/* ============================================
   VYP — Válvulas y Procesos
   Estils basats en el catàleg PDF 2026
   ============================================ */

:root {
  --blau-portada: #4040e6;
  --blau-fosc: #000078;
  --farma: #23756b;
  --termo: #e68c00;
  --ahorro: #004409;
  --gris-fons: #f7f8f9;
  --blanc: #ffffff;
  --text: #333333;
}

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

body {
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--blanc);
  line-height: 1.55;
}

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

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* ============ PORTADA ============ */
.portada {
  background-color: #4040e6;
  background-image: url('../imgs/portada.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  min-height: calc(92vh - 56px);
}

/* ============ NAV ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--blanc);
  border-bottom: 2px solid var(--blau-portada);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 10px 8px;
}
.nav-menu {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2px;
}
/* Botó hamburguesa: amagat a escriptori */
.nav-marca, .nav-toggle, .nav-toggle-input { display: none; }.nav a {
  color: var(--blau-fosc);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 4px;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}
.nav a:hover { background: var(--blau-portada); color: var(--blanc); }
.nav a:focus-visible { outline: 2px solid var(--blau-portada); outline-offset: 2px; }
.nav a.nav-cta { background: var(--blau-portada); color: var(--blanc); }
.nav a.nav-cta:hover { background: var(--blau-fosc); }

/* ============ SECCIONS ============ */
.seccion { padding: 55px 0; }
.seccion:nth-child(even) { background: var(--gris-fons); }

.titulo {
  color: var(--blau-fosc);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.triangulo {
  width: 0; height: 0;
  border-left: 14px solid transparent;
  border-right: 14px solid transparent;
  border-top: 16px solid var(--blau-fosc);
  margin: 10px 0 22px;
}
.sub { margin-bottom: 26px; font-size: 17px; color: #444; }

/* ============ DIVISIONES ============ */
.div-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.div-card {
  padding: 22px 20px;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
  background: var(--blanc);
}
.div-card h3 { font-size: 17px; margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.02em; }
.div-card p { font-size: 14.5px; color: #333; }

.div-card.farma h3 { color: var(--farma); }
.div-card.farma { background: #eef7f5; border-color: #cfe8e3; }
.div-card.industrial h3 { color: var(--blau-fosc); }
.div-card.industrial { background: #eef0fa; border-color: #d4d9f2; }
.div-card.termo h3 { color: var(--termo); }
.div-card.termo { background: #fdf5ea; border-color: #f3dfc2; }
.div-card.ahorro h3 { color: var(--ahorro); }
.div-card.ahorro { background: #eef5ee; border-color: #cfe2cf; }

/* ============ SECTORES ============ */
.sect-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 4px;
}
.sect-grid figure {
  position: relative;
  overflow: hidden;
  background: #222;
  height: clamp(180px, 26vw, 300px);
}
.sect-grid figure:nth-child(-n+3) { grid-column: span 4; }
.sect-grid figure:nth-child(n+4) { grid-column: span 3; }
.sect-grid img { width: 100%; height: 100%; object-fit: cover; }
.sect-grid figcaption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: rgba(0,0,0,0.6);
  color: var(--blanc);
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 600;
  text-align: left;
}

/* ============ PRODUCTOS ============ */
.prod-flex {
  display: flex;
  gap: 40px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}
.prod-lista { flex: 0 1 340px; list-style: none; }
.prod-lista li {
  padding: 7px 0 7px 24px;
  position: relative;
  font-size: 15px;
  border-bottom: 1px dashed #ddd;
}
.prod-lista li::before {
  content: "▸";
  position: absolute; left: 4px;
  color: var(--blau-portada);
  font-weight: 700;
}
.prod-img {
  flex: 1 1 560px;
  width: 100%;
  max-width: 640px;
  align-self: center;
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.12);
  margin: 0 auto;
}

/* ============ SERVICIOS ============ */
.serv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 26px 30px;
}
.serv-item {
  display: flex;
  align-items: center;
  gap: 16px;
  text-align: left;
}
.serv-item img {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}
.serv-item span { font-size: 15px; font-weight: 600; color: var(--blau-fosc); }

/* ============ DIVISIONS (fons) ============ */
.division { border-top: 6px solid var(--blau-portada); }
.division.farma { background: #eef7f5; border-top-color: var(--farma); }
.division.industrial { background: #f3f4fb; border-top-color: var(--blau-fosc); }
.division.termo { background: #fdf7ec; border-top-color: var(--termo); }
.division.ahorro { background: #eef5ee; border-top-color: var(--ahorro); }

.titulo-div {
  font-size: clamp(28px, 4.5vw, 40px);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 30px;
}
.titulo-div.farma { color: var(--farma); }
.titulo-div.industrial { color: var(--blau-fosc); }
.titulo-div.termo { color: var(--termo); }
.titulo-div.ahorro { color: var(--ahorro); }

.termo-cabecera {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 24px;
}
.termo-cabecera .titulo-div { margin-bottom: 0; }
.termo-marques {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-top: 2px;
}
.termo-marques img {
  width: 138px;
  height: 54px;
  object-fit: contain;
}

.sub-titol { font-size: 20px; color: var(--termo); margin: 34px 0 18px; font-weight: 700; }

/* ============ GRUPS DE PRODUCTES (ESTRUCTURA PDF) ============ */
.div-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}
.div-header .titulo-div, .div-header .sub-titol-sub2 { margin-bottom: 0; }
.div-logos {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  max-width: 100%;
}
.div-logos img {
  height: 56px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
}

.linea {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 22px;
}
.linea.dos { grid-template-columns: 1fr 1fr; }

.grup {
  background: var(--blanc);
  border: 1px solid #e2e2e2;
  border-radius: 10px;
  padding: 18px 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.grup h4 {
  font-size: 15px;
  color: var(--blau-fosc);
  text-align: center;
  margin-top: 10px;
  line-height: 1.35;
}
.grup h4.sub-caption {
  color: #555;
  font-weight: 500;
  font-size: 14px;
}

.grup-imgrow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
  gap: 10px;
}
.grup-imgrow img {
  width: 100%;
  height: 150px;
  object-fit: contain;
  background: var(--blanc);
  border: 1px solid #ececec;
  border-radius: 8px;
  padding: 8px;
}
.grup-imgrow.etiquetada figure {
  margin: 0;
  background: var(--blanc);
  border: 1px solid #ececec;
  border-radius: 8px;
  padding: 8px 8px 6px;
  text-align: center;
}
.grup-imgrow.etiquetada img {
  border: none;
  padding: 0;
  height: 140px;
}
.grup-imgrow.etiquetada figcaption {
  font-size: 13px;
  font-weight: 600;
  color: var(--blau-fosc);
  padding-top: 6px;
  border-top: 1px solid #f0f0f0;
  margin-top: 6px;
}

.sub-titol-sub {
  font-size: 20px;
  font-weight: 800;
  color: var(--blau-fosc);
  margin: 26px 0 4px;
}
.sub-titol-sub2 {
  font-size: 17px;
  font-weight: 700;
  color: var(--blau-fosc);
  margin: 22px 0 12px;
}

.instrument-intro {
  font-size: 15px;
  color: var(--blau-fosc);
  font-weight: 600;
  margin-bottom: 8px;
}
.variables {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.variables span {
  background: #eef0fa;
  color: var(--blau-fosc);
  border: 1px solid #d4d9f2;
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 600;
}

.banner {
  margin-top: 10px;
  border-radius: 10px;
  overflow: hidden;
}
.banner img {
  width: 100%;
  max-height: 380px;
  object-fit: cover;
}

/* ============ DIVISIÓ AHORRO ENERGÉTICO (estructura catàleg p.14-15) ============ */
.ae-intro { max-width: 820px; margin-bottom: 26px; }
.ae-intro h3 { font-size: clamp(19px, 2.4vw, 24px); color: var(--ahorro); margin-bottom: 10px; line-height: 1.3; }
.ae-intro p { font-size: 15.5px; margin-bottom: 10px; }

.ae-titol { font-size: clamp(17px, 2.1vw, 21px); color: var(--ahorro); margin: 0 0 16px; line-height: 1.3; }

.ae-bloc { margin-bottom: 30px; }
.ae-bloc:last-child { margin-bottom: 0; }

.ae-grid { display: grid; gap: 16px; }
.ae-grid + .ae-grid { margin-top: 16px; }
.ae-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ae-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.ae-grid--mixta { grid-template-columns: 3.18fr 1fr; }

.ae-card {
  margin: 0;
  background: var(--blanc);
  border: 1px solid #d9e5d9;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.ae-card img { display: block; width: 100%; aspect-ratio: 269 / 245; object-fit: cover; }
.ae-card figcaption {
  background: var(--ahorro);
  color: #fff;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 12px;
  line-height: 1.3;
}

/* --- p.15: files d'imatges enganxades i de punta a punta (proporcions reals del PDF) --- */
.ae-fila { display: grid; align-items: start; margin: 0 0 4px; }
.ae-fila--2 { grid-template-columns: 288fr 277fr; gap: 6px; aspect-ratio: 565 / 214; background: #fff; }
.ae-fila--mixta { grid-template-columns: 414fr 130fr; gap: 5px; }
.ae-fila--3 { grid-template-columns: 169fr 176fr 180fr; gap: 11px; }

.ae-fig { margin: 0; min-width: 0; }
.ae-fig img { display: block; width: 100%; object-fit: cover; }

/* Fila 1: les dues fotos es toquen (gap 0) i la llegenda va sobre la imatge, com al catàleg */
.ae-fila--2 .ae-fig { position: relative; height: 100%; overflow: hidden; align-self: stretch; }
.ae-fila--2 .ae-fig img { height: 100%; }
.ae-fila--2 .ae-fig figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 8px 12px;
  color: var(--ahorro); font-weight: 700; font-size: 14.5px; line-height: 1.25;
}

/* Files 2 i 3: cada imatge amb la seva proporció exacta del catàleg */
.ae-fila--mixta .ae-fig:nth-child(1) img { aspect-ratio: 414 / 200; }
.ae-fila--mixta .ae-fig:nth-child(2) img { aspect-ratio: 130 / 200; }
.ae-fila--3 .ae-fig:nth-child(1) img { aspect-ratio: 169 / 205; }
.ae-fila--3 .ae-fig:nth-child(2) img { aspect-ratio: 176 / 206; }
.ae-fila--3 .ae-fig:nth-child(3) img { aspect-ratio: 180 / 205; }
.ae-fila--mixta figcaption, .ae-fila--3 figcaption {
  color: var(--ahorro); font-weight: 700; font-size: 14.5px; padding: 9px 0 0;
}

@media (max-width: 900px) {
  .termo-cabecera { grid-template-columns: 1fr; gap: 12px; }
  .termo-marques { justify-content: flex-start; padding-top: 0; }
  .ae-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ae-grid--mixta { grid-template-columns: 1fr 1fr; }
  .ae-card img { aspect-ratio: 269 / 220; }
}
@media (max-width: 640px) {
  .div-logos { justify-content: flex-start; }
  .termo-marques img { width: 118px; height: 44px; }
  .ae-grid--2, .ae-grid--3, .ae-grid--mixta { grid-template-columns: 1fr; }
  .ae-card figcaption { font-size: 13.5px; padding: 9px 10px; }
  /* Les files de la p.15 segueixen de punta a punta: la de dalt es queda a 2 columnes */
  .ae-fila--mixta, .ae-fila--3 { grid-template-columns: 1fr; gap: 14px; }
  .ae-fila--mixta .ae-fig img, .ae-fila--3 .ae-fig img { aspect-ratio: auto; }
  .ae-fila--2 .ae-fig figcaption { font-size: 12.5px; padding: 6px 8px; }
  .ae-fila--mixta figcaption, .ae-fila--3 figcaption { font-size: 13.5px; }
}

/* ============ GRUPS DE PRODUCTES (antics) ============ */
.prod-grupo {
  background: var(--blanc);
  border: 1px solid #e2e2e2;
  border-radius: 10px;
  padding: 24px 22px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.prod-grupo h3 { font-size: 17px; color: var(--blau-fosc); margin-bottom: 14px; }
.prod-grupo h4 { font-size: 15px; color: var(--blau-fosc); margin: 14px 0 8px; }
.prod-grupo p { font-size: 14.5px; margin-bottom: 10px; }

.img-fila {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 14px;
}
.img-fila img {
  width: 130px;
  height: 130px;
  object-fit: contain;
  background: var(--blanc);
  border: 1px solid #ececec;
  border-radius: 8px;
  padding: 8px;
  transition: transform 0.2s;
}
.img-fila img:hover { transform: scale(1.06); }

.caracteristiques { list-style: none; margin-top: 4px; }
.caracteristiques li {
  padding: 4px 0 4px 22px;
  position: relative;
  font-size: 14px;
  color: #333;
}
.caracteristiques li::before {
  content: "•";
  position: absolute; left: 4px;
  color: var(--blau-portada);
  font-weight: 800;
}

/* ============ TERMOPLÀSTIQUES ============ */
.termo-card {
  display: flex;
  gap: 22px;
  background: var(--blanc);
  border: 1px solid #e8e0d2;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
  align-items: center;
}
.termo-card img { width: 170px; flex-shrink: 0; object-fit: contain; }
.termo-card h4 { color: var(--termo); font-size: 17px; margin-bottom: 8px; }
.termo-card ul { list-style: none; }
.termo-card li { font-size: 14px; padding: 3px 0 3px 18px; position: relative; }
.termo-card li::before { content: "•"; position: absolute; left: 0; color: var(--termo); font-weight: 800; }

/* ============ GAMA PRODUCTES ============ */
.gama-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 4px;
}
.gama-grid figure {
  background: var(--blanc);
  border: 1px solid #e8e0d2;
  border-radius: 0;
  overflow: hidden;
  text-align: center;
}
.gama-grid img { width: 100%; height: 150px; object-fit: contain; padding: 8px; }
.gama-grid figcaption {
  padding: 6px 3px 12px;
  font-size: 13px;
  font-weight: 400;
  color: var(--blau-fosc);
  border-top: 0;
  background: transparent;
}

/* ============ PEU ============ */
/* ============ CONTACTO ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  margin-top: 34px;
  text-align: left;
}
.contact-info h3 { font-size: 20px; color: var(--blau-fosc); margin-bottom: 12px; }
.contact-intro { font-size: 14.5px; line-height: 1.75; color: #555; margin-bottom: 28px; }
.contact-detail { display: flex; gap: 14px; margin-bottom: 20px; }
.contact-detail .ico { font-size: 20px; line-height: 1.4; }
.contact-detail .label {
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blau-portada);
  margin-bottom: 3px;
}
.contact-detail .value { font-size: 14.5px; line-height: 1.6; color: #333; }
.contact-detail .value a { color: var(--blau-fosc); text-decoration: none; font-weight: 600; }
.contact-detail .value a:hover { text-decoration: underline; }
.social-links { display: flex; gap: 10px; margin-top: 24px; }
.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--blau-portada);
  color: var(--blanc);
  transition: transform 0.2s, background 0.2s;
}
.social-link:hover { background: var(--blau-fosc); transform: translateY(-2px); }
.contact-horario {
  margin-top: 26px;
  padding: 18px 20px;
  background: #eef0fc;
  border-left: 4px solid var(--blau-portada);
  border-radius: 12px;
}
.contact-horario h4 { font-size: 13px; color: var(--blau-fosc); margin-bottom: 6px; }
.contact-horario p { font-size: 13.5px; line-height: 1.7; color: #555; }
.contact-form {
  background: var(--blanc);
  border: 1px solid #e2e4f4;
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 10px 30px rgba(0, 0, 120, 0.07);
}
.contact-form h3 { font-size: 18px; color: var(--blau-fosc); margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: #333; margin-bottom: 6px; }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid #d5d8ec;
  border-radius: 9px;
  font-family: inherit;
  font-size: 14px;
  color: #222;
  background: #fbfbfe;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blau-portada);
  background: var(--blanc);
  box-shadow: 0 0 0 3px rgba(64, 64, 230, 0.12);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.btn-submit {
  width: 100%;
  padding: 13px 20px;
  border: 0;
  border-radius: 9px;
  background: var(--blau-portada);
  color: var(--blanc);
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-submit:hover { background: var(--blau-fosc); }
.form-nota { font-size: 12.5px; color: #777; margin-top: 10px; text-align: center; }
.form-success {
  display: none;
  margin-top: 14px;
  padding: 12px 14px;
  background: #e8f6ee;
  border-left: 4px solid var(--farma);
  border-radius: 9px;
  font-size: 13.5px;
  color: #1c5c54;
}

/* ============ PEU ============ */
.peu {
  background: var(--blau-fosc);
  color: #c9ccf0;
  padding: 54px 0 0;
  text-align: left;
}
.peu-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
  gap: 34px;
}
.peu-logo {
  font-size: 38px;
  font-weight: 900;
  line-height: 1;
  color: var(--blanc);
  letter-spacing: 0.04em;
}
.peu-sub { font-size: 14px; font-weight: 700; color: #fff; margin-top: 10px; }
.peu-tag { font-size: 13.5px; line-height: 1.7; margin-top: 8px; max-width: 300px; }
.peu-logo img {
  height: 42px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
}
.peu h4 {
  color: var(--blanc);
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  margin-bottom: 14px;
}
.peu-links { list-style: none; padding: 0; margin: 0; }
.peu-links li { margin-bottom: 9px; }
.peu-links a { color: #c9ccf0; text-decoration: none; font-size: 14px; transition: color 0.2s; }
.peu-links a:hover { color: var(--blanc); text-decoration: underline; }
.peu-bottom {
  margin-top: 44px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 18px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: space-between;
  font-size: 13px;
  color: #a9adda;
}

/* ============ RESPONSIVE ============ */
html { scroll-behavior: smooth; scroll-padding-top: 62px; }

/* ---- Tauleta: graelles de 2 columnes ---- */
@media (max-width: 1000px) {
  .seccion { padding: 46px 0; }
  .sect-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
  .sect-grid figure:nth-child(-n+3),
  .sect-grid figure:nth-child(n+4) { grid-column: span 1; }
  .sect-grid figure { height: clamp(150px, 30vw, 240px); }
  .linea.dos { grid-template-columns: 1fr; }
  .div-logos img { height: 48px; }
  .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  .peu-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}

/* ---- Mòbil: menú hamburguesa + ajustos ---- */
@media (max-width: 1100px) {
  .nav-inner {
    position: relative;
    justify-content: space-between;
    padding: 7px 14px;
    gap: 0;
  }
  /* Casella oculta però enfocable: no ha de veure's mai */
  .nav-toggle-input {
    display: block;
    position: absolute;
    top: 0; left: 0;
    width: 1px; height: 1px;
    margin: -1px;
    padding: 0;
    border: 0;
    overflow: hidden;
    clip-path: inset(50%);
    opacity: 0;
    appearance: none;
    -webkit-appearance: none;
    pointer-events: none;
  }
  .nav-marca {
    display: block;
    font-size: 23px;
    font-weight: 900;
    letter-spacing: 0.06em;
    line-height: 1;
    color: var(--blau-fosc);
    text-decoration: none;
    padding: 10px 0;
  }
  .nav-marca img { height: 34px; width: auto; display: block; }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 42px;
    padding: 0 10px;
    margin-left: auto;
    cursor: pointer;
  }
  .nav-toggle span {
    display: block;
    height: 3px;
    border-radius: 2px;
    background: var(--blau-fosc);
    transition: transform .25s ease, opacity .2s ease;
  }
  .nav-toggle-input:focus-visible ~ .nav-toggle {
    outline: 2px solid var(--blau-portada);
    outline-offset: 3px;
    border-radius: 6px;
  }
  /* Creu quan està obert */
  .nav-toggle-input:checked ~ .nav-toggle span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .nav-toggle-input:checked ~ .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav-toggle-input:checked ~ .nav-toggle span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  /* Desplegable: flota sobre el contingut (no empeny la pàgina) */
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    background: var(--blanc);
    max-height: 0;
    overflow: hidden;
    transition: max-height .28s ease;
    box-shadow: 0 12px 20px rgba(0,0,0,0.12);
    margin: 0;
  }
  .nav-menu a {
    display: block;
    font-size: 15.5px;
    padding: 13px 18px;
    border-top: 1px solid #ededf5;
    border-radius: 0;
  }
  .nav-menu a:hover { background: #f1f2fb; color: var(--blau-fosc); }
  .nav-toggle-input:checked ~ .nav-menu {
    max-height: 80vh;
    overflow-y: auto;
  }
}

@media (max-width: 640px) {
  html { scroll-padding-top: 60px; }
  .container { padding: 0 16px; }
  .seccion { padding: 38px 0; }
  .sub { font-size: 16px; }
  /* Portada a sang: la imatge omple tot l'ample */
  .portada {
    min-height: 0;
    aspect-ratio: 1240 / 1754;
    background-size: cover;
  }
  .div-card { padding: 18px 16px; }
  .div-card p { font-size: 14px; }
  .grup { padding: 14px 12px; }
  .grup h4 { font-size: 14px; }
  .grup-imgrow { grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); gap: 8px; }
  .grup-imgrow img { height: 120px; padding: 6px; }
  .grup-imgrow.etiquetada img { height: 108px; }
  .grup-imgrow.etiquetada figcaption { font-size: 12px; }
  .prod-flex { gap: 24px; }
  .gama-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .gama-grid img { height: 108px; padding: 8px; }
  .gama-grid figcaption { font-size: 12.5px; padding: 8px 6px; }
  .img-fila { gap: 10px; }
  .img-fila img { width: 92px; height: 92px; padding: 6px; }
  .termo-card { flex-direction: column; align-items: flex-start; padding: 16px; }
  .termo-card img { width: 130px; }
  .serv-grid { gap: 18px 20px; }
  .serv-item img { width: 52px; height: 52px; }
  .banner img { max-height: 240px; }
  .variables span { font-size: 12px; padding: 4px 10px; }
  .peu { padding: 40px 0 0; }
  .peu-logo { font-size: 32px; }
  .peu-logo img { height: 36px; }
  .peu-grid { grid-template-columns: 1fr; gap: 26px; }
  .peu-bottom { flex-direction: column; margin-top: 30px; }
  .contact-grid { margin-top: 26px; }
  .contact-form { padding: 20px 16px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .nav-menu a.nav-cta { background: var(--blau-portada); color: var(--blanc); }
}