/* 
 * Paradigm Pet Professionals - Main Styles
 * This file contains the base styles for the Paradigm Pet Professionals website
 * Strictly following the brand color specifications:
 *   Primary: Midnight Blue (#003B6D), Blue Sky (#6699CC)
 *   Secondary: Dim Gray (#676767), Silver (#BDBDBD)
 */

/* CSS Variables for consistent theming */
:root {
    /* Primary Colors from specs */
    --midnight-blue: #003B6D;
    --blue-sky: #6699CC;
    
    /* Secondary Colors from specs */
    --dim-gray: #676767;
    --silver: #BDBDBD;
    
    /* Additional UI Colors */
    --white: #FFFFFF;
    --light-bg: #F8F9FA;
    --off-white: #F5F5F7;
    --success: #4CAF50;
    --warning: #FFC107;
    --error: #F44336;
    
    /* Typography */
    --font-primary: 'Open Sans', Arial, sans-serif;
    --font-heading: 'Montserrat', 'Helvetica Neue', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    
    /* Box Shadow */
    --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-focus: 0 0 0 3px rgba(102, 153, 204, 0.5);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.7;
    color: var(--dim-gray);
    background-color: var(--light-bg);
    font-size: 16px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    margin-bottom: var(--spacing-md);
    color: var(--midnight-blue);
    font-weight: 700;
    line-height: 1.3;
}

h1 {
    font-size: 2.75rem;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.25rem;
    margin-top: var(--spacing-lg);
    color: var(--midnight-blue);
    position: relative;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.75rem;
    margin-top: var(--spacing-md);
    color: var(--blue-sky);
}

h4 {
    font-size: 1.25rem;
    color: var(--midnight-blue);
}

p {
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
    color: #333333; /* Darker text for better visibility */
}

a {
    color: var(--blue-sky);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

a:hover, a:focus {
    color: var(--midnight-blue);
}

a:focus {
    outline: none;
    box-shadow: var(--shadow-focus);
}

strong, b {
    font-weight: 600;
    color: var(--midnight-blue);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Skip Link - Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--midnight-blue);
    color: white;
    padding: 8px;
    z-index: 1001;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
    outline: none;
}

/* Header */
header {
    background-color: var(--midnight-blue);
    color: var(--white);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    transition: all 0.3s ease;
}

header.scrolled {
    padding: calc(var(--spacing-md) / 1.5) 0;
    box-shadow: var(--shadow-lg);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.02);
}

.logo img {
    height: 50px;
    margin-right: var(--spacing-sm);
    transition: transform 0.3s ease;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

/* Main Navigation */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.main-nav li {
    position: relative;
}

.main-nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
    display: inline-block;
}

.main-nav a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--blue-sky);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.main-nav a:hover::after, 
.main-nav a:focus::after,
.main-nav a.active::after {
    width: 80%;
}

.main-nav a:hover, 
.main-nav a:focus {
    color: var(--blue-sky);
}

.main-nav a.active {
    color: var(--blue-sky);
}

.main-nav a.btn {
    background-color: var(--blue-sky);
    border: none;
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    transition: all 0.3s ease;
}

.main-nav a.btn:hover,
.main-nav a.btn:focus {
    background-color: var(--white);
    color: var(--midnight-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Mobile menu button */
.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    transition: all 0.3s ease;
    border-radius: var(--border-radius-sm);
}

.mobile-menu-btn:hover,
.mobile-menu-btn:focus {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Breadcrumb Navigation */
.breadcrumb {
    padding: var(--spacing-md) 0;
    font-size: 0.9rem;
}

.breadcrumb ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    margin: 0;
    padding: 0;
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    margin: 0 var(--spacing-sm);
    color: var(--silver);
}

.breadcrumb a {
    color: var(--blue-sky);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb li[aria-current="page"] {
    color: var(--dim-gray);
    font-weight: 600;
}

/* Main Content */
main {
    padding-top: 80px; /* Account for fixed header */
    min-height: calc(100vh - 150px); /* Ensure footer is at bottom */
    overflow-x: hidden;
}

/* Hero Section */
.hero {
    position: relative;
    background-color: var(--midnight-blue);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.2;
    transition: transform 10s ease;
}

.hero:hover .hero-image {
    transform: scale(1.05);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    animation: fadeInDown 0.8s ease;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
    color: var(--white); /* Ensure hero text is visible */
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--blue-sky);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.1);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.3s ease;
    z-index: -1;
}

.btn:hover, .btn:focus {
    background-color: var(--midnight-blue);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    color: var(--white);
    text-decoration: none;
}

.btn:hover::before, .btn:focus::before {
    transform: scaleY(1);
}

.btn:active {
    transform: translateY(-1px);
}

.btn-primary {
    background-color: var(--blue-sky);
}

.btn-secondary {
    background-color: var(--dim-gray);
}

.btn-lg {
    font-size: 1.1rem;
    padding: var(--spacing-md) calc(var(--spacing-lg) * 1.5);
}

/* Section Styling */
section {
    padding: var(--spacing-lg) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-divider {
    height: 4px;
    width: 60px;
    background-color: var(--blue-sky);
    margin: var(--spacing-md) auto var(--spacing-lg);
    border-radius: 2px;
}

/* Content Section Styling */
.content-section {
    margin-bottom: var(--spacing-xl);
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.content-section:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.card {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card.interactive {
    cursor: pointer;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-image {
    transform: scale(1.05);
}

.card-content {
    padding: var(--spacing-lg);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-title {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.card-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--blue-sky);
    transition: width 0.3s ease;
}

.card:hover .card-title::after {
    width: 80px;
}

.card .btn {
    margin-top: auto;
    align-self: flex-start;
}

.card p {
    color: #333333; /* Ensure text in cards is visible */
}

/* Two Column Layout */
.two-column {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.column {
    flex: 1;
    min-width: 0; /* Fix for overflow */
}

/* Feature Boxes */
.feature-box {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--off-white);
    border-radius: var(--border-radius-md);
    transition: all 0.3s ease;
}

.feature-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2rem;
    color: var(--blue-sky);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    border-radius: 50%;
    background-color: rgba(102, 153, 204, 0.1);
    transition: all 0.3s ease;
}

.feature-box:hover .feature-icon {
    transform: scale(1.1);
    background-color: rgba(102, 153, 204, 0.2);
}

.feature-content {
    flex-grow: 1;
}

.feature-content h3 {
    margin-top: 0;
}

/* Highlight Box */
.highlight-box {
    background-color: rgba(102, 153, 204, 0.1);
    border-left: 4px solid var(--blue-sky);
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

.highlight-box h3 {
    margin-top: 0;
    color: var(--midnight-blue);
}

/* Alert Box */
.alert-box {
    background-color: rgba(255, 193, 7, 0.1);
    border-left: 4px solid var(--warning);
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

/* Lists */
ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

ul li, ol li {
    margin-bottom: var(--spacing-sm);
    position: relative;
    color: #333333; /* Ensure list items are visible */
}

ul.stagger-reveal li {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--midnight-blue);
}

input, 
select, 
textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--silver);
    border-radius: var(--border-radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    color: #333333; /* Darker text for form fields */
    background-color: var(--white);
    transition: all 0.3s ease;
}

input:hover, 
select:hover, 
textarea:hover {
    border-color: var(--blue-sky);
}

input:focus, 
select:focus, 
textarea:focus {
    outline: none;
    border-color: var(--blue-sky);
    box-shadow: 0 0 0 3px rgba(102, 153, 204, 0.25);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-row .form-group {
    flex: 1 0 calc(50% - var(--spacing-md));
    margin-bottom: var(--spacing-sm);
}

/* Form validation styles */
.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--error);
    background-color: rgba(244, 67, 54, 0.05);
}

.form-group.success input,
.form-group.success select,
.form-group.success textarea {
    border-color: var(--success);
    background-color: rgba(76, 175, 80, 0.05);
}

.error-message {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
}

.error-message::before {
    content: '⚠️';
    margin-right: var(--spacing-xs);
}

/* Checkbox and Radio Styling */
.checkbox-label,
.radio-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-bottom: var(--spacing-sm);
    font-weight: normal;
}

input[type="checkbox"],
input[type="radio"] {
    width: auto;
    margin-right: var(--spacing-sm);
    cursor: pointer;
}

.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.radio-group label {
    margin-right: var(--spacing-lg);
}

/* Fieldset Styling */
fieldset {
    border: 1px solid var(--silver);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

legend {
    padding: 0 var(--spacing-sm);
    font-weight: 600;
    color: var(--midnight-blue);
    font-size: 1.1rem;
}

/* Required Field Indicator */
.required {
    color: var(--error);
}

.form-note {
    font-size: 0.9rem;
    color: var(--dim-gray);
    margin-top: var(--spacing-md);
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Form Success Message */
.form-success {
    padding: var(--spacing-lg);
    background-color: rgba(76, 175, 80, 0.1);
    border-radius: var(--border-radius-lg);
    text-align: center;
    display: none;
}

.form-success h3 {
    color: var(--success);
}

/* Accordion Styling */
.accordion {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.accordion-item {
    border-bottom: 1px solid var(--silver);
    background-color: var(--white);
}

.accordion-header {
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    position: relative;
    font-weight: 600;
    color: var(--midnight-blue);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
    user-select: none;
}

.accordion-header::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform 0.3s ease;
}

.accordion-header.active {
    background-color: rgba(102, 153, 204, 0.1);
}

.accordion-header:hover {
    background-color: rgba(102, 153, 204, 0.05);
}

.accordion-header.active::after {
    transform: rotate(45deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-in-out;
    background-color: var(--white);
    padding: 0 var(--spacing-lg);
}

.accordion-header.active + .accordion-content {
    max-height: 500px;
    padding-bottom: var(--spacing-lg);
}

.accordion-content p {
    color: #333333; /* Ensure accordion text is visible */
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0 var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

th, td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--silver);
}

thead th {
    background-color: var(--midnight-blue);
    color: var(--white);
    font-weight: 600;
}

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

tbody tr:hover {
    background-color: rgba(102, 153, 204, 0.05);
}

tbody td {
    color: #333333; /* Ensure table text is visible */
}

/* Call-to-action Section */
.cta-section {
    background-color: var(--midnight-blue);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 59, 109, 0.9) 0%, rgba(102, 153, 204, 0.8) 100%);
    z-index: 1;
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
    font-size: 1.1rem;
}

.cta-section .btn {
    background-color: var(--white);
    color: var(--midnight-blue);
}

.cta-section .btn:hover {
    background-color: var(--blue-sky);
    color: var(--white);
}

/* Footer */
footer {
    background-color: var(--midnight-blue); /* Changed from dim-gray for better contrast */
    color: var(--white);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
    position: relative;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.footer-column {
    flex: 1;
    min-width: 250px;
}

.footer-column h3 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: 1.2rem;
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 3px;
    background-color: var(--blue-sky);
}

.footer-nav ul {
    list-style: none;
    padding-left: 0;
}

.footer-nav li {
    margin-bottom: var(--spacing-xs);
}

.footer-nav a {
    color: var(--silver);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-nav a:hover, .footer-nav a:focus {
    color: var(--white);
    transform: translateX(5px);
}

address p {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    color: var(--silver);
}

address i {
    margin-right: var(--spacing-sm);
    color: var(--blue-sky);
}

address a {
    color: var(--silver);
}

address a:hover {
    color: var(--white);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--blue-sky);
    transform: translateY(-3px);
}

.copyright {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
    color: var(--silver);
}

.copyright p {
    margin-bottom: var(--spacing-sm);
    color: var(--silver);
}

.copyright a {
    color: var(--silver);
    text-decoration: none;
}

.copyright a:hover {
    color: var(--white);
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: var(--blue-sky);
    color: var(--white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 99;
    box-shadow: var(--shadow-md);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background-color: var(--midnight-blue);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Resource Links */
.resource-links ul {
    list-style: none;
    padding-left: 0;
}

.resource-links li {
    margin-bottom: var(--spacing-sm);
    transition: all 0.3s ease;
}

.resource-links a {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm) 0;
    transition: all 0.3s ease;
    color: var(--blue-sky); /* Ensure links are visible */
}

.resource-links a:hover {
    transform: translateX(5px);
    color: var(--midnight-blue);
}

.resource-links a i {
    margin-left: var(--spacing-xs);
    font-size: 0.8rem;
}

/* Age Selector */
.age-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
    justify-content: center;
}

.age-btn {
    background-color: var(--silver);
    color: var(--midnight-blue); /* Darker text for better contrast */
    border: 2px solid transparent;
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 600;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
}

.age-btn:hover {
    background-color: var(--blue-sky);
    color: var(--white);
}

.age-btn.active {
    background-color: var(--midnight-blue);
    color: var(--white);
    border-color: var(--blue-sky);
}

/* Loader */
.loader {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
    margin-right: var(--spacing-sm);
}

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

/* Additional Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Accessibility Focus Styles */
:focus-visible {
    outline: 3px solid var(--blue-sky);
    outline-offset: 2px;
}

/* Remove outline for mouse users but keep it for keyboard */
:focus:not(:focus-visible) {
    outline: none;
}

/* Section image styling */
.section-image {
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    max-width: 100%;
    margin-bottom: var(--spacing-md);
}

/* Note text */
.note {
    font-size: 0.9rem;
    font-style: italic;
    color: var(--dim-gray);
    margin-top: var(--spacing-md);
}

/* Highlight text */
.highlight-text {
    background-color: rgba(102, 153, 204, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    border-left: 4px solid var(--blue-sky);
}