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

:root {
    --bg-primary: #0A0F1E;
    --bg-surface: #111827;
    --border-color: #1E293B;
    --accent-primary: #3B82F6;
    --accent-secondary: #06B6D4;
    --accent-enterprise: #F59E0B;
    --text-primary: #F1F5F9;
    --text-muted: #94A3B8;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* NAVBAR */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(10, 15, 30, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 700;
    transition: var(--transition);
}

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

.logo-icon {
    flex-shrink: 0;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    transition: var(--transition);
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--accent-primary);
}

.lang-toggle {
    background-color: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--accent-primary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lang-toggle:hover {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--accent-primary);
}

.lang-separator {
    opacity: 0.5;
}

/* HERO SECTION */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 800px;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
    background: linear-gradient(135deg, #3B82F6, #06B6D4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.3rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* CTA BUTTONS */
.cta-button {
    padding: 0.875rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

.cta-button.primary {
    background: linear-gradient(135deg, #3B82F6, #06B6D4);
    color: white;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}

.cta-button.secondary {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-enterprise);
    border: 2px solid var(--accent-enterprise);
}

.cta-button.secondary:hover {
    background: rgba(245, 158, 11, 0.2);
    transform: translateY(-2px);
}

/* SERVICES SECTION */
.services-section {
    padding: 5rem 0;
    position: relative;
    z-index: 10;
}

.services-section.enterprise {
    background-color: rgba(245, 158, 11, 0.03);
}

.section-badge {
    display: inline-block;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
    padding: 0.5rem 1.25rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.section-badge.enterprise-badge {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-enterprise);
    border-color: rgba(245, 158, 11, 0.3);
}

.services-section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.services-grid {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.student-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    grid-auto-rows: 1fr;
}

.enterprise-grid {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.service-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.15);
}

.service-card.enterprise-card:hover {
    border-color: var(--accent-enterprise);
    box-shadow: 0 10px 30px rgba(245, 158, 11, 0.15);
}

.service-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 1.5rem;
    color: var(--accent-primary);
}

.service-icon.enterprise-icon {
    color: var(--accent-enterprise);
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.deliverables {
    background-color: rgba(59, 130, 246, 0.05);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.deliverable {
    font-size: 0.9rem;
    color: var(--text-muted);
    padding: 0.5rem 0;
}

.service-btn {
    background-color: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    align-self: flex-start;
}

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

/* HOW IT WORKS */
.how-it-works {
    padding: 5rem 0;
    background-color: rgba(17, 24, 39, 0.5);
}

.how-it-works h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.timeline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.timeline-step {
    text-align: center;
    flex: 1;
    min-width: 200px;
}

.timeline-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(6, 182, 212, 0.1));
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.timeline-step h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.timeline-step p {
    color: var(--text-muted);
}

.timeline-arrow {
    color: var(--accent-primary);
    font-size: 1.5rem;
    display: none;
}

/* PRICING SECTION */
.pricing-section {
    padding: 5rem 0;
}

.pricing-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
}

.pricing-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.pricing-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
}

.pricing-card.enterprise-pricing:hover {
    border-color: var(--accent-enterprise);
}

.pricing-header {
    margin-bottom: 2rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.pricing-tag {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.pricing-tag.enterprise-tag {
    color: var(--accent-enterprise);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.pricing-features li {
    padding: 0.75rem 0;
    color: var(--text-muted);
    border-bottom: 1px solid rgba(30, 41, 59, 0.5);
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* CONTACT SECTION */
.contact-section {
    padding: 5rem 0;
    background-color: rgba(17, 24, 39, 0.5);
}

.contact-container {
    max-width: 600px;
}

.contact-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-section > .container > p {
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.contact-form {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    background-color: rgba(59, 130, 246, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background-color: rgba(59, 130, 246, 0.1);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form button {
    width: 100%;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 6px;
    text-align: center;
    display: none;
}

.form-message.success {
    display: block;
    background-color: rgba(34, 197, 94, 0.1);
    color: #86EFAC;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.contact-info {
    text-align: center;
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

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

.contact-info a:hover {
    color: var(--accent-secondary);
}

/* FOOTER */
.footer {
    background-color: rgba(0, 0, 0, 0.3);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1.5rem;
    margin-top: 5rem;
}

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

.footer-section h4 {
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section ul li a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--accent-primary);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
}

.footer-logo:hover {
    color: var(--accent-primary);
}

.footer-logo div div {
    font-weight: 700;
}

.footer-logo div small {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
    .navbar-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

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

    .hero-cta button {
        width: 100%;
        max-width: 300px;
    }

    .services-section h2 {
        font-size: 2rem;
    }

    .student-grid {
        grid-template-columns: 1fr;
    }

    .enterprise-grid {
        grid-template-columns: 1fr;
    }

    .timeline {
        flex-direction: column;
        gap: 1.5rem;
    }

    .timeline-arrow {
        display: block;
        transform: rotate(90deg);
        margin: 0 -0.5rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .how-it-works h2,
    .pricing-section h2,
    .contact-section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .cta-button {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }

    .section-badge {
        font-size: 0.75rem;
    }

    .services-section h2,
    .how-it-works h2,
    .pricing-section h2,
    .contact-section h2 {
        font-size: 1.5rem;
    }

    .service-card,
    .pricing-card,
    .contact-form {
        padding: 1.5rem;
    }

    .nav-links {
        gap: 0.5rem;
    }
}

/* SCROLL ANIMATIONS */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

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

/* UTILITY CLASSES */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* MODAL POPUP */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.4s ease;
    position: relative;
}

.close-modal {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

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

.modal-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #3B82F6, #06B6D4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin: 0 auto 1.5rem;
    animation: scaleIn 0.5s ease;
}

#modalTitle {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

#modalMessage {
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.modal-button {
    background: linear-gradient(135deg, #3B82F6, #06B6D4);
    color: white;
    border: none;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.modal-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}

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

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

@keyframes scaleIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}