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

:root {
    --primary: #1e3a8a;
    --secondary: #14104e;
    --accent: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --light-bg: #f8fafc;
    --dark: #0f172a;
    --gray: #64748b;
    --light-gray: #f1f5f9;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #1e3a8a, #1e1f6b);
    --gradient-secondary: linear-gradient(135deg, #06b6d4, #1e1f6b);
    --gradient-accent: linear-gradient(135deg, #f59e0b, #ef4444);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --border-radius-lg: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header */
header {
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo i {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.nav-links a:hover {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* Hero */
.hero {
    padding: 120px 2rem 80px;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero::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 1200 800"><defs><pattern id="grid" width="60" height="60" patternUnits="userSpaceOnUse"><circle cx="30" cy="30" r="1.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="1200" height="800" fill="url(%23grid)"/></svg>');
    background-size: cover;
    pointer-events: none;
    animation: float 20s ease-in-out infinite;
}

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

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content h1 {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 1.5rem;
    font-weight: 800;
    line-height: 1.1;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: slideInLeft 1s ease-out;
}

.hero-content p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2.5rem;
    line-height: 1.7;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    animation: slideInLeft 1s ease-out 0.2s both;
}

@keyframes slideInLeft {
    from { transform: translateX(-50px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.cta-container {
    display: flex;
    gap: 1rem;
    animation: slideInLeft 1s ease-out 0.4s both;
}

.cta-button {
    padding: 16px 32px;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.cta-primary {
    background: var(--gradient-secondary);
    color: var(--white);
    border: none;
}

.cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
}

.cta-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.cta-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: slideInRight 1s ease-out 0.6s both;
}

@keyframes slideInRight {
    from { transform: translateX(50px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.hero-box {
    width: 100%;
    max-width: 500px;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    position: relative;
    overflow: hidden;
    animation: float 6s ease-in-out infinite;
}

.hero-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: relative;
    z-index: 1;
    border-radius: var(--border-radius-lg);
}

/* Features */
.features {
    padding: 100px 2rem;
    background: var(--white);
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--dark);
    margin-bottom: 4rem;
    font-weight: 800;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: var(--shadow-md);
    cursor: pointer;
}

.feature-card:hover {
    border-color: rgba(99, 102, 241, 0.2);
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px) scale(1.02);
}

.feature-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    color: white;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    overflow: hidden;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius);
}

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

.feature-card h3 {
    font-size: 1.3rem;
    color: var(--dark);
    margin-bottom: 1rem;
    font-weight: 700;
}

.feature-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* Mission & Vision */
.mission-vision {
    padding: 100px 2rem;
    background: var(--light-bg);
}

.mission-vision-grid {
    max-width: 1200px;
    margin: 3rem auto 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
}

.mission-card, .vision-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.4s ease;
    border: 2px solid transparent;
}

.mission-card:hover, .vision-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.mission-icon, .vision-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.mission-card h3, .vision-card h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.mission-card p, .vision-card p {
    color: var(--dark);
    line-height: 1.7;
}

/* Courses */
.courses {
    padding: 100px 2rem;
    background: var(--white);
}

.courses-grid {
    max-width: 1200px;
    margin: 4rem auto 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.course-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.4s ease;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
}

.course-card:hover {
    border-color: rgba(99, 102, 241, 0.2);
    box-shadow: var(--shadow-xl);
    transform: translateY(-12px) scale(1.02);
}

.course-image {
    height: 240px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: white;
}

.course-content {
    padding: 2rem;
}

.course-category {
    display: inline-block;
    background: var(--gradient-secondary);
    color: var(--white);
    padding: 0.4rem 1.2rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.course-card h3 {
    color: var(--dark);
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.3;
}

.course-card p {
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.course-meta {
    display: flex;
    gap: 2rem;
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
}

.course-price {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.course-buttons {
    display: flex;
    gap: 10px;
}

.course-btn {
    padding: 12px 24px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    font-size: 0.9rem;
}

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

.course-btn.secondary {
    background: var(--gradient-secondary);
}

/* Stats */
.stats {
    padding: 80px 2rem;
    background: var(--gradient-primary);
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255,255,255,0.2);
    transition: all 0.4s ease;
}

.stat-item:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-8px);
}

.stat-item h3 {
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 1.2rem;
    color: white;
    font-weight: 600;
}

/* About */
.about {
    padding: 80px 2rem;
    background: var(--white);
}

.about-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-image {
    width: 100%;
    height: 400px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
}

.about-content h2 {
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 1rem;
    font-weight: 700;
}

.about-content p {
    color: var(--gray);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.about-list {
    list-style: none;
    margin-top: 1.5rem;
}

.about-list li {
    padding: 0.5rem 0;
    color: var(--gray);
}

.about-list i {
    color: var(--primary);
    margin-right: 0.5rem;
}

/* Teachers */
.teachers {
    padding: 80px 2rem;
    background: var(--light-bg);
}

.teachers-grid {
    max-width: 1200px;
    margin: 3rem auto 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.teacher-card {
    background: var(--white);
    border: 2px solid #e0e0e0;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    text-align: center;
    transition: all 0.4s ease;
}

.teacher-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.teacher-photo {
    width: 100%;
    height: 250px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.teacher-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.teacher-info {
    padding: 1.5rem;
}

.teacher-info h3 {
    color: var(--dark);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.teacher-role {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
}

.teacher-info p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* Testimonials */
.testimonials {
    padding: 100px 2rem;
    background: var(--white);
}

.testimonials-grid {
    max-width: 1200px;
    margin: 4rem auto 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2.5rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius-lg);
    transition: all 0.4s ease;
    box-shadow: var(--shadow-md);
    cursor: pointer;
}

.testimonial-card:hover {
    border-color: rgba(99, 102, 241, 0.2);
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    margin-bottom: 1.5rem;
}

.testimonial-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
    overflow: hidden;
}

.testimonial-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.testimonial-info h4 {
    color: var(--dark);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.testimonial-role {
    color: var(--gray);
    font-size: 1rem;
    font-weight: 500;
}

.testimonial-stars {
    color: #fbbf24;
    margin-top: 0.5rem;
}

.testimonial-card p {
    color: var(--gray);
    line-height: 1.7;
}

/* Footer */
footer {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    padding: 80px 2rem 30px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    margin-bottom: 1.5rem;
    color: var(--accent);
    font-weight: 700;
}

.footer-section p {
    color: #cbd5e1;
    line-height: 1.7;
}

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

.footer-section a {
    color: #cbd5e1;
    text-decoration: none;
    display: block;
    margin-bottom: 0.8rem;
    transition: all 0.3s ease;
}

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

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-links a {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--gradient-primary);
    transform: translateY(-3px) scale(1.1);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #94a3b8;
}

/* WhatsApp Float */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}

.whatsapp-btn {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #25D366, #128C7E);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    cursor: pointer;
    transition: all 0.4s ease;
    color: white;
    font-size: 2.2rem;
}

.whatsapp-btn:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 15px 35px rgba(37, 211, 102, 0.4);
}

.whatsapp-options {
    position: absolute;
    bottom: 80px;
    right: 0;
    background: var(--white);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-lg);
    padding: 1rem;
    display: none;
    min-width: 220px;
    box-shadow: var(--shadow-xl);
}

.whatsapp-options.active {
    display: block;
}

.whatsapp-option {
    display: block;
    padding: 1rem;
    color: var(--dark);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.whatsapp-option:last-child {
    margin-bottom: 0;
}

.whatsapp-option:hover {
    background: rgba(99, 102, 241, 0.1);
    transform: translateX(5px);
}

.whatsapp-option i {
    color: #25D366;
    margin-right: 0.8rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    position: relative;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(-50px); }
    to { opacity: 1; transform: translateY(0); }
}

.close {
    position: absolute;
    top: 15px;
    right: 25px;
    color: var(--gray);
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: var(--primary);
}

.modal-content h2 {
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.modal-content h3 {
    color: var(--dark);
    margin: 1.5rem 0 1rem;
    font-size: 1.3rem;
}

.modal-content p {
    margin-bottom: 1rem;
    color: var(--gray);
}

.modal-content ul {
    list-style: none;
    padding: 0;
    margin-bottom: 1.5rem;
}

.modal-content li {
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--light-gray);
    color: var(--dark);
}

.modal-content li:last-child {
    border-bottom: none;
}

.modal-content li strong {
    color: var(--primary);
}

/* Responsive */
@media (max-width: 968px) {
    .hero-container,
    .about-container {
        grid-template-columns: 1fr;
    }

    .hero-image,
    .about-image {
        order: -1;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mission-vision-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }

    .cta-container {
        flex-direction: column;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .course-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .course-buttons {
        width: 100%;
        flex-direction: column;
    }

    .course-btn {
        width: 100%;
    }
}