:root {
    /* Main Colors */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #f43f5e;
    --color-secondary-dark: #e11d48;
    --color-secondary-light: #fb7185;
    --color-accent: #14b8a6;
    --color-accent-dark: #0d9488;
    --color-accent-light: #2dd4bf;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-black: #111111;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* Gradients */
    --gradient-primary: linear-gradient(145deg, var(--color-primary), var(--color-primary-dark));
    --gradient-secondary: linear-gradient(145deg, var(--color-secondary), var(--color-secondary-dark));
    --gradient-accent: linear-gradient(145deg, var(--color-accent), var(--color-accent-dark));
    --gradient-primary-to-secondary: linear-gradient(145deg, var(--color-primary), var(--color-secondary));
    --gradient-primary-to-accent: linear-gradient(145deg, var(--color-primary), var(--color-accent));
    --gradient-black-transparent: linear-gradient(to bottom, rgba(0,0,0,0.8), rgba(0,0,0,0.4));
    
    /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --shadow-brutal: 6px 6px 0 0 var(--color-black);
    
    /* Typography */
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Nunito', sans-serif;
    
    /* Borders */
    --border-radius-sm: 0.125rem;
    --border-radius: 0.25rem;
    --border-radius-md: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 0.75rem;
    --border-radius-2xl: 1rem;
    --border-radius-3xl: 1.5rem;
    --border-radius-full: 9999px;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    
    /* Transitions */
    --transition-fast: 150ms;
    --transition-normal: 300ms;
    --transition-slow: 500ms;
    --transition-very-slow: 1000ms;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-gray-800);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

p {
    margin-bottom: var(--spacing-4);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-normal), transform var(--transition-normal);
}

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

/* Utility Classes */
.gradient-text {
    

    color: #121212;

}

.gradient-bg {
    background: var(--gradient-primary-to-secondary);
    color: var(--color-white);
}

.gradient-bg-alt {
    background: var(--gradient-primary-to-accent);
    color: var(--color-white);
}

.title-underline {
    height: 4px;
    width: 70px;
    background: var(--gradient-primary-to-secondary);
    margin: 0 auto;
    margin-bottom: var(--spacing-8);
}

.title-underline.light {
    background: var(--color-white);
    opacity: 0.7;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-4);
    position: relative;
    z-index: 1;
}

/* Neo-Brutalist Elements */
.neo-brutal-box {
    background-color: var(--color-white);
    border: 2px solid var(--color-black);
    box-shadow: var(--shadow-brutal);
    border-radius: var(--border-radius);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    color: #121212;
}

.neo-brutal-box:hover {
    transform: translate(-2px, -2px);
    box-shadow: 8px 8px 0 0 var(--color-black);
}

/* Parallax Elements */
.parallax-bg {
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    position: relative;
}

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

/* Header & Navigation */
.header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-4) 0;
    transition: padding var(--transition-normal), background-color var(--transition-normal);
    z-index: 1000;
}

.header.scrolled {
    padding: var(--spacing-2) 0;
    background-color: rgba(255, 255, 255, 0.98);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
}

.navbar-nav .nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--color-gray-800);
    padding: var(--spacing-2) var(--spacing-4);
    position: relative;
    transition: color var(--transition-normal);
}

.navbar-nav .nav-link:hover {
    color: var(--color-primary);
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary-to-secondary);
    transition: width var(--transition-normal), left var(--transition-normal);
}

.navbar-nav .nav-link:hover::after {
    width: 80%;
    left: 10%;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: var(--spacing-20) 0;
    overflow: hidden;
}

.hero-section .overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-black-transparent);
    z-index: 0;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    font-size: 4rem;
    margin-bottom: var(--spacing-4);
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-section .lead {
    font-size: 1.5rem;
    max-width: 700px;
    margin-bottom: var(--spacing-6);
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

/* Mission Section */
.mission-section {
    padding: var(--spacing-16) 0;
    position: relative;
}

.mission-image {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.mission-content {
    padding: var(--spacing-8);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.mission-content h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-4);
}

/* Projects Section */
.projects-section {
    padding: var(--spacing-16) 0;
    position: relative;
    overflow: hidden;
}

.custom-slider {
    margin-bottom: var(--spacing-8);
}

.card {
    height: 100%;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.card-image {
    width: 100%;
    overflow: hidden;
    text-align: center;
}

.card-image img {
    transition: transform var(--transition-slow);
    width: 100%;
    height: 250px;
    object-fit: cover;
    margin: 0 auto;
}

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

.card-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
}

.card-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-3);
}

/* Statistics Section */
.statistics-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-gray-100);
    position: relative;
}

.stat-card {
    text-align: center;
    padding: var(--spacing-8);
    height: 100%;
}

.stat-card h3 {
    font-size: 3rem;
    margin-bottom: var(--spacing-2);
}

/* Research Section */
.research-section {
    padding: var(--spacing-16) 0;
    position: relative;
    overflow: hidden;
}

.research-content {
    padding: var(--spacing-4);
}

.research-image {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.research-image img {
    width: 100%;
    height: auto;
    transition: transform var(--transition-slow);
    transform-origin: center center;
}

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

/* Behind Scenes Section */
.behind-scenes-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-gray-100);
    position: relative;
}

.scene-card {
    overflow: hidden;
    margin-bottom: var(--spacing-4);
}

.image-container {
    overflow: hidden;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.image-container img {
    transition: transform var(--transition-slow);
    transform-origin: center center;
}

.scene-card:hover .image-container img {
    transform: scale(1.1);
}

/* Pricing Section */
.pricing-section {
    padding: var(--spacing-16) 0;
    position: relative;
    overflow: hidden;
}

.pricing-card {
    transition: transform var(--transition-normal);
    height: 100%;
}

.pricing-card.featured {
    transform: scale(1.05);
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-2xl);
}

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

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-card .card-header {
    background: var(--gradient-primary);
    color: var(--color-white);
    position: relative;
}

.pricing-card.featured .card-header {
    background: var(--gradient-primary-to-secondary);
}

.price {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    margin: var(--spacing-3) 0;
    position: relative;
}

.price .currency {
    font-size: 1.5rem;
    position: relative;
    top: -15px;
    margin-right: 5px;
}

.price .period {
    font-size: 1rem;
    color: rgba(255,255,255,0.8);
    position: relative;
    top: -5px;
}

.pricing-card ul li {
    color: #121212;
    margin-bottom: var(--spacing-3);
    display: flex;
    align-items: center;
}

.pricing-card ul li i {
    color: var(--color-primary);
    margin-right: var(--spacing-2);
    font-size: 1.2rem;
}

/* FAQ Section */
.faq-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-gray-100);
    position: relative;
}

.accordion-item {
    border: none;
    margin-bottom: var(--spacing-4);
}

.accordion-button {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    box-shadow: none;
    padding: var(--spacing-4) var(--spacing-6);
}

.accordion-button:not(.collapsed) {
    color: var(--color-primary);
    background-color: var(--color-white);
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: none;
    border-color: rgba(99, 102, 241, 0.25);
}

.accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%236366f1'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    transform: rotate(-180deg);
}

.accordion-body {
    padding: var(--spacing-4) var(--spacing-6);
    color: var(--color-gray-700);
}

/* Contact Section */
.contact-section {
    padding: var(--spacing-16) 0;
    position: relative;
    overflow: hidden;
}

.contact-info {
    color: var(--color-gray-800);
    height: 100%;
}

.contact-item {
    margin-bottom: var(--spacing-4);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-1);
}

.contact-form {
    height: 100%;
}

.contact-form h3 {
    margin-bottom: var(--spacing-6);
}

.form-control, .form-select {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--border-radius);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.form-control:focus, .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.25);
}

.form-label {
    font-weight: 600;
}

.form-check-input:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.form-check-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.25);
}

/* Footer */
.footer {
    padding: var(--spacing-12) 0 var(--spacing-8);
}

.footer h3, .footer h4 {
    margin-bottom: var(--spacing-4);
}

.footer a {
    color: var(--color-gray-300);
    transition: color var(--transition-normal);
}

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

.social-links a {
    display: inline-block;
    margin-right: var(--spacing-3);
    font-family: var(--font-heading);
    font-weight: 500;
    transition: transform var(--transition-normal), color var(--transition-normal);
}

.social-links a:hover {
    transform: translateY(-3px);
}

/* Button Styles */
.btn, button, input[type='submit'] {
    font-family: var(--font-heading);
    font-weight: 500;
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--border-radius);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal), color var(--transition-normal);
    box-shadow: var(--shadow-md);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: height var(--transition-normal);
    z-index: -1;
}

.btn:hover::after {
    height: 100%;
}

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

.btn:active {
    transform: translateY(1px);
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline-primary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-outline-light {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-outline-light:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
}

.btn-light {
    background-color: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
}

.btn-light:hover {
    background-color: var(--color-gray-100);
    color: var(--color-primary-dark);
    border-color: var(--color-gray-100);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: 1.125rem;
}

/* Resources Section */
.resources-section {
    padding: var(--spacing-16) 0;
    background-color: var(--color-white);
    position: relative;
}

.resource-card {
    height: 100%;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.resource-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

/* Special Pages */
.success-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.success-content {
    max-width: 800px;
    padding: var(--spacing-8);
}

.privacy-page, .terms-page {
    padding-top: 100px;
    padding-bottom: var(--spacing-16);
}

.privacy-content, .terms-content {
    background-color: var(--color-white);
    padding: var(--spacing-8);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

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

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.animate-fadeInUp {
    animation: fadeInUp var(--transition-slow) both;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* Media Queries */
@media (max-width: 991.98px) {
    .hero-section h1 {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .card-image img {
        height: 200px;
    }
    
    .scene-card .row {
        flex-direction: column;
    }
    
    .image-container {
        border-radius: var(--border-radius) var(--border-radius) 0 0;
        height: 200px !important;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-10px);
    }
}

@media (max-width: 767.98px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-section .lead {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-3);
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 575.98px) {
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .mission-content, .contact-info, .contact-form {
        padding: var(--spacing-4);
    }
    
    .card-content {
        padding: var(--spacing-3) !important;
    }
    
    .stat-card {
        padding: var(--spacing-4);
    }
    
    .stat-card h3 {
        font-size: 2.5rem;
    }
}