/* ============================================
   CSS Variables - Design System
   ============================================ */
:root {
    /* Neutral Color Palette */
    --color-primary: #2c3e50;
    --color-primary-dark: #1a252f;
    --color-primary-light: #34495e;
    
    --color-secondary: #7f8c8d;
    --color-secondary-dark: #5d6d6e;
    --color-secondary-light: #95a5a6;
    
    --color-accent: #3498db;
    --color-accent-dark: #2980b9;
    --color-accent-light: #5dade2;
    
    --color-text-primary: #2c3e50;
    --color-text-secondary: #7f8c8d;
    --color-text-light: #ecf0f1;
    --color-text-white: #ffffff;
    
    --color-background: #ecf0f1;
    --color-background-light: #f8f9fa;
    --color-background-dark: #bdc3c7;
    
    --color-border: #d5dbdb;
    --color-shadow-light: rgba(0, 0, 0, 0.05);
    --color-shadow-medium: rgba(0, 0, 0, 0.1);
    --color-shadow-dark: rgba(0, 0, 0, 0.2);
    
    /* Neumorphic Shadows */
    --shadow-neumorphic: 8px 8px 16px rgba(0, 0, 0, 0.1),
                         -8px -8px 16px rgba(255, 255, 255, 0.7);
    --shadow-neumorphic-inset: inset 6px 6px 12px rgba(0, 0, 0, 0.1),
                                inset -6px -6px 12px rgba(255, 255, 255, 0.7);
    --shadow-neumorphic-hover: 12px 12px 24px rgba(0, 0, 0, 0.12),
                               -12px -12px 24px rgba(255, 255, 255, 0.8);
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Source Sans Pro', sans-serif;
    
    --font-size-h1: 3.5rem;
    --font-size-h2: 2.5rem;
    --font-size-h3: 1.75rem;
    --font-size-h4: 1.5rem;
    --font-size-body: 1.125rem;
    --font-size-small: 0.875rem;
    
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border Radius */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index */
    --z-index-dropdown: 1000;
    --z-index-sticky: 1020;
    --z-index-fixed: 1030;
    --z-index-modal: 1050;
    --z-index-tooltip: 1070;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

h1 {
    font-size: var(--font-size-h1);
}

h2 {
    font-size: var(--font-size-h2);
}

h3 {
    font-size: var(--font-size-h3);
}

h4 {
    font-size: var(--font-size-h4);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-dark);
    text-decoration: none;
}

/* ============================================
   Global Button Styles
   ============================================ */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-neumorphic);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: var(--color-text-white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-accent-dark) 0%, var(--color-accent) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-neumorphic-hover);
    color: var(--color-text-white);
}

.btn-outline-primary {
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
    box-shadow: none;
}

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

.btn-outline-light {
    background: transparent;
    color: var(--color-text-white);
    border: 2px solid var(--color-text-white);
    box-shadow: none;
}

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

.btn-lg {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

button,
input[type='submit'] {
    font-family: var(--font-body);
}

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

.read-more-link::after,
.link-primary::after {
    content: '→';
    font-size: 1.2em;
    transition: transform var(--transition-fast);
}

.read-more-link:hover,
.link-primary:hover {
    color: var(--color-accent-dark);
    gap: var(--spacing-sm);
}

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

/* ============================================
   Utility Classes
   ============================================ */
.card-neumorphic {
    background: var(--color-background);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-neumorphic);
    transition: all var(--transition-normal);
}

.card-neumorphic:hover {
    box-shadow: var(--shadow-neumorphic-hover);
    transform: translateY(-4px);
}

.shadow-neumorphic {
    box-shadow: var(--shadow-neumorphic);
}

.section-title {
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.section-description {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

.title-divider {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    margin: var(--spacing-md) auto var(--spacing-lg);
    border-radius: 2px;
}

.content-subtitle {
    font-size: var(--font-size-h3);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.content-text {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.image-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-md);
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.icon-animated {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    transition: transform var(--transition-normal);
}

.card-neumorphic:hover .icon-animated {
    transform: scale(1.1) rotate(5deg);
}

/* ============================================
   Particles Canvas
   ============================================ */
#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* ============================================
   Header & Navigation
   ============================================ */
.header-main {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(236, 240, 241, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px var(--color-shadow-light);
    z-index: var(--z-index-fixed);
    transition: all var(--transition-normal);
}

.header-main.scrolled {
    background: rgba(236, 240, 241, 0.98);
    box-shadow: 0 4px 20px var(--color-shadow-medium);
}

.navbar {
    padding: var(--spacing-sm) 0;
}

.navbar-brand {
    transition: transform var(--transition-fast);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin: 0;
}

.nav-link {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-xs) var(--spacing-sm);
    margin: 0 var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-accent);
    background: rgba(52, 152, 219, 0.1);
}

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

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: scroll;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.4) 100%);
    z-index: 0;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    text-align: center;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-white);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: var(--color-text-white);
    margin-bottom: var(--spacing-md);
    font-weight: var(--font-weight-semibold);
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}

.hero-description {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    color: var(--color-text-white);
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.8;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   About Section
   ============================================ */
.about-section {
    padding: var(--spacing-xxl) 0;
    background: var(--color-background-light);
}

.about-content {
    padding: var(--spacing-lg);
}

/* ============================================
   Features Section
   ============================================ */
.features-section {
    padding: var(--spacing-xxl) 0;
    background: var(--color-background);
}

.feature-card {
    height: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.feature-card .card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    flex-shrink: 0;
}

.feature-card .card-image .image-container {
    height: 100%;
}

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

.feature-card .card-title {
    font-size: var(--font-size-h4);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    margin-top: 0;
}

.feature-card .card-text {
    color: var(--color-text-secondary);
    line-height: 1.7;
    flex-grow: 1;
}

/* ============================================
   Statistics Section
   ============================================ */
.statistics-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.stat-card {
    padding: var(--spacing-xl) var(--spacing-lg);
    background: rgba(236, 240, 241, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-white);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: var(--font-size-body);
    color: var(--color-text-light);
    font-weight: var(--font-weight-semibold);
}

/* ============================================
   Awards Section
   ============================================ */
.awards-section {
    padding: var(--spacing-xxl) 0;
    background: var(--color-background-light);
}

.award-card {
    height: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.award-card .card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    flex-shrink: 0;
}

.award-card .card-image .image-container {
    height: 100%;
}

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

.award-title {
    font-size: var(--font-size-h4);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.award-org {
    font-size: var(--font-size-small);
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
}

.award-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
    flex-grow: 1;
}

/* ============================================
   Instructors/Team Section
   ============================================ */
.instructors-section {
    padding: var(--spacing-xxl) 0;
    background: var(--color-background);
}

.instructor-card {
    height: 100%;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.instructor-card .card-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    flex-shrink: 0;
}

.instructor-card .card-image .image-container {
    height: 100%;
}

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

.instructor-name {
    font-size: var(--font-size-h4);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.instructor-role {
    font-size: var(--font-size-small);
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
}

.instructor-bio {
    color: var(--color-text-secondary);
    line-height: 1.7;
    flex-grow: 1;
}

/* ============================================
   Research/Insights Section
   ============================================ */
.insights-section {
    padding: var(--spacing-xxl) 0;
    background: var(--color-background-light);
}

.carousel-container {
    position: relative;
    overflow: hidden;
}

.insights-carousel {
    display: flex;
    transition: transform var(--transition-slow);
}

.insight-slide {
    min-width: 100%;
    padding: var(--spacing-lg);
}

.insight-slide img {
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-neumorphic);
}

.insight-title {
    font-size: var(--font-size-h3);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.insight-text {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: var(--font-size-body);
}

.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-background);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 2rem;
    color: var(--color-text-primary);
    cursor: pointer;
    box-shadow: var(--shadow-neumorphic);
    transition: all var(--transition-fast);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-control:hover {
    box-shadow: var(--shadow-neumorphic-hover);
    transform: translateY(-50%) scale(1.1);
}

.carousel-control.prev {
    left: 20px;
}

.carousel-control.next {
    right: 20px;
}

/* ============================================
   Resources Section
   ============================================ */
.resources-section {
    padding: var(--spacing-xxl) 0;
    background: var(--color-background);
}

.resource-card {
    height: 100%;
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.resource-card .card-content {
    width: 100%;
}

.resource-title {
    font-size: var(--font-size-h4);
    margin-bottom: var(--spacing-md);
}

.resource-title a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.resource-title a:hover {
    color: var(--color-accent);
}

.resource-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-section {
    padding: var(--spacing-xxl) 0;
    background: var(--color-background-light);
}

.contact-info {
    height: 100%;
}

.contact-subtitle {
    font-size: var(--font-size-h3);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.info-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    color: var(--color-text-secondary);
}

.info-item strong {
    color: var(--color-text-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.info-item a {
    color: var(--color-accent);
    text-decoration: none;
}

.info-item a:hover {
    color: var(--color-accent-dark);
    text-decoration: underline;
}

.contact-form-container {
    height: 100%;
}

.contact-form .form-label {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-form .form-control {
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1rem;
    font-size: var(--font-size-body);
    transition: all var(--transition-fast);
    background: var(--color-background-light);
}

.contact-form .form-control:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    outline: none;
}

.contact-form textarea.form-control {
    resize: vertical;
    min-height: 150px;
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-section {
    padding: var(--spacing-xxl) 0;
    background: var(--color-background);
}

.accordion-item {
    border: none;
    background: transparent;
}

.accordion-header {
    margin-bottom: 0;
}

.accordion-button {
    background: var(--color-background);
    border: none;
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--font-heading);
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-neumorphic);
}

.accordion-button:not(.collapsed) {
    background: var(--color-background);
    color: var(--color-accent);
    box-shadow: var(--shadow-neumorphic-inset);
}

.accordion-button:focus {
    box-shadow: var(--shadow-neumorphic);
    border: none;
}

.accordion-button::after {
    background-image: none;
    content: '+';
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    transition: transform var(--transition-fast);
}

.accordion-button:not(.collapsed)::after {
    content: '−';
    transform: rotate(0deg);
}

.accordion-body {
    padding: var(--spacing-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: var(--font-size-body);
}

/* ============================================
   Footer
   ============================================ */
.footer-main {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-text-light);
}

.footer-title {
    font-size: var(--font-size-h3);
    color: var(--color-text-white);
    margin-bottom: var(--spacing-md);
}

.footer-subtitle {
    font-size: var(--font-size-h4);
    color: var(--color-text-white);
    margin-bottom: var(--spacing-md);
}

.footer-text {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

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

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-white);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-fast);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-social a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    color: var(--color-text-white);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-text-light);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--color-text-white);
    transform: translateX(5px);
}

.footer-contact {
    color: var(--color-text-light);
    line-height: 1.9;
}

.footer-contact strong {
    color: var(--color-text-white);
    display: block;
    margin-top: var(--spacing-sm);
}

.footer-contact a {
    color: var(--color-accent-light);
    text-decoration: none;
}

.footer-contact a:hover {
    color: var(--color-text-white);
    text-decoration: underline;
}

.footer-bottom {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    color: var(--color-text-light);
    margin: 0;
}

/* ============================================
   Success Page
   ============================================ */
.success-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-background-light) 100%);
    flex-direction: column;
}

.success-card {
    max-width: 600px;
    width: 100%;
    padding: var(--spacing-xxl);
    text-align: center;
}

.success-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-lg);
    animation: scaleIn 0.5s ease-out;
}

.success-title {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.success-message {
    color: var(--color-text-secondary);
    font-size: var(--font-size-body);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

@keyframes scaleIn {
    from {
        transform: scale(0);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* ============================================
   Privacy & Terms Pages
   ============================================ */
.privacy-section,
.terms-section {
    padding-top: 100px;
    padding-bottom: var(--spacing-xxl);
    background: var(--color-background-light);
}

.privacy-content,
.terms-content {
    background: var(--color-background);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-neumorphic);
    max-width: 900px;
    margin: 0 auto;
}

.privacy-content h2,
.privacy-content h3,
.terms-content h2,
.terms-content h3 {
    color: var(--color-text-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.privacy-content p,
.terms-content p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.privacy-content ul,
.terms-content ul {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 991px) {
    :root {
        --font-size-h1: 2.5rem;
        --font-size-h2: 2rem;
        --font-size-h3: 1.5rem;
        --font-size-h4: 1.25rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .carousel-control {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    
    .carousel-control.prev {
        left: 10px;
    }
    
    .carousel-control.next {
        right: 10px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 767px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-xxl: 3rem;
    }
    
    .about-section,
    .features-section,
    .statistics-section,
    .awards-section,
    .instructors-section,
    .insights-section,
    .resources-section,
    .contact-section,
    .faq-section {
        padding: var(--spacing-xl) 0;
    }
    
    .feature-card .card-image,
    .award-card .card-image,
    .instructor-card .card-image {
        height: 200px;
    }
    
    .about-content,
    .feature-card .card-content,
    .award-card .card-content,
    .instructor-card .card-content {
        padding: var(--spacing-md);
    }
    
    .footer-social {
        flex-direction: column;
    }
    
    .footer-social a {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 575px) {
    .hero-section {
        background-attachment: scroll;
    }
    
    .stat-card {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .carousel-control {
        width: 35px;
        height: 35px;
        font-size: 1.25rem;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .header-main,
    .hero-section,
    .footer-main,
    .btn,
    .carousel-control {
        display: none;
    }
    
    body {
        color: #000;
        background: #fff;
    }
    
    .section-title,
    h1, h2, h3, h4, h5, h6 {
        color: #000;
        page-break-after: avoid;
    }
    
    .card-neumorphic {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ============================================
   Accessibility
   ============================================ */
@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;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus styles for accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* ============================================
   Loading States
   ============================================ */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(52, 152, 219, 0.3);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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