/* ============================================
   APEX THERMAL SYSTEMS — GLOBAL STYLES
   Enterprise-grade corporate website
   Dark gray, black, white, blue palette
   ============================================ */

/* CSS Variables */
:root {
  --color-bg: #0b0c10;
  --color-bg-alt: #15171d;
  --color-bg-card: #1a1d26;
  --color-bg-light: #222633;
  --color-border: #2a2e3b;
  --color-border-light: #3a3f50;
  --color-text: #e0e2e8;
  --color-text-muted: #8a8f9e;
  --color-text-dark: #6b7280;
  --color-white: #ffffff;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-light: #3b82f6;
  --color-accent-glow: rgba(37, 99, 235, 0.25);
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-width: 1280px;
  --header-height: 72px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

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

a:hover {
  color: var(--color-white);
}

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

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  color: var(--color-text-muted);
  max-width: 65ch;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-accent-light), #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-muted { color: var(--color-text-muted); }
.text-white { color: var(--color-white); }
.text-accent { color: var(--color-accent-light); }

.label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent-light);
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  margin-bottom: 0.75rem;
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* Grid */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 3rem 0; }
}

/* Flex */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }

/* Header / Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(11, 12, 16, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-white);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-white);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-desktop a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--color-white);
}

.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: var(--transition);
}

.nav-desktop a:hover::after,
.nav-desktop a.active::after {
  width: 100%;
}

.nav-cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
}

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

.nav-cta::after { display: none !important; }

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
}

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem;
  flex-direction: column;
  gap: 1rem;
  z-index: 999;
}

.nav-mobile a {
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 500;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.nav-mobile a:last-child {
  border-bottom: none;
}

@media (max-width: 1024px) {
  .nav-desktop { display: none; }
  .mobile-menu-btn { display: block; }
  .nav-mobile.open { display: flex; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--color-accent-glow);
}

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

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

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  color: var(--color-white);
  background: var(--color-bg-light);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1rem;
}

/* Cards */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--color-border-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-accent-light);
  font-size: 1.25rem;
}

.card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.125rem;
}

.card p {
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Product Cards */
.product-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.product-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.product-card-image {
  aspect-ratio: 16/10;
  background: var(--color-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-card-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37,99,235,0.05), transparent);
}

.product-card-image svg,
.product-card-image .placeholder-icon {
  width: 64px;
  height: 64px;
  color: var(--color-accent);
  opacity: 0.6;
  z-index: 1;
}

.product-card-body {
  padding: 1.5rem;
}

.product-card-body h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.product-card-body p {
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.product-card-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--color-text-dark);
  font-family: var(--font-mono);
}

/* Hero */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
              var(--color-bg);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero .label {
  margin-bottom: 1.5rem;
  display: inline-block;
}

.hero h1 {
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero p {
  font-size: 1.15rem;
  margin-bottom: 2rem;
  color: var(--color-text-muted);
}

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

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .hero-stats { gap: 1.5rem; flex-wrap: wrap; }
  .hero-stat-value { font-size: 1.5rem; }
}

/* Feature Row */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.feature-row.reverse {
  direction: rtl;
}

.feature-row.reverse > * {
  direction: ltr;
}

.feature-row-visual {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.feature-row-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37,99,235,0.06), transparent);
}

.feature-row-visual .placeholder-icon {
  width: 80px;
  height: 80px;
  color: var(--color-accent);
  opacity: 0.4;
}

.feature-row-content h3 {
  margin-bottom: 1rem;
}

.feature-row-content p {
  margin-bottom: 1.5rem;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.feature-list li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .feature-row {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Spec Table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.spec-table th,
.spec-table td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.spec-table th {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-bg-alt);
}

.spec-table td {
  color: var(--color-text);
}

.spec-table tr:hover td {
  background: var(--color-bg-light);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0.25rem;
  background: var(--color-bg-alt);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.625rem 1.25rem;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.tab-btn:hover {
  color: var(--color-white);
}

.tab-btn.active {
  background: var(--color-bg-light);
  color: var(--color-white);
}

.tab-panel {
  display: none;
}

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

/* Accordion */
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

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

.accordion-header:hover {
  background: var(--color-bg-light);
}

.accordion-header .icon {
  transition: var(--transition);
  color: var(--color-accent-light);
}

.accordion-item.open .accordion-header .icon {
  transform: rotate(180deg);
}

.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(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--color-accent), #1e40af);
  border-radius: var(--radius-xl);
  padding: 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1), transparent 50%);
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: 1rem;
  position: relative;
}

.cta-section p {
  color: rgba(255,255,255,0.8);
  margin: 0 auto 2rem;
  position: relative;
}

.cta-section .btn-secondary {
  border-color: rgba(255,255,255,0.3);
  color: var(--color-white);
  position: relative;
}

.cta-section .btn-secondary:hover {
  background: var(--color-white);
  color: var(--color-accent);
  border-color: var(--color-white);
}

/* Footer */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
}

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

.footer-brand p {
  margin: 1rem 0;
  font-size: 0.9rem;
}

.footer-brand .logo {
  margin-bottom: 0.5rem;
}

.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  color: var(--color-white);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

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

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

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

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 1.5rem 0;
  font-size: 0.8rem;
  color: var(--color-text-dark);
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

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

.breadcrumbs span {
  color: var(--color-text-dark);
}

/* Page Header */
.page-header {
  padding: calc(var(--header-height) + 3rem) 0 3rem;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  margin-bottom: 0.75rem;
}

.page-header p {
  font-size: 1.1rem;
  max-width: 700px;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.9rem;
  transition: var(--transition);
}

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

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

/* Datasheet Card */
.datasheet-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

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

.datasheet-icon {
  width: 48px;
  height: 48px;
  background: var(--color-bg-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-danger);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.datasheet-info h4 {
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.datasheet-info p {
  font-size: 0.8rem;
  color: var(--color-text-dark);
}

.datasheet-actions {
  margin-left: auto;
  display: flex;
  gap: 0.5rem;
}

/* Industry Card */
.industry-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.industry-card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(to top, rgba(11,12,16,0.95), transparent);
}

.industry-card h3 {
  margin-bottom: 0.5rem;
}

.industry-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Stats Bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  padding: 3rem 0;
}

.stat-item {
  text-align: center;
  padding: 1.5rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.stat-item .value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
}

.stat-item .label {
  margin-top: 0.75rem;
  display: block;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stat-item .value { font-size: 1.75rem; }
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 0.25rem;
  width: 14px;
  height: 14px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 3px solid var(--color-bg);
}

.timeline-item h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.timeline-item .year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent-light);
  margin-bottom: 0.5rem;
  display: block;
}

.timeline-item p {
  font-size: 0.9rem;
}

/* Contact Grid */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 3rem;
}

.contact-info-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.contact-info-card h4 {
  margin-bottom: 1rem;
  font-size: 1rem;
}

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

.contact-info-item .icon {
  width: 40px;
  height: 40px;
  background: var(--color-bg-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-light);
  flex-shrink: 0;
}

.contact-info-item div strong {
  color: var(--color-white);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 0.25rem;
}

.contact-info-item div span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

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

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-dark);
}

/* Selection */
::selection {
  background: var(--color-accent);
  color: var(--color-white);
}

/* Utility */
.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-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.pt-8 { padding-top: 2rem; }
.pb-8 { padding-bottom: 2rem; }
.text-center { text-align: center; }
.w-full { width: 100%; }