/* CSS Variables - Triadic Color Scheme */
:root {
    /* Primary Triadic Colors */
    --primary-color: #4A90E2;
    --primary-light: #6BA6F7;
    --primary-dark: #2E5C8A;
    --secondary-color: #E24A4A;
    --secondary-light: #F76B6B;
    --secondary-dark: #8A2E2E;
    --tertiary-color: #4AE290;
    --tertiary-light: #6BF7A6;
    --tertiary-dark: #2E8A5C;
    
    /* Accent Colors */
    --accent-purple: #8A4AE2;
    --accent-orange: #E2904A;
    --accent-pink: #E24A90;
    
    /* Glass Morphism Colors */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: rgba(0, 0, 0, 0.1);
    --glass-backdrop: rgba(255, 255, 255, 0.05);
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --black: #000000;
    --dark-gray: #2C3E50;
    --medium-gray: #95A5A6;
    --light-gray: #ECF0F1;
    --off-white: #FAFBFC;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--tertiary-color) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-orange) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-pink) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0.05) 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.3) 100%);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'IBM Plex Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Borders & Radius */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
    
    /* Shadows */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.2);
    --shadow-glass: 0 8px 32px rgba(31, 38, 135, 0.37);
    
    /* Transitions */
    --transition-fast: 0.2s ease-out;
    --transition-medium: 0.4s ease-out;
    --transition-slow: 0.6s ease-out;
}

/* Global Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    line-height: 1.6;
    color: var(--dark-gray);
    background: var(--off-white);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h5 { font-size: clamp(1.1rem, 2vw, 1.5rem); }
h6 { font-size: clamp(1rem, 1.5vw, 1.25rem); }

p {
    margin-bottom: var(--spacing-sm);
    font-size: clamp(1rem, 1.2vw, 1.1rem);
}

/* Global Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 32px;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
    text-align: center;
    min-width: 140px;
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-medium);
}

.btn:hover:before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    backdrop-filter: blur(10px);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
    backdrop-filter: blur(10px);
}

.btn-outline-light:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.1rem;
    min-width: 160px;
}

/* Particles Background */
#particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(45deg, var(--primary-color), var(--tertiary-color));
    opacity: 0.05;
}

#particles-bg:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 60%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    animation: particleFloat 20s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { 
        transform: translate(0, 0) scale(1); 
        opacity: 0.05;
    }
    50% { 
        transform: translate(-10px, -10px) scale(1.1); 
        opacity: 0.1;
    }
}

/* Glass Morphism Components */
.glassmorphism-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-glass);
    transition: all var(--transition-medium);
}

.glassmorphism-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 48px rgba(31, 38, 135, 0.5);
    background: rgba(255, 255, 255, 0.15);
}

.glassmorphism-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
}

/* Header Styles */
.navbar {
    padding: var(--spacing-sm) 0;
    transition: all var(--transition-medium);
}

.navbar-brand {
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
    text-decoration: none;
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    font-family: var(--font-primary);
    font-weight: 500;
    color: var(--dark-gray) !important;
    margin: 0 var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm) !important;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
    transition: width var(--transition-medium);
}

.nav-link:hover {
    color: var(--primary-color) !important;
    background: rgba(74, 144, 226, 0.1);
}

.nav-link:hover:before {
    width: 80%;
}

/* Scroll Progress */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    z-index: 9999;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    width: 0;
    transition: width 0.1s ease-out;
}

/* Section Padding */
.section-padding {
    padding: var(--spacing-xxl) 0;
}

.section-title {
    color: var(--dark-gray);
    text-align: center;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-subtitle {
    color: var(--medium-gray);
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
}

/* Hero Section */
.hero-section {
    position: relative;
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-section:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-overlay);
    z-index: 1;
}

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

.hero-title {
    color: var(--white);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: heroFadeInUp 1s ease-out;
}

.hero-subtitle {
    color: var(--white);
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    margin-bottom: var(--spacing-lg);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    animation: heroFadeInUp 1s ease-out 0.3s both;
}

.hero-buttons {
    animation: heroFadeInUp 1s ease-out 0.6s both;
}

@keyframes heroFadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* About Section */
.about-content {
    padding: var(--spacing-md);
}

.about-image-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
}

.about-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.about-image-container:hover img {
    transform: scale(1.05);
}

.features-list {
    margin-top: var(--spacing-md);
}

.feature-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.feature-icon {
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    position: relative;
}

.feature-icon:before {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-size: 12px;
    font-weight: bold;
}

/* Mission Section */
.mission-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    height: 100%;
    transition: all var(--transition-medium);
    border: none;
}

.mission-card:hover {
    transform: translateY(-10px);
}

.mission-card .card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
}

.mission-card .card-img-top {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.mission-card:hover .card-img-top {
    transform: scale(1.1);
}

.mission-card .card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.mission-card .card-title {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.mission-card .card-text {
    color: var(--medium-gray);
    line-height: 1.6;
}

/* Research Section */
.research-content {
    padding: var(--spacing-md);
}

.research-image-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.research-image-container img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.research-stats-slider {
    position: relative;
    height: 120px;
    overflow: hidden;
}

.stat-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-medium);
}

.stat-item.active {
    opacity: 1;
    transform: translateY(0);
}

.stat-display {
    text-align: center;
    margin: var(--spacing-md) 0;
}

.stat-number {
    font-size: 4rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: var(--font-primary);
}

/* Resources Section */
.resources-grid {
    display: grid;
    gap: var(--spacing-md);
}

.resource-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-lg);
    transition: all var(--transition-medium);
}

.resource-item:hover {
    transform: translateY(-5px);
}

.resource-item h5 {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
}

.resource-item p {
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
    flex: 1;
}

/* Testimonials Section */
.testimonial-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    height: 100%;
    padding: var(--spacing-lg);
    border: none;
    transition: all var(--transition-medium);
}

.testimonial-card:hover {
    transform: translateY(-8px);
}

.testimonial-card .card-image {
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
}

.testimonial-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--white);
    box-shadow: var(--shadow-md);
    margin: 0 auto;
}

.testimonial-text {
    font-style: italic;
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
    flex: 1;
    line-height: 1.7;
}

.testimonial-author {
    color: var(--dark-gray);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.testimonial-role {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Behind the Scenes Section */
.behind-scenes-content {
    padding: var(--spacing-md);
}

.behind-scenes-gallery img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-medium);
}

.behind-scenes-gallery img:hover {
    transform: scale(1.02);
}

/* Contact Section */
.contact-form-container {
    max-width: 800px;
    margin: 0 auto;
}

.contact-form .form-label {
    font-family: var(--font-primary);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.contact-form .form-control {
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius-sm);
    padding: 12px var(--spacing-sm);
    font-family: var(--font-secondary);
    transition: all var(--transition-fast);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
}

.contact-form .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(74, 144, 226, 0.25);
    outline: none;
    background: rgba(255, 255, 255, 0.95);
}

.contact-info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-lg);
    height: 100%;
}

.contact-info-item h5 {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
}

.contact-info-item p {
    color: var(--medium-gray);
    margin: 0;
}

/* Footer */
.footer {
    background: var(--dark-gray);
    color: var(--light-gray);
    margin-top: var(--spacing-xxl);
}

.footer h5, .footer h6 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

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

.footer .list-unstyled a {
    color: var(--medium-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer .list-unstyled a:hover {
    color: var(--primary-color);
}

.social-links a {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    margin-right: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    transition: all var(--transition-fast);
    color: var(--light-gray);
    font-weight: 500;
}

.social-links a:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.text-light-50 {
    color: rgba(255, 255, 255, 0.7) !important;
}

/* Utility Classes */
.micro-interact {
    transition: all var(--transition-fast);
}

.micro-interact:hover {
    transform: scale(1.02);
}

.parallax-element {
    transition: transform var(--transition-slow);
}

.parallax-element:hover {
    transform: translateZ(0) scale(1.02);
}

/* Success Page Styles */
.success-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.success-content {
    text-align: center;
    max-width: 600px;
    padding: var(--spacing-xxl);
}

.success-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-lg);
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--white);
    animation: successPulse 2s ease-in-out infinite;
}

@keyframes successPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Privacy & Terms Pages */
.legal-content {
    padding-top: 120px;
    max-width: 800px;
    margin: 0 auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.legal-content h2 {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-lg);
}

.legal-content h3 {
    color: var(--primary-color);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.legal-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.legal-content ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.legal-content li {
    margin-bottom: var(--spacing-xs);
}

/* Read More Links */
.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: all var(--transition-fast);
    position: relative;
}

.read-more:after {
    content: '→';
    margin-left: var(--spacing-xs);
    transition: transform var(--transition-fast);
}

.read-more:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

.read-more:hover:after {
    transform: translateX(4px);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-xxl: 3rem;
        --spacing-xl: 2.5rem;
        --spacing-lg: 2rem;
    }
    
    .hero-content {
        padding: var(--spacing-md);
    }
    
    .hero-buttons .btn {
        display: block;
        width: 100%;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-buttons .btn:last-child {
        margin-bottom: 0;
    }
    
    .section-padding {
        padding: var(--spacing-xl) 0;
    }
    
    .navbar-toggler {
        border: none;
        padding: 4px 8px;
    }
    
    .navbar-toggler:focus {
        box-shadow: none;
    }
    
    .stat-number {
        font-size: 3rem;
    }
    
    .research-stats-slider {
        height: 140px;
    }
    
    .testimonial-card {
        margin-bottom: var(--spacing-md);
    }
    
    .about-image-container,
    .research-image-container,
    .behind-scenes-gallery {
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .contact-form-container {
        padding: var(--spacing-md);
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
}

/* High Performance Optimizations */
.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.loading:after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary-color);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Print Styles */
@media print {
    .navbar,
    .footer,
    .btn,
    #particles-bg,
    .scroll-progress {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .section-padding {
        padding: 1rem 0;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    #particles-bg:before {
        animation: none;
    }
}

/* Focus States */
.btn:focus,
.form-control:focus,
.nav-link:focus {
    outline: 3px solid rgba(74, 144, 226, 0.5);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0056b3;
        --secondary-color: #c82333;
        --dark-gray: #000000;
        --medium-gray: #6c757d;
        --light-gray: #dee2e6;
    }
}