:root {
  color-scheme: dark;
  --bg: #06121d;
  --surface: #0f1d2e;
  --surface-2: #13253a;
  --text: #f5f8ff;
  --muted: #b8c6d4;
  --accent: #f8b500;
  --accent-2: #82c4ff;
  --radius: 24px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, rgba(248, 181, 0, 0.14), transparent 32%),
    linear-gradient(180deg, #081522 0%, #081319 100%);
  color: var(--text);
  min-height: 100vh;
}

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

/* Navigation Bar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(6, 18, 29, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem 0;
}

.navbar__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__brand {
  flex-shrink: 0;
}

.navbar__logo {
  display: inline-flex;
  align-items: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.navbar__logo:hover {
  color: var(--accent-2);
}

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

.navbar__menu a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
  font-size: 0.95rem;
}

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

.navbar__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
  padding: 0;
}

.navbar__toggle span {
  display: block;
  width: 1.25rem;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.navbar__toggle span + span {
  margin-top: 0.28rem;
}

.navbar__toggle.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.navbar__toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.navbar__toggle.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.navbar__menu .dropdown-menu {
  background: rgba(15, 29, 46, 0.98);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
  min-width: 14rem;
  padding: 0.35rem;
}

.navbar__menu .dropdown-item {
  border-radius: 6px;
  color: var(--muted);
  padding: 0.65rem 0.75rem;
}

.navbar__menu .dropdown-item:hover,
.navbar__menu .dropdown-item:focus {
  background: rgba(248, 181, 0, 0.12);
  color: var(--accent);
}

@media (max-width: 640px) {
  .navbar__menu {
    gap: 1rem;
    font-size: 0.9rem;
  }
  
  .navbar__logo {
    font-size: 1rem;
  }
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  padding: 4rem 0 3rem;
  background: radial-gradient(circle at top left, rgba(248, 181, 0, 0.16), transparent 30%),
    rgba(5, 12, 22, 0.96);
}

.hero__content {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr 360px;
  align-items: center;
}

/* Hero product image */
.product-hero img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 12px 30px rgba(0,0,0,0.45);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.02));
}

@media (max-width: 720px) {
  .hero__content {
    grid-template-columns: 1fr;
  }
  .product-hero {
    order: -1;
  }
}

.brand {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.logo {
  width: 110px;
  height: auto;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  padding: 0.65rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 1.05rem;
  font-weight: 700;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.4rem, 3.5vw, 4rem);
  line-height: 1.02;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.75rem;
  border-radius: 999px;
  background: var(--accent);
  color: #07111f;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 18px 30px rgba(248, 181, 0, 0.2);
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 22px 40px rgba(248, 181, 0, 0.24);
}

.button--secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.section {
  padding: 4rem 0;
}

.section--dark {
  background: var(--surface);
}

.section--light {
  background: rgba(255,255,255,0.03);
}

.section-action {
  margin-top: 2rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  padding: 1.75rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}

.card h3 {
  margin-top: 0;
  color: var(--text);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-list > div {
  padding: 1.75rem;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}

.collapsible-content {
  margin-top: 1.5rem;
}

.feature-list h3 {
  margin-top: 0;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.cert-grid figure {
  margin: 0;
  background: rgba(255,255,255,0.02);
  padding: 0.5rem;
  border-radius: 12px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.04);
}

.cert-grid img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.cert-grid figcaption {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.contact-block {
  display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 2rem;
    padding: 2rem 2rem;
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(248, 181, 0, 0.14), rgba(255,255,255,0.05));
  }

  .contact-form {
    display: grid;
    width: 100%;
    max-width: 620px;
    gap: 1rem;
  }

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

  .contact-message {
    margin: 0;
    font-size: 0.95rem;
    color: var(--accent-2);
  }

  .contact-form label {
    display: grid;
    gap: 0.5rem;
    color: var(--text);
    font-weight: 600;
  }

  .contact-form input,
  .contact-form textarea {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    background: rgba(255,255,255,0.05);
    color: var(--text);
    padding: 1rem;
    font: inherit;
  }

  .contact-form input::placeholder,
  .contact-form textarea::placeholder {
    color: rgba(255, 255, 255, 0.55);
  }

  .contact-form button {
    justify-self: start;
    width: auto;
  }
  .contact-block > div {
    margin-bottom: 0.5rem;
  }

  /* Products Menu Styles */
  .products-menu {
    display: grid;
    gap: 2rem;
    margin-top: 2rem;
  }

  .product-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    padding: 2rem;
    transition: all 0.3s ease;
  }

  .product-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.24);
    transform: translateY(-2px);
  }

  .product-item h3 {
    margin: 0 0 0.5rem;
    color: var(--accent);
    font-size: 1.5rem;
  }

  .product-item > p {
    margin: 0.5rem 0;
    color: var(--muted);
  }

  .product-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 1rem 0;
    font-size: 0.9rem;
  }

  .product-specs span {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(248, 181, 0, 0.1);
    border-radius: 999px;
    color: var(--accent-2);
  }

  .product-item .button {
    margin-top: 1rem;
  }

  /* Product Grid for multi-column layouts */
  .product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
  }

  .product-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
  }

  .product-card h3 {
    margin: 0 0 0.5rem;
    color: var(--accent);
  }

  .product-card p {
    margin: 0.5rem 0;
  }

  .product-desc {
    font-size: 0.9rem;
    color: var(--muted);
  }

  /* Breadcrumb Navigation */
  .breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-2);
    text-decoration: none;
    font-size: 0.95rem;
    margin-bottom: 1rem;
    transition: color 0.2s ease;
  }

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

  /* Technical Specs Tables */
  .specs-table {
    display: grid;
    gap: 2rem;
    margin-top: 2rem;
  }

  .table-section {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    padding: 1.5rem;
  }

  .table-section h3 {
    margin: 0 0 1rem;
    color: var(--accent);
  }

  .table-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .table-row:last-child {
    border-bottom: none;
  }

  .table-label {
    font-weight: 600;
    color: var(--text);
  }

  .table-value {
    color: var(--muted);
  }

  .specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
  }

  .spec-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    padding: 1.5rem;
  }

  .spec-item h3 {
    margin: 0 0 0.5rem;
    color: var(--accent);
  }

  .spec-item p {
    margin: 0;
    font-size: 0.95rem;
  }

  /* Note styling */
  .note {
    background: rgba(248, 181, 0, 0.1);
    border-left: 4px solid var(--accent);
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 2rem;
  }

  .note p {
    margin: 0.5rem 0;
  }

  .note small {
    color: var(--muted);
  }

  /* Contact Links */
  .contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1.5rem;
  }

  .button--secondary {
    background: rgba(248, 181, 0, 0.15);
    color: var(--accent);
    border: 1px solid var(--accent);
    box-shadow: none;
  }

.button--secondary:hover {
    background: rgba(248, 181, 0, 0.25);
  }

  .scroll-top {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 1100;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border: 1px solid rgba(7, 17, 31, 0.2);
    border-radius: 50%;
    background: var(--accent);
    color: #07111f;
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 18px 34px rgba(0, 0, 0, 0.3);
    opacity: 0;
    pointer-events: none;
    transform: translateY(0.75rem);
    transition: opacity 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  }

  .scroll-top.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .scroll-top:hover,
  .scroll-top:focus-visible {
    box-shadow: 0 22px 44px rgba(248, 181, 0, 0.25);
    transform: translateY(-2px);
  }

  .scroll-top:focus-visible {
    outline: 3px solid var(--accent-2);
    outline-offset: 3px;
  }

  /* Certification Grid */
  .cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
  }

  .cert-grid figure {
    margin: 0;
    text-align: center;
  }

  .cert-grid img {
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    max-height: 250px;
    margin-bottom: 0.5rem;
  }

  .cert-grid figcaption {
    color: var(--muted);
    font-size: 0.9rem;
  }

  .footer {
  padding: 1.5rem 0 2rem;
}

.footer__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 720px) {
  .navbar {
    padding: 0.75rem 0;
  }
  .navbar__content {
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  .navbar__toggle {
    display: inline-flex;
  }
  .navbar__menu {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
    padding: 0.75rem 0 0.25rem;
  }
  .navbar__menu.is-open {
    display: flex;
  }
  .navbar__menu li {
    width: 100%;
  }
  .navbar__menu a {
    display: flex;
    width: 100%;
    justify-content: space-between;
    padding: 0.75rem 0;
    font-size: 1rem;
  }
  .navbar__menu .dropdown-menu {
    position: static !important;
    transform: none !important;
    width: 100%;
    margin: 0.25rem 0 0.5rem;
  }
  .navbar__menu .dropdown-item {
    padding: 0.7rem 0.75rem;
  }
  .hero {
    padding-top: 2.5rem;
  }
  .hero__content,
  .contact-block,
  .footer__content {
    display: block;
  }
  .brand {
    flex-direction: column;
    align-items: flex-start;
  }
  .contact-block {
    padding: 1.5rem;
  }
  .contact-form {
    max-width: none;
    width: 100%;
  }
  .contact-block > div {
    margin-bottom: 1rem;
  }
  .footer__content {
    text-align: center;
  }
  .scroll-top {
    right: 1rem;
    bottom: 1rem;
    width: 2.75rem;
    height: 2.75rem;
  }
}