:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-accent: #334155;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-overlay: rgba(15, 23, 42, 0.95);
  
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --text-accent: #f59e0b;
  
  --border-primary: #374151;
  --border-accent: #f59e0b;
  --border-light: rgba(255, 255, 255, 0.06);
  
  --accent-primary: #f59e0b;
  --accent-secondary: #d97706;
  --accent-hover: #fbbf24;
  
  --gradient-primary: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --gradient-secondary: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
  --gradient-overlay: linear-gradient(180deg, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.85) 100%);
  
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.4);
  --shadow-accent: 0 4px 15px rgba(245, 158, 11, 0.25);
  --shadow-glow: 0 0 20px rgba(245, 158, 11, 0.2);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-accent: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-overlay: rgba(248, 250, 252, 0.95);
  
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-accent: #d97706;
  
  --border-primary: #cbd5e1;
  --border-accent: #d97706;
  --border-light: rgba(0, 0, 0, 0.08);
  
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.15);
  --shadow-accent: 0 4px 15px rgba(217, 119, 6, 0.15);
}

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

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

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin-bottom: 1rem;
  line-height: 1.2;
  font-weight: 700;
  color: var(--text-primary);
}

h1 {
  font-size: 3.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: all var(--transition-normal);
}

a:hover {
  color: var(--accent-secondary);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  font-family: inherit;
  font-size: 1rem;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--accent-primary);
  position: relative;
  overflow: hidden;
}

.btn-secondary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  transition: left var(--transition-normal);
  z-index: -1;
}

.btn-secondary:hover {
  color: white;
  border-color: transparent;
}

.btn-secondary:hover::after {
  left: 0;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-primary);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  height: var(--header-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-light);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.logo img {
  width: 45px;
  height: 45px;
  filter: drop-shadow(var(--shadow-glow));
}

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

.menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.menu a {
  color: var(--text-primary);
  font-weight: 500;
  padding: 0.5rem;
  position: relative;
  transition: all var(--transition-normal);
}

.menu a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: all var(--transition-normal);
  transform: translateX(-50%);
}

.menu a:hover::after,
.menu .active a::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.icon-bar {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px 0;
  background: var(--gradient-primary);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

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

.theme-toggle,
.header-search {
  background: var(--bg-card);
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
}

.theme-toggle:hover,
.header-search:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}

.hero {
  padding: var(--section-spacing) 0;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 20%, rgba(255, 107, 107, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(78, 205, 196, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

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

.hero-text {
  flex: 1;
  animation: fadeInUp 1s ease-out;
}

.hero-image {
  flex: 1;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 1.5s ease-out;
}

.hero-title {
  margin-bottom: 1.5rem;
  font-size: 3.5rem;
  line-height: 1.1;
}

.hero-description {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  color: var(--text-secondary);
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.5rem;
}

.card {
  background: var(--gradient-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  padding: 2.5rem;
  transition: all var(--transition-normal);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--transition-slow);
}

.card:hover::before {
  left: 100%;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-accent);
}

.card-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.card-title {
  margin-bottom: 1rem;
}

.card-description {
  margin-bottom: 1.5rem;
}

.card-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.5rem 0;
}

.card-features span {
  background: var(--gradient-primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 2rem;
  box-shadow: var(--shadow-accent);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  transition: all var(--transition-normal);
}

.card-link:hover {
  gap: 0.75rem;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  position: relative;
  display: inline-block;
  margin-bottom: 1rem;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: var(--gradient-primary);
}

.section-description {
  max-width: 700px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.about {
  padding: var(--section-spacing) 0;
  background: var(--bg-secondary);
  position: relative;
}

.about-content {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.about-image {
  flex: 1;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-text {
  flex: 1;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2.5rem 0;
}

.about-feature {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-card);
  border-radius: var(--border-radius);
  transition: transform var(--transition-normal);
}

.about-feature:hover {
  transform: translateX(5px);
}

.about-feature svg {
  color: var(--accent-primary);
  width: 24px;
  height: 24px;
}

.technology {
  padding: var(--section-spacing) 0;
}

.tech-content {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.tech-image {
  flex: 1;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.tech-text {
  flex: 1;
}

.tech-specs {
  margin-top: 2.5rem;
}

.spec-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: var(--border-radius);
  transition: transform var(--transition-normal);
}

.spec-item:hover {
  transform: translateX(10px);
}

.spec-icon {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-glow);
}

.lens-collection {
  padding: var(--section-spacing) 0;
  background: var(--bg-secondary);
}

.lens-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.5rem;
}

.lens-card {
  background: var(--gradient-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid var(--border-light);
}

.lens-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-accent);
}

.lens-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
}

.lens-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.lens-info {
  padding: 2rem;
}

.lens-name {
  margin-bottom: 1rem;
}

.lens-description {
  margin-bottom: 1.5rem;
}

.lens-specs {
  list-style: none;
  margin-bottom: 2rem;
}

.lens-specs li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.lens-specs li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 8px;
  height: 8px;
  background: var(--gradient-primary);
  border-radius: 50%;
}

.testimonials {
  padding: var(--section-spacing) 0;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2.5rem;
}

.testimonial {
  background: var(--gradient-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  padding: 2.5rem;
  transition: all var(--transition-normal);
  border: 1px solid var(--border-light);
}

.testimonial:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-accent);
}

.testimonial-text {
  position: relative;
  margin-bottom: 2rem;
  font-style: italic;
}

.testimonial-text::before {
  content: '"';
  font-size: 4rem;
  color: var(--accent-primary);
  opacity: 0.3;
  position: absolute;
  top: -1.5rem;
  left: -1rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.author-image {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid transparent;
  background: var(--gradient-primary) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

.author-info h4 {
  margin-bottom: 0.25rem;
}

.author-title {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.cta {
  padding: var(--section-spacing) 0;
  background: var(--bg-accent);
  text-align: center;
  position: relative;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0.1;
  z-index: 1;
}

.cta > .container {
  position: relative;
  z-index: 2;
}

.cta-title {
  margin-bottom: 1.5rem;
}

.cta-description {
  max-width: 700px;
  margin: 0 auto 3rem;
  font-size: 1.2rem;
}

.site-footer {
  background: var(--bg-primary);
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border-light);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-info {
  max-width: 400px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.contact-info {
  margin: 2rem 0;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
  transition: transform var(--transition-normal);
}

.contact-item:hover {
  transform: translateX(5px);
}

.contact-item svg {
  color: var(--accent-primary);
  margin-top: 3px;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.social-links a:hover {
  background: var(--gradient-primary);
  color: white;
  transform: translateY(-3px);
}

.footer-links h3 {
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}

.footer-links h3::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--gradient-primary);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 1rem;
  transition: transform var(--transition-normal);
}

.footer-links li:hover {
  transform: translateX(5px);
}

.footer-links a {
  color: var(--text-primary);
  transition: color var(--transition-normal);
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 1rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-primary);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: inherit;
  transition: all var(--transition-normal);
  margin-bottom: 1.5rem;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-accent);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-primary);
  color: var(--text-secondary);
}

#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  z-index: 99;
  box-shadow: var(--shadow-glow);
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  transform: scale(1.1);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (max-width: 768px) {
  :root {
    --section-spacing: 4rem;
    --header-height: 70px;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    flex-direction: column;
    background: var(--bg-primary);
    backdrop-filter: blur(20px);
    padding: 1rem 0;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
  }

  .menu.show {
    max-height: 400px;
  }

  .menu a {
    display: block;
    padding: 1rem 1.5rem;
    width: 100%;
    border-bottom: 1px solid var(--border-light);
  }

  .menu-toggle {
    display: block;
  }

  .menu-toggle[aria-expanded="true"] .icon-bar:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] .icon-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .menu-toggle[aria-expanded="true"] .icon-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero-content,
  .about-content,
  .tech-content {
    flex-direction: column;
    text-align: center;
  }

  .card-grid,
  .lens-grid,
  .testimonial-grid {
    grid-template-columns: 1fr;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .hero-buttons {
    justify-content: center;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-links h3::after {
    left: 50%;
    transform: translateX(-50%);
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .container {
    padding: 0 1rem;
  }

  .card,
  .testimonial {
    padding: 1.5rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
  }
}

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

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

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

.mb-0 {
  margin-bottom: 0;
}

.mt-1 {
  margin-top: 1rem;
}

.mt-2 {
  margin-top: 2rem;
}

.mb-1 {
  margin-bottom: 1rem;
}

.mb-2 {
  margin-bottom: 2rem;
}

.p-1 {
  padding: 1rem;
}

.p-2 {
  padding: 2rem;
}

.d-flex {
  display: flex;
}

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

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.flex-1 {
  flex: 1;
}

.w-100 {
  width: 100%;
}

.h-100 {
  height: 100%;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-overlay);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  backdrop-filter: blur(5px);
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

.feature-transition {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1000;
  width: 90%;
  max-width: 1000px;
  background: var(--bg-primary);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
}

.feature-transition.active {
  display: block;
  animation: fadeIn 0.5s ease-out;
}

.close-transition {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.close-transition:hover {
  background: var(--gradient-primary);
  color: white;
  transform: rotate(90deg);
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--gradient-primary);
  color: white;
  padding: 8px;
  z-index: 100;
  transition: top 0.3s ease;
  border-radius: 0 0 4px 0;
}

.skip-link:focus {
  top: 0;
}

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