/* Custom Variables */
:root {
  --bg-white: #faf9f6; /* Slightly metallic warm card background */
  --bg-light: #f2f0eb; /* Primary warm industrial light gray background */
  --bg-light-accent: #e5e3dd; /* Slightly darker warm gray section fill */
  
  --bg-darker: #111213; /* Deepest anthracite for footers/dark accents */
  --bg-dark: #1b1c1e; /* Graphite black (main dark theme color) */
  --bg-hover: #e0ded9; /* Muted hover background */
  
  --primary: #9e472a; /* Muted oxidized copper / industrial rust */
  --primary-hover: #7f3820; /* Darker rust/copper */
  
  --secondary: #4a525a; /* Dark steel gray */
  --secondary-hover: #363c42; /* Darker steel */
  
  --text-main: #1b1c1e; /* Graphite black text (high contrast on light gray) */
  --text-muted: #50555c; /* Muted steel gray text */
  --text-light: #faf9f6; /* Light gray/white text for dark sections */
  --text-light-muted: #a6acb5; /* Muted light steel text */
  
  --border: #d8dadc; /* Technical steel border */
  --border-dark: #32353a; /* Dark steel border */
  
  --font-title: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
  
  --container-width: 1200px;
}

/* Reset & Global Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important; /* Force complete sharp edges */
  box-shadow: none !important; /* Completely eliminate glows/shadows */
}

/* Disable transitions and animations on standard UI elements for instant technical response */
.btn, .tab-btn, .download-card, table, form, input, select, textarea {
  transition: none !important;
  transform: none !important;
}

/* Cards & Containers */
.card {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-top: 3px solid var(--secondary);
  padding: 3rem;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-light);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-title);
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Layout Utilities */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 3rem;
  width: 100%;
}

.section-padding {
  padding: 6rem 0; /* Compact technical spacing */
  border-bottom: 1px solid var(--border);
}

.section-alternate {
  background-color: var(--bg-light-accent);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 968px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .section-padding {
    padding: 3.5rem 0;
  }
  .container {
    padding: 0 1.5rem;
  }
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--bg-dark);
  border-bottom: 1px solid var(--border-dark);
  z-index: 1000;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 1.75rem;
  align-items: center;
}

.nav-link {
  font-family: var(--font-title);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light-muted);
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-light);
  border-bottom: 2px solid var(--primary);
}

.nav-btn {
  background-color: var(--primary);
  color: var(--text-light);
  border: 1px solid var(--primary);
  padding: 0.6rem 1.5rem;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

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





/* Mobile toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 5px;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--text-light);
}

@media (max-width: 1024px) {
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    right: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: var(--bg-dark);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    border-top: 1px solid var(--border-dark);
  }
  
  .nav-menu.active {
    right: 0;
  }
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--text-light);
  border: 1px solid var(--primary);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--text-light);
  border: 1px solid var(--secondary);
}

.btn-secondary:hover {
  background-color: var(--secondary-hover);
  border-color: var(--secondary-hover);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-dark);
}

.btn-outline:hover {
  background-color: var(--text-main);
  color: var(--bg-white);
  border-color: var(--text-main);
}

.btn-outline-light {
  background: transparent;
  color: var(--text-light);
  border: 1px solid var(--border-dark);
}

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

/* Hero Section */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding-top: 110px;
  background-color: var(--bg-dark);
  color: var(--text-light);
  border-bottom: 1px solid var(--border-dark);
}

.hero-content {
  max-width: 650px;
}

.badge {
  display: inline-flex;
  align-items: center;
  background-color: rgba(27, 28, 30, 0.04);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
}

.hero .badge {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-dark);
  color: var(--text-light-muted);
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  color: var(--text-light);
}

.hero-title span {
  color: var(--primary);
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-light-muted);
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

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

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-box {
  width: 100%;
  max-width: 400px;
  height: 400px;
  border: 1px solid var(--border-dark);
  background-color: #121214;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2.5rem;
}

.hero-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--primary);
}

.hero-box-stat {
  font-family: var(--font-title);
  font-size: 4rem;
  font-weight: 700;
  color: var(--text-light);
  line-height: 1;
}

.hero-box-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-light-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Trust Bar & Certifications */
.trust-bar {
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
}

.trust-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-title);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.trust-badge::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--primary);
}

@media (max-width: 768px) {
  .trust-flex {
    justify-content: grid;
    grid-template-columns: 1fr 1fr;
  }
}

/* TITLE STYLING */
.section-title-wrap {
  max-width: 800px;
  margin-bottom: 4rem;
}

.section-subtitle {
  color: var(--primary);
  font-family: var(--font-title);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.section-title span {
  color: var(--primary);
}

/* TECHNICAL LIST ROW (REPLACING CARDS TO REDUCE noise) */
.list-container {
  display: flex;
  flex-direction: column;
}

.list-row {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 3rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.list-row:first-of-type {
  border-top: 1px solid var(--border);
}

.list-row-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.list-row-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.list-row-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.list-row-action {
  text-align: right;
}

@media (max-width: 768px) {
  .list-row {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 2rem 0;
  }
  .list-row-action {
    text-align: left;
    margin-top: 1rem;
  }
}

/* TAB SELECTOR FOR PROCESSES & INDUSTRIES */
.tab-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 4rem;
  margin-top: 2rem;
}

@media (max-width: 968px) {
  .tab-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.tab-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  list-style: none;
  background-color: transparent;
  padding: 0;
  margin: 0;
}

.tab-nav li {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
}

.tab-btn {
  width: 100%;
  height: 54px;
  display: flex;
  align-items: center;
  text-align: left;
  padding: 0 1.5rem;
  background-color: var(--bg-white);
  color: var(--text-muted);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  border: 1px solid var(--border);
  border-left: 4px solid var(--border);
}

.tab-btn:hover {
  color: var(--text-main);
  background-color: var(--bg-light-accent);
  border-left-color: var(--primary);
}

.tab-btn.active {
  color: var(--text-light);
  background-color: var(--bg-dark);
  border: 1px solid var(--bg-dark);
  border-left: 4px solid var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.content-box {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-top: 3px solid var(--secondary);
  padding: 3rem;
  min-height: 520px;
}

.content-title {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--text-main);
}

.spec-list {
  list-style: none;
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 576px) {
  .spec-list {
    grid-template-columns: 1fr;
  }
}

.spec-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.spec-item::before {
  content: "[+]";
  font-family: var(--font-mono);
  color: var(--primary);
  font-weight: 700;
}

/* TECHNICAL SHEETS (BLUEPRINT LOOK) */
.tech-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.tech-table th {
  background-color: var(--bg-light-accent);
  font-family: var(--font-title);
  font-weight: 600;
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 2px solid var(--text-main);
  color: var(--text-main);
}

.tech-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}

.tech-table tr:hover td {
  color: var(--text-main);
  background-color: var(--bg-light-accent);
}

/* B2B TECHNICAL CONSULTING PROTOCOL FORM */
.consulting-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 4rem;
  align-items: start;
}

@media (max-width: 1024px) {
  .consulting-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

.info-sidebar {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-top: 3px solid var(--secondary);
  padding: 3rem 2rem;
}

.form-section-title {
  font-family: var(--font-title);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  margin: 1.75rem 0 1.25rem 0;
  letter-spacing: 0.05em;
}

.form-section-title:first-of-type {
  margin-top: 0;
}

.form-group-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

@media (max-width: 576px) {
  .form-group-row {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

.form-group {
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.form-input, .form-select, .form-textarea {
  background-color: var(--bg-light);
  border: 1px solid var(--border);
  border-left: 3px solid var(--secondary);
  padding: 0.85rem 1rem;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.95rem;
  width: 100%;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--border-dark);
  border-left-color: var(--primary);
  background-color: var(--bg-white);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-trust-note {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 1.25rem;
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

/* UNIFIED B2B CONVERSION SECTION (3-STEPS) */
.conversion-section {
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 5rem 0;
}

.conversion-grid {
  display: grid;
  grid-template-columns: 1.8fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 1024px) {
  .conversion-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.conversion-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .conversion-steps {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

.c-step-num {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.25rem;
  display: block;
}

.c-step-title {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.c-step-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* DOWNLOADS PORTAL */
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

@media (max-width: 768px) {
  .download-grid {
    grid-template-columns: 1fr;
  }
}

.download-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-left: 4px solid var(--border);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.download-card:hover {
  border-color: var(--border-dark);
  border-left-color: var(--primary);
}

.download-info {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.file-icon {
  font-size: 1.1rem;
  font-weight: 700;
  font-family: var(--font-mono);
  background-color: rgba(158, 71, 42, 0.05);
  border: 1px solid rgba(158, 71, 42, 0.15);
  color: var(--primary);
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-meta {
  display: flex;
  flex-direction: column;
}

.file-name {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-main);
}

.file-size {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* FOOTER */
footer {
  background-color: var(--bg-darker);
  color: var(--text-light-muted);
  border-top: 1px solid var(--border-dark);
  padding: 5rem 0 2.5rem 0;
  z-index: 2;
  position: relative;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 3.5rem;
}

@media (max-width: 968px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: var(--text-light-muted);
  font-size: 0.9rem;
}

.footer-link:hover {
  color: var(--text-light);
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-light-muted);
}

@media (max-width: 576px) {
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

/* INLINE LINKS & ANCHORS */
.inline-link, p a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid transparent;
}

.inline-link:hover, p a:hover {
  color: var(--primary-hover);
  border-bottom: 1px solid var(--primary);
}