:root {
    --rutgers-red: #cc0033;
    --rutgers-red-dark: #a50029;
    --gray-100: #f9f9f9;
    --gray-200: #eee;
    --gray-300: #ddd;
    --gray-400: #ccc;
    --gray-500: #999;
    --gray-600: #666;
    --gray-700: #555;
    --gray-800: #333;
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.05);
    --shadow-md: 0 5px 15px rgba(0,0,0,0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 15px;
}

body {
   font-family: 'Roboto', sans-serif;
   line-height: 1.6;
   padding: 0;
   margin: 0;
   background-color: var(--gray-100);
   color: var(--gray-800);
}

.top-banner {
   background-color: #cc0033;
   color: white;
   padding: 2rem 0;
   margin-bottom: 2rem;
}

.top-banner h1 {
   color: white;
   margin-bottom: 1rem;
}

.top-banner h3 {
   color: white;
   font-weight: 300;
   margin-bottom: 1rem;
   max-width: 800px;
   margin-left: auto;
   margin-right: auto;
}

.top-banner p {
   color: white;
   margin: 0;
}

.navbar {
   background-color: #cc0033;
   padding: 1rem;
   box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-container {
   max-width: 1200px;
   margin: 0 auto;
   display: flex;
   flex-direction: column;
   gap: 1rem;
}

.navbar-top {
   display: flex;
   justify-content: center;
   align-items: center;
}

.navbar-brand {
   color: white;
   text-decoration: none;
   font-size: 2rem;
   font-weight: bold;
   text-align: center;
}

.navbar-links {
   display: flex;
   gap: 1.5rem;
}

.navbar-links a {
   color: white;
   text-decoration: none;
   padding: 0.5rem 1rem;
   border-radius: 4px;
   transition: background-color 0.3s;
}

.navbar-links a:hover {
   background-color: rgba(255,255,255,0.1);
}

.navbar-description {
   color: white;
   text-align: center;
   max-width: 800px;
   margin: 0 auto;
}

.navbar-description h3 {
   color: white;
   font-size: 16px;
   font-weight: 300;
   margin: 0 0 0.5rem 0;
}

.navbar-description p {
   color: white;
   margin: 0;
   font-size: 14px;
}

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

h1 {
   font-size: 24px;
   margin-bottom: 10px;
}

h3 {
   font-size: 16px;
   font-weight: 300;
   margin-top: 0;
}

#search-form {
   display: flex;
   justify-content: center;
   align-items: center;
   margin: 40px 0;
}

.toggle-container {
   margin-right: 10px;
}

#search-bar {
   width: 400px;
   padding: 12px;
   margin-top: -10px;
   font-size: 16px;
   border: 1px solid #ddd;
   border-radius: 4px 0 0 4px;
   outline: none;
}

#search-button {
   padding: 12px 20px;
   margin-top: -10px;
   font-size: 16px;
   background-color: #cc0033;
   color: white;
   border: none;
   border-radius: 0 4px 4px 0;
   cursor: pointer;
   transition: background-color 0.3s;
}

#search-button:hover {
   background-color: #a50029;
}

.loading {
   display: none;
   margin-top: 20px;
   text-align: center;
}

.spinner {
   border: 4px solid #f3f3f3;
   border-top: 4px solid #cc0033;
   border-radius: 50%;
   width: 40px;
   height: 40px;
   animation: spin 1s linear infinite;
   margin: 0 auto;
}

@keyframes spin {
   0% { transform: rotate(0deg); }
   100% { transform: rotate(360deg); }
}

#search-results {
   margin-top: 40px;
   padding: 0 20px;
}

.course {
   background: white;
   margin-bottom: 1.5rem;
   padding: 1.5rem;
   border-radius: 8px;
   box-shadow: 0 2px 4px rgba(0,0,0,0.1);
   border: 1px solid #ddd;
}

.course:hover {
   transform: translateY(-1px);
   box-shadow: var(--shadow-md);
}

.course-header {
   display: flex;
   justify-content: space-between;
   align-items: flex-start;
   margin-bottom: 6px;
   padding-bottom: 6px;
   border-bottom: 1px solid var(--gray-200);
}

.course-info {
   display: flex;
   align-items: center;
   flex-wrap: wrap;
   gap: 4px;
}

.course-title {
   margin: 0;
   color: var(--rutgers-red);
   font-size: 0.9rem;
   font-weight: 600;
   line-height: 1.2;
}

.course-code {
   font-family: 'Roboto Mono', monospace;
   color: var(--gray-600);
   font-size: 0.7rem;
   background: var(--gray-100);
   padding: 2px 4px;
   border-radius: 2px;
   margin-left: 4px;
   font-weight: 500;
   letter-spacing: 0.2px;
}

.course-section {
   margin: 6px 0;
   padding: 6px;
   background: var(--gray-100);
   border-radius: 3px;
   border: 1px solid var(--gray-200);
}

.section-title {
   font-size: 0.65rem;
   font-weight: 600;
   color: var(--gray-700);
   margin-bottom: 4px;
   text-transform: uppercase;
   letter-spacing: 0.6px;
}

.professor-list {
   list-style: none;
   padding: 0;
   margin: 0;
   display: flex;
   flex-wrap: wrap;
   gap: 3px;
}

.professor-item {
   display: inline-block;
   background: white;
   padding: 2px 5px;
   border-radius: 8px;
   font-size: 0.7rem;
   border: 1px solid var(--gray-200);
   color: var(--gray-700);
   transition: all 0.2s ease;
}

.professor-item:hover {
   background: var(--gray-100);
   border-color: var(--gray-300);
}

.prerequisites {
   color: var(--gray-700);
   line-height: 1.3;
   font-size: 0.75rem;
}

.equivalencies {
   margin-top: 6px;
   padding-top: 6px;
   border-top: 1px solid var(--gray-200);
}

.equivalency-item {
   display: flex;
   align-items: center;
   margin-bottom: 3px;
   padding: 4px;
   background: var(--gray-100);
   border-radius: 3px;
   transition: all 0.2s ease;
}

.equivalency-item:hover {
   background: white;
   box-shadow: var(--shadow-sm);
}

.college-name {
   flex: 1;
   font-weight: 500;
   color: var(--gray-800);
   font-size: 0.75rem;
}

.distance {
   color: var(--gray-600);
   font-size: 0.7rem;
   margin: 0 4px;
   white-space: nowrap;
}

.course-code-equiv {
   font-family: 'Roboto Mono', monospace;
   background: white;
   padding: 1px 3px;
   border-radius: 2px;
   font-size: 0.7rem;
   border: 1px solid var(--gray-200);
   color: var(--gray-700);
   white-space: nowrap;
}

.error-message {
   color: #cc0033;
   text-align: center;
   padding: 20px;
   background-color: #fff;
   border-radius: 4px;
   box-shadow: 0 2px 5px rgba(0,0,0,0.1);
   margin: 20px 0;
}

.no-results {
   text-align: center;
   padding: 40px;
   background: white;
   border-radius: var(--radius-md);
   color: var(--gray-600);
   font-size: 1.1rem;
   margin: 40px 0;
   border: 2px dashed var(--gray-200);
}

.catalog-link {
   display: inline-flex;
   align-items: center;
   gap: 3px;
   padding: 4px 6px;
   background-color: var(--gray-100);
   color: var(--gray-700);
   text-decoration: none;
   border-radius: 3px;
   font-size: 0.7rem;
   border: 1px solid var(--gray-200);
   transition: all 0.2s ease;
}

.catalog-link:hover {
   background-color: white;
   border-color: var(--rutgers-red);
   color: var(--rutgers-red);
}

.catalog-link i {
   font-size: 0.6rem;
}

@media (max-width: 768px) {
   .container {
       padding: 0 10px;
   }

   #search-results {
       padding: 0 10px;
   }

   .course {
       padding: 6px;
       margin-bottom: 6px;
   }

   .course-header {
       flex-direction: column;
       gap: 4px;
   }

   .course-code {
       margin-left: 0;
       margin-top: 2px;
       display: inline-block;
   }

   .course-section {
       padding: 4px;
       margin: 4px 0;
   }

   .equivalency-item {
       flex-direction: column;
       align-items: flex-start;
       gap: 2px;
       padding: 3px;
   }

   .distance, .course-code-equiv {
       margin-left: 0;
   }

   .professor-list {
       gap: 2px;
   }

   .catalog-link {
       align-self: flex-start;
       margin-top: 2px;
   }

   /* Banner responsive */
   .banner {
       padding: 1.5rem 0.5rem;
   }

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

   .description-text {
       font-size: 0.85rem;
   }
}

/* Professor Suggestions Styles */
.suggestions-container {
    background: #f8f9fa;
    border: 2px dashed #dee2e6;
}

.suggestions-message {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: #495057;
    font-weight: 500;
}

.suggestions-list h4 {
    margin: 0.5rem 0;
    color: #343a40;
    font-size: 1rem;
}

.suggestion-item {
    background: #e9ecef;
    padding: 0.75rem 1rem;
    margin: 0.5rem 0;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid #ced4da;
}

.suggestion-item:hover {
    background: #cc0033;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(204, 0, 51, 0.3);
}

/* Professor Suggestions Styles */
.suggestions-container {
    background: #f8f9fa;
    border: 2px dashed #dee2e6;
}

.suggestions-message {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: #495057;
    font-weight: 500;
}

.suggestions-list h4 {
    margin: 0.5rem 0;
    color: #343a40;
    font-size: 1rem;
}

.suggestion-item {
    background: #e9ecef;
    padding: 0.75rem 1rem;
    margin: 0.5rem 0;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid #ced4da;
}

.suggestion-item:hover {
    background: #cc0033;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(204, 0, 51, 0.3);
}