:root {
  --primary-color: #0b2d6a; /* Deep blue, matching standard industrial style */
  --secondary-color: #2e8b57; /* Sea green, for accents */
  --text-color: #333333;
  --text-light: #666666;
  --bg-color: #ffffff;
  --bg-light: #f5f5f5;
  --white: #ffffff;
  --black: #000000;
  --transition: all 0.3s ease;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

body {
  font-family: var(--font-main);
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
}

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

ul {
  list-style: none;
}

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

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

/* Top Bar */
.top-bar {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 10px 0;
  font-size: 0.9rem;
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-bar .contact-info a {
  color: var(--white);
  margin-right: 15px;
  transition: var(--transition);
}

.top-bar .contact-info a:hover {
  color: var(--secondary-color);
}

/* Header & Navbar */
header {
  background-color: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

header.scrolled {
  padding: 5px 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

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

.logo img {
  max-height: 50px;
  margin-right: 10px;
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
}

.nav-item {
  margin-left: 25px;
  position: relative;
}

.nav-link {
  font-weight: 600;
  color: var(--text-color);
  text-transform: uppercase;
  font-size: 0.95rem;
  transition: var(--transition);
  padding: 10px 0;
  display: inline-block;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-color);
}

/* Dropdown */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--white);
  box-shadow: var(--shadow);
  min-width: 250px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 1000;
  border-top: 3px solid var(--primary-color);
}

.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 12px 20px;
  color: var(--text-color);
  border-bottom: 1px solid #eee;
  transition: var(--transition);
}

.dropdown-item:last-child {
  border-bottom: none;
}

.dropdown-item:hover {
  background-color: var(--bg-light);
  color: var(--primary-color);
  padding-left: 25px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 25px;
  background-color: var(--primary-color);
  color: var(--white);
  font-weight: 600;
  border-radius: 5px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.btn-outline:hover {
  background-color: var(--primary-color);
  color: var(--white);
}

/* Hamburger */
.hamburger {
  display: none;
  cursor: pointer;
  background: none;
  border: none;
}

.bar {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px auto;
  transition: var(--transition);
  background-color: var(--text-color);
}

/* Hero Section */
.hero {
  background: linear-gradient(rgba(11, 45, 106, 0.7), rgba(11, 45, 106, 0.7)), url('../banner/banner.png') center/cover;
  height: 80vh;
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--white);
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btns {
  display: flex;
  gap: 15px;
  justify-content: center;
}

/* Sections */
section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.section-title p {
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* Cards */
.service-card, .benefit-card, .process-card {
  background: var(--white);
  padding: 30px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
}

.service-card:hover, .benefit-card:hover, .process-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.card-icon {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.2rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.service-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px 8px 0 0;
  margin-bottom: 20px;
}

/* About Section */
.about-img {
  position: relative;
}

.about-img img {
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.about-content ul {
  margin-top: 20px;
}

.about-content li {
  margin-bottom: 10px;
  position: relative;
  padding-left: 25px;
}

.about-content li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--secondary-color);
  font-weight: bold;
}

/* Gallery Preview */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 15px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
}

.gallery-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: var(--transition);
}

.gallery-item:hover img {
  transform: scale(1.1);
}

/* Floating WhatsApp */
.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 40px;
  right: 40px;
  background-color: #25d366;
  color: #fff;
  border-radius: 50px;
  text-align: center;
  font-size: 30px;
  box-shadow: 2px 2px 3px #999;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1);
}

/* Contact Section */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
}

.contact-info-card {
  background: var(--bg-light);
  padding: 30px;
  border-radius: 8px;
}

.info-item {
  margin-bottom: 25px;
}

.info-item h4 {
  color: var(--primary-color);
  margin-bottom: 5px;
}

.contact-form {
  background: var(--white);
  padding: 30px;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-family: inherit;
  font-size: 1rem;
}

.form-group textarea {
  height: 150px;
  resize: vertical;
}

/* Footer */
footer {
  background-color: #1a1a1a;
  color: #fff;
  padding: 60px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-bottom: 40px;
}

.footer-col h3 {
  color: var(--white);
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 50px;
  height: 2px;
  background-color: var(--primary-color);
}

.footer-col p, .footer-col a {
  color: #bbb;
  margin-bottom: 10px;
  display: block;
}

.footer-col a:hover {
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #333;
  color: #bbb;
}

/* Page Header */
.page-header {
  background: linear-gradient(rgba(11, 45, 106, 0.8), rgba(11, 45, 106, 0.8)), url('https://via.placeholder.com/1920x400?text=Inner+Page') center/cover;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-align: center;
}

.page-header h1 {
  font-size: 2.5rem;
}

/* FAQ */
.faq-item {
  margin-bottom: 15px;
  border: 1px solid #ddd;
  border-radius: 5px;
  overflow: hidden;
}

.faq-question {
  background-color: var(--bg-light);
  padding: 15px 20px;
  cursor: pointer;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding: 15px 0;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

/* Service Detail */
.service-detail-content {
  margin-top: 30px;
}

/* Responsive Design */
@media (max-width: 992px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .top-bar {
    display: none;
  }
  
  .hamburger {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--white);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 10px rgba(0,0,0,0.1);
    padding: 20px 0;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-item {
    margin: 15px 0;
  }
  
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border-top: none;
    display: none;
    background-color: var(--bg-light);
  }
  
  .nav-item.active .dropdown-menu {
    display: block;
  }
  
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-btns {
    flex-direction: column;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .hero-content h1 {
    font-size: 2rem;
  }
}