/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background: #ffffff;
    overflow-x: hidden;
    padding-top: 70px;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* ===== CSS VARIABLES ===== */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --success-color: #48bb78;
    --warning-color: #ed8936;
    --error-color: #f56565;

    --gray-50: #f7fafc;
    --gray-100: #edf2f7;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e0;
    --gray-400: #a0aec0;
    --gray-500: #718096;
    --gray-600: #4a5568;
    --gray-700: #2d3748;
    --gray-800: #1a202c;
    --gray-900: #171923;

    --white: #ffffff;
    --black: #000000;

    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 1.875rem;
    --font-4xl: 2.25rem;

    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    --container-max: 1200px;
    --navbar-height: 70px;

    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
}

/* ===== CONTAINER ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 100%;
}

/* ===== NAVBAR + MOBILE SIDEBAR (Responsive) ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--navbar-height);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-lg);
    color: var(--gray-800);
    flex-shrink: 0;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-item { position: relative; }

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 500;
    font-size: var(--font-sm);
    color: var(--gray-700);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--white);
    background: var(--gradient-primary);
}

.nav-link i { font-size: 0.7em; }

/* Keep mega-menu styling for desktop hover */
.mega-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-lg);
    min-width: 560px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1001;
    border: 1px solid var(--gray-200);
    pointer-events: none;
}

.nav-item:hover .mega-menu,
.nav-item.active .mega-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.mega-menu-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.mega-menu-column h4 {
    font-size: var(--font-xs);
    font-weight: 600;
    color: var(--gray-500);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mega-menu-column ul { list-style: none; }

.mega-menu-column li {
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-sm);
    color: var(--gray-600);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.mega-menu-column a {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--gray-700);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-size: var(--font-sm);
    width: 100%;
}

.mega-menu-column a:hover {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
}

.class-badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.65em;
    font-weight: 600;
    margin-left: auto;
}

.badge-primary { background: #e3f2fd; color: #1976d2; }
.badge-middle { background: #f3e5f5; color: #7b1fa2; }
.badge-secondary { background: #e8f5e8; color: #388e3c; }
.badge-science { background: #fff3e0; color: #f57c00; }
.badge-commerce { background: #fce4ec; color: #c2185b; }
.badge-arts { background: #f1f8e9; color: #689f38; }
.badge-cuet { background: #e0f2f1; color: #00695c; }

/* Hamburger Toggle (hidden on desktop) */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    gap: 5px;
    cursor: pointer;
    z-index: 1002;
    background: none;
    border: none;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Sidebar */
.mobile-sidebar {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    max-width: 85vw;
    height: 100vh;
    background: var(--white);
    box-shadow: var(--shadow-xl);
    z-index: 1001;
    transition: right var(--transition-normal);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.mobile-sidebar.active { right: 0; }

.mobile-sidebar-header {
    display: flex;
    justify-content: flex-end;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.mobile-sidebar-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--gray-600);
    font-size: var(--font-lg);
    transition: all var(--transition-fast);
}

.mobile-sidebar-close:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

.mobile-sidebar-content { 
    padding: var(--spacing-xl); 
    flex: 1; 
    overflow-y: auto; 
    -webkit-overflow-scrolling: touch; 
}

.mobile-sidebar-logo {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.mobile-sidebar-logo img {
    height: 50px;
    width: auto;
    margin: 0 auto;
}

.mobile-sidebar-content h2 {
    font-size: var(--font-lg);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mobile-sidebar-menu { list-style: none; }

.mobile-sidebar-menu li { margin-bottom: var(--spacing-xs); }

.mobile-sidebar-menu a {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--gray-700);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    font-weight: 500;
    font-size: var(--font-base);
}

.mobile-sidebar-menu a:hover,
.mobile-sidebar-menu a.active {
    background: var(--gradient-primary);
    color: var(--white);
}

.mobile-sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.mobile-sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

body.sidebar-open { overflow: hidden; }

/* ===== Mobile Toggle Rules ===== */
@media (max-width: 768px) {
    /* Hide desktop menu + mega menu */
    .nav-menu { display: none; }
    .mega-menu { display: none !important; }

    /* Show hamburger */
    .nav-toggle { display: flex; }

    /* Sidebar should overlay from right; already handled by .mobile-sidebar.active */
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: calc(100vh - var(--navbar-height));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: var(--spacing-2xl) 0;
}

.hero-background-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.92), rgba(118, 75, 162, 0.92));
    z-index: 1;
}

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

.hero-content {
    text-align: center;
    color: var(--white);
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero h1 span {
    display: block;
    background: linear-gradient(135deg, var(--white), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-lg);
    max-width: 700px;
    margin: 0 auto;
}

.stat-item {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
}

.stat-number {
    font-size: var(--font-3xl);
    font-weight: 700;
    display: block;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--white), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-sm);
    opacity: 0.9;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-base);
    text-decoration: none;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-lg);
}

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

.btn-white:hover {
    background: transparent;
    color: var(--white);
    transform: translateY(-2px);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

/* ===== SECTIONS ===== */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--gray-800);
}

.section-subtitle {
    font-size: var(--font-lg);
    text-align: center;
    color: var(--gray-500);
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== FEATURES ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: linear-gradient(145deg, var(--white), var(--gray-50));
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

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

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: var(--white);
    font-size: var(--font-2xl);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.feature-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.feature-card h3 {
    font-size: var(--font-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--gray-800);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.7;
    font-size: var(--font-base);
}

/* ===== COURSES ===== */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.course-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
    position: relative;
}

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

.course-card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

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

.course-card-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--gradient-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-xs);
    font-weight: 700;
    color: var(--white);
    z-index: 2;
}

.course-card-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-4xl);
    color: var(--white);
    z-index: 2;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.course-card-content {
    padding: var(--spacing-xl);
}

.course-card h3 {
    font-size: var(--font-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--gray-800);
}

.course-card p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.course-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-sm);
    color: var(--gray-500);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
}

.course-card-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* Course card back (simplified for mobile compatibility) */
.course-card-inner {
    position: relative;
}

.course-card-back {
    display: none;
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xl);
    text-align: center;
}

.course-card-back h3 {
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.course-card-back ul {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.course-card-back li {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

/* On desktop, show back on hover with overlay */
@media (min-width: 1024px) {
    .course-card-inner {
        position: relative;
    }

    .course-card-back {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        border-radius: var(--radius-2xl);
    }

    .course-card:hover .course-card-back {
        opacity: 1;
        visibility: visible;
    }

    .course-card:hover .course-card-front {
        opacity: 0;
    }
}

/* ===== TESTIMONIALS ===== */
.testimonials {
    background: var(--gray-50);
}

.testimonial-slider {
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    display: none;
    animation: fadeIn 0.5s ease;
}

.testimonial-card.active {
    display: block;
}

.testimonial-rating {
    color: #fbbf24;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-sm);
}

.testimonial-text {
    font-size: var(--font-lg);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    color: var(--gray-700);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
}

.testimonial-info h4 {
    font-size: var(--font-base);
    font-weight: 600;
    color: var(--gray-800);
}

.testimonial-info p {
    font-size: var(--font-sm);
    color: var(--gray-500);
}

.testimonial-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-300);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* ===== CTA SECTION ===== */
.cta {
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.cta h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.cta p {
    font-size: var(--font-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-800);
    color: var(--white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand h3 {
    font-size: var(--font-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    height: 45px;
    width: auto;
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    color: var(--gray-400);
    line-height: 1.7;
    font-size: var(--font-sm);
    margin-bottom: var(--spacing-md);
}

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

.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--gray-700);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all var(--transition-fast);
    font-size: var(--font-sm);
}

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

.footer-column h4 {
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--white);
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--white), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-full);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.btn-white {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

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

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    color: var(--white);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.stat-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    display: block;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--white), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* ===== SECTIONS ===== */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--gray-800);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    text-align: center;
    color: var(--gray-600);
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== FEATURES ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    padding: 0 var(--spacing-md);
}

.feature-card {
    background: linear-gradient(145deg, var(--white), var(--gray-50));
    border-radius: var(--border-radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow:
        0 8px 32px rgba(102, 126, 234, 0.1),
        0 2px 8px rgba(102, 126, 234, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    text-align: center;
    transition: all var(--transition-bounce);
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-2xl) var(--border-radius-2xl) 0 0;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-elastic);
}

.feature-card::after {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-2xl);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow:
        0 20px 60px rgba(102, 126, 234, 0.15),
        0 8px 24px rgba(102, 126, 234, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover::after {
    opacity: 1;
}

.feature-icon {
    width: 90px;
    height: 90px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: var(--white);
    font-size: var(--font-size-3xl);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
    position: relative;
    transition: all var(--transition-bounce);
}

.feature-icon::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: var(--gradient-primary);
    border-radius: 50%;
    opacity: 0.3;
    /* removed infinite pulse animation for performance */
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 32px rgba(102, 126, 234, 0.4);
}

.feature-card img {
    width: 100%;
    height: 220px;
    object-fit: contain;
    border-radius: var(--border-radius-xl);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-normal);
}

.feature-card:hover img {
    transform: scale(1.05);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--gray-800), var(--gray-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.7;
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
}

/* Card variations */
.feature-card.primary {
    border-color: var(--primary-color);
}

.feature-card.secondary {
    border-color: var(--secondary-color);
}

.feature-card.accent {
    border-color: var(--accent-color);
}

.feature-card.success {
    border-color: var(--success-color);
}

.feature-card.warning {
    border-color: var(--warning-color);
}

.feature-card.error {
    border-color: var(--error-color);
}

/* ===== COURSES ===== */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    padding: 0 var(--spacing-md);
}

.course-card {
    background: linear-gradient(145deg, var(--white), var(--gray-50));
    border-radius: var(--border-radius-2xl);
    overflow: hidden;
    box-shadow:
        0 8px 32px rgba(102, 126, 234, 0.1),
        0 2px 8px rgba(102, 126, 234, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all var(--transition-bounce);
    position: relative;
    perspective: 1000px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--gradient-secondary);
    border-radius: var(--border-radius-2xl) var(--border-radius-2xl) 0 0;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-elastic);
    z-index: 2;
}

.course-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow:
        0 20px 60px rgba(102, 126, 234, 0.15),
        0 8px 24px rgba(102, 126, 234, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.course-card:hover::before {
    transform: scaleX(1);
}

.course-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform-style: preserve-3d;
}

.course-card:hover .course-card-inner {
    transform: rotateY(180deg);
}

.course-card-front,
.course-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: var(--border-radius-2xl);
    overflow: hidden;
}

.course-card-back {
    transform: rotateY(180deg);
    background: var(--gradient-ocean);
    color: var(--white);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-2xl);
    position: relative;
}

.course-card-back::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="50" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="50" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
    pointer-events: none;
}

.course-card-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.course-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all var(--transition-normal);
}

.course-card:hover .course-card-image img {
    transform: scale(1.1) rotate(2deg);
    filter: brightness(1.1) contrast(1.1);
}

.course-card-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--gradient-primary);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    z-index: 3;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.course-card-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-size-5xl);
    color: var(--white);
    z-index: 2;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transition: all var(--transition-normal);
}

.course-card:hover .course-card-icon {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.2);
}

.course-card-content {
    padding: var(--spacing-xl);
    position: relative;
}

.course-card h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--gray-800), var(--gray-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.course-card p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
    font-size: var(--font-size-base);
}

.course-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    margin-bottom: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
}

.course-card-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.course-card-back h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
}

.course-card-back h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--white);
    border-radius: var(--border-radius-full);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.course-card-back ul {
    list-style: none;
    margin-bottom: var(--spacing-xl);
    width: 100%;
}

.course-card-back li {
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-fast);
}

.course-card-back li:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}

.course-card-back i {
    color: var(--accent-color);
    font-size: var(--font-size-lg);
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
}

/* Course card variations */
.course-card.science {
    border-color: var(--cyan-color);
}

.course-card.science::before {
    background: var(--gradient-ice);
}

.course-card.commerce {
    border-color: var(--orange-color);
}

.course-card.commerce::before {
    background: var(--gradient-fire);
}

.course-card.arts {
    border-color: var(--purple-color);
}

.course-card.arts::before {
    background: var(--gradient-forest);
}

/* ===== TESTIMONIALS ===== */
.testimonials {
    background: linear-gradient(135deg, var(--gray-50), var(--white));
}

.overall-rating {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.testimonial-slider {
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    margin: 0 var(--spacing-md);
    display: none;
    animation: fadeIn 0.5s ease;
}

.testimonial-card.active {
    display: block;
}

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

.testimonial-rating {
    margin-bottom: var(--spacing-md);
}

.testimonial-text {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    color: var(--gray-700);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
}

.testimonial-info h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--gray-800);
    margin-bottom: 2px;
}

.testimonial-info p {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
}

.testimonial-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-300);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* ===== CTA SECTION ===== */
.cta {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    text-align: center;
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="ctaPattern" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23ctaPattern)"/></svg>');
    opacity: 0.3;
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--white), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    /* removed infinite textGlow animation for performance */
}

.cta-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
    line-height: 1.6;
}

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

@keyframes textGlow {
    from { text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3); }
    to { text-shadow: 0 2px 4px rgba(255, 255, 255, 0.5); }
}

@media (max-width: 768px) {
    .cta-title {
        font-size: var(--font-size-3xl);
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-800);
    color: var(--white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    height: 50px;
    width: auto;
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    color: var(--gray-400);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gray-700);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-column h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
    color: var(--white);
}

.footer-column ul {
    list-style: none;
}

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

.footer-column a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-700);
    color: var(--gray-500);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

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

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* ===== ADVANCED ANIMATIONS ===== */

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    filter: blur(5px);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-50px) rotate(-5deg);
    transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0) rotate(0deg);
}

.reveal-right {
    opacity: 0;
    transform: translateX(50px) rotate(5deg);
    transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0) rotate(0deg);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.8) rotate(-10deg);
    transition: all 0.7s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.reveal-bounce {
    opacity: 0;
    transform: translateY(50px) scale(0.9);
    transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.reveal-bounce.active {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Stagger Children Animation */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    animation: staggerFadeIn 0.6s ease forwards;
}

.stagger-children.active > *:nth-child(1) { animation-delay: 0.1s; }
.stagger-children.active > *:nth-child(2) { animation-delay: 0.2s; }
.stagger-children.active > *:nth-child(3) { animation-delay: 0.3s; }
.stagger-children.active > *:nth-child(4) { animation-delay: 0.4s; }
.stagger-children.active > *:nth-child(5) { animation-delay: 0.5s; }
.stagger-children.active > *:nth-child(6) { animation-delay: 0.6s; }

@keyframes staggerFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animate In Class */
.animate-in {
    animation: animateIn 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes animateIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
        filter: blur(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

/* Hover Effects */
.hover-lift {
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hover-lift:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.hover-glow {
    transition: all 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(102, 126, 234, 0.4);
    transform: scale(1.05);
}

.hover-rotate {
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.hover-rotate:hover {
    transform: rotate(5deg) scale(1.1);
}

/* Gradient Text Effects */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    /* removed infinite gradientShift animation for performance */
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.neon-text {
    color: #00f2fe;
    text-shadow:
        0 0 5px #00f2fe,
        0 0 10px #00f2fe,
        0 0 15px #00f2fe,
        0 0 20px #00f2fe;
    /* removed infinite neonPulse animation for performance */
}

@keyframes neonPulse {
    from {
        text-shadow:
            0 0 5px #00f2fe,
            0 0 10px #00f2fe,
            0 0 15px #00f2fe,
            0 0 20px #00f2fe;
    }
    to {
        text-shadow:
            0 0 2px #00f2fe,
            0 0 5px #00f2fe,
            0 0 8px #00f2fe,
            0 0 12px #00f2fe;
    }
}

/* Floating Animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

.float { /* removed infinite float animation for performance */ }

.float-slow { /* removed infinite float animation for performance */ }

.float-fast { /* removed infinite float animation for performance */ }

/* Pulse Animation */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.pulse {
    /* removed infinite pulse animation for performance */
}

/* Shake Animation */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake:hover {
    animation: shake 0.5s ease-in-out;
}

/* Bounce Animation */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.bounce {
    /* removed infinite bounce animation for performance */
}

/* Slide In Animations */
@keyframes slideInUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* Loading Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes loadingDots {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

.loading-dots span:nth-child(1) { animation: loadingDots 1.4s ease-in-out infinite; }
.loading-dots span:nth-child(2) { animation: loadingDots 1.4s ease-in-out 0.2s infinite; }
.loading-dots span:nth-child(3) { animation: loadingDots 1.4s ease-in-out 0.4s infinite; }

/* Morphing Shapes */
@keyframes morph {
    0%, 100% {
        border-radius: 50%;
        transform: scale(1);
    }
    25% {
        border-radius: 0;
        transform: scale(1.2);
    }
    50% {
        border-radius: 25%;
        transform: scale(0.8);
    }
    75% {
        border-radius: 50% 0 50% 0;
        transform: scale(1.1);
    }
}

.morph {
    /* removed infinite morph animation for performance */
}

/* Glitch Effect */
@keyframes glitch {
    0% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
    100% { transform: translate(0); }
}

.glitch:hover {
    animation: glitch 0.3s ease-in-out;
}

/* Rainbow Border */
@keyframes rainbowBorder {
    0% { border-color: #ff0000; }
    16.67% { border-color: #ff8000; }
    33.33% { border-color: #ffff00; }
    50% { border-color: #80ff00; }
    66.67% { border-color: #00ff80; }
    83.33% { border-color: #0080ff; }
    100% { border-color: #8000ff; }
}

.rainbow-border {
    /* removed infinite rainbowBorder animation for performance */
}

/* Typing Effect */
@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink {
    50% { border-color: transparent; }
}

.typing-effect {
    overflow: hidden;
    border-right: 2px solid;
    white-space: nowrap;
    /* removed infinite typing + blink animation for performance */
}

/* Dark Theme Styles */
.dark-theme {
    --gray-50: #1a202c;
    --gray-100: #2d3748;
    --gray-200: #4a5568;
    --gray-300: #718096;
    --gray-400: #a0aec0;
    --gray-500: #cbd5e0;
    --gray-600: #e2e8f0;
    --gray-700: #f7fafc;
    --gray-800: #ffffff;
    --gray-900: #ffffff;
    --white: #1a202c;
    --black: #ffffff;
}

.dark-theme body {
    background: var(--dark-bg);
    color: var(--gray-100);
}

.dark-theme .navbar {
    background: linear-gradient(135deg, rgba(26, 32, 44, 0.95), rgba(45, 55, 72, 0.9));
}

.dark-theme .feature-card,
.dark-theme .course-card,
.dark-theme .faculty-card {
    background: var(--gray-800);
    border-color: var(--gray-700);
}

.dark-theme .footer {
    background: var(--gray-900);
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .reveal,
    .reveal-left,
    .reveal-right,
    .reveal-scale {
        transform: translateY(20px);
    }

    .reveal-left,
    .reveal-right {
        transform: translateX(0) translateY(20px);
    }
}

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

/* Accessibility Enhancements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .btn {
        border: 2px solid currentColor;
    }

    .navbar {
        border-bottom: 3px solid var(--gray-900);
    }
}