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

:root {
  --color-primary: #1a365d;
  --color-secondary: #2c5282;
  --color-accent: #3182ce;
  --color-text: #1a202c;
  --color-text-light: #4a5568;
  --color-bg: #ffffff;
  --color-bg-alt: #f7fafc;
  --color-border: #e2e8f0;
  --color-white: #ffffff;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

a:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

h1, h2, h3, h4 {
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
}

h2 {
  font-size: 2rem;
  font-weight: 600;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-sm);
}

/* Header */
.header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.logo:hover {
  color: var(--color-secondary);
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-link {
  color: var(--color-text);
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
}

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

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  margin: 5px 0;
  transition: 0.3s;
}

/* Main Content */
main {
  flex: 1;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-md);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  max-width: 700px;
  margin: 0 auto var(--spacing-md);
  opacity: 0.95;
}

.hero-image {
  margin-top: var(--spacing-lg);
  border-radius: 8px;
  overflow: hidden;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.hero-image img {
  width: 100%;
  height: auto;
}

/* Sections */
.section {
  padding: var(--spacing-xl) var(--spacing-md);
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

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

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-md);
}

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

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

/* Cards */
.card {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: var(--spacing-md);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.card-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-bg-alt);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  color: var(--color-accent);
  font-size: 1.5rem;
}

.card h3 {
  margin-bottom: var(--spacing-xs);
}

.card p {
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* Image Grid */
.image-text-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.image-text-section.reverse {
  direction: rtl;
}

.image-text-section.reverse > * {
  direction: ltr;
}

.image-container {
  border-radius: 8px;
  overflow: hidden;
}

.image-container img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

/* Notice */
.notice {
  background-color: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: var(--spacing-md) 0;
  font-size: 0.875rem;
  color: var(--color-text-light);
  border-radius: 0 4px 4px 0;
}

/* Contact Form */
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.contact-info {
  padding: var(--spacing-md);
}

.contact-info h3 {
  margin-bottom: var(--spacing-md);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.contact-item-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-bg-alt);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-accent);
}

.form-container {
  background-color: var(--color-white);
  padding: var(--spacing-md);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.2);
}

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

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-accent);
  color: var(--color-white);
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

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

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Footer */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-lg) var(--spacing-md);
  margin-top: auto;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-links a {
  color: var(--color-white);
  opacity: 0.9;
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-white);
}

.footer-copyright {
  opacity: 0.8;
  font-size: 0.875rem;
}

/* Legal Pages */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h2 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.legal-content h3 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

.legal-content ul {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.legal-content li {
  margin-bottom: var(--spacing-xs);
}

/* Page Header */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  padding: var(--spacing-lg) var(--spacing-md);
  text-align: center;
}

.page-header h1 {
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
}

.page-header p {
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    display: none;
    padding: var(--spacing-sm) 0;
  }

  .nav.active {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    padding: 0 var(--spacing-md);
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-link.active::after {
    display: none;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .image-text-section {
    grid-template-columns: 1fr;
  }

  .image-text-section.reverse {
    direction: ltr;
  }

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

  .footer-container {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .hero {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .section {
    padding: var(--spacing-lg) var(--spacing-md);
  }
}

@media (max-width: 360px) {
  .container {
    padding: var(--spacing-sm);
  }

  h1 {
    font-size: 1.75rem;
  }

  .hero p {
    font-size: 1rem;
  }
}