Diabetes / static /styles.css
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Initial deploy: Diabetes Risk Predictor with Enhanced Chatbot
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/* ========================================
Diabetes Health Predictor - AI Doctor Portal
Hospital-Style CSS Theme
======================================== */
/* ========================================
ROOT VARIABLES & RESET
======================================== */
:root {
/* Medical Theme Colors */
--primary-color: #2563eb; /* Teal/Cyan */
--primary-dark: #1d4ed8;
--primary-light: #22d3ee;
--secondary-color: #3b82f6; /* Soft Blue */
--success-color: #10b981; /* Green */
--danger-color: #ef4444; /* Red */
--warning-color: #f59e0b; /* Orange */
/* Neutrals */
--white: #ffffff;
--light-bg: #f0f9ff; /* Light blue tint */
--card-bg: #ffffff;
--text-dark: #1e293b;
--text-gray: #64748b;
--border-color: #e2e8f0;
--shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
--shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
--shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
/* Typography */
--font-family: 'Inter', 'Poppins', sans-serif, sans-serif;
--font-size-base: 16px;
/* Spacing */
--spacing-xs: 0.5rem;
--spacing-sm: 1rem;
--spacing-md: 1.5rem;
--spacing-lg: 2rem;
--spacing-xl: 3rem;
/* Border Radius */
--radius-sm: 6px;
--radius-md: 12px;
--radius-lg: 16px;
/* Transitions */
--transition-fast: 0.2s ease;
--transition-normal: 0.3s ease;
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: var(--font-family);
font-size: var(--font-size-base);
line-height: 1.6;
color: var(--text-dark);
background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
min-height: 100vh;
}
/* ========================================
NAVBAR
======================================== */
.navbar {
background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
color: var(--white);
padding: var(--spacing-md) 0;
box-shadow: var(--shadow-lg);
position: sticky;
top: 0;
z-index: 1000;
}
.navbar .container {
display: flex;
justify-content: space-between;
align-items: center;
flex-wrap: wrap;
}
.nav-brand {
display: flex;
align-items: center;
gap: var(--spacing-sm);
font-size: 1.5rem;
font-weight: 700;
}
.nav-brand i {
font-size: 2rem;
animation: pulse 2s infinite;
}
.dashboard-link {
background: rgba(255, 255, 255, 0.2);
color: white;
padding: 10px 20px;
border-radius: 25px;
text-decoration: none;
font-weight: 600;
transition: all 0.3s ease;
display: flex;
align-items: center;
gap: 8px;
backdrop-filter: blur(10px);
}
.dashboard-link:hover {
background: rgba(255, 255, 255, 0.3);
transform: translateY(-2px);
box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}
.dashboard-link i {
font-size: 1.1rem;
}
.nav-subtitle {
font-size: 0.9rem;
font-weight: 300;
opacity: 0.95;
}
@keyframes pulse {
0%, 100% { transform: scale(1); }
50% { transform: scale(1.05); }
}
/* ========================================
CONTAINER & LAYOUT
======================================== */
.container {
max-width: 1200px;
margin: 0 auto;
padding: 0 var(--spacing-md);
}
.main-container {
padding: var(--spacing-xl) 0;
min-height: calc(100vh - 200px);
}
/* ========================================
HEADER SECTION
======================================== */
.header-section {
text-align: center;
margin-bottom: var(--spacing-xl);
position: relative;
}
/* Animated Logo Container */
.logo-container {
display: flex;
justify-content: center;
margin-bottom: var(--spacing-lg);
position: relative;
}
.logo-circle {
position: relative;
width: 120px;
height: 120px;
background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
box-shadow: 0 10px 30px rgba(8, 145, 178, 0.3);
animation: float 3s ease-in-out infinite;
z-index: 10;
}
.logo-icon {
font-size: 3.5rem;
color: var(--white);
animation: heartbeat 1.5s infinite;
z-index: 11;
}
/* Pulse Rings Animation */
.pulse-ring,
.pulse-ring-2 {
position: absolute;
width: 120px;
height: 120px;
border: 3px solid var(--primary-color);
border-radius: 50%;
animation: pulse-ring 2s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}
.pulse-ring-2 {
animation-delay: 1s;
}
@keyframes pulse-ring {
0% {
transform: scale(1);
opacity: 1;
}
100% {
transform: scale(1.8);
opacity: 0;
}
}
@keyframes float {
0%, 100% {
transform: translateY(0px);
}
50% {
transform: translateY(-15px);
}
}
@keyframes heartbeat {
0%, 100% {
transform: scale(1);
}
10%, 30% {
transform: scale(1.15);
}
20%, 40% {
transform: scale(1);
}
}
.header-section h1 {
font-size: 2.5rem;
font-weight: 700;
margin-bottom: var(--spacing-sm);
display: flex;
align-items: center;
justify-content: center;
gap: var(--spacing-sm);
}
.gradient-text {
background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--primary-color) 100%);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
background-clip: text;
animation: gradient-shift 3s ease infinite;
background-size: 200% auto;
}
@keyframes gradient-shift {
0%, 100% {
background-position: 0% center;
}
50% {
background-position: 100% center;
}
}
.subtitle {
font-size: 1.1rem;
color: var(--text-gray);
font-weight: 400;
display: flex;
align-items: center;
justify-content: center;
gap: 0.5rem;
}
.subtitle i {
color: var(--primary-color);
font-size: 1rem;
}
.developer-badge {
display: inline-block;
margin-top: var(--spacing-md);
padding: 0.5rem 1.5rem;
background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
border: 2px solid var(--primary-color);
border-radius: 50px;
color: var(--primary-dark);
font-weight: 600;
font-size: 0.9rem;
box-shadow: var(--shadow-sm);
animation: badge-glow 2s ease-in-out infinite;
}
.developer-badge i {
color: var(--primary-color);
margin-right: 0.5rem;
}
@keyframes badge-glow {
0%, 100% {
box-shadow: 0 0 5px rgba(8, 145, 178, 0.3);
}
50% {
box-shadow: 0 0 20px rgba(8, 145, 178, 0.6);
}
}
/* ========================================
CARDS
======================================== */
.card {
background: var(--card-bg);
border-radius: var(--radius-lg);
box-shadow: var(--shadow-md);
margin-bottom: var(--spacing-lg);
overflow: hidden;
transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.card:hover {
transform: translateY(-5px);
box-shadow: var(--shadow-lg);
}
.card-header {
background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
color: var(--white);
padding: var(--spacing-md) var(--spacing-lg);
display: flex;
align-items: center;
gap: var(--spacing-sm);
}
.card-header h2 {
font-size: 1.5rem;
font-weight: 600;
margin: 0;
}
.card-header i {
font-size: 1.8rem;
}
.card-body {
padding: var(--spacing-lg);
}
/* ========================================
FORMS
======================================== */
.form-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
gap: var(--spacing-md);
margin-bottom: var(--spacing-md);
}
.form-group {
display: flex;
flex-direction: column;
}
.form-group.full-width {
grid-column: 1 / -1;
}
.form-group label {
font-weight: 500;
color: var(--text-dark);
margin-bottom: var(--spacing-xs);
display: flex;
align-items: center;
gap: 0.5rem;
}
.form-group label i {
color: var(--primary-color);
}
.form-group input,
.form-group select,
.form-group textarea {
padding: 0.75rem 1rem;
border: 2px solid var(--border-color);
border-radius: var(--radius-sm);
font-family: var(--font-family);
font-size: 1rem;
transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
outline: none;
border-color: var(--primary-color);
box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
}
.form-group small {
font-size: 0.85rem;
color: var(--text-gray);
margin-top: 0.25rem;
}
.form-group textarea {
resize: vertical;
min-height: 80px;
}
/* ========================================
BUTTONS
======================================== */
.button-group {
display: flex;
gap: var(--spacing-sm);
justify-content: center;
flex-wrap: wrap;
margin-top: var(--spacing-md);
}
.btn {
padding: 0.875rem 2rem;
border: none;
border-radius: var(--radius-md);
font-family: var(--font-family);
font-size: 1rem;
font-weight: 600;
cursor: pointer;
display: inline-flex;
align-items: center;
gap: 0.5rem;
transition: all var(--transition-fast);
text-decoration: none;
box-shadow: var(--shadow-sm);
}
.btn:hover {
transform: translateY(-2px);
box-shadow: var(--shadow-md);
}
.btn:active {
transform: translateY(0);
}
.btn-primary {
background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
color: var(--white);
}
.btn-primary:hover {
background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}
.btn-success {
background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
color: var(--white);
}
.btn-success:hover {
background: linear-gradient(135deg, #059669 0%, var(--success-color) 100%);
}
.btn-secondary {
background: var(--white);
color: var(--text-dark);
border: 2px solid var(--border-color);
}
.btn-secondary:hover {
background: var(--light-bg);
border-color: var(--primary-color);
}
.btn:disabled {
opacity: 0.6;
cursor: not-allowed;
transform: none !important;
}
/* ========================================
RESULTS SECTION
======================================== */
.result-container {
text-align: center;
}
.result-badge {
display: inline-block;
padding: var(--spacing-md) var(--spacing-xl);
border-radius: var(--radius-lg);
font-size: 1.5rem;
font-weight: 700;
margin-bottom: var(--spacing-md);
box-shadow: var(--shadow-md);
}
.result-badge.high-risk {
background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
color: var(--danger-color);
border: 2px solid var(--danger-color);
}
.result-badge.low-risk {
background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
color: var(--success-color);
border: 2px solid var(--success-color);
}
.result-details {
background: var(--light-bg);
padding: var(--spacing-lg);
border-radius: var(--radius-md);
margin: var(--spacing-md) 0;
}
.result-row {
display: flex;
justify-content: space-between;
padding: var(--spacing-sm) 0;
border-bottom: 1px solid var(--border-color);
}
.result-row:last-child {
border-bottom: none;
}
.result-row strong {
color: var(--text-dark);
}
.confidence-badge {
background: var(--primary-color);
color: var(--white);
padding: 0.5rem 1rem;
border-radius: var(--radius-sm);
font-weight: 600;
display: inline-block;
margin: var(--spacing-sm) 0;
}
.recommendation {
background: #fef3c7;
border-left: 4px solid var(--warning-color);
padding: var(--spacing-md);
border-radius: var(--radius-sm);
margin-top: var(--spacing-md);
font-weight: 500;
}
.comparison-section {
margin-top: var(--spacing-lg);
padding-top: var(--spacing-lg);
border-top: 1px solid var(--border-color);
text-align: left;
}
.comparison-section h3 {
display: flex;
align-items: center;
gap: 0.6rem;
margin-bottom: 0.5rem;
}
.comparison-subtitle {
color: var(--text-gray);
margin-bottom: var(--spacing-md);
}
.comparison-controls {
display: flex;
flex-direction: column;
gap: 0.75rem;
background: var(--light-bg);
padding: var(--spacing-md);
border-radius: var(--radius-md);
border: 1px solid var(--border-color);
}
.comparison-controls select {
width: 100%;
min-height: 180px;
padding: 0.75rem;
border-radius: var(--radius-sm);
border: 1px solid var(--border-color);
font-family: var(--font-family);
font-size: 0.95rem;
background: var(--white);
}
.comparison-hint {
font-size: 0.85rem;
color: var(--text-gray);
}
.comparison-status {
min-height: 1.2rem;
font-size: 0.9rem;
color: var(--text-gray);
}
.graph-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
gap: var(--spacing-md);
margin-top: var(--spacing-lg);
}
.graph-card {
background: var(--card-bg);
border-radius: var(--radius-md);
border: 1px solid var(--border-color);
padding: var(--spacing-md);
box-shadow: var(--shadow-sm);
}
.graph-card h4 {
margin-bottom: 0.75rem;
color: var(--text-dark);
}
.graph-card img {
width: 100%;
height: auto;
border-radius: var(--radius-sm);
border: 1px solid var(--border-color);
background: var(--white);
}
.explanation-card {
margin-top: var(--spacing-lg);
background: linear-gradient(135deg, #e0f2fe 0%, #e7f5ff 100%);
border-radius: var(--radius-md);
padding: var(--spacing-md);
border: 1px solid var(--primary-light);
box-shadow: var(--shadow-sm);
}
.explanation-card h4 {
margin-bottom: 0.75rem;
color: var(--primary-dark);
display: flex;
align-items: center;
gap: 0.5rem;
}
.explanation-text {
color: var(--text-dark);
line-height: 1.7;
white-space: pre-line;
}
/* ========================================
PATIENT SUMMARY
======================================== */
.patient-summary {
background: linear-gradient(135deg, #e0f2fe 0%, #dbeafe 100%);
border: 2px solid var(--primary-color);
border-radius: var(--radius-md);
padding: var(--spacing-md);
margin-bottom: var(--spacing-lg);
}
.patient-summary h3 {
color: var(--primary-dark);
margin-bottom: var(--spacing-sm);
display: flex;
align-items: center;
gap: 0.5rem;
}
.patient-summary-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: var(--spacing-sm);
}
.patient-summary-item {
display: flex;
justify-content: space-between;
padding: 0.5rem;
background: var(--white);
border-radius: var(--radius-sm);
}
.patient-summary-item strong {
color: var(--text-dark);
}
/* ========================================
MODAL
======================================== */
.modal {
display: none;
position: fixed;
z-index: 2000;
left: 0;
top: 0;
width: 100%;
height: 100%;
background: rgba(0, 0, 0, 0.7);
animation: fadeIn var(--transition-fast);
}
.modal.show {
display: flex;
align-items: center;
justify-content: center;
}
@keyframes fadeIn {
from { opacity: 0; }
to { opacity: 1; }
}
.modal-content {
background: var(--white);
border-radius: var(--radius-lg);
width: 90%;
max-width: 800px;
max-height: 90vh;
overflow: hidden;
display: flex;
flex-direction: column;
animation: slideUp 0.3s ease;
box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.modal-tab-bar {
display: flex;
gap: 0.5rem;
margin-bottom: var(--spacing-md);
border-bottom: 1px solid var(--border-color);
padding-bottom: 0.5rem;
}
.modal-tab {
background: rgba(59, 130, 246, 0.12);
border: none;
border-radius: 999px;
padding: 0.5rem 1.25rem;
font-weight: 600;
color: var(--primary-dark);
cursor: pointer;
transition: all var(--transition-fast);
}
.modal-tab:hover {
background: rgba(59, 130, 246, 0.2);
}
.modal-tab.active {
background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
color: var(--white);
box-shadow: var(--shadow-sm);
}
.comparison-heading {
display: flex;
align-items: center;
gap: 0.6rem;
margin-bottom: 0.5rem;
}
@keyframes slideUp {
from {
transform: translateY(50px);
opacity: 0;
}
to {
transform: translateY(0);
opacity: 1;
}
}
.modal-header {
background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
color: var(--white);
padding: var(--spacing-md) var(--spacing-lg);
display: flex;
justify-content: space-between;
align-items: center;
}
.modal-header h2 {
font-size: 1.5rem;
margin: 0;
display: flex;
align-items: center;
gap: var(--spacing-sm);
}
.close {
font-size: 2rem;
font-weight: 700;
color: var(--white);
cursor: pointer;
transition: transform var(--transition-fast);
}
.close:hover {
transform: scale(1.2);
}
.modal-body {
padding: var(--spacing-lg);
overflow-y: auto;
flex: 1;
}
.modal-footer {
padding: var(--spacing-md) var(--spacing-lg);
border-top: 1px solid var(--border-color);
display: flex;
gap: var(--spacing-sm);
justify-content: flex-end;
}
.report-content {
font-family: 'Courier New', monospace;
white-space: pre-wrap;
background: var(--light-bg);
padding: var(--spacing-md);
border-radius: var(--radius-sm);
font-size: 0.9rem;
line-height: 1.6;
color: var(--text-dark);
}
/* ========================================
LOADING STATES
======================================== */
.loading-overlay {
display: none;
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: rgba(255, 255, 255, 0.95);
z-index: 3000;
align-items: center;
justify-content: center;
flex-direction: column;
}
.loading-overlay.show {
display: flex;
}
.spinner {
border: 4px solid var(--border-color);
border-top: 4px solid var(--primary-color);
border-radius: 50%;
width: 60px;
height: 60px;
animation: spin 1s linear infinite;
}
@keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
.loading {
text-align: center;
padding: var(--spacing-xl);
}
.loading i {
font-size: 3rem;
color: var(--primary-color);
margin-bottom: var(--spacing-md);
}
.loading p {
font-size: 1.1rem;
color: var(--text-gray);
}
/* ========================================
ANIMATIONS
======================================== */
.fade-in {
animation: fadeInUp 0.6s ease;
}
@keyframes fadeInUp {
from {
opacity: 0;
transform: translateY(30px);
}
to {
opacity: 1;
transform: translateY(0);
}
}
/* ========================================
FOOTER
======================================== */
.footer {
background: linear-gradient(135deg, var(--text-dark) 0%, #334155 100%);
color: var(--white);
text-align: center;
padding: var(--spacing-lg) 0;
margin-top: var(--spacing-xl);
}
.footer p {
margin: 0.25rem 0;
opacity: 0.9;
}
/* ========================================
RESPONSIVE DESIGN - MOBILE FIRST
======================================== */
/* Tablet and below (768px) */
@media (max-width: 768px) {
/* Typography scaling */
.header-section h1 {
font-size: 1.8rem;
flex-direction: column;
text-align: center;
}
.nav-brand {
font-size: 1.2rem;
}
.nav-subtitle {
font-size: 0.8rem;
}
.card-header h2 {
font-size: 1.3rem;
}
/* Layout adjustments */
.form-grid {
grid-template-columns: 1fr !important;
gap: var(--spacing-md);
}
.button-group {
flex-direction: column;
width: 100%;
}
.btn {
width: 100%;
justify-content: center;
min-height: 44px; /* Touch target size */
}
/* Modal optimizations */
.modal-content {
width: 95%;
max-width: 95vw;
margin: var(--spacing-sm);
padding: var(--spacing-md);
}
/* Result displays */
.result-row {
flex-direction: column;
gap: 0.5rem;
}
.result-card {
margin-bottom: var(--spacing-md);
}
/* Navigation */
.nav-links {
flex-direction: column;
gap: 0.5rem;
width: 100%;
}
.nav-links .btn {
width: 100%;
}
/* Tables - responsive card view */
.table-container {
overflow-x: auto;
-webkit-overflow-scrolling: touch;
}
table {
display: block;
width: 100%;
}
thead {
display: none;
}
tbody {
display: block;
}
tr {
display: block;
margin-bottom: var(--spacing-md);
border: 1px solid var(--border-color);
border-radius: var(--radius-md);
padding: var(--spacing-sm);
}
td {
display: block;
text-align: right;
padding: 0.5rem !important;
border: none;
position: relative;
padding-left: 50% !important;
}
td:before {
content: attr(data-label);
position: absolute;
left: 0.5rem;
width: 45%;
text-align: left;
font-weight: 600;
color: var(--text-color);
}
/* Cards spacing */
.card {
margin-bottom: var(--spacing-md);
}
/* Form inputs */
.form-group {
margin-bottom: var(--spacing-md);
}
input, select, textarea {
font-size: 16px; /* Prevent zoom on iOS */
}
}
/* Mobile phones (480px and below) */
@media (max-width: 480px) {
:root {
--font-size-base: 14px;
--spacing-xs: 0.25rem;
--spacing-sm: 0.5rem;
--spacing-md: 0.75rem;
--spacing-lg: 1rem;
--spacing-xl: 1.5rem;
}
.header-section h1 {
font-size: 1.5rem;
}
.card {
padding: var(--spacing-md);
}
.card-header h2 {
font-size: 1.2rem;
}
/* Ensure touch targets are large enough */
button, .btn, a.btn, input[type="submit"] {
min-height: 44px;
min-width: 44px;
padding: 0.75rem 1rem;
}
/* Input fields for better mobile UX */
input, select, textarea {
font-size: 16px !important; /* Prevent iOS zoom */
min-height: 44px;
padding: 0.75rem;
}
/* Tighter spacing */
.form-grid {
gap: var(--spacing-sm);
}
.modal-content {
width: 100%;
max-width: 100vw;
margin: 0;
border-radius: 0;
min-height: 100vh;
}
}
/* Larger tablets (1024px and up) */
@media (min-width: 1024px) {
.form-grid {
grid-template-columns: repeat(2, 1fr);
}
.container {
max-width: 1200px;
}
}
/* Desktop (1280px and up) */
@media (min-width: 1280px) {
.form-grid {
grid-template-columns: repeat(3, 1fr);
}
.container {
max-width: 1400px;
}
}
/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
/* Larger tap targets for touch */
.btn, button, a, input, select {
min-height: 48px;
min-width: 48px;
}
/* Remove hover effects on touch devices */
.btn:hover, button:hover, a:hover {
transform: none;
}
/* Add active state instead */
.btn:active, button:active {
transform: scale(0.98);
opacity: 0.8;
}
}
/* Print styles for medical reports */
@media print {
.nav-section, .button-group, .modal-close, footer {
display: none !important;
}
.card {
page-break-inside: avoid;
box-shadow: none;
border: 1px solid #ddd;
}
body {
background: white;
}
.container {
max-width: 100%;
}
}
/* ========================================
UTILITY CLASSES
======================================== */
.text-center {
text-align: center;
}
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.hidden {
display: none !important;
}
.visible {
display: block !important;
}
/* ========================================
DEVELOPER CREDIT (FOOTER)
======================================== */
.developer-credit {
margin-top: var(--spacing-md);
padding: var(--spacing-sm) var(--spacing-md);
background: linear-gradient(135deg, rgba(8, 145, 178, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
border-top: 2px solid var(--primary-color);
border-radius: var(--radius-sm);
font-weight: 600;
font-size: 0.95rem;
color: var(--primary-dark);
display: inline-block;
}
.developer-credit i {
color: var(--primary-color);
margin-right: 0.5rem;
animation: code-blink 2s ease-in-out infinite;
}
@keyframes code-blink {
0%, 100% { opacity: 1; }
50% { opacity: 0.5; }
}