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

:root {
  --primary-green: #00c853;
  --primary-dark: #2c3e50;
  --text-dark: #1a1a1a;
  --text-light: #555;
  --bg-light: #f8f9fa;
  --border-color: #e0e0e0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Sora', sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  background: #fff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header & Navigation */
header {
  background: #fff;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-green);
  font-family: 'Poppins', sans-serif;
  letter-spacing: -1px;
  text-decoration: none;
}

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

nav a {
  text-decoration: none;
  color: var(--text-dark);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

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

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, #34495e 100%);
  color: #fff;
  padding: 10rem 2rem;
  text-align: center;
  min-height: 700px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero h1 {
  font-size: 4rem;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  margin-bottom: 2rem;
  line-height: 1.1;
  letter-spacing: -2px;
}

.hero p {
  font-size: 1.1rem;
  max-width: 650px;
  margin: 0 auto 3rem;
  opacity: 0.95;
  line-height: 1.8;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: transparent;
  border: 2px solid var(--primary-green);
  border-radius: 50%;
  color: var(--primary-green);
  font-size: 1.5rem;
  text-decoration: none;
  transition: all 0.3s ease;
  animation: bounce 2s infinite;
}

.btn-download:hover {
  background: var(--primary-green);
  color: #fff;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Buttons */
.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--primary-green);
  padding: 0.8rem 2rem;
  border: 2px solid var(--primary-green);
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-outline:hover {
  background: var(--primary-green);
  color: #fff;
}

/* Why Choose Section */
.why-choose {
  background: #fff;
  padding: 4rem 2rem;
}

.why-choose h3 {
  font-size: 0.9rem;
  color: var(--primary-green);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-align: center;
}

.why-choose h2 {
  font-size: 2.5rem;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  margin-bottom: 2rem;
  color: var(--text-dark);
  text-align: center;
}

.why-choose-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 3rem;
}

.image-collage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  height: 400px;
}

.collage-item {
  background: linear-gradient(135deg, #ddd 0%, #ccc 100%);
  border-radius: 4px;
  overflow: hidden;
}

.collage-1 {
  background-image: url('images/ppf-showcase.jpg');
  background-size: cover;
  background-position: center;
}

.collage-2 {
  background-image: url('images/window-film.jpg');
  background-size: cover;
  background-position: center;
}

.collage-3 {
  background-image: url('images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
}

.collage-4 {
  background: linear-gradient(135deg, var(--primary-green) 0%, #00b347 100%);
}

.why-choose-text p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.8;
  text-align: justify;
}

.button-center {
  text-align: center;
  margin-top: 2rem;
}

/* Products Section */
.products-section {
  background-image: url('images/procut-technology.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  padding: 4rem 2rem;
  position: relative;
}

.products-overlay {
  background: rgba(0, 0, 0, 0.7);
  padding: 3rem 2rem;
  border-radius: 4px;
}

.products-section h3 {
  font-size: 0.9rem;
  color: var(--primary-green);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-align: center;
}

.products-section h2 {
  font-size: 2.5rem;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  margin-bottom: 3rem;
  color: #fff;
  text-align: center;
}

.products-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.product-column {
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.product-placeholder {
  background: linear-gradient(135deg, #e0e0e0 0%, #d0d0d0 100%);
  height: 150px;
  width: 100%;
}

.product-list {
  padding: 2rem;
  flex-grow: 1;
}

.product-list h4 {
  font-size: 0.95rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
  font-weight: 500;
  line-height: 1.6;
}

.product-list h4 strong {
  font-weight: 700;
}

.product-column .btn-outline {
  margin: 1rem 2rem 2rem;
  display: block;
  text-align: center;
}

/* ProCut Section */
.procut-section {
  background: #fff;
  padding: 4rem 2rem;
}

.procut-section h3 {
  font-size: 0.9rem;
  color: var(--primary-green);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.procut-section h2 {
  font-size: 2.5rem;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  margin-bottom: 2rem;
  color: var(--text-dark);
}

.procut-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.procut-text p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.8;
  text-align: justify;
}

.procut-image {
  width: 100%;
  height: 400px;
  border-radius: 4px;
  overflow: hidden;
}

.procut-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Innovation Section */
.innovation-section {
  background: var(--bg-light);
  padding: 4rem 2rem;
}

.innovation-section h3 {
  font-size: 0.9rem;
  color: var(--primary-green);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.innovation-section h2 {
  font-size: 2.5rem;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  margin-bottom: 2rem;
  color: var(--text-dark);
}

.innovation-section p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.8;
  text-align: justify;
  max-width: 100%;
}

/* Footer */
footer {
  background: var(--primary-dark);
  color: #fff;
  padding: 2rem;
  text-align: center;
}

footer p {
  color: #bbb;
  margin-bottom: 1rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

.social-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

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

/* Responsive */
@media (max-width: 768px) {
  header {
    padding: 1rem;
  }

  nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: #fff;
    padding: 1rem;
    gap: 1rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  }

  nav.active {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 0.95rem;
  }

  .why-choose-content,
  .procut-content,
  .products-grid-3 {
    grid-template-columns: 1fr;
  }

  .image-collage {
    height: 300px;
  }

  section {
    padding: 2rem 1rem;
  }

  section h2 {
    font-size: 1.8rem;
  }
}