/* =========================================================
   Alferro Solucions Tècniques SLU — sistema de disseny
   ========================================================= */

:root {
  --color-navy: #2c3067;
  --color-navy-dark: #1c1f45;
  --color-navy-tint: #eef0fa;
  --color-accent: #e2611c;
  --color-accent-dark: #c14e12;
  --color-bg: #f6f7fb;
  --color-white: #ffffff;
  --color-text: #1b1d2a;
  --color-text-muted: #5b6070;
  --color-border: #e2e4ec;

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 2px 10px rgba(28, 31, 69, 0.06);
  --shadow-lg: 0 12px 32px rgba(28, 31, 69, 0.12);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  --container-width: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #14162a;
    --color-white: #1b1e38;
    --color-text: #eef0fa;
    --color-text-muted: #a8acc7;
    --color-border: #2c2f52;
    --color-navy-tint: #202456;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.45);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  line-height: 1.2;
  margin: 0 0 0.5em;
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--color-text-muted); }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.6em;
}

/* ---------- Botons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.85em 1.6em;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover { background: var(--color-accent-dark); }

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

.btn-outline-navy {
  background: transparent;
  border-color: var(--color-navy);
  color: var(--color-navy);
}
.btn-outline-navy:hover { background: var(--color-navy-tint); }

.btn-ghost {
  background: var(--color-navy-tint);
  color: var(--color-navy);
}
.btn-ghost:hover { background: var(--color-border); }

.btn-block { width: 100%; justify-content: center; }
.btn-sm { padding: 0.55em 1.1em; font-size: 0.85rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--color-navy);
}
.brand img { height: 40px; width: auto; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.main-nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
}
.main-nav a:hover { color: var(--color-accent); }
.main-nav .btn { margin-left: 6px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-navy);
  margin: 5px 0;
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 16px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav .btn { margin-left: 0; }
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
  color: #fff;
  padding: 72px 0;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero h1 { color: #fff; }
.hero p.lead {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.15rem;
  max-width: 46ch;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 1.6em; }
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 2.4em;
  flex-wrap: wrap;
}
.hero-stats div strong { display: block; font-size: 1.6rem; }
.hero-stats div span { color: rgba(255, 255, 255, 0.7); font-size: 0.85rem; }

.hero-panel {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.hero-panel ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.hero-panel li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: rgba(255, 255, 255, 0.92);
  font-weight: 600;
  font-size: 0.95rem;
}
.hero-panel li::before {
  content: "";
  flex: none;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  margin-top: 7px;
}

@media (max-width: 860px) {
  .hero .container { grid-template-columns: 1fr; }
}

/* ---------- Seccions genèriques ---------- */
section { padding: 64px 0; }
.section-head {
  max-width: 60ch;
  margin-bottom: 40px;
}
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.bg-white { background: var(--color-white); }
.bg-navy { background: var(--color-navy); color: #fff; }
.bg-navy h2, .bg-navy p { color: #fff; }
.bg-navy p { opacity: 0.85; }

/* ---------- Targetes de línia de producte (Cibo / V2) ---------- */
.brand-lines {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
@media (max-width: 760px) { .brand-lines { grid-template-columns: 1fr; } }

.brand-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-decoration: none;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.brand-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.brand-card .tag {
  align-self: flex-start;
  background: var(--color-navy-tint);
  color: var(--color-navy);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
}
.brand-card h3 { font-size: 1.5rem; margin-bottom: 0.2em; }
.brand-card .cta { font-weight: 700; color: var(--color-accent); }

/* ---------- Grid de categories ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 22px;
}
.category-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
  display: flex;
  flex-direction: column;
}
.category-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.category-card .thumb {
  aspect-ratio: 4 / 3;
  background: var(--color-navy-tint);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.category-card .thumb img { width: 100%; height: 100%; object-fit: contain; padding: 10px; }
.category-card .thumb.placeholder {
  color: var(--color-navy);
  font-weight: 700;
  font-size: 0.85rem;
  text-align: center;
  padding: 12px;
  opacity: 0.55;
}
.category-card .body { padding: 16px 18px 20px; }
.category-card h3 { font-size: 1.02rem; margin-bottom: 4px; }
.category-card .meta { font-size: 0.82rem; color: var(--color-text-muted); }

/* ---------- Fitxa de producte ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 22px;
}
.product-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.product-card .thumb {
  aspect-ratio: 1 / 1;
  background: var(--color-navy-tint);
  display: flex; align-items: center; justify-content: center;
}
.product-card .thumb img { width: 100%; height: 100%; object-fit: contain; padding: 14px; }
.product-card .body { padding: 14px 16px 18px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.product-card .ref {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
  color: var(--color-navy);
  font-weight: 700;
}
.product-card p { margin: 0; font-size: 0.88rem; flex: 1; }
.product-card .price {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-accent);
}

.badge-oferta {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
}

/* ---------- Banner de categoria ---------- */
.category-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
.category-hero img {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-white);
}
@media (max-width: 760px) { .category-hero { grid-template-columns: 1fr; } }

.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 18px;
}
.breadcrumb a { text-decoration: none; color: var(--color-navy); font-weight: 600; }

.callout-pdf {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--color-navy-tint);
  border-radius: var(--radius);
  padding: 22px 26px;
  margin-top: 40px;
}
.callout-pdf p { margin: 0; color: var(--color-navy); font-weight: 600; }

/* ---------- Formulari de contacte ---------- */
.form-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 36px;
  max-width: 640px;
}
.field { margin-bottom: 20px; }
.field label { display: block; font-weight: 700; font-size: 0.9rem; margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 0.75em 0.9em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  font: inherit;
  color: var(--color-text);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--color-navy);
  outline-offset: 1px;
}
.checkbox-group { display: flex; gap: 18px; flex-wrap: wrap; }
.checkbox-group label { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 0.9rem; }
.checkbox-group input { width: auto; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 48px;
}
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-info-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.contact-info-list li { display: flex; gap: 12px; }
.contact-info-list strong { display: block; color: var(--color-text); }

/* ---------- Client destacat ---------- */
.client-strip {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 26px;
  box-shadow: var(--shadow);
}
.client-strip .avatar {
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--color-navy);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 800;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-navy-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h4 { color: #fff; font-size: 0.95rem; }
.site-footer .brand { color: #fff; margin-bottom: 12px; }
.footer-links { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-links a { text-decoration: none; color: rgba(255, 255, 255, 0.75); font-size: 0.9rem; }
.footer-links a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 40px;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom a { color: rgba(255, 255, 255, 0.7); text-decoration: none; }

/* ---------- Utilitats ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.notice {
  background: var(--color-navy-tint);
  color: var(--color-navy);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-size: 0.88rem;
  font-weight: 600;
}