/* ============================================
   TALLERES MÁXIMO DÍEZ — Design System
   Industrial metalwork brand
   ============================================ */

:root {
  /* Colors - Industrial light palette (acero, a juego con el logo MD) */
  --color-bg: #f4f6f9;
  --color-bg-alt: #e9edf2;
  --color-bg-card: #ffffff;
  --color-bg-card-hover: #f0f3f7;
  --color-text: #1e2630;
  --color-text-muted: #4d5a6b;
  --color-text-dim: #7c8794;
  --color-accent: #2e5f94;
  --color-accent-hover: #244c79;
  --color-accent-glow: rgba(46, 95, 148, 0.15);
  --color-accent-orange: #4e84bd;
  --color-steel: #aab4c0;
  --color-steel-light: #c5cdd6;
  --color-border: #d7dde5;
  --color-border-light: #c3ccd6;
  --color-success: #2e8b4f;
  --color-whatsapp: #25D366;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(25,35,50,0.08);
  --shadow-md: 0 4px 20px rgba(25,35,50,0.10);
  --shadow-lg: 0 8px 40px rgba(25,35,50,0.14);
  --shadow-accent: 0 0 30px rgba(46, 95, 148, 0.12);
}

/* ============================================
   BASE
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

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

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-accent-hover); }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   HEADER / NAV
   ============================================ */
.site-header {
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.92);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: 1200px;
  margin: 0 auto;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-orange));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
}

.logo-img {
  height: 44px;
  width: auto;
  display: block;
  flex-shrink: 0;
}

/* En anchos medios el emblema ya lleva el nombre: ocultar el texto para no desbordar el menú */
@media (max-width: 1080px) and (min-width: 769px) {
  .site-header .logo > span { display: none; }
}

.logo span { color: var(--color-accent); }

.nav-links {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.nav-links a {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
  background: rgba(30,45,70,0.06);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.2rem;
}

.contact-btn,
.nav-links a.contact-btn,
.nav-links a.contact-btn.active {
  background: var(--color-accent);
  color: #fff !important;
  padding: 8px 18px !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
}
.contact-btn:hover,
.nav-links a.contact-btn:hover { background: var(--color-accent-hover) !important; }

/* ============================================
   PAGE HEADER (product pages)
   ============================================ */
.page-header {
  padding: var(--space-3xl) 0 var(--space-xl);
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 10px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 650px;
  margin: 0 auto;
}

/* ============================================
   BREADCRUMBS
   ============================================ */
.breadcrumbs {
  padding: var(--space-md) 0 0;
  font-size: 0.82rem;
  color: var(--color-text-dim);
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}
.breadcrumbs a { color: var(--color-text-dim); }
.breadcrumbs a:hover { color: var(--color-accent); }
.breadcrumbs .sep { margin: 0 6px; color: var(--color-text-dim); }
.breadcrumbs .current { color: var(--color-accent); }

/* ============================================
   CONTENT SECTIONS
   ============================================ */
.content-section {
  padding: var(--space-2xl) 0;
}

.content-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.content-section h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-accent);
}

.content-section p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* ============================================
   PRODUCT GALLERY
   ============================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin: var(--space-lg) 0;
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  transition: all 0.3s ease;
}

.gallery-item:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
}

/* ============================================
   FEATURES / SPECS
   ============================================ */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.spec-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all 0.3s ease;
}

.spec-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-accent);
}

.spec-card .icon {
  font-size: 1.8rem;
  margin-bottom: var(--space-sm);
}

.spec-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.spec-card p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* ============================================
   HIGHLIGHT BOX (patents, certifications)
   ============================================ */
.highlight-box {
  background: linear-gradient(135deg, rgba(46, 95, 148, 0.08), rgba(78, 132, 189, 0.04));
  border: 1px solid rgba(46, 95, 148, 0.2);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin: var(--space-lg) 0;
}

.highlight-box strong {
  color: var(--color-accent);
}

.highlight-box p {
  margin-bottom: 4px;
}

/* ============================================
   PATENT BADGE
   ============================================ */
.patent-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(46, 95, 148, 0.1);
  border: 1px solid rgba(46, 95, 148, 0.25);
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, var(--color-bg-alt), var(--color-bg));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-3xl) 0;
  text-align: center;
  margin: var(--space-2xl) 0 0;
}

.cta-section h2 {
  font-size: 1.6rem;
  margin-bottom: var(--space-md);
}

.cta-section p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff !important;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text) !important;
  border: 1px solid var(--color-border-light);
}
.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent) !important;
}

.btn-whatsapp {
  background: var(--color-whatsapp);
  color: #fff !important;
}
.btn-whatsapp:hover {
  background: #20bd5a;
  transform: translateY(-1px);
}

/* ============================================
   CONTACT INFO
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.contact-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
  transition: all 0.3s ease;
}

.contact-card:hover {
  border-color: var(--color-accent);
}

.contact-card .icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.contact-card h4 {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.contact-card p {
  font-size: 0.95rem;
  color: var(--color-text);
  margin: 2px 0;
}

.contact-card a {
  color: var(--color-accent);
}

/* ============================================
   MAP
   ============================================ */
.map-container {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin: var(--space-lg) 0;
}

.map-container iframe {
  width: 100%;
  height: 400px;
  display: block;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  margin-top: var(--space-sm);
}

.footer-col h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-text-dim);
  margin-bottom: var(--space-md);
}

.footer-col a {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.88rem;
  padding: 4px 0;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.82rem;
  color: var(--color-text-dim);
}

/* ============================================
   MOBILE NAV
   ============================================ */
@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .nav-links {
    display: flex;
    flex-direction: column;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    gap: 2px;
    transition: max-height 0.35s ease, padding 0.35s ease;
  }

  .nav-links.open {
    max-height: 75vh;
    overflow-y: auto;
    padding: var(--space-md) 0;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .specs-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

/* ============================================
   NAV DROPDOWN (menú de dos niveles)
   ============================================ */
.nav-dropdown { position: relative; }

.nav-drop-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-drop-btn:hover,
.nav-drop-btn.active,
.nav-dropdown.open .nav-drop-btn {
  color: var(--color-text);
  background: rgba(30,45,70,0.06);
}

.nav-drop-btn .caret {
  font-size: 0.65em;
  transition: transform 0.2s;
}
.nav-dropdown.open .caret { transform: rotate(180deg); }

.nav-drop-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 260px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  z-index: 300;
}

.nav-dropdown.open .nav-drop-menu { display: block; }

@media (min-width: 769px) {
  .nav-dropdown:hover .nav-drop-menu { display: block; }
}

.nav-drop-menu a {
  display: block;
  padding: 8px 12px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.nav-drop-menu a:hover,
.nav-drop-menu a.active {
  color: var(--color-text);
  background: rgba(30,45,70,0.06);
}

@media (max-width: 768px) {
  .nav-drop-menu {
    position: static;
    min-width: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0 0 0 var(--space-md);
  }
}

/* ============================================
   WHATSAPP FLOTANTE
   ============================================ */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 56px;
  height: 56px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.35);
}

.whatsapp-float svg {
  width: 30px;
  height: 30px;
  fill: #fff;
}

/* ============================================
   LIGHTBOX GALERÍAS
   ============================================ */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10,10,14,0.94);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1100;
  cursor: zoom-out;
}

.lightbox.open { display: flex; }

.lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
}

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 22px;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
  opacity: 0.8;
  z-index: 1101;
}
.lightbox-close:hover { opacity: 1; }

.gallery-item img,
.gallery-maxicozy .gallery-item img { cursor: zoom-in; }

/* Skeleton suave mientras cargan las imágenes */
.gallery-item img { background: var(--color-bg-card); min-height: 180px; }
.contact-photo-card img { background: var(--color-bg-card); }

/* Respiración entre CTA y footer */
.cta-section { margin-bottom: var(--space-2xl); }

/* ============================================
   FORMULARIO DE CONTACTO
   ============================================ */
.contact-form { max-width: 780px; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

@media (max-width: 600px) {
  .form-grid { grid-template-columns: 1fr; }
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field.full { grid-column: 1 / -1; }

.form-field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-field input,
.form-field select,
.form-field textarea {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.92rem;
}

.form-field textarea { resize: vertical; min-height: 130px; }

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

.form-note {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-top: var(--space-sm);
}

/* ============================================
   PÁGINA 404
   ============================================ */
.error-page {
  text-align: center;
  padding: 90px 20px;
}

.error-page .code {
  font-size: 6rem;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}

.error-page h1 {
  font-size: 1.6rem;
  margin-bottom: var(--space-sm);
}

.error-page p {
  color: var(--color-text-muted);
  max-width: 480px;
  margin: 0 auto var(--space-lg);
}