var(--red) 8%, var(--bg)); }
.form__status[hidden] { display: none; }
.btn[disabled] { opacity: 0.6; cursor: progress; }