/* Base styling */
:root {
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-200: #bfdbfe;
    --blue-500: #3b82f6;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --blue-800: #1e40af;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --red-50: #fef2f2;
    --red-100: #fee2e2;
    --red-200: #fecaca;
    --red-600: #dc2626;
    --red-800: #991b1b;
    --green-50: #f0fdf4;
    --green-100: #dcfce7;
    --green-200: #bbf7d0;
    --green-600: #16a34a;
    --green-800: #166534;
    --yellow-50: #fefce8;
    --yellow-100: #fef9c3;
    --yellow-200: #fef08a;
    --yellow-600: #ca8a04;
    --yellow-800: #854d0e;
    --purple-50: #faf5ff;
    --purple-100: #f3e8ff;
    --purple-200: #e9d5ff;
    --purple-600: #9333ea;
    --purple-800: #6b21a8;
    --orange-50: #fff7ed;
    --orange-100: #ffedd5;
    --orange-200: #fed7aa;
    --orange-600: #ea580c;
    --orange-800: #9a3412;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    width: 100%;
}

.shadow {
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.rounded {
    border-radius: 0.375rem;
}

.bg-white {
    background-color: white;
}

.p-4 {
    padding: 1rem;
}

.p-5 {
    padding: 1.25rem;
}

.px-3 {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
}

.py-1 {
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
}

.px-4 {
    padding-left: 1rem;
    padding-right: 1rem;
}

.py-2 {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.py-3 {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

.mb-1 {
    margin-bottom: 0.25rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 0.75rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mt-1 {
    margin-top: 0.25rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 0.75rem;
}

.mt-4 {
    margin-top: 1rem;
}

.mt-6 {
    margin-top: 1.5rem;
}

.mr-2 {
    margin-right: 0.5rem;
}

.ml-2 {
    margin-left: 0.5rem;
}

.mr-3 {
    margin-right: 0.75rem;
}

.ml-1 {
    margin-left: 0.25rem;
}

.space-y-1 > * + * {
    margin-top: 0.25rem;
}

.space-y-2 > * + * {
    margin-top: 0.5rem;
}

.space-y-3 > * + * {
    margin-top: 0.75rem;
}

.space-y-4 > * + * {
    margin-top: 1rem;
}

.space-y-6 > * + * {
    margin-top: 1.5rem;
}

.space-x-1 > * + * {
    margin-left: 0.25rem;
}

.space-x-2 > * + * {
    margin-left: 0.5rem;
}

.space-x-4 > * + * {
    margin-left: 1rem;
}

.grid {
    display: grid;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-4 {
    gap: 1rem;
}

.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.col-span-2 {
    grid-column: span 2 / span 2;
}

.flex {
    display: flex;
}

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.flex-1 {
    flex: 1 1 0%;
}

.text-xs {
    font-size: 0.75rem;
}

.text-sm {
    font-size: 0.875rem;
}

.text-md {
    font-size: 1rem;
}

.text-lg {
    font-size: 1.125rem;
}

.text-xl {
    font-size: 1.25rem;
}

.text-2xl {
    font-size: 1.5rem;
}

.font-medium {
    font-weight: 500;
}

.font-semibold {
    font-weight: 600;
}

.font-bold {
    font-weight: 700;
}

.text-white {
    color: white;
}

.text-blue-600 {
    color: var(--blue-600);
}

.text-blue-700 {
    color: var(--blue-700);
}

.text-blue-800 {
    color: var(--blue-800);
}

.text-blue-100 {
    color: var(--blue-100);
}

.text-gray-400 {
    color: var(--gray-400);
}

.text-gray-500 {
    color: var(--gray-500);
}

.text-gray-600 {
    color: var(--gray-600);
}

.text-gray-700 {
    color: var(--gray-700);
}

.text-gray-900 {
    color: var(--gray-900);
}

.text-green-700 {
    color: var(--green-700);
}

.text-green-800 {
    color: var(--green-800);
}

.text-red-700 {
    color: var(--red-700);
}

.text-red-800 {
    color: var(--red-800);
}

.text-purple-700 {
    color: var(--purple-700);
}

.text-purple-800 {
    color: var(--purple-800);
}

.bg-blue-50 {
    background-color: var(--blue-50);
}

.bg-blue-100 {
    background-color: var(--blue-100);
}

.bg-blue-500 {
    background-color: var(--blue-500);
}

.bg-blue-600 {
    background-color: var(--blue-600);
}

.bg-blue-700 {
    background-color: var(--blue-700);
}

.bg-blue-800 {
    background-color: var(--blue-800);
}

.bg-gray-50 {
    background-color: var(--gray-50);
}

.bg-gray-100 {
    background-color: var(--gray-100);
}

.bg-red-50 {
    background-color: var(--red-50);
}

.bg-red-100 {
    background-color: var(--red-100);
}

.bg-green-50 {
    background-color: var(--green-50);
}

.bg-green-100 {
    background-color: var(--green-100);
}

.bg-yellow-50 {
    background-color: var(--yellow-50);
}

.bg-yellow-100 {
    background-color: var(--yellow-100);
}

.bg-purple-50 {
    background-color: var(--purple-50);
}

.bg-purple-100 {
    background-color: var(--purple-100);
}

.bg-orange-50 {
    background-color: var(--orange-50);
}

.bg-orange-100 {
    background-color: var(--orange-100);
}

.border {
    border-width: 1px;
    border-style: solid;
}

.border-blue-100 {
    border-color: var(--blue-100);
}

.border-blue-200 {
    border-color: var(--blue-200);
}

.border-blue-600 {
    border-color: var(--blue-600);
}

.border-gray-200 {
    border-color: var(--gray-200);
}

.border-gray-300 {
    border-color: var(--gray-300);
}

.border-gray-400 {
    border-color: var(--gray-400);
}

.border-green-100 {
    border-color: var(--green-100);
}

.border-green-200 {
    border-color: var(--green-200);
}

.border-green-600 {
    border-color: var(--green-600);
}

.border-red-100 {
    border-color: var(--red-100);
}

.border-red-200 {
    border-color: var(--red-200);
}

.border-red-600 {
    border-color: var(--red-600);
}

.border-purple-100 {
    border-color: var(--purple-100);
}

.border-purple-200 {
    border-color: var(--purple-200);
}

.border-yellow-100 {
    border-color: var(--yellow-100);
}

.border-yellow-200 {
    border-color: var(--yellow-200);
}

.border-b {
    border-bottom-width: 1px;
    border-bottom-style: solid;
}

.border-b-2 {
    border-bottom-width: 2px;
    border-bottom-style: solid;
}

.border-transparent {
    border-color: transparent;
}

.rounded-full {
    border-radius: 9999px;
}

.rounded-lg {
    border-radius: 0.5rem;
}

.rounded-md {
    border-radius: 0.375rem;
}

.whitespace-nowrap {
    white-space: nowrap;
}

.whitespace-normal {
    white-space: normal;
}

.cursor-pointer {
    cursor: pointer;
}

.transition {
    transition-property: background-color, border-color, color, fill, stroke, opacity, box-shadow, transform;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

.hover\:bg-gray-50:hover {
    background-color: var(--gray-50);
}

.hover\:bg-blue-50:hover {
    background-color: var(--blue-50);
}

.hover\:bg-blue-700:hover {
    background-color: var(--blue-700);
}

.hover\:text-gray-700:hover {
    color: var(--gray-700);
}

.hover\:border-gray-300:hover {
    border-color: var(--gray-300);
}

.hover\:shadow-md:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.transition-shadow {
    transition-property: box-shadow;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

.transition-colors {
    transition-property: background-color, border-color, color, fill, stroke;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

.duration-200 {
    transition-duration: 200ms;
}

/* Header and Navigation */
header {
    background-color: var(--blue-700);
    color: white;
    padding: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

nav {
    background-color: var(--blue-600);
    color: white;
}

nav .container {
    display: flex;
    gap: 0.25rem;
}

nav button {
    background: none;
    border: none;
    color: white;
    padding: 0.75rem 1rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    cursor: pointer;
}

nav button.active {
    background-color: var(--blue-800);
}

nav button:hover:not(.active) {
    background-color: var(--blue-700);
}

nav button i {
    margin-right: 0.5rem;
}

/* Main Content */
main {
    flex: 1;
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* LearnTab Styling */
.learn-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.isotope-sidebar {
    background-color: white;
    padding: 1rem;
    border-radius: 0.375rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.isotope-content-container {
    flex: 1;
}

.search-container {
    position: relative;
    margin-bottom: 1rem;
}

.search-container input {
    width: 100%;
    padding: 0.5rem 0.75rem 0.5rem 2.5rem;
    border: 1px solid var(--gray-300);
    border-radius: 0.375rem;
}

.search-container i {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
}

.category-filter {
    margin-bottom: 1rem;
}

.high-yield-facts {
    margin-top: 1.5rem;
    padding: 0.75rem;
    background-color: var(--blue-50);
    border-radius: 0.375rem;
    border: 1px solid var(--blue-100);
}

.view-tabs {
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: 1rem;
    display: flex;
    gap: 1rem;
}

.view-tab {
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
}

.view-tab.active {
    border-color: var(--blue-500);
    color: var(--blue-600);
}

.view-tab:not(.active) {
    color: var(--gray-500);
}

.view-tab:not(.active):hover {
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.isotope-table {
    width: 100%;
    border-collapse: collapse;
}

.isotope-table th {
    padding: 0.75rem 1.5rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background-color: var(--gray-50);
    cursor: pointer;
}

.isotope-table th:hover {
    color: var(--gray-700);
}

.isotope-table th i {
    margin-left: 0.25rem;
    font-size: 0.75rem;
}

.isotope-table td {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--gray-200);
    font-size: 0.875rem;
}

.isotope-table tr:hover {
    background-color: var(--blue-50);
    cursor: pointer;
}

.isotope-cards {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 1rem;
}

.isotope-card {
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    border: 1px solid var(--gray-200);
    padding: 1.25rem;
    transition: box-shadow 0.2s;
    cursor: pointer;
}

.isotope-card:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.isotope-detail {
    padding: 1.25rem;
    background-color: white;
    border-radius: 0.375rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.isotope-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.isotope-detail-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-blue {
    background-color: var(--blue-600);
    color: white;
}

.badge-green {
    background-color: var(--green-100);
    color: var(--green-800);
}

.badge-red {
    background-color: var(--red-100);
    color: var(--red-800);
}

.badge-purple {
    background-color: var(--purple-100);
    color: var(--purple-800);
}

.badge-yellow {
    background-color: var(--yellow-100);
    color: var(--yellow-800);
}

.badge-orange {
    background-color: var(--orange-100);
    color: var(--orange-800);
}

.close-button {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    font-size: 1rem;
}

.close-button:hover {
    color: var(--gray-700);
}

.isotope-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.isotope-detail-item h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
}

.isotope-detail-item p {
    margin-top: 0.25rem;
}

.isotope-detail-key-points {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--gray-50);
    border-radius: 0.375rem;
}

.isotope-detail-key-points h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.isotope-detail-key-points ul {
    padding-left: 1.25rem;
    font-size: 0.875rem;
}

.isotope-detail-key-points li {
    margin-top: 0.25rem;
}

/* Quiz Tab Styling */
.quiz-container {
    padding: 1.25rem;
    background-color: white;
    border-radius: 0.375rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.quiz-start-panel {
    background-image: linear-gradient(to right, var(--blue-500), var(--blue-700));
    padding: 1.25rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    color: white;
}

.quiz-start-button {
    margin-top: 1rem;
    background-color: white;
    color: var(--blue-700);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.quiz-start-button:hover {
    background-color: var(--blue-50);
}

.quiz-tips {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--gray-50);
    border-radius: 0.5rem;
    border: 1px solid var(--gray-200);
}

.quiz-tips h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.quiz-tips ul {
    padding-left: 1.25rem;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.quiz-tips li {
    margin-top: 0.25rem;
}

.quiz-question-panel {
    padding: 1.5rem;
    background-color: var(--blue-50);
    border-radius: 0.5rem;
}

.quiz-question-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.quiz-question-number {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quiz-question-number-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    background-color: var(--blue-600);
    color: white;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.quiz-options {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.quiz-option {
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid var(--gray-300);
    cursor: pointer;
    display: flex;
    align-items: center;
    background-color: white;
    transition: background-color 0.2s, border-color 0.2s;
}

.quiz-option:hover {
    background-color: var(--gray-50);
}

.quiz-option.selected {
    border-color: var(--blue-600);
    background-color: var(--blue-50);
}

.quiz-option.correct {
    border-color: var(--green-600);
    background-color: var(--green-50);
}

.quiz-option.incorrect {
    border-color: var(--red-600);
    background-color: var(--red-50);
}

.quiz-option-marker {
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 9999px;
    border: 1px solid var(--gray-400);
    margin-right: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quiz-option.selected .quiz-option-marker {
    border-color: var(--blue-600);
}

.quiz-option.selected .quiz-option-marker-inner {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 9999px;
    background-color: var(--blue-600);
}

.quiz-option.correct .quiz-option-marker {
    border-color: var(--green-600);
    background-color: var(--green-600);
}

.quiz-option.incorrect .quiz-option-marker {
    border-color: var(--red-600);
    background-color: var(--red-600);
}

.quiz-explanation {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: white;
    border-radius: 0.5rem;
    border: 1px solid var(--gray-200);
}

.quiz-explanation h4 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.quiz-explanation p {
    font-size: 0.875rem;
    color: var(--gray-700);
}

.quiz-footer {
    margin-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.quiz-button {
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.quiz-button-primary {
    background-color: var(--blue-600);
    color: white;
}

.quiz-button-primary:hover {
    background-color: var(--blue-700);
}

.quiz-button-primary:disabled {
    background-color: var(--gray-300);
    cursor: not-allowed;
}

.quiz-score {
    font-size: 0.875rem;
    font-weight: 500;
}

/* Reference Tab Styling */
.reference-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.reference-card {
    background-color: white;
    padding: 1.25rem;
    border-radius: 0.375rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.reference-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.reference-subsection {
    padding: 1rem;
    background-color: var(--blue-50);
    border-radius: 0.5rem;
    border: 1px solid var(--blue-100);
}

.reference-subsection h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--blue-700);
    margin-bottom: 0.5rem;
}

.reference-subsection ul {
    padding-left: 1.25rem;
    font-size: 0.75rem;
}

.reference-subsection li {
    margin-top: 0.25rem;
}

.reference-decay-modes,
.reference-production-methods {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.reference-decay-mode,
.reference-production-method {
    padding: 0.75rem;
    background-color: var(--gray-50);
    border-radius: 0.375rem;
}

.reference-decay-mode h3,
.reference-production-method h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--blue-700);
}

.reference-decay-mode p,
.reference-production-method p {
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.reference-high-yield-clusters {
    margin-top: 1.5rem;
}

.reference-cluster {
    margin-bottom: 1.5rem;
}

.reference-cluster h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--blue-700);
}

.reference-cluster p {
    font-size: 0.75rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.reference-cluster-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
}

.reference-cluster-item {
    padding: 0.5rem;
    text-align: center;
    background-color: var(--blue-50);
    border: 1px solid var(--blue-200);
    border-radius: 0.375rem;
}

.reference-cluster-item-name {
    font-weight: 500;
}

.reference-cluster-item-halflife {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.reference-expert-summary {
    padding: 1rem;
    background-color: var(--blue-50);
    border-radius: 0.5rem;
    border: 1px solid var(--blue-100);
}

.reference-expert-summary ol {
    padding-left: 1.5rem;
}

.reference-expert-summary li {
    margin-top: 0.5rem;
}

/* About Tab Styling */
.about-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-section {
    background-color: white;
    padding: 1.25rem;
    border-radius: 0.375rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.about-section h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.about-section ul {
    padding-left: 1.25rem;
}

.about-section li {
    margin-top: 0.25rem;
}

/* Footer */
footer {
    background-color: var(--gray-100);
    padding: 1rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-top: 2rem;
}

/* Responsive Adjustments */
@media (min-width: 768px) {
    .learn-container {
        grid-template-columns: 1fr 3fr;
    }

    .isotope-cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .reference-section {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .reference-cluster-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    .isotope-cards {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}