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

:root {
  --primary: #f97316;
  --primary-dark: #ea580c;
  --white: #ffffff;
  --black: #000000;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --radius: 12px;
  --transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Montserrat', sans-serif;
  color: var(--gray-700);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  font-family: inherit;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-outline:hover {
  background: var(--white);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
  padding: 8px 20px;
  font-size: 0.85rem;
}
.btn-secondary:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-full { width: 100%; }

/* Progress Bar */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--primary);
  z-index: 1001;
  transition: width 0.1s linear;
  width: 0;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: 2px;
  display: inline-flex;
  align-items: center;
}
.logo img {
  height: 40px;
  width: auto;
}
.logo-footer img {
  height: 36px;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}
.logo span { color: var(--primary); }

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-700);
  transition: var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-phone {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.nav-cta {
  padding: 8px 20px;
  font-size: 0.8rem;
}

/* Language Switcher */
.lang-switch {
  display: flex;
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  overflow: hidden;
}

.lang-btn {
  padding: 6px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: var(--white);
  color: var(--gray-500);
  transition: var(--transition);
}
.lang-btn.active {
  background: var(--primary);
  color: var(--white);
}
.lang-btn:hover:not(.active) {
  background: var(--gray-100);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  transition: var(--transition);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: #1a1a2e;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0.55) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: 2px;
}

.hero-content p {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  line-height: 1.6;
}

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

/* Section Labels */
.section-label {
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 48px;
}

/* Differentiators */
.differentiators {
  padding: 80px 0;
  background: var(--white);
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.diff-card {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius);
  transition: var(--transition);
  border: 1px solid var(--gray-100);
}
.diff-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.diff-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  color: var(--primary);
}

.diff-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.diff-card p {
  color: var(--gray-500);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* About */
.about {
  padding: 100px 0;
  background: var(--gray-50);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-img-placeholder {
  width: 100%;
  height: 450px;
  background: var(--gray-200);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--gray-400);
}

.about-img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow-xl);
}

.about-content h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 20px;
  line-height: 1.3;
}

.about-content p {
  color: var(--gray-600);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-stats {
  display: flex;
  gap: 40px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-200);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--gray-500);
  font-weight: 600;
}

/* Products */
.products {
  padding: 100px 0;
  background: var(--white);
  text-align: center;
}

.product-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 10px 24px;
  border: 2px solid var(--gray-200);
  border-radius: 50px;
  background: var(--white);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--gray-600);
  cursor: pointer;
  transition: var(--transition);
}
.tab-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  text-align: left;
}

.product-card {
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  background: var(--white);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.product-img-placeholder {
  height: 220px;
  background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
}

.product-img {
  height: 220px;
  overflow: hidden;
}
.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.product-card:hover .product-img img {
  transform: scale(1.05);
}

.product-info {
  padding: 24px;
}

.product-info h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.product-info p {
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-bottom: 16px;
  line-height: 1.6;
}

/* Projects */
.projects {
  padding: 100px 0;
  background: var(--gray-50);
  text-align: center;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.project-card {
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.project-card:hover { transform: scale(1.03); }

.project-img-placeholder {
  height: 260px;
  background: linear-gradient(135deg, var(--gray-200), var(--gray-100));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--gray-400);
}

.project-img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.project-card { overflow: hidden; }
.project-card:hover .project-img { transform: scale(1.06); }

/* FAQ */
.faq {
  padding: 100px 0;
  background: var(--white);
  text-align: center;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
  text-align: left;
}

.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-800);
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }

.faq-question svg {
  flex-shrink: 0;
  transition: transform 0.3s ease;
  color: var(--primary);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 24px 18px;
  color: var(--gray-600);
  line-height: 1.7;
}

/* Contact */
.contact {
  padding: 100px 0;
  background: var(--gray-50);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 32px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-item svg {
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-item strong {
  display: block;
  font-size: 0.85rem;
  color: var(--gray-800);
  margin-bottom: 2px;
}

.contact-item p {
  color: var(--gray-600);
  font-size: 0.9rem;
}

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

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  transition: var(--transition);
}
.social-link:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

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

.form-group {
  margin-bottom: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--gray-700);
  transition: var(--transition);
  background: var(--gray-50);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(249,115,22,0.1);
  background: var(--white);
}

.form-group textarea { resize: vertical; }

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--gray-800);
}

.footer-brand .logo {
  color: var(--white);
  display: inline-block;
  margin-bottom: 16px;
}

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

.footer-links h4 {
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-links ul { display: flex; flex-direction: column; gap: 10px; }

.footer-links a {
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 0.85rem;
}

/* Scroll to Top */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
  z-index: 999;
}
.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}
.scroll-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 968px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 0;
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
  }
  .nav-phone { display: none; }
  .nav-cta { display: none; }

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

  .diff-grid { grid-template-columns: 1fr; gap: 16px; }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .hero-buttons { flex-direction: column; align-items: center; }

  .about-stats { flex-direction: column; gap: 20px; }

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

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

  .product-tabs { gap: 4px; }
  .tab-btn { padding: 8px 14px; font-size: 0.75rem; }

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

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