/* Header */
header {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: var(--white);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: var(--glass-border);
}

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

.logo-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  height: 60px;
  transition: var(--transition);
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.2));
}

.logo:hover {
  transform: scale(1.05) rotate(-5deg);
  filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.3));
}

.university-name h1 {
  font-size: 1.3rem;
  margin-bottom: 0.2rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.university-name p {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* Navigation */
nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

nav ul li a {
  color: var(--white);
  font-weight: 400;
  padding: 0.5rem 0;
  position: relative;
  display: inline-block;
}

nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: var(--transition);
}

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

nav ul li a:hover::after {
  width: 100%;
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
  z-index: 1;
  transform: scale(1);
}

.hero-slide::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(85, 0, 0, 0.7), rgba(85, 0, 0, 0.4));
}

.hero-slide.active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: var(--white);
  padding: 0 2rem;
  z-index: 2;
}

.hero-content {
  max-width: 800px;
  padding: 2rem;
  background: var(--glass-effect);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: 20px;
  border: var(--glass-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 2.5rem;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
  opacity: 0.9;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* Quick Links Section */
.quick-links {
  background-color: var(--light-gray);
  position: relative;
}

.quick-links::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://www.transparenttextures.com/patterns/concrete-wall.png');
  opacity: 0.05;
  z-index: 1;
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

/* Footer */
footer {
  background: linear-gradient(135deg, var(--dark-gray), #1a1a1a);
  color: var(--white);
  padding: 4rem 0 2rem;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://www.transparenttextures.com/patterns/carbon-fibre.png');
  opacity: 0.1;
  z-index: 1;
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  height: 70px;
  margin-bottom: 1.5rem;
  transition: var(--transition);
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.3));
}

.footer-logo:hover {
  transform: rotate(-5deg) scale(1.05);
  filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.5));
}

.footer-column h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.8rem;
}

.footer-column h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 2px;
  background-color: var(--accent-color);
}

.copyright {
  text-align: center;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.7;
  font-size: 0.9rem;
}