:root {
  --color-primary: #193277;
  --color-primary-dark: #0b2545;
  --color-secondary: #bd9d6c;
  --color-text-dark: #333;
  --color-background-light: #f9f9f9;
  --color-white: #ffffff;
  --font-primary: "Cairo", sans-serif;
  --font-secondary: "Tajawal", sans-serif;
  --transition-speed: 0.3s;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html,
body {
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-secondary);
  background-color: var(--color-background-light);
  color: var(--color-text-dark);
  line-height: 1.6;
  direction: rtl;
}

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

.page-title {
  font-size: 2.5rem;
  color: var(--color-primary-dark);
  text-align: center;
  margin: 20px 0 50px 0;
  font-weight: 700;
  position: relative;
  padding-bottom: 15px;
  margin-top: 50px;
}

.page-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 50%;
  transform: translateX(50%);
  width: 120px;
  height: 4px;
  background-color: var(--color-secondary);
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.8rem;
  color: var(--color-primary);
  margin-bottom: 30px;
  padding-bottom: 8px;
  border-right: 5px solid var(--color-secondary);
  padding-right: 15px;
  font-weight: 700;
}

.section-subtitle i {
  margin-left: 10px;
  color: var(--color-secondary);
}

.researcher-block {
  background-color: var(--color-white);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  margin-bottom: 40px;
  border-right: 4px solid var(--color-primary-dark);
}

.researcher-name {
  font-size: 1.5rem;
  color: var(--color-secondary);
  margin-bottom: 20px;
  padding-bottom: 5px;
  border-bottom: 1px dashed #eee;
}

.publication-list {
  padding-right: 25px;
}

.publication-list li {
  font-size: 0.95rem;
  color: var(--color-text-dark);
  margin-bottom: 15px;
  padding-bottom: 5px;
  line-height: 1.8;
}

.doi-link {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 600;
  margin-right: 10px;
}

.doi-link:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

.researcher-divider {
  border: none;
  border-top: 1px solid #ddd;
  margin: 50px 0;
  width: 50%;
  margin-right: auto;
  margin-left: auto;
}

.section-divider {
  border: none;
  border-top: 3px solid var(--color-secondary);
  margin: 60px 0;
}

.gallery-caption {
  text-align: center;
  font-size: 1.1rem;
  font-style: italic;
  color: var(--color-primary-dark);
  margin-bottom: 30px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.photo-album {
  margin-bottom: 30px;
}
.gallery-item {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-speed);
}

.gallery-item img {
  width: 100%;
  height: 150px;
  display: block;
  transition: all 0.5s ease;
  cursor: pointer;
}

.gallery-item:hover img {
  transform: scale(1.02);
  border: 1px solid var(--color-secondary);
}

@media (max-width: 768px) {
  .page-title {
    font-size: 2rem;
    margin-bottom: 40px;
  }

  .section-subtitle {
    font-size: 1.6rem;
    padding-right: 10px;
    margin-bottom: 20px;
  }

  .researcher-block {
    padding: 15px;
    margin-bottom: 25px;
    min-height: 50px;
    box-sizing: border-box;
  }

  .publication-list li {
    display: block;
    font-size: 0.9rem;
    padding-right: 10px;
    margin-bottom: 10px;
    line-height: 1.6;
  }

  .doi-link {
    display: block;
    margin-top: 5px;
    font-size: 0.85rem;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .gallery-caption {
    margin-bottom: 20px;
  }
}

/* مؤتمر دولي */
.conference-item {
  background-color: var(--color-white);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  margin-bottom: 50px;
  border-right: 5px solid var(--color-primary);
  transition:
    transform var(--transition-speed) ease,
    box-shadow var(--transition-speed) ease;
}

.conference-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.conference-description {
  font-size: 1.1rem;
  color: var(--color-text-dark);
  margin-bottom: 25px;
  line-height: 1.8;
  font-weight: 500;
  padding-right: 10px;
}

.conference-images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  justify-content: center;
}

.conference-images.single-image {
  grid-template-columns: 1fr;
  max-width: 400px;
  margin: 0 auto;
}

.img-wrapper {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
  transition: transform var(--transition-speed) ease;
}

.img-wrapper:hover {
  transform: scale(1.03);
}

.img-wrapper img {
  width: 100%;
  height: 200px;
  display: block;
  object-fit: cover;
}

@media (max-width: 768px) {
  .page-title {
    font-size: 2rem;
    margin-bottom: 40px;
  }

  .conference-item {
    padding: 20px;
    margin-bottom: 30px;
    border-right-width: 3px;
  }

  .conference-description {
    font-size: 1rem;
    margin-bottom: 20px;
    padding-right: 5px;
  }

  .conference-images {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .conference-images.single-image {
    max-width: 90%;
  }
}

/* مؤتمر علمي */
.department-conferences {
  margin-bottom: 50px;
}
.department-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.department-list li {
  background-color: var(--color-white);
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  border-left: 5px solid var(--color-secondary);
  transition: all var(--transition-speed);
}

.dept-link {
  display: block;
  padding: 20px 25px;
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  font-weight: 600;
}

.dept-link i {
  color: var(--color-secondary);
  margin-left: 10px;
  font-size: 1.2rem;
}

.department-list li:hover {
  transform: translateY(-3px);
  border-left-color: var(--color-primary);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.department-list li:hover .dept-link i {
  color: var(--color-primary);
}

@media (max-width: 768px) {
  .department-list {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .dept-link {
    font-size: 1rem;
  }

  .main-divider {
    margin: 50px 0 40px 0;
  }
  .logo-text {
    font-size: 1.2rem;
  }
}