:root {
  --primary-color: #45858c;
  --secondary-color: #a0d9d9;
  --accent-color: #d9c589;
  --accent-brown: #bf9765;
  --accent-red: #d92b04;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --bg-light: #f9fafb;
  --white: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: 'Poppins', 'Cairo', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  overflow-x: hidden;
}

body[dir='rtl'] {
  font-family: 'Cairo', sans-serif;
}

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

/* Language Selector */
.language-selector {
  display: flex;
  gap: 5px;
  background: var(--bg-light);
  padding: 5px;
  border-radius: 25px;
  margin-left: 20px;
  align-items: center;
}

body[dir='rtl'] .language-selector {
  margin-left: 0;
  margin-right: 20px;
}

.lang-btn {
  padding: 6px 14px;
  border: none;
  background: transparent;
  color: var(--text-dark);
  cursor: pointer;
  border-radius: 20px;
  font-weight: 600;
  transition: all 0.3s ease;
  font-size: 13px;
  min-width: 35px;
}

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

.lang-btn.active {
  background: var(--primary-color);
  color: var(--white);
}

/* Header */
.header {
  background: var(--white);
  box-shadow: 0 2px 10px var(--shadow);
  position: sticky;
  top: 0;
  z-index: 999;
  padding: 15px 0;
}

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

.logo-container {
  display: flex;
  align-items: center;
  gap: 15px;
}

.logo {
  height: 50px;
  width: auto;
  object-fit: contain;
}

.company-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-color);
  margin: 0;
}

/* Nav */
.nav {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav-link {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
  background: linear-gradient(
    135deg,
    var(--primary-color) 0%,
    var(--secondary-color) 50%,
    var(--accent-color) 100%
  );
  color: var(--white);
  padding: 120px 0 80px;
  text-align: center;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 15px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
  font-size: 1.6rem;
  font-weight: 400;
  margin-bottom: 15px;
  opacity: 0.95;
}

.hero-institution {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 10px;
  opacity: 0.95;
}

.hero-subtitle-ar {
  font-size: 1.3rem;
  font-weight: 400;
  margin-bottom: 20px;
  opacity: 0.95;
}

.hero-description {
  font-size: 1.3rem;
  font-weight: 300;
  opacity: 0.9;
}

/* About Section */
.about {
  padding: 80px 0;
  background: var(--white);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--accent-brown);
  border-radius: 2px;
}

.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.about-text {
  font-size: 1.1rem;
  color: var(--text-light);
  text-align: center;
  margin-bottom: 50px;
  line-height: 1.8;
}

/* Services Section */
.services {
  padding: 80px 0;
  background: var(--bg-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.service-card {
  background: var(--white);
  padding: 40px 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 6px var(--shadow);
  transition: all 0.3s ease;
  border-top: 4px solid var(--primary-color);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 25px var(--shadow);
  border-top-color: var(--accent-brown);
}

.service-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.service-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-dark);
}

/* Contact Section */
.contact {
  padding: 80px 0;
  background: var(--white);
}

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

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--bg-light);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 6px var(--shadow);
  transition: transform 0.3s ease;
}

.contact-item:hover {
  transform: translateY(-5px);
}

.contact-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.contact-details h3 {
  font-size: 1.2rem;
  color: var(--primary-color);
  margin-bottom: 10px;
  font-weight: 600;
}

.contact-details a {
  color: var(--text-dark);
  text-decoration: none;
  font-size: 1.1rem;
  transition: color 0.3s ease;
}

.contact-details a:hover {
  color: var(--primary-color);
}

.contact-details p {
  color: var(--text-dark);
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
}

/* Footer */
.footer {
  background: var(--primary-color);
  color: var(--white);
  padding: 30px 0;
  text-align: center;
}

.footer-text {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-title {
    font-size: 1.8rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

  .hero-institution {
    font-size: 1.1rem;
  }

  .hero-subtitle-ar {
    font-size: 1rem;
  }

  .hero-description {
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .nav {
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
  }

  .header .container {
    flex-direction: column;
    gap: 20px;
  }

  .language-selector {
    margin-left: 0;
    margin-top: 10px;
  }

  body[dir='rtl'] .language-selector {
    margin-right: 0;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

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

  .logo {
    height: 40px;
  }

  .company-name {
    font-size: 1.1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 0 60px;
  }

  .hero-title {
    font-size: 1.5rem;
  }

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

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

  .hero-subtitle-ar {
    font-size: 0.9rem;
  }

  .company-name {
    font-size: 0.95rem;
  }
}