/* Base Styles */
:root {
  --primary-color: #4a6cf7;
  --primary-dark: #3a56d4;
  --secondary-color: #6c757d;
  --light-color: #f8f9fa;
  --dark-color: #212529;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --body-color: #f5f5f5;
  --text-color: #333;
  --border-color: #e9ecef;
  --transition: all 0.3s ease;
  --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --border-radius: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--body-color);
}

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: var(--transition);
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  padding: 12px 24px;
  border-radius: 30px;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-align: center;
}

.btn:hover {
  background-color: var(--primary-dark);
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  width: 60px;
  height: 3px;
  background-color: var(--primary-color);
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
}

.section-header p {
  color: var(--secondary-color);
  font-size: 1.1rem;
}

/* Header */
header {
  background-color: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
}

.logo h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
}

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

.nav-links li {
  margin-left: 30px;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  bottom: -5px;
  left: 0;
  transition: var(--transition);
}

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

.btn-contact {
  background-color: var(--primary-color);
  color: white !important;
  padding: 10px 20px;
  border-radius: 30px;
}

.btn-contact:hover {
  background-color: var(--primary-dark);
}

.btn-contact::after {
  display: none;
}

.hamburger {
  display: none;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--dark-color);
  margin: 5px 0;
  transition: var(--transition);
}

/* Hero Section with Slideshow */
.hero {
  height: 100vh;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.slideshow-container {
  width: 100%;
  height: 100%;
  position: relative;
}

.slide {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-align: center;
}

.slide:nth-child(1) {
  background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1497366811353-6870744d04b2?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
  opacity: 1;
}

.slide:nth-child(2) {
  background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1504384308090-c894fdcc538d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
}

.slide:nth-child(3) {
  background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1552664730-d307ca884978?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
}

.slide-content {
  max-width: 800px;
  padding: 0 20px;
}

.slide-content h1 {
  font-size: 3.5rem;
  margin-bottom: 20px;
  line-height: 1.2;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s forwards;
  animation-delay: 0.5s;
}

.slide-content p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.9);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s forwards;
  animation-delay: 0.7s;
}

.slide-content .btn {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1s forwards;
  animation-delay: 0.9s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide.active {
  opacity: 1;
}

.slide-dots {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  z-index: 10;
}

.dot {
  width: 12px;
  height: 12px;
  background-color: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  margin: 0 8px;
  cursor: pointer;
  transition: var(--transition);
}

.dot.active, .dot:hover {
  background-color: white;
}

/* Services Section */
.services {
  padding: 100px 0;
  background-color: white;
}

/* Featured Service Card */
.featured-service {
  margin-bottom: 50px;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
  transition: var(--transition);
}

.featured-service:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.featured-service-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.featured-service-text {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-service-text h3 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.feature .featured-service-text p {
  margin-bottom: 25px;
  color: var(--secondary-color);
}

.featured-service-image {
  height: 100%;
  overflow: hidden;
}

.featured-service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: var(--transition);
}

.featured-service:hover .featured-service-image img {
  transform: scale(1.05);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.service-card {
  background-color: white;
  padding: 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  text-align: center;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.service-card .icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.service-card h3 {
  margin-bottom: 15px;
  font-size: 1.3rem;
}

.service-card p {
  color: var(--secondary-color);
  margin-bottom: 20px;
}

.more-link {
  font-weight: 600;
  display: inline-block;
}

.more-link i {
  margin-left: 5px;
  transition: var(--transition);
}

.more-link:hover i {
  transform: translateX(5px);
}

/* Service Detail Section */
.service-detail {
  padding: 100px 0;
  background-color: var(--light-color);
}

.service-detail-content {
  max-width: 800px;
  margin: 0 auto;
  background-color: white;
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.service-detail-content h3 {
  font-size: 1.5rem;
  margin: 30px 0 15px;
  color: var(--primary-color);
}

.service-detail-content h3:first-child {
  margin-top: 0;
}

.service-detail-content p {
  margin-bottom: 20px;
}

.service-detail-content ul, .service-detail-content ol {
  margin-bottom: 20px;
  padding-left: 20px;
}

.service-detail-content li {
  margin-bottom: 10px;
  position: relative;
  padding-left: 15px;
}

.service-detail-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--primary-color);
}

.service-detail-content .btn {
  margin-top: 20px;
}

/* About Section */
.about {
  padding: 100px 0;
  background-color: var(--light-color);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-text h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.about-text p {
  margin-bottom: 25px;
}

.company-info {
  width: 100%;
  margin-bottom: 30px;
  border-collapse: collapse;
}

.company-info th, .company-info td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.company-info th {
  width: 30%;
  color: var(--secondary-color);
  font-weight: 600;
}

/* About Detail Section */
.about-detail {
  padding: 100px 0;
  background-color: white;
}

.about-detail-content {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--light-color);
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.about-detail-content h3 {
  font-size: 1.5rem;
  margin: 30px 0 15px;
  color: var(--primary-color);
}

.about-detail-content h3:first-child {
  margin-top: 0;
}

.about-detail-content p {
  margin-bottom: 20px;
}

.history-table {
  width: 100%;
  margin-bottom: 30px;
  border-collapse: collapse;
}

.history-table th, .history-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.history-table th {
  width: 30%;
  color: var(--secondary-color);
  font-weight: 600;
}

/* Careers Section */
.careers {
  padding: 100px 0;
  background-color: white;
}

.careers-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.careers-text h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.careers-text h4 {
  font-size: 1.2rem;
  margin: 20px 0 10px;
}

.careers-text p {
  margin-bottom: 20px;
}

.careers-text ul {
  margin-bottom: 30px;
  padding-left: 20px;
}

.careers-text ul li {
  margin-bottom: 10px;
  position: relative;
  padding-left: 15px;
}

.careers-text ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--primary-color);
}

/* Careers Detail Section */
.careers-detail {
  padding: 100px 0;
  background-color: var(--light-color);
}

.careers-detail-content {
  max-width: 800px;
  margin: 0 auto;
  background-color: white;
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.careers-detail-content h3 {
  font-size: 1.5rem;
  margin: 30px 0 15px;
  color: var(--primary-color);
}

.careers-detail-content h3:first-child {
  margin-top: 0;
}

.job-position {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.job-position h4 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--dark-color);
}

.job-position p {
  margin-bottom: 10px;
}

.careers-detail-content ul, .careers-detail-content ol {
  margin-bottom: 20px;
  padding-left: 20px;
}

.careers-detail-content ul li {
  margin-bottom: 10px;
  position: relative;
  padding-left: 15px;
}

.careers-detail-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--primary-color);
}

.careers-detail-content ol {
  list-style-type: decimal;
  padding-left: 40px;
}

.careers-detail-content ol li {
  padding-left: 0;
}

.careers-detail-content ol li::before {
  display: none;
}

/* FAQ Section */
.faq {
  padding: 100px 0;
  background-color: var(--light-color);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background-color: white;
  border-radius: var(--border-radius);
  margin-bottom: 15px;
  box-shadow: var(--box-shadow);
  overflow: hidden;
}

.faq-question {
  padding: 20px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.toggle-icon {
  font-size: 1.5rem;
  color: var(--primary-color);
  transition: var(--transition);
}

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active .faq-answer {
  padding: 0 20px 20px;
  max-height: 1000px;
}

.faq-item.active .toggle-icon {
  transform: rotate(45deg);
}

.faq-more {
  text-align: center;
  margin-top: 40px;
}

/* FAQ Detail Section */
.faq-detail {
  padding: 100px 0;
  background-color: white;
}

.faq-detail-content {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--light-color);
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.faq-detail-content h3 {
  font-size: 1.5rem;
  margin: 30px 0 15px;
  color: var(--primary-color);
}

.faq-detail-content h3:first-child {
  margin-top: 0;
}

.faq-detail-item {
  margin-bottom: 25px;
}

.faq-detail-item h4 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--dark-color);
}

.faq-detail-item p {
  margin-bottom: 10px;
}

/* Contact Section */
.contact {
  padding: 100px 0;
  background-color: white;
}

.contact-content {
  max-width: 800px;
  margin: 0 auto;
}

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

.form-group {
  margin-bottom: 20px;
  width: 48%;
  display: inline-block;
}

.form-group.full-width {
  width: 100%;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
}

.form-group .required {
  color: var(--danger-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.2);
}

.btn-submit {
  width: 100%;
}

.form-status {
  margin-top: 20px;
  padding: 15px;
  border-radius: var(--border-radius);
  display: none;
}

.form-status.success {
  background-color: rgba(40, 167, 69, 0.1);
  color: var(--success-color);
  border: 1px solid var(--success-color);
  display: block;
}

.form-status.error {
  background-color: rgba(220, 53, 69, 0.1);
  color: var(--danger-color);
  border: 1px solid var(--danger-color);
  display: block;
}

/* ???select??????? input ? textarea ????? */
.form-group select {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
  background-color: white;
  cursor: pointer;
}

/* ?????????????? */
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.2);
}

/* ????????????? */
.form-group.full-width select {
  width: 100%;
}

/* Footer */
footer {
  background-color: var(--dark-color);
  color: white;
  padding: 80px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 50px;
  margin-bottom: 50px;
}

.footer-logo h2 {
  font-size: 1.8rem;
  margin-bottom: 15px;
  color: white;
}

.footer-logo p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
}

.social-links {
  display: flex;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  margin-right: 10px;
  color: white;
  transition: var(--transition);
}

.social-links a:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
}

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

.footer-links-column h3 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-links-column h3::after {
  content: '';
  position: absolute;
  width: 30px;
  height: 2px;
  background-color: var(--primary-color);
  bottom: 0;
  left: 0;
}

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

.footer-links-column ul li a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer-links-column ul li a:hover {
  color: white;
  padding-left: 5px;
}

.footer-links-column ul li i {
  margin-right: 10px;
  color: var(--primary-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.7);
}

/* Responsive Styles */
@media (max-width: 992px) {
  .about-content,
  .careers-content,
  .contact-content,
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .featured-service-content {
    grid-template-columns: 1fr;
  }
  
  .featured-service-image {
    height: 300px;
    order: -1;
  }
  
  .about-image,
  .careers-image {
    order: -1;
  }
  
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: white;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .nav-links li {
    margin: 15px 0;
  }
  
  .hamburger {
    display: block;
  }
  
  .hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .slide-content h1 {
    font-size: 2.5rem;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  .form-group {
    width: 100%;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .slide-content h1 {
    font-size: 2rem;
  }
  
  .section-header h2 {
    font-size: 1.8rem;
  }
}