:root {
    --primary-color: #2563eb;
    --secondary-color: #7c3aed;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --white: #ffffff;
    --bg-light: #f9fafb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
}

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

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

.main-header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navigation-primary {
    padding: 1rem 0;
}

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

.brand-logo img {
    height: 50px;
    width: auto;
}

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

.menu-list a {
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 0;
}

.menu-list a:hover,
.menu-list a.active {
    color: var(--primary-color);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

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

.hero-main {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 120px 20px;
    text-align: center;
}

.hero-overlay {
    position: relative;
    z-index: 1;
}

.container-hero {
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

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

.btn-primary,
.btn-secondary {
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s;
    display: inline-block;
    cursor: pointer;
    border: none;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

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

.section-heading {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-dark);
    font-weight: 700;
}

.countdown-section {
    background: var(--bg-light);
    padding: 80px 20px;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.time-box {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    min-width: 120px;
    text-align: center;
}

.time-value {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.time-label {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-light);
    text-transform: uppercase;
    font-size: 0.9rem;
}

.features-showcase {
    padding: 80px 20px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.feature-icon {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

.courses-preview {
    background: var(--bg-light);
    padding: 80px 20px;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.course-item {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.course-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.course-content {
    padding: 2rem;
}

.course-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.course-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.link-more {
    color: var(--primary-color);
    font-weight: 600;
    transition: color 0.3s;
}

.link-more:hover {
    color: var(--secondary-color);
}

.testimonials-area {
    padding: 80px 20px;
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.testimonial-box {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
}

.testimonial-box img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    object-fit: cover;
}

.testimonial-text {
    color: var(--text-light);
    font-style: italic;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.testimonial-box h4 {
    color: var(--text-dark);
    margin-bottom: 0.3rem;
}

.testimonial-box span {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.cta-final {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
}

.cta-final h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-final p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.site-footer {
    background: #1f2937;
    color: var(--white);
    padding: 60px 20px 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h3 {
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.footer-col p {
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 1rem;
}

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

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col ul li a {
    opacity: 0.9;
    transition: opacity 0.3s;
}

.footer-col ul li a:hover {
    opacity: 1;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
}

.social-links a:hover {
    background: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    z-index: 9999;
    display: none;
}

.cookie-consent.show {
    display: block;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.cookie-text h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.cookie-text p {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.cookie-link {
    color: var(--primary-color);
    font-weight: 600;
}

.cookie-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-accept,
.btn-customize,
.btn-decline {
    padding: 0.7rem 1.5rem;
    border-radius: 6px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-accept:hover {
    background: #1d4ed8;
}

.btn-customize {
    background: transparent;
    color: var(--text-dark);
    border: 2px solid var(--text-dark);
}

.btn-customize:hover {
    background: var(--bg-light);
}

.btn-decline {
    background: transparent;
    color: var(--text-light);
}

.btn-decline:hover {
    color: var(--text-dark);
}

@media (max-width: 768px) {
    .menu-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow);
    }

    .menu-list.active {
        display: flex;
    }

    .mobile-toggle {
        display: flex;
    }

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

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-heading {
        font-size: 2rem;
    }

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

    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-actions {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

    .countdown-timer {
        gap: 1rem;
    }

    .time-box {
        min-width: 100px;
        padding: 1.5rem;
    }

    .time-value {
        font-size: 2.5rem;
    }
}