:root {
  --primary-color: #0f172a;
  --secondary-color: #1e293b;
  --accent-color: #2563eb;
  --accent-hover: #1d4ed8;
  --text-dark: #334155;
  --text-light: #64748b;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --border-color: #e2e8f0;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --transition: all 0.3s ease;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: var(--font-family);
  color: var(--text-dark);
  background-color: var(--bg-light);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--accent-hover);
}

ul {
  list-style: none;
}

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

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

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

.header-top {
  background-color: var(--primary-color);
  color: #fff;
  padding: 8px 0;
  font-size: 0.85rem;
}

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

.header-top-info {
  display: flex;
  gap: 20px;
}

.header-top-info i {
  margin-right: 5px;
  color: var(--accent-color);
}

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

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-color);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo span {
  color: var(--accent-color);
}

.nav-menu {
  display: flex;
  gap: 25px;
  align-items: center;
}

.nav-link {
  color: var(--text-dark);
  font-weight: 500;
  font-size: 0.95rem;
}

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

.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background-color: var(--accent-color);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

/* Mobile Menu Toggle */
.hamburger {
  display: none;
  cursor: pointer;
}

.hamburger .bar {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px auto;
  -webkit-transition: all 0.3s ease-in-out;
  transition: all 0.3s ease-in-out;
  background-color: var(--primary-color);
}

/* Hero Section */
.hero {
  position: relative;
  background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.8)), url('../images/hero_bg.png') center/cover no-repeat;
  color: #fff;
  padding: 120px 0;
  text-align: center;
}

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

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2rem;
  color: #cbd5e1;
  margin-bottom: 30px;
  line-height: 1.6;
}

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

.hero.inner-hero {
  padding: 80px 0 60px;
  background: var(--primary-color);
}

.hero.inner-hero h1 {
  font-size: 2.8rem;
}

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

.section-header {
  text-align: center;
  margin-bottom: 50px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: 2.2rem;
  color: var(--primary-color);
  margin-bottom: 15px;
  font-weight: 700;
}

.section-subtitle {
  color: var(--text-light);
  font-size: 1.1rem;
}

/* Two Column Layout */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-text h2 {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.about-text p {
  margin-bottom: 15px;
  color: var(--text-light);
}

.about-image img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

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

.card {
  background: var(--bg-white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-img {
  height: 220px;
  background-color: var(--border-color);
  position: relative;
  overflow: hidden;
}

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

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

.card-body {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.card-text {
  color: var(--text-light);
  margin-bottom: 20px;
  font-size: 0.95rem;
  flex-grow: 1;
}

.card-link {
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.card-link i {
  font-size: 0.8rem;
  transition: var(--transition);
}

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

/* Services Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.feature-box {
  background: var(--bg-white);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.feature-box:hover {
  border-color: var(--accent-color);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 70px;
  height: 70px;
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--accent-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 20px;
  transition: var(--transition);
}

.feature-box:hover .feature-icon {
  background-color: var(--accent-color);
  color: white;
}

.feature-box h3 {
  margin-bottom: 15px;
  color: var(--primary-color);
}

.feature-box p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* Stats Section */
.stats {
  background-color: var(--primary-color);
  color: white;
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat-item h3 {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-color);
  margin-bottom: 5px;
}

.stat-item p {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.cta-section p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Forms */
.form-container {
  background: var(--bg-white);
  padding: 40px;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  max-width: 800px;
  margin: 0 auto;
}

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

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-dark);
}

.form-control {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.checkbox-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.95rem;
}

/* Contact Info Grid */
.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 50px;
}

.contact-info-card {
  text-align: center;
  padding: 30px;
  background: var(--bg-white);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
}

.contact-info-card i {
  font-size: 2rem;
  color: var(--accent-color);
  margin-bottom: 15px;
}

.contact-info-card h3 {
  margin-bottom: 10px;
  color: var(--primary-color);
}

.contact-info-card p, .contact-info-card a {
  color: var(--text-light);
}

/* Footer */
footer {
  background-color: var(--primary-color);
  color: #fff;
  padding: 80px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-col h3 {
  font-size: 1.2rem;
  margin-bottom: 25px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 2px;
  background-color: var(--accent-color);
}

.footer-col p {
  color: #cbd5e1;
  margin-bottom: 15px;
  font-size: 0.95rem;
}

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

.footer-links a {
  color: #cbd5e1;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--accent-color);
  padding-left: 5px;
}

.footer-contact li {
  display: flex;
  gap: 15px;
  margin-bottom: 15px;
  color: #cbd5e1;
  font-size: 0.95rem;
  align-items: flex-start;
}

.footer-contact i {
  color: var(--accent-color);
  margin-top: 4px;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #94a3b8;
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom a {
  color: #94a3b8;
}

.footer-bottom a:hover {
  color: var(--accent-color);
}

/* Content Page Typography */
.content-page {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-white);
  padding: 40px;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.content-page h2 {
  color: var(--primary-color);
  margin: 30px 0 15px;
}

.content-page p {
  margin-bottom: 15px;
  color: var(--text-dark);
}

.content-page ul {
  list-style: disc;
  margin-left: 20px;
  margin-bottom: 20px;
}

.content-page li {
  margin-bottom: 8px;
}

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

@media (max-width: 768px) {
  .header-top {
    display: none;
  }
  
  .hamburger {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--bg-white);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 10px rgba(0,0,0,0.1);
    padding: 30px 0;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }
  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .contact-info-grid {
    grid-template-columns: 1fr;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
}

@media (max-width: 576px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-btns {
    flex-direction: column;
  }
  
  .checkbox-group {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 15px;
  }
}