/* Import modern typography */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&family=Outfit:wght@400;500;700;900&display=swap');

/* CSS Variables for design system tokens (Brutalist Clean Industrial) */
:root {
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Strict palette - No gradients, singular high-contrast accents */
  --bg-primary: #f8f9fa; /* Light off-white paper background */
  --bg-secondary: #ffffff; /* Pure white for card elevation */
  --bg-dark: #111111; /* Charcoal/Steel for dark panels */
  
  --text-main: #1a1a1a;
  --text-muted: #555555;
  --text-light: #ffffff;

  --accent-color: #d35400; /* Signal/Safety Orange for industrial weight */
  --accent-hover: #e67e22;
  --accent-whatsapp: #27ae60; /* Pure Green for Whatsapp action */
  --accent-whatsapp-hover: #219653;
  
  --border-color: #dcdde1;
  --border-dark: #2c3e50;
  
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
}

body {
  line-height: 1.6;
}

/* Visual accessibility focus indicator */
:focus-visible {
  outline: 3px solid var(--accent-color);
  outline-offset: 2px;
}

/* Layout Containers */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Typography styles */
h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

p {
  color: var(--text-muted);
}

/* Global Button Styles - Tactile Feedback */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.875rem;
  padding: 0.75rem 1.5rem;
  min-height: 48px; /* Safe mobile tap target */
  border-radius: 0px; /* Sharp technical geometry */
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
}

/* tactile button push */
.btn:active {
  transform: scale(0.97) translateY(1px);
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--text-light);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 0 12px rgba(211, 84, 0, 0.3);
}

.btn-secondary {
  background-color: var(--bg-dark);
  color: var(--text-light);
}

.btn-secondary:hover {
  background-color: #222222;
}

.btn-full {
  width: 100%;
}

.btn-large {
  font-size: 1rem;
  padding: 1rem 2rem;
  min-height: 54px;
}

/* Header & Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(248, 249, 250, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--border-color);
  height: 72px; /* Navigation height cap */
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
}

.logo img {
  display: block;
}

.nav-desktop {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--accent-color);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-nav-phone {
  background-color: transparent;
  color: var(--accent-whatsapp);
  border-color: var(--accent-whatsapp);
  padding: 0.5rem 1rem;
  min-height: 40px;
}

.btn-nav-phone:hover {
  background-color: var(--accent-whatsapp);
  color: var(--text-light);
  border-color: var(--accent-whatsapp);
}

/* Hero Section (Asymmetric 60/40 Split) */
.hero {
  padding: 3rem 0;
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  width: 90%;
  max-width: 1400px;
  margin: 0 auto;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: -0.04em;
  color: var(--bg-dark);
}

.hero-description {
  font-size: 1.125rem;
  margin-bottom: 2.5rem;
  max-width: 55ch;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-image-wrapper {
  position: relative;
  border: 3px solid var(--bg-dark); /* Sharp technical edge frame */
  padding: 10px;
  background-color: var(--bg-secondary);
}

.hero-product-image {
  display: block;
  max-width: 100%;
  height: auto;
}

.hero-visual-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background-color: var(--bg-dark);
  color: var(--text-light);
  padding: 1rem;
  border: 2px solid var(--accent-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 140px;
}

.badge-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-color);
}

.badge-txt {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

/* Logo Wall (Credibility) */
.logo-wall {
  background-color: var(--bg-dark);
  color: #888888;
  padding: 2rem 0;
  border-top: 2px solid var(--accent-color);
  border-bottom: 2px solid var(--accent-color);
}

.logo-wall-container {
  max-width: 1200px;
  margin: 0 auto;
  overflow: hidden;
}

.logo-track {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.partner-logo {
  transition: color var(--transition-fast);
}

.partner-logo:hover {
  color: var(--text-light);
}

/* Sections Header Utility */
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: 2.25rem;
  text-transform: uppercase;
  color: var(--bg-dark);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
}

/* Featured Products Section */
.featured-products {
  padding: 5rem 0;
  background-color: var(--bg-secondary);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.product-card {
  background-color: var(--bg-primary);
  border: 2px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--bg-dark);
}

.product-card-image {
  overflow: hidden;
  border-bottom: 2px solid var(--border-color);
}

.product-card-image img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.product-card:hover .product-card-image img {
  transform: scale(1.05);
}

.product-card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-size: 1.25rem;
  text-transform: uppercase;
  color: var(--bg-dark);
  margin-bottom: 0.75rem;
}

.product-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.product-specs {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background-color: rgba(0, 0, 0, 0.03);
  padding: 0.75rem;
  margin-bottom: 1.5rem;
}

.product-specs div {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.25rem;
}

.product-specs div:last-child {
  margin-bottom: 0;
}

.product-specs dt {
  font-weight: 700;
  color: var(--text-main);
}

.product-specs dd {
  color: var(--accent-color);
}

/* Interactive Filter Section */
.catalog-filter-section {
  padding: 5rem 0;
  background-color: var(--bg-primary);
  border-top: 2px solid var(--border-color);
}

.filter-controls {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 3rem;
}

.filter-btn {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  background: transparent;
  border: 2px solid var(--border-color);
  padding: 0.5rem 1.25rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--bg-dark);
  background-color: rgba(0, 0, 0, 0.02);
}

.filter-btn.active {
  background-color: var(--bg-dark);
  color: var(--text-light);
  border-color: var(--bg-dark);
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.catalog-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  transition: all var(--transition-fast);
}

.catalog-item:hover {
  border-color: var(--accent-color);
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.catalog-item-title {
  font-size: 1rem;
  text-transform: uppercase;
  color: var(--bg-dark);
  margin-bottom: 0.5rem;
}

.catalog-item-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Technical Weight Calculator */
.calculator-section {
  padding: 5rem 0;
  background-color: var(--bg-secondary);
  border-top: 2px solid var(--border-color);
}

.calc-card {
  max-width: 680px;
  margin: 0 auto;
  border: 3px solid var(--bg-dark);
  background-color: var(--bg-primary);
  padding: 2.5rem;
}

.calc-form {
  margin-top: 2rem;
}

.form-row {
  margin-bottom: 1.5rem;
}

.form-row.col-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.field label {
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
}

.field input, .field select {
  font-family: var(--font-mono);
  font-size: 1rem;
  padding: 0.75rem;
  min-height: 48px;
  border: 2px solid var(--border-color);
  background-color: var(--bg-secondary);
  transition: border-color var(--transition-fast);
}

.field input:focus, .field select:focus {
  border-color: var(--accent-color);
}

.calc-result-area {
  background-color: var(--bg-dark);
  color: var(--text-light);
  padding: 1.5rem;
  text-align: center;
  margin: 2rem 0;
  border-left: 5px solid var(--accent-color);
}

.calc-result-label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #888888;
  margin-bottom: 0.5rem;
}

.calc-result-value {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-color);
}

/* Quote Section & WhatsApp Lead Generation Form */
.quote-section {
  padding: 6rem 0;
  background-color: var(--bg-dark);
  color: var(--text-light);
  border-top: 3px solid var(--accent-color);
}

.quote-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  align-items: center;
}

.quote-info {
  display: flex;
  flex-direction: column;
}

.quote-heading {
  font-size: 2.5rem;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.quote-subhead {
  font-size: 1.1rem;
  color: #b0bec5;
  margin-bottom: 3rem;
  line-height: 1.6;
}

.commercial-bullets {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.bullet-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.bullet-icon {
  background-color: var(--accent-color);
  color: var(--text-light);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.8rem;
}

.bullet-item strong {
  display: block;
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: 0.25rem;
}

.bullet-item div {
  color: #b0bec5;
  font-size: 0.95rem;
}

.compliance-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.compliance-badge {
  border: 1px solid #444444;
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: #1a1a1a;
  color: #b0bec5;
}

/* Quote Capture Form Styles */
.quote-form-container {
  background-color: var(--bg-secondary);
  color: var(--text-main);
  padding: 2.5rem;
  border: 3px solid var(--accent-color);
}

.quote-form fieldset {
  border: none;
}

.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group.col-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group.col-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.form-group label {
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--bg-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-display);
  font-size: 1rem;
  padding: 0.75rem;
  min-height: 48px;
  border: 2px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-main);
  transition: border-color var(--transition-fast);
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-color);
  background-color: var(--bg-secondary);
}

.form-group textarea {
  resize: vertical;
}

/* Validation error messaging */
.field-error {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #c0392b;
  margin-top: 0.25rem;
  display: none;
}

.form-group input.invalid,
.form-group select.invalid {
  border-color: #c0392b;
  background-color: #fdf2f0;
}

.visually-hidden {
  position: absolute;
  clip-path: inset(50%);
  overflow: hidden;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  white-space: nowrap;
}

/* Testimonials Section */
.testimonials-section {
  padding: 5rem 0;
  background-color: var(--bg-primary);
  border-top: 2px solid var(--border-color);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 2rem;
}

.testimonial {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  position: relative;
  display: flex;
  flex-direction: column;
}

.testimonial::before {
  content: "“";
  font-family: var(--font-display);
  font-size: 5rem;
  color: rgba(211, 84, 0, 0.1);
  position: absolute;
  top: 10px;
  left: 15px;
  line-height: 1;
}

.testimonial-body {
  font-size: 1.1rem;
  color: var(--text-main);
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  margin-top: auto;
}

.testimonial-author strong {
  font-size: 0.95rem;
  color: var(--bg-dark);
}

.testimonial-author span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Footer Section */
.footer {
  background-color: #0b0c10;
  color: #a0aab2;
  padding: 4rem 0 0 0;
  border-top: 3px solid var(--accent-color);
}

.footer-grid-container {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-logo {
  display: block;
  margin-bottom: 1.5rem;
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  color: #88939c;
}

.footer-title {
  color: var(--text-light);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.footer-contact p, .footer-address p {
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.footer-contact a {
  color: var(--text-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.link-map {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
}

.link-map:hover {
  color: var(--accent-hover);
}

.footer-bottom {
  border-top: 1px solid #1a1a1a;
  padding: 1.5rem 0;
}

.footer-bottom-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: #666;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .quote-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .header-actions {
    display: none; /* Hide header conversion buttons on small screen */
  }
  .nav-desktop {
    display: none; /* Hide standard nav on mobile */
  }
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }
  .hero-content {
    align-items: center;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-actions {
    justify-content: center;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-visual {
    margin-top: 2rem;
  }
  .form-row.col-3 {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .form-group.col-2 {
    grid-template-columns: 1fr;
  }
  .form-group.col-3 {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .footer-grid-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
  }
}

/* Accessibility settings for users preferring reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-delay: -1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    background-attachment: initial !important;
    scroll-behavior: auto !important;
    transition-duration: 0s !important;
    transition-delay: 0s !important;
  }
}