/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: #1f2937;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: all 0.3s ease;
    background: transparent;
}

#header.scrolled {
    background: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #374151;
    transition: color 0.3s ease;
    font-weight: 500;
}

.nav-link:hover {
    color: #2563eb;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: #374151;
    transition: all 0.3s ease;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-nav {
    display: none;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
}

.mobile-nav.active {
    display: flex;
}

/* Buttons */
.btn-primary {
    background: #2563eb;
    color: white;
    padding: 1rem 2rem;
    border-radius: 9999px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: white;
    color: #2563eb;
    padding: 1rem 2rem;
    border-radius: 9999px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid #2563eb;
    cursor: pointer;
}

.btn-secondary:hover {
    background: #f9fafb;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
    padding: 8rem 0 4rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.text-blue {
    color: #2563eb;
}

.hero-text {
    font-size: 1.25rem;
    color: #4b5563;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: 1.5rem;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
    width: 100%;
}

.hero-badge {
    position: absolute;
    bottom: -1.5rem;
    left: -1.5rem;
    background: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.badge-number {
    font-size: 2rem;
    font-weight: 700;
    color: #2563eb;
}

.badge-text {
    color: #6b7280;
}

/* Sections */
.section-white {
    padding: 5rem 0;
    background: white;
}

.section-gray {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f9fafb 0%, #eff6ff 100%);
}

.section-blue {
    padding: 5rem 0;
    background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.25rem;
    color: #4b5563;
    max-width: 48rem;
    margin: 0 auto;
}

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

.advantage-card {
    background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
    padding: 2rem;
    border-radius: 1rem;
    transition: all 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-0.5rem);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
    background: #2563eb;
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.advantage-icon svg {
    color: white;
}

.advantage-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.advantage-card p {
    color: #4b5563;
}

/* Courses Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.course-card {
    background: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-0.5rem);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.course-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: #1f2937;
}

.course-card p {
    color: #4b5563;
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.course-duration {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #2563eb;
    font-weight: 600;
    font-size: 0.875rem;
    margin-top: auto;
}

/* Methodology */
.methodology-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.methodology-image img {
    border-radius: 1.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    width: 100%;
}

.methodology-steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.methodology-step {
    display: flex;
    gap: 1rem;
}

.step-number {
    background: #2563eb;
    color: white;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.step-content p {
    color: #4b5563;
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.stars {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-style: italic;
    color: #374151;
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-author img {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-weight: 700;
    color: #1f2937;
}

.author-position {
    font-size: 0.875rem;
    color: #6b7280;
}

/* Footer */
footer {
    background: #111827;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #60a5fa;
    margin-bottom: 1rem;
}

.footer-description {
    color: #9ca3af;
    margin-bottom: 1rem;
}

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

.social-links a {
    background: #1f2937;
    padding: 0.5rem;
    border-radius: 50%;
    color: white;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-links a:hover {
    background: #2563eb;
}

.footer-column h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

.footer-column ul li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: white;
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.contact-list svg {
    color: #60a5fa;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    color: #9ca3af;
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

/* Animations */
.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    animation: fadeInLeft 0.8s ease forwards;
}

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    animation: fadeInRight 0.8s ease forwards 0.2s;
}

@keyframes fadeInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.scroll-fade {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.scroll-fade.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

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

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

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

    .hero-text {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-badge {
        bottom: 1rem;
        left: 1rem;
    }

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

    .section-header p {
        font-size: 1rem;
    }

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

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

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

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 6rem 0 2rem;
    }

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

    .btn-primary, .btn-secondary {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }

    .section-white, .section-gray, .section-blue {
        padding: 3rem 0;
    }
}