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

:root {
  --primary: #0a2463;
  --primary-light: #1e3a8a;
  --accent: #d32f2f;
  --accent-light: #ef5350;
  --gold: #f9a825;
  --white: #ffffff;
  --light: #f5f7fa;
  --gray: #6b7280;
  --dark: #1a1a2e;
  --shadow: 0 4px 24px rgba(10, 36, 99, 0.10);
  --shadow-lg: 0 8px 40px rgba(10, 36, 99, 0.15);
  --radius: 12px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
  background: var(--white);
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Navbar ─── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(10, 36, 99, 0.08);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo .logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.nav-logo .logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
}

.nav-logo .logo-text span {
  display: block;
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--gray);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--dark);
  position: relative;
  transition: var(--transition);
}

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

.nav-links a:hover {
  color: var(--primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--accent) !important;
  color: var(--white) !important;
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600 !important;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--accent-light) !important;
  transform: translateY(-1px);
}

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

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  width: 24px;
  height: 2.5px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ─── Hero ─── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, #16205c 100%);
  overflow: hidden;
  padding-top: 72px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(211, 47, 47, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(249, 168, 37, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  color: var(--white);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--gold);
  border-radius: 50%;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent-light), var(--gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.85;
  max-width: 500px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--white);
  padding: 14px 32px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(211, 47, 47, 0.3);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
  padding: 14px 32px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: var(--transition);
  cursor: pointer;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.hero-image {
  position: relative;
}

.hero-image img {
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

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

.hero-stat .number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gold);
}

.hero-stat .label {
  font-size: 0.8rem;
  opacity: 0.7;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ─── Section shared ─── */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 600px;
  margin: 0 auto;
}

/* ─── About ─── */
.about {
  background: var(--light);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-content h3 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
}

.about-content p {
  color: var(--gray);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.about-feature .icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.1rem;
}

.about-feature h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.about-feature p {
  font-size: 0.82rem;
  margin-bottom: 0;
}

.about-image {
  position: relative;
}

.about-image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.about-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--primary);
  color: var(--white);
  padding: 20px 28px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.about-badge .number {
  font-size: 2rem;
  font-weight: 800;
  display: block;
}

.about-badge .text {
  font-size: 0.75rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ─── Products ─── */
.products {
  background: var(--white);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid rgba(10, 36, 99, 0.06);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.product-card .card-image {
  height: 220px;
  overflow: hidden;
}

.product-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.product-card .card-body {
  padding: 24px;
}

.product-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.product-card p {
  font-size: 0.88rem;
  color: var(--gray);
  line-height: 1.6;
  margin-bottom: 16px;
}

.product-card .specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.spec-tag {
  display: inline-block;
  background: var(--light);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
}

/* ─── Why Us ─── */
.why-us {
  background: linear-gradient(135deg, var(--primary) 0%, #16205c 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.why-us::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(211, 47, 47, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.why-us .section-tag {
  color: var(--gold);
}

.why-us .section-title {
  color: var(--white);
}

.why-us .section-desc {
  color: rgba(255, 255, 255, 0.7);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}

.why-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}

.why-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.why-card .icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.5rem;
}

.why-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.why-card p {
  font-size: 0.85rem;
  opacity: 0.7;
  line-height: 1.6;
}

/* ─── Standards / Fire Rating ─── */
.standards {
  background: var(--light);
}

.standards-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.standards-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  font-size: 0.92rem;
}

.standards-table thead {
  background: var(--primary);
  color: var(--white);
}

.standards-table th {
  padding: 16px 20px;
  text-align: left;
  font-weight: 600;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.standards-table td {
  padding: 14px 20px;
  border-bottom: 1px solid rgba(10, 36, 99, 0.06);
  color: var(--dark);
}

.standards-table tbody tr:hover {
  background: rgba(10, 36, 99, 0.02);
}

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

.standards-note {
  margin-top: 24px;
  padding: 20px 24px;
  background: var(--white);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: var(--shadow);
}

.standards-note p {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.7;
}

/* ─── Gallery ─── */
.gallery {
  background: var(--white);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 1;
  cursor: pointer;
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10, 36, 99, 0.4));
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item:hover::after {
  opacity: 1;
}

.gallery-item.tall {
  grid-row: span 2;
}

/* ─── Contact ─── */
.contact {
  background: var(--light);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.contact-info > p {
  color: var(--gray);
  margin-bottom: 32px;
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.contact-card:hover {
  transform: translateX(4px);
}

.contact-card .icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.1rem;
}

.contact-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.contact-card p {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.5;
}

.contact-form-wrap {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}

.contact-form-wrap h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid rgba(10, 36, 99, 0.12);
  border-radius: 8px;
  font-size: 0.92rem;
  font-family: inherit;
  transition: var(--transition);
  background: var(--light);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 36, 99, 0.08);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.btn-submit {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: var(--white);
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-submit:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(211, 47, 47, 0.3);
}

/* ─── Footer ─── */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.footer-logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.footer-brand .logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  color: var(--white);
}

.footer h4 {
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer ul li {
  margin-bottom: 10px;
}

.footer ul li a {
  font-size: 0.88rem;
  transition: var(--transition);
}

.footer ul li a:hover {
  color: var(--white);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

/* ─── Scroll Animations ─── */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Modal (lightbox) ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  cursor: pointer;
}

.modal-overlay.active {
  display: flex;
}

.modal-overlay img {
  max-width: 90%;
  max-height: 90vh;
  border-radius: var(--radius);
  box-shadow: 0 0 80px rgba(0, 0, 0, 0.5);
}

.modal-close {
  position: absolute;
  top: 24px;
  right: 32px;
  color: var(--white);
  font-size: 2rem;
  cursor: pointer;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  border: none;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--accent);
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    order: 1;
  }

  .hero-image {
    order: 0;
    max-width: 500px;
    margin: 0 auto;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
  }

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

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

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

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

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

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    transition: var(--transition);
    z-index: 999;
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .hamburger {
    display: flex;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .section-title {
    font-size: 2rem;
  }

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

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

  .about-image {
    order: -1;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .why-grid {
    grid-template-columns: 1fr;
  }

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

  .gallery-item.tall {
    grid-row: span 1;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.9rem;
  }

  section {
    padding: 64px 0;
  }

  .hero-stats {
    gap: 20px;
  }

  .hero-stat .number {
    font-size: 1.5rem;
  }

  .contact-form-wrap {
    padding: 24px;
  }
}