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

/* CSS Variables for consistent theming */
:root {
    /* Use existing CSS custom properties from default template */
    --text-primary: var(--body-font-color, #212529);
    --text-secondary: #6c757d;
    --background: var(--page-bg-color, #ffffff);
    --background-light: #f8f9fa;
    --border-color: #dee2e6;
    --success: #28a745;
    --error: #dc3545;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Typography */
    --font-family: var(--body-font-family, 'Inter'), -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: var(--body-font-size, 1rem);
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* Form colors - use existing CSS properties */
    --form-bg: var(--form-bg-color, #f8f9fa);
    --study-image-container-bg: var(--study-image-container-bg-color, #f8f9fa);
    --primary-color: var(--study-header-font-color, #003d7a);
    --secondary-color: #0066cc;
}

/* Base Typography */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1 {
    color: var(--primary-color);
}

/* Container */
.container {
    max-width: 100%;
    margin: 0;
    padding: 0;
}

/* Header */
.header {
    padding: var(--spacing-md);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--background);
}

.logo {
    margin: var(--logo-align, 0 auto);
    width: 400px !important; /* Force twice the original 200px size */
    max-width: none !important; /* Remove any constraints */
    padding: var(--logo-padding, 0);
    max-height: 200px !important; /* Doubled from original constraint */
    height: auto; /* Maintain aspect ratio */
    object-fit: contain; /* Prevent stretching/squishing */
}

.language-picker {
    margin-top: var(--spacing-sm);
}

/* Hero Section */
.hero {
    padding: var(--spacing-lg) var(--spacing-lg);
    background-color: var(--background);
}

.hero-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.hero-left {
    flex: 1;
}

.hero-right {
    flex: 0 0 auto; /* Don't grow or shrink, size to content */
    display: none; /* Hidden on mobile by default */
}

.hero-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    text-align: center;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    padding: 0; /* Remove horizontal padding to align with other content */
    text-align: center;
    font-weight: 600;
    line-height: 1.4;
}

.hero-subtitle p {
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle p:last-child {
    margin-bottom: 0;
}

.hero-subtitle ul {
    text-align: left;
    padding-left: var(--spacing-lg);
}

.hero-subtitle li {
    text-align: left;
}

.study-image-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.studyImageContainer {
    width: fit-content; /* Size to fit image content */
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    background-color: var(--background) !important; /* Match main page background to prevent white overflow */
    background-image: none !important; /* Remove any background image */
    background-repeat: no-repeat !important; /* Ensure no repeat */
    background-size: auto !important; /* Override any background sizing */
}

.study-hero-image {
    width: auto; /* Let image use natural width */
    height: auto;
    max-width: 100%; /* But don't exceed container */
    max-height: 400px; /* Set reasonable max height */
    object-fit: contain; /* Show full image without cropping */
    border-radius: var(--radius-lg);
    display: block; /* Ensure proper display */
}

.study-image-header {
    margin-top: var(--spacing-sm);
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Form Styles */
.enrollment-form {
    max-width: 400px;
    margin: 0 auto var(--spacing-md);
    padding: var(--spacing-md);
    background: #ffffff !important;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* Form elements inherit from existing form component styles */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color 0.2s ease;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.form-input.error {
    border-color: var(--error);
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-primary {
    width: 100%;
    background-color: var(--secondary-color);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
    box-shadow: 0 4px 6px rgba(0, 102, 204, 0.25);
}

.btn-primary:hover {
    background-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(0, 61, 122, 0.35);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Benefits Section */
.benefits {
    padding: var(--spacing-lg) var(--spacing-md);
    background-color: var(--background-light);
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

/* Class applied by JavaScript for 4-benefit grids to force 2x2 layout - desktop only */
@media (min-width: 769px) {
    .benefits-grid.four-items {
        grid-template-columns: repeat(2, 1fr) !important;
        max-width: 800px !important;
    }
}

.benefit {
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.benefit-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.benefit-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    margin-top: 2px;
}

.benefit-icon .marker {
    width: 100%;
    height: 100%;
    fill: var(--primary-color);
}

.benefit-content {
    flex: 1;
}

.benefit-content p {
    margin: 0 0 var(--spacing-xs);
    color: var(--text-primary);
    line-height: 1.5;
}

.benefit-content p:last-child {
    margin-bottom: 0;
}

/* Study Footer Section */
.study-footer-section {
    padding: var(--spacing-lg) var(--spacing-md);
    background-color: var(--background);
}

.study-footer-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: var(--study-footer-font-size, var(--font-size-sm));
    font-style: italic;
    color: var(--study-footer-font-color, var(--text-secondary));
}

.study-footer-content p {
    margin-bottom: var(--spacing-sm);
}

.study-footer-content p:last-child {
    margin-bottom: 0;
}

/* Footer */
.footer {
    padding: var(--spacing-lg) var(--spacing-md);
    background-color: var(--background-light);
    text-align: center;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.castor-logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.castor-logo {
    max-height: 48px;
    width: auto;
}

/* Sticky CTA */
.sticky-cta {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: white;
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transform: translateY(150%);
    transition: transform 0.3s ease;
    display: none;
}

.sticky-cta.visible {
    transform: translateY(0);
}

.sticky-cta .btn {
    margin: 0;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
}

/* Ensure sticky CTA button matches main form button exactly */
.sticky-cta .btn-primary {
    background-color: var(--form-submit-button-bg-color, var(--secondary-color)) !important;
    color: white;
    font-size: var(--font-size-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    width: 100%;
    box-shadow: 0 4px 6px rgba(0, 102, 204, 0.25);
}

.sticky-cta .btn-primary:hover {
    background-color: var(--primary-color) !important;
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(0, 61, 122, 0.35);
}

/* Mobile-specific sticky CTA */
@media (max-width: 768px) {
    .sticky-cta {
        bottom: 0;
        left: 0;
        right: 0;
        border-radius: 0;
        padding: var(--spacing-sm);
    }
    
    .sticky-cta .btn {
        width: 100%;
        font-size: var(--font-size-lg);
        padding: var(--spacing-md) var(--spacing-lg);
    }
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    /* Full width on mobile */
    .container {
        padding: 0;
    }
    
    /* Show sticky CTA on mobile */
    .sticky-cta {
        display: block;
    }
    
    .hero {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .enrollment-form {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
    
    /* Better image sizing on mobile */
    .study-hero-image {
        max-height: 300px; /* Limit height on mobile but allow natural sizing */
        width: auto; /* Allow natural width to maintain aspect ratio */
        max-width: 100%;
    }
    
    /* Stack benefits vertically on small screens */
    .benefits-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .benefit {
        padding: var(--spacing-md);
    }
    
    /* Adjust section spacing */
    .benefits,
    .study-footer-section {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    /* Mobile-specific type sizes */
    .hero-title {
        font-size: 1.75rem;
    }
    
    .logo {
        width: 300px !important; /* Force larger size on mobile */
        max-width: none !important; /* Remove any constraints */
        max-height: 150px !important; /* Much larger on mobile */
        height: auto; /* Ensure aspect ratio is maintained */
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
        padding: 0; /* Remove padding to align with other content */
    }
    
    .section-title {
        font-size: var(--font-size-xl);
    }
}

/* Tablet optimizations */
@media (min-width: 769px) and (max-width: 1024px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-right {
        display: block;
    }
}

/* Desktop optimizations */
@media (min-width: 769px) {
    /* Show hero image on desktop */
    .hero-right {
        display: block;
        /* Size to content, don't expand to fill remaining space */
    }
    
    /* Larger images on desktop */
    .study-hero-image {
        max-height: 500px; /* Allow larger images on desktop */
        width: auto;
        max-width: 100%;
    }
    
    /* Left-align text on desktop */
    .hero-title,
    .hero-subtitle {
        text-align: left;
    }
    
    /* Adjust form for desktop */
    .enrollment-form {
        margin: 0;
        max-width: 450px;
        padding: var(--spacing-md);
    }
    
    /* Full-width button in form container on desktop */
    .enrollment-form .btn-primary {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-lg);
    }
    
    /* Ensure benefits stay in optimal layout */
    .benefits-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    /* Optimize image container for desktop */
    .studyImageContainer {
        width: auto; /* Let content determine width on desktop */
        max-width: 100%; /* But don't exceed parent */
    }
}

/* Large screen optimizations */
@media (min-width: 1200px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    /* Tighter hero section */
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .hero-content {
        gap: var(--spacing-xl);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .form-input {
        border-width: 3px;
    }
    
    .btn-primary {
        border: 2px solid transparent;
    }
}

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

/* Print styles */
@media print {
    .header,
    .footer,
    .sticky-cta {
        display: none;
    }
    
    .enrollment-form {
        box-shadow: none;
        border: 1px solid #000;
    }
}