/* Navigation styles */
.main-header {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  padding: 2rem 0;
  box-shadow: 0 4px 6px var(--shadow-color);
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.header-content {
  text-align: center;
  padding: 1rem 0 2rem;
  position: relative;
}

.header-content h1 {
  font-size: 2.5rem;
  margin: 0;
  color: white;
  letter-spacing: 1px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
  animation: slideDown 0.5s ease-out;
}

.header-content .subtitle {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.9);
  margin-top: 0.5rem;
}

.main-nav {
  padding: 1rem 0;
  backdrop-filter: blur(10px);
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-link {
  color: white;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 1.5rem;
  border-radius: 25px;
  transition: all var(--transition-speed) ease;
  font-weight: 500;
  backdrop-filter: blur(10px);
  background: var(--nav-hover-bg);
}

.nav-link:hover {
  background: var(--nav-hover-bg);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.nav-link.active {
  background: var(--nav-active-bg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.nav-link i {
  font-size: 1.4rem;
  transition: transform var(--transition-speed) ease;
}

.nav-link:hover i {
  transform: scale(1.1);
  color: var(--accent-color);
}

/* Add animations */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Add responsive styles */
@media (max-width: 768px) {
  .nav-list {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .nav-link {
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
  }
}

.nav-user {
  position: absolute;
  top: 1rem;
  right: 1rem;
}

.btn-logout {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  color: white;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0.375rem;
  transition: all 0.2s ease;
  background-color: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
}

.btn-logout:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-logout i {
  font-size: 1.25rem;
}

.section-nav {
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border-primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; /* Firefox */
}

.nav-list::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Edge */
}

.nav-item {
  flex-shrink: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s ease;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

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

.nav-link.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.nav-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  background-color: var(--bg-light);
  border-radius: 50%;
  font-size: 0.875rem;
  font-weight: 600;
}

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

.nav-link .material-icons {
  font-size: 1.25rem;
}

/* Active section highlighting */
.nav-link[href="#panel-identification"]:hover .nav-number,
.nav-link[href="#physical-properties"]:hover .nav-number,
.nav-link[href="#environmental-context"]:hover .nav-number {
  background-color: var(--primary);
  color: white;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .nav-link {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
  }

  .nav-number {
    width: 1.25rem;
    height: 1.25rem;
    font-size: 0.75rem;
  }

  .nav-link .material-icons {
    font-size: 1.125rem;
  }
}

/* Add scroll indicators when nav overflows */
.section-nav::before,
.section-nav::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 20px;
  pointer-events: none;
  z-index: 1;
}

.section-nav::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-white), transparent);
}

.section-nav::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-white), transparent);
}