:root {
    --teal: #006666;
    --light-gray: #E0E0E0;
    --white: #FFFFFF;
    --dark: #333333;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--dark);
    background-color: var(--light-gray);
    line-height: 1.6;
}

.text-teal {
    color: var(--teal) !important;
}

.bg-teal {
    background-color: var(--teal) !important;
}

.btn-teal {
    background-color: var(--teal);
    color: white;
    border: none;
}

.btn-teal:hover {
    background-color: #005555;
    color: white;
}

.border-teal {
    border-color: var(--teal) !important;
}

.navbar {
    padding: 0.75rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-size: 1.5rem;
    color: var(--teal) !important;
    transition: transform 0.3s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    color: var(--dark) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s ease, transform 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--teal) !important;
    transform: translateY(-2px);
}

.nav-link.active {
    color: var(--teal) !important;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background-color: var(--teal);
}

.main-content {
    min-height: calc(100vh - 200px);
    padding-top: 76px;
}

.hero-section {
    background: #000;
    position: relative;
    overflow: hidden;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: translate(-50%, -50%) scale(1.2);
    z-index: 0;
}

.hero-section .container {
    z-index: 1;
}

.hero-section h1,
.hero-section p,
.hero-section .btn {
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}

.min-vh-75 {
    min-height: 75vh;
}

.animate-fade-in {
    animation: fadeIn 1s ease-in;
}

.animate-fade-in-delay-1 {
    animation: fadeIn 1s ease-in 0.3s both;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 1s ease-in 0.6s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 10px 30px rgba(0, 102, 102, 0.2) !important;
}

.feature-icon {
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.testimonial-card {
    max-width: 800px;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    transition: transform 0.3s ease;
}

.carousel-control-prev:hover .carousel-control-prev-icon,
.carousel-control-next:hover .carousel-control-next-icon {
    transform: scale(1.2);
}

.page-header {
    background: linear-gradient(135deg, var(--teal) 0%, #004d4d 100%);
}

.bg-gradient-teal {
    background: linear-gradient(135deg, var(--teal) 0%, #004d4d 100%);
}

.cta-section {
    background: linear-gradient(135deg, var(--teal) 0%, #004d4d 100%);
}

.card {
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
}

.resource-card .expand-btn {
    transition: all 0.3s ease;
}

.resource-card:hover .expand-btn {
    background-color: var(--teal);
    color: white;
    border-color: var(--teal);
}

.sticky-filter {
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 0.2rem rgba(0, 102, 102, 0.25);
}

.btn {
    transition: all 0.3s ease;
    border-radius: 8px;
    font-weight: 500;
}

.btn-primary {
    background-color: var(--teal);
    border-color: var(--teal);
}

.btn-primary:hover {
    background-color: #005555;
    border-color: #005555;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 102, 0.3);
}

.btn-outline-primary {
    color: var(--teal);
    border-color: var(--teal);
}

.btn-outline-primary:hover {
    background-color: var(--teal);
    border-color: var(--teal);
    color: white;
}

.glossary-item {
    transition: all 0.3s ease;
}

.glossary-item:hover {
    border-left: 4px solid var(--teal) !important;
}

.accordion-button:not(.collapsed) {
    background-color: rgba(0, 102, 102, 0.1);
    color: var(--teal);
}

.accordion-button:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 0.2rem rgba(0, 102, 102, 0.25);
}

.form-control.is-valid,
.form-select.is-valid {
    border-color: var(--success);
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--danger);
}

.valid-feedback,
.invalid-feedback {
    display: none;
    margin-top: 0.5rem;
}

.form-control.is-valid ~ .valid-feedback,
.form-control.is-invalid ~ .invalid-feedback {
    display: block;
}

.footer {
    background-color: #1a1a1a !important;
    margin-top: auto;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    transition: color 0.3s ease, transform 0.3s ease;
    display: inline-block;
}

.footer-links a:hover {
    color: var(--white) !important;
    transform: translateX(5px);
    text-decoration: none;
}

.disclaimer-banner {
    animation: fadeUp 0.6s ease-in;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.search-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    animation: fadeIn 0.3s ease;
}

.search-modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 30px;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.search-close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.3s ease;
}

.search-close:hover {
    color: var(--dark);
}

.search-results {
    max-height: 400px;
    overflow-y: auto;
}

.search-result-item {
    padding: 15px;
    border-bottom: 1px solid var(--light-gray);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.search-result-item:hover {
    background-color: rgba(0, 102, 102, 0.05);
}

.toast-container {
    z-index: 9999;
}

.toast {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 250px;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast-success {
    border-left: 4px solid var(--success);
}

.toast-error {
    border-left: 4px solid var(--danger);
}

.toast-info {
    border-left: 4px solid #17a2b8;
}

.badge {
    font-weight: 500;
    padding: 0.5em 0.75em;
    border-radius: 6px;
}

.table {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
}

.table thead {
    background-color: var(--dark);
    color: white;
}

.table-hover tbody tr {
    transition: background-color 0.3s ease;
}

.table-hover tbody tr:hover {
    background-color: rgba(0, 102, 102, 0.05);
}

@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .hero-section {
        min-height: 500px;
    }
    
    .display-3 {
        font-size: 2rem;
    }
    
    .display-4 {
        font-size: 1.75rem;
    }
    
    .sticky-filter {
        position: relative;
        top: 0;
    }
    
    .search-modal-content {
        width: 95%;
        margin: 20% auto;
        padding: 20px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 102, 102, 0.3);
    border-radius: 50%;
    border-top-color: var(--teal);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--teal);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #005555;
}

.category-tab.active {
    background-color: var(--teal);
    color: white;
    border-color: var(--teal);
}

.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important;
}

.shadow {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.shadow-lg {
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175) !important;
}

#researchListBadge {
    font-size: 0.65rem;
    min-width: 18px;
    height: 18px;
    padding: 0.25rem 0.4rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #dc3545;
    border-radius: 50%;
    font-weight: 600;
}

#researchListLink {
    position: relative;
    text-decoration: none;
    transition: transform 0.3s ease;
}

#researchListLink:hover {
    transform: scale(1.1);
}

#researchListLink:focus {
    outline: 2px solid var(--teal);
    outline-offset: 2px;
}

.add-to-research-btn {
    transition: all 0.3s ease;
}

.add-to-research-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.add-to-research-btn:focus {
    outline: 2px solid #28a745;
    outline-offset: 2px;
}

.remove-btn:focus {
    outline: 2px solid #dc3545;
    outline-offset: 2px;
}