/**
 * ALFA Ferretería — página de inicio
 * Paleta: azul industrial + amarillo marca
 */

:root {
  --alfa-yellow: #f5c518;
  --alfa-yellow-dim: #d4a912;
  --alfa-navy: #0a1628;
  --alfa-navy-mid: #132338;
  --alfa-slate: #1e3a5f;
  --alfa-text: #e8edf4;
  --alfa-muted: #94a3b8;
  --alfa-card: rgba(255, 255, 255, 0.04);
  --alfa-border: rgba(255, 255, 255, 0.08);
  --alfa-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.45);
  --radius: 14px;
  --radius-sm: 10px;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Bebas Neue", "Impact", sans-serif;
  --max-w: 1180px;
  --header-h: 76px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--alfa-text);
  background: var(--alfa-navy);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--alfa-yellow);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  z-index: 9999;
  padding: 0.75rem 1rem;
  background: var(--alfa-yellow);
  color: var(--alfa-navy);
  font-weight: 700;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* ——— Header ——— */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--alfa-border);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: var(--header-h);
}

.logo img {
  height: clamp(40px, 8vw, 52px);
  width: auto;
}

.main-nav {
  margin-left: auto;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  align-items: center;
}

.main-nav a {
  color: var(--alfa-text);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 0.35rem 0;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--alfa-yellow);
}

.header-meta {
  display: none;
  flex-direction: column;
  gap: 0.15rem;
  font-size: 0.75rem;
  color: var(--alfa-muted);
  text-align: right;
  line-height: 1.3;
}

.header-meta strong {
  color: var(--alfa-text);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-call {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1rem;
  background: linear-gradient(135deg, var(--alfa-yellow) 0%, var(--alfa-yellow-dim) 100%);
  color: var(--alfa-navy) !important;
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 999px;
  text-decoration: none !important;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(245, 197, 24, 0.35);
}

.btn-call:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.btn-call svg {
  flex-shrink: 0;
}

.link-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--alfa-border);
  color: var(--alfa-text);
  text-decoration: none !important;
  transition: background 0.2s, border-color 0.2s;
}

.link-social:hover {
  background: var(--alfa-card);
  border-color: rgba(245, 197, 24, 0.4);
  color: var(--alfa-yellow);
}

.nav-toggle {
  display: flex;
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--alfa-border);
  color: var(--alfa-text);
  padding: 0.5rem 0.65rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--alfa-yellow);
  color: var(--alfa-yellow);
}

@media (min-width: 960px) {
  .header-meta {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .main-nav {
    margin-left: 1.5rem;
  }
}

@media (max-width: 959px) {
  .main-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: var(--alfa-navy-mid);
    border-bottom: 1px solid var(--alfa-border);
    padding: 1rem 1.25rem 1.25rem;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  }

  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .main-nav li {
    border-bottom: 1px solid var(--alfa-border);
  }

  .main-nav a {
    display: block;
    padding: 0.85rem 0;
  }

  .header-actions .btn-call span:last-child {
    display: none;
  }
}

/* ——— Hero ——— */

.hero {
  position: relative;
  min-height: min(72vh, 640px);
  display: flex;
  align-items: center;
  padding: 3rem 1.25rem 4rem;
  background-color: var(--alfa-navy-mid);
  background-size: cover;
  background-position: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(10, 22, 40, 0.94) 0%,
    rgba(10, 22, 40, 0.72) 45%,
    rgba(10, 22, 40, 0.55) 100%
  );
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--alfa-yellow);
  margin: 0 0 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1.05;
  margin: 0 0 1rem;
  color: #fff;
  max-width: 18ch;
}

.hero-lead {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--alfa-muted);
  max-width: 42ch;
  margin: 0 0 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none !important;
  transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
}

.btn-primary {
  background: var(--alfa-yellow);
  color: var(--alfa-navy) !important;
  box-shadow: var(--alfa-shadow);
}

.btn-primary:hover {
  filter: brightness(1.06);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: #fff !important;
  border: 2px solid rgba(255, 255, 255, 0.35);
}

.btn-ghost:hover {
  border-color: var(--alfa-yellow);
  color: var(--alfa-yellow) !important;
}

/* ——— Sell row ——— */

.sell-strip {
  border-bottom: 1px solid var(--alfa-border);
  background: var(--alfa-navy-mid);
}

.sell-strip-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.25rem 1.25rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.sell-card {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 1rem 1.1rem;
  background: var(--alfa-card);
  border: 1px solid var(--alfa-border);
  border-radius: var(--radius);
}

.sell-card svg {
  flex-shrink: 0;
  color: var(--alfa-yellow);
}

.sell-card h2 {
  margin: 0 0 0.25rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}

.sell-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--alfa-muted);
  line-height: 1.45;
}

/* ——— Section common ——— */

.section {
  padding: 4rem 1.25rem;
}

.section-alt {
  background: linear-gradient(180deg, var(--alfa-navy-mid) 0%, var(--alfa-navy) 100%);
}

.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 2.75rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  letter-spacing: 0.04em;
  color: #fff;
  margin: 0 0 0.75rem;
  font-weight: 400;
}

.section-head p {
  margin: 0;
  color: var(--alfa-muted);
  font-size: 1.05rem;
}

.accent-line {
  width: 56px;
  height: 4px;
  background: var(--alfa-yellow);
  margin: 0 auto 1rem;
  border-radius: 2px;
}

/* ——— Categories ——— */

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.category-card {
  display: flex;
  gap: 1rem;
  padding: 1.35rem 1.25rem;
  background: var(--alfa-card);
  border: 1px solid var(--alfa-border);
  border-radius: var(--radius);
  transition: border-color 0.2s, transform 0.2s;
}

.category-card:hover {
  border-color: rgba(245, 197, 24, 0.35);
  transform: translateY(-3px);
}

.category-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--alfa-slate);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
}

.category-icon svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: block;
  color: var(--alfa-yellow);
}

.category-card:hover .category-icon svg {
  color: #fff;
}

.category-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}

.category-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--alfa-muted);
  line-height: 1.5;
}

/* ——— Directory CTA ——— */

.directory {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--alfa-border);
  display: grid;
  grid-template-columns: 1fr;
  background: var(--alfa-navy-mid);
}

@media (min-width: 880px) {
  .directory {
    grid-template-columns: 220px 1fr auto;
    align-items: stretch;
  }
}

.directory-visual {
  background: linear-gradient(160deg, var(--alfa-slate) 0%, var(--alfa-navy) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  min-height: 180px;
}

.directory-visual img {
  max-width: 140px;
  opacity: 0.95;
}

.directory-body {
  padding: 2rem 1.75rem 1.75rem;
}

.directory-body h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  letter-spacing: 0.03em;
  margin: 0 0 0.5rem;
  color: #fff;
}

.directory-body .sub {
  color: var(--alfa-yellow);
  font-weight: 700;
  font-size: 0.95rem;
  margin: 0 0 1rem;
}

.directory-body > p {
  margin: 0 0 1rem;
  color: var(--alfa-muted);
  font-size: 0.95rem;
  max-width: 52ch;
}

.directory-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.directory-list li {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  background: rgba(245, 197, 24, 0.12);
  color: var(--alfa-text);
  border-radius: 999px;
  border: 1px solid rgba(245, 197, 24, 0.25);
}

.directory-action {
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-top: 1px solid var(--alfa-border);
}

@media (min-width: 880px) {
  .directory-action {
    border-top: none;
    border-left: 1px solid var(--alfa-border);
  }
}

/* ——— Brands ——— */

.brands-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  align-items: center;
}

@media (min-width: 640px) {
  .brands-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.brand-item {
  padding: 1.25rem;
  background: var(--alfa-card);
  border: 1px solid var(--alfa-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
  transition: border-color 0.2s;
}

.brand-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.brand-item img {
  max-height: 52px;
  width: auto;
  object-fit: contain;
  filter: brightness(1.08) contrast(1.05);
  opacity: 0.92;
}

/* ——— Footer ——— */

.site-footer {
  border-top: 1px solid var(--alfa-border);
  background: #060d18;
  padding: 3rem 1.25rem 2rem;
}

.footer-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.footer-brand .name {
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: 0.06em;
  color: #fff;
  margin: 0 0 0.75rem;
}

.footer-brand p {
  margin: 0;
  color: var(--alfa-muted);
  font-size: 0.95rem;
  max-width: 36ch;
}

.footer-contact h3 {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--alfa-yellow);
  letter-spacing: 0.06em;
}

.footer-contact p {
  margin: 0 0 1.25rem;
  color: var(--alfa-muted);
  font-size: 0.9rem;
}

.contact-rows {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.contact-row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.9rem;
  color: var(--alfa-text);
}

.contact-row svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--alfa-yellow);
}

.footer-bottom {
  max-width: var(--max-w);
  margin: 2.5rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--alfa-border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--alfa-muted);
}

.footer-bottom a {
  color: var(--alfa-muted);
}

.footer-bottom a:hover {
  color: var(--alfa-yellow);
}

.to-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--alfa-card);
  border: 1px solid var(--alfa-border);
  color: var(--alfa-yellow);
  text-decoration: none !important;
}

.to-top:hover {
  background: rgba(245, 197, 24, 0.12);
  border-color: rgba(245, 197, 24, 0.35);
}

/* ——— Páginas interiores ——— */

.hero--page {
  min-height: auto;
  padding: 3.5rem 1.25rem 3rem;
}

.hero--page::before {
  background: linear-gradient(
    105deg,
    rgba(10, 22, 40, 0.92) 0%,
    rgba(10, 22, 40, 0.75) 100%
  );
}

.hero--page h1 {
  max-width: none;
  font-size: clamp(2rem, 4.5vw, 3rem);
}

.hero--page .hero-lead {
  max-width: 52ch;
}

.page-main {
  padding-bottom: 2rem;
}

.prose {
  max-width: 68ch;
  margin: 0 auto;
  color: var(--alfa-muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.prose h2,
.prose h3 {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  color: #fff;
  font-weight: 400;
  margin: 2rem 0 0.75rem;
}

.prose h2 {
  font-size: 1.75rem;
}

.prose h3 {
  font-size: 1.35rem;
}

.prose p {
  margin: 0 0 1rem;
}

.prose a {
  color: var(--alfa-yellow);
}

.trio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.trio-card {
  padding: 1.35rem 1.25rem;
  background: var(--alfa-card);
  border: 1px solid var(--alfa-border);
  border-radius: var(--radius);
}

.trio-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--alfa-yellow);
  font-family: var(--font-sans);
  letter-spacing: normal;
}

.trio-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--alfa-muted);
  line-height: 1.55;
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.adv-card {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--alfa-navy-mid);
  border: 1px solid var(--alfa-border);
  border-radius: var(--radius);
}

.adv-card-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--alfa-slate);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--alfa-yellow);
}

.adv-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  font-family: var(--font-sans);
  letter-spacing: normal;
}

.adv-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--alfa-muted);
  line-height: 1.5;
}

.map-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--alfa-border);
  background: var(--alfa-navy-mid);
  line-height: 0;
}

.map-frame iframe {
  display: block;
  width: 100%;
  height: min(420px, 70vw);
  border: 0;
}

.contact-layout {
  display: grid;
  gap: 2rem;
}

@media (min-width: 900px) {
  .contact-layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.contact-cards {
  display: grid;
  gap: 1rem;
}

.contact-info-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.15rem 1.25rem;
  background: var(--alfa-card);
  border: 1px solid var(--alfa-border);
  border-radius: var(--radius);
}

.contact-info-card svg {
  flex-shrink: 0;
  color: var(--alfa-yellow);
  margin-top: 2px;
}

.contact-info-card h3 {
  margin: 0 0 0.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--alfa-yellow);
}

.contact-info-card p,
.contact-info-card a {
  margin: 0;
  font-size: 0.95rem;
  color: var(--alfa-text);
}

.mail-form label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--alfa-muted);
  margin-bottom: 0.35rem;
}

.mail-form input,
.mail-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--alfa-text);
  background: var(--alfa-navy-mid);
  border: 1px solid var(--alfa-border);
  border-radius: var(--radius-sm);
}

.mail-form input:focus,
.mail-form textarea:focus {
  outline: none;
  border-color: rgba(245, 197, 24, 0.45);
}

.mail-form textarea {
  min-height: 140px;
  resize: vertical;
}

.btn-muted {
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: none;
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 720px;
  margin: 0 auto;
}

.post-card {
  padding: 1.5rem 1.35rem;
  background: var(--alfa-card);
  border: 1px solid var(--alfa-border);
  border-radius: var(--radius);
  transition: border-color 0.2s;
}

.post-card:hover {
  border-color: rgba(245, 197, 24, 0.3);
}

.post-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-family: var(--font-sans);
  font-weight: 700;
}

.post-card h2 a {
  color: #fff;
  text-decoration: none !important;
}

.post-card h2 a:hover {
  color: var(--alfa-yellow);
}

.post-card .meta {
  font-size: 0.8rem;
  color: var(--alfa-muted);
  margin-bottom: 0.75rem;
}

.post-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--alfa-muted);
  line-height: 1.55;
}

.article-header {
  max-width: 720px;
  margin: 0 auto 2rem;
  text-align: center;
}

.article-header h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: 0.03em;
  color: #fff;
  margin: 0 0 0.5rem;
  font-weight: 400;
}

.article-header time {
  font-size: 0.9rem;
  color: var(--alfa-muted);
}

.article-body {
  max-width: 68ch;
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
  color: var(--alfa-muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.article-body p {
  margin: 0 0 1rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.notice-box {
  padding: 1.25rem 1.5rem;
  background: rgba(245, 197, 24, 0.08);
  border: 1px solid rgba(245, 197, 24, 0.25);
  border-radius: var(--radius);
  color: var(--alfa-text);
  font-size: 0.95rem;
  line-height: 1.55;
  max-width: 720px;
  margin: 0 auto;
}