/* Apex Thermal Systems - Global Stylesheet
   Enterprise-grade dark industrial design system
   Mobile-first responsive layout
*/

:root {
  --apex-black: #0b0c0e;
  --apex-dark: #111216;
  --apex-charcoal: #1a1c21;
  --apex-gray: #2b2e35;
  --apex-steel: #3f434d;
  --apex-silver: #8d93a0;
  --apex-light: #d2d6dd;
  --apex-white: #f6f7f9;
  --apex-blue: #0066ff;
  --apex-blue-light: #3b8aff;
  --apex-blue-dark: #004ecc;
  --apex-cyan: #00c2ff;
  --apex-accent: #00e5ff;
  --apex-success: #00d084;
  --apex-warning: #f7b500;
  --apex-danger: #ff3b30;
  --font-headline: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Source Code Pro', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --radius: 0.5rem;
  --radius-lg: 1rem;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --shadow-lg: 0 20px 50px rgba(0,0,0,0.45);
  --transition: 0.2s ease;
  --container: 1240px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--apex-black);
  color: var(--apex-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--apex-blue-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--apex-cyan);
}

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

p {
  margin-bottom: 1rem;
  color: var(--apex-silver);
}

ul, ol {
  margin-left: 1.25rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.5rem;
  color: var(--apex-silver);
}

/* Utilities */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4rem 0;
}

.section-sm {
  padding: 2.5rem 0;
}

.section-lg {
  padding: 6rem 0;
}

.bg-dark {
  background-color: var(--apex-dark);
}

.bg-charcoal {
  background-color: var(--apex-charcoal);
}

.bg-black {
  background-color: var(--apex-black);
}

.bg-gradient-blue {
  background: linear-gradient(135deg, rgba(0,102,255,0.12), rgba(0,0,0,0));
}

.text-center {
  text-align: center;
}

.text-white {
  color: var(--apex-white);
}

.text-silver {
  color: var(--apex-silver);
}

.text-blue {
  color: var(--apex-blue-light);
}

.text-accent {
  color: var(--apex-accent);
}

.text-uppercase {
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.text-small {
  font-size: 0.85rem;
}

.text-large {
  font-size: 1.125rem;
}

.font-mono {
  font-family: var(--font-mono);
}

.label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--apex-cyan);
  margin-bottom: 0.75rem;
}

.divider {
  width: 64px;
  height: 3px;
  background: linear-gradient(90deg, var(--apex-blue), var(--apex-cyan));
  margin: 1.25rem 0;
}

.divider-center {
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-headline);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), background-color var(--transition), border-color var(--transition), color var(--transition);
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background-color: var(--apex-blue);
  color: #fff;
  border-color: var(--apex-blue);
}

.btn-primary:hover {
  background-color: var(--apex-blue-light);
  border-color: var(--apex-blue-light);
  color: #fff;
}

.btn-outline {
  background-color: transparent;
  color: var(--apex-white);
  border-color: rgba(255,255,255,0.35);
}

.btn-outline:hover {
  background-color: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.65);
  color: var(--apex-white);
}

.btn-ghost {
  background-color: transparent;
  color: var(--apex-blue-light);
  border-color: transparent;
  padding-left: 0;
  padding-right: 0;
}

.btn-ghost:hover {
  color: var(--apex-cyan);
}

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11,12,14,0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--transition);
}

.site-header.scrolled {
  background: rgba(11,12,14,0.95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--apex-white);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--apex-blue), var(--apex-cyan));
  border-radius: 0.4rem;
  color: #fff;
  font-weight: 900;
  font-size: 1rem;
}

.logo:hover {
  color: var(--apex-white);
}

.main-nav {
  display: none;
}

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

.main-nav a {
  display: block;
  padding: 0.6rem 0.85rem;
  color: var(--apex-light);
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--apex-white);
  background: rgba(255,255,255,0.06);
}

.header-cta {
  display: none;
}

.mobile-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  color: var(--apex-white);
  cursor: pointer;
}

.mobile-nav {
  position: fixed;
  inset: 72px 0 0 0;
  background: var(--apex-black);
  z-index: 999;
  padding: 1.5rem;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

.mobile-nav.open {
  transform: translateX(0);
}

.mobile-nav ul {
  list-style: none;
  margin: 0;
}

.mobile-nav li {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.mobile-nav a {
  display: block;
  padding: 1rem 0;
  color: var(--apex-light);
  font-size: 1.1rem;
  font-weight: 600;
}

.mobile-nav a:hover {
  color: var(--apex-cyan);
}

.mobile-cta {
  margin-top: 1.5rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 5rem;
  background: radial-gradient(ellipse at 20% 30%, rgba(0,102,255,0.18), transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(0,197,255,0.08), transparent 45%),
              var(--apex-black);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.4;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 1.25rem;
}

.hero-title .accent {
  color: var(--apex-cyan);
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--apex-silver);
  max-width: 640px;
  margin-bottom: 2rem;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 3rem;
}

.stat-card {
  padding: 1.25rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--apex-white);
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--apex-silver);
  margin-top: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-visual {
  position: relative;
}

.hero-image {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-badge {
  position: absolute;
  bottom: -1rem;
  left: -1rem;
  background: var(--apex-charcoal);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
}

.hero-badge-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--apex-silver);
}

.hero-badge-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--apex-white);
}

/* Section headers */
.section-header {
  max-width: 780px;
  margin-bottom: 3rem;
}

.section-header.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 1rem;
}

.section-lead {
  font-size: 1.1rem;
  color: var(--apex-silver);
}

/* Cards */
.card-grid {
  display: grid;
  gap: 1.5rem;
}

.card {
  background: var(--apex-charcoal);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,197,255,0.35);
  box-shadow: var(--shadow);
}

.card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,102,255,0.12);
  border-radius: var(--radius);
  color: var(--apex-cyan);
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.card-text {
  font-size: 0.95rem;
  color: var(--apex-silver);
  margin-bottom: 1.25rem;
}

.card-link {
  font-weight: 600;
  font-size: 0.9rem;
}

/* Product cards */
.product-card {
  display: flex;
  flex-direction: column;
  background: var(--apex-charcoal);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,197,255,0.35);
  box-shadow: var(--shadow);
}

.product-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--apex-gray);
}

.product-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.product-meta {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--apex-cyan);
  margin-bottom: 0.75rem;
}

.product-desc {
  font-size: 0.95rem;
  color: var(--apex-silver);
  margin-bottom: 1.25rem;
  flex: 1;
}

/* Feature list */
.feature-list {
  list-style: none;
  margin: 0;
}

.feature-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--apex-light);
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--apex-cyan);
  font-weight: 700;
}

/* Tabs */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding-bottom: 1rem;
}

.tab-btn {
  padding: 0.6rem 1.1rem;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  color: var(--apex-light);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn:hover {
  border-color: rgba(255,255,255,0.3);
}

.tab-btn.active {
  background: var(--apex-blue);
  border-color: var(--apex-blue);
  color: #fff;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.08);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  min-width: 560px;
}

.data-table th,
.data-table td {
  padding: 0.9rem 1.1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.data-table th {
  background: rgba(0,102,255,0.1);
  color: var(--apex-white);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background: rgba(255,255,255,0.03);
}

/* CTA sections */
.cta-box {
  position: relative;
  padding: 3rem 1.75rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0,102,255,0.16), rgba(0,197,255,0.08));
  border: 1px solid rgba(0,197,255,0.2);
  text-align: center;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.cta-box .section-title {
  position: relative;
  z-index: 1;
}

.cta-box p {
  position: relative;
  z-index: 1;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.75rem;
}

/* Industries */
.industry-card {
  position: relative;
  min-height: 260px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
  background: var(--apex-charcoal);
  border: 1px solid rgba(255,255,255,0.08);
}

.industry-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85), rgba(0,0,0,0.2));
  z-index: 1;
}

.industry-card-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.industry-card-content {
  position: relative;
  z-index: 2;
}

.industry-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}

.industry-card-text {
  font-size: 0.9rem;
  color: var(--apex-light);
  margin: 0;
}

/* Resources */
.resource-card {
  display: flex;
  flex-direction: column;
  background: var(--apex-charcoal);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: var(--transition);
}

.resource-card:hover {
  border-color: rgba(0,197,255,0.3);
  transform: translateY(-3px);
}

.resource-type {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--apex-cyan);
  margin-bottom: 0.75rem;
}

.resource-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.resource-summary {
  font-size: 0.9rem;
  color: var(--apex-silver);
  margin-bottom: 1rem;
  flex: 1;
}

/* Accordion */
.accordion {
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.accordion-item {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.25rem;
  background: transparent;
  border: none;
  color: var(--apex-white);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition);
}

.accordion-header:hover {
  background: rgba(255,255,255,0.04);
}

.accordion-icon {
  width: 22px;
  height: 22px;
  transition: transform var(--transition);
  flex-shrink: 0;
}

.accordion-item.open .accordion-icon {
  transform: rotate(45deg);
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.accordion-item.open .accordion-body {
  max-height: 500px;
}

.accordion-content {
  padding: 0 1.25rem 1.25rem;
  color: var(--apex-silver);
  font-size: 0.95rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--apex-light);
  margin-bottom: 0.4rem;
}

.form-control,
.form-select,
textarea.form-control {
  width: 100%;
  padding: 0.8rem 1rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  color: var(--apex-white);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition), background var(--transition);
}

.form-control:focus,
.form-select:focus,
textarea.form-control:focus {
  outline: none;
  border-color: var(--apex-blue);
  background: rgba(255,255,255,0.07);
}

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

.form-select option {
  background: var(--apex-charcoal);
  color: var(--apex-light);
}

.form-row {
  display: grid;
  gap: 1rem;
}

/* Contact */
.contact-grid {
  display: grid;
  gap: 2.5rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,102,255,0.12);
  border-radius: var(--radius);
  color: var(--apex-cyan);
  flex-shrink: 0;
}

.contact-info-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--apex-silver);
  margin-bottom: 0.2rem;
}

.contact-info-value {
  font-size: 1rem;
  color: var(--apex-white);
  font-weight: 600;
}

/* Footer */
.site-footer {
  background: var(--apex-dark);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 4rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  font-size: 0.95rem;
  color: var(--apex-silver);
  max-width: 320px;
}

.footer-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--apex-white);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: var(--apex-silver);
  font-size: 0.92rem;
}

.footer-links a:hover {
  color: var(--apex-cyan);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.85rem;
  color: var(--apex-silver);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-legal a {
  color: var(--apex-silver);
}

/* Breadcrumbs */
.breadcrumbs {
  font-size: 0.85rem;
  color: var(--apex-silver);
  margin-bottom: 1.5rem;
}

.breadcrumbs a {
  color: var(--apex-silver);
}

.breadcrumbs a:hover {
  color: var(--apex-cyan);
}

.breadcrumbs span {
  color: var(--apex-white);
}

/* Page hero */
.page-hero {
  padding: 9rem 0 4rem;
  background: radial-gradient(ellipse at 80% 0%, rgba(0,102,255,0.14), transparent 50%),
              var(--apex-dark);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.page-hero-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 0.75rem;
}

.page-hero-lead {
  font-size: 1.1rem;
  color: var(--apex-silver);
  max-width: 720px;
}

/* Two column layouts */
.two-col {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.two-col-reverse .text-col {
  order: 2;
}

.two-col-reverse .media-col {
  order: 1;
}

.media-col img,
.media-col picture {
  border-radius: var(--radius-lg);
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* Value props */
.value-prop {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.value-prop-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,102,255,0.12);
  border-radius: var(--radius);
  color: var(--apex-cyan);
  flex-shrink: 0;
}

.value-prop-title {
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

.value-prop-text {
  font-size: 0.92rem;
  color: var(--apex-silver);
  margin: 0;
}

/* Datasheet list */
.datasheet-list {
  list-style: none;
  margin: 0;
}

.datasheet-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.datasheet-list li:last-child {
  border-bottom: none;
}

.datasheet-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.datasheet-title {
  color: var(--apex-white);
  font-weight: 600;
}

.datasheet-meta {
  font-size: 0.8rem;
  color: var(--apex-silver);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 1.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(0,197,255,0.3);
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.5rem;
  top: 0.25rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--apex-cyan);
  border: 3px solid var(--apex-charcoal);
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--apex-cyan);
  margin-bottom: 0.25rem;
}

.timeline-title {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.timeline-text {
  font-size: 0.95rem;
  color: var(--apex-silver);
  margin: 0;
}

/* Responsive */
@media (min-width: 640px) {
  .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .card-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 768px) {
  .section {
    padding: 5rem 0;
  }

  .section-lg {
    padding: 7rem 0;
  }

  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .two-col {
    grid-template-columns: 1fr 1fr;
  }

  .card-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .card-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 0.9fr 1.1fr;
  }

  .form-row {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }

  .main-nav {
    display: block;
  }

  .header-cta {
    display: block;
  }

  .mobile-menu-toggle {
    display: none;
  }

  .mobile-nav {
    display: none;
  }

  .card-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .industry-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Utilities */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-1 { margin-top: 0.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-3 { margin-bottom: 1.5rem; }
.pt-0 { padding-top: 0; }
.pb-0 { padding-bottom: 0; }

/* Print */
@media print {
  .site-header, .site-footer, .mobile-nav, .btn {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
}