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

body {
    font-family: 'Inter', sans-serif;
    background-color: #111827;
    color: #FFFFFF;
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
}

h1 {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
}

h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header p {
    color: #94A3B8;
    font-size: 18px;
}

.btn {
    display: inline-block;
    padding: 11px 24px;
    border-radius: 4px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 14px;
}

.btn-primary {
    background: transparent;
    color: rgb(156 163 175);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 14px;
}

.btn-primary:hover {
    color: #F59E0B;
}

.btn-secondary {
    background-color: #2563EB;
    color: #FFFFFF;
}

.btn-secondary:hover {
    background-color: #1D4ED8;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: rgb(156 163 175);
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 14px;
}

.btn-outline:hover {
    color: #2563EB;
}

.btn-large {
    font-size: 16px;
    display: inline-block;
    padding: 11px 24px;
    border-radius: 4px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    color: #FFFFFF;
    border: none;
    background-color: #F59E0B;
    box-shadow: none;
}

.btn-large:hover {
    box-shadow: 0px 0px 15px rgba(245, 158, 11, 0.7);
    transform: translateY(-2px);
}

.btn-larges {
    font-size: 16px;
    display: inline-block;
    padding: 11px 24px;
    border-radius: 4px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    color: #FFFFFF;
    box-shadow: none;
    border: none;
    background-color: #2563EB;
}

.btn-larges:hover {
    box-shadow: 0px 0px 15px rgba(37, 99, 235, 0.7);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(31, 41, 55, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    border-bottom: 1px solid #334155;
    padding: 14px 16px;

}

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

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    width: 80px;
}

.length {
    width: 1px;
    height: 24px;
    background-color: #334155;
}


.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    color: rgb(156 163 175);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 14px;
}

.nav-links a:hover {
    color: #FFFFFF;
}

.nav-buttons {
    display: flex;
    gap: 24px;
    align-items: center;
}


.hero {
    position: relative;
    padding: 150px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    width: 140%;
    height: 140%;
    top: 0;
    left: -20%;

    background: radial-gradient(circle at 20% 30%, rgba(37, 99, 235, 0.5), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(245, 158, 11, 0.5), transparent 40%);

    animation: moveBg 10s infinite alternate ease-in-out;
    z-index: 0;
    background-size: 120% 120%;
}

@keyframes moveBg {
    0% {
        background-position: 0% 0%;
    }
    100% {
        background-position: 100% 100%;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 50px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    animation: fadeUp 1s ease forwards;
}

.hero-title span {
    color: #F59E0B;
    text-shadow: 0 0 20px rgba(245, 158, 11, 0.7);
}

.hero-subtitle {
    font-size: 17px;
    color: #94A3B8;
    margin-bottom: 32px;
    animation: fadeUp 1.2s ease forwards;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    animation: fadeUp 1.6s ease forwards;
}

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


.statistics {
    padding: 60px 0;
    background-color: #111827;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    background: #1F2937;
    padding: 24px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s;
}

.stat-number {
    font-size: 42px;
    font-weight: 600;
    color: #F59E0B;
    margin-bottom: 8px;
}

.stat-label {
    color: #94A3B8;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.section {
    padding: 40px 0;
}

.cards-grid,
.courses-grid,
.screenshots-grid,
.testimonials-grid,
.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .cards-grid,
    .courses-grid,
    .screenshots-grid,
    .testimonials-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .cards-grid,
    .courses-grid,
    .screenshots-grid,
    .testimonials-grid,
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.card-icon {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-end;
    flex-direction: row;
    gap: 10px;
    border-bottom: 1px solid #334155;
    padding-bottom: 8px;
}

.card,
.course-card,
.screenshot-card,
.testimonial-card,
.pricing-card {
    position: relative;
    background: #1F2937;
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card:hover,
.course-card:hover,
.screenshot-card:hover,
.pricing-card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    transform: translateY(-4px);
}


.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.card-title,
.course-title {
    font-size: 22px;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1.25;
    padding-right: 16px;
    transition: color 0.3s ease;
    margin: 0;
}


.card-avatar {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    object-fit: cover;
    border: 2px solid #111827;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    flex-shrink: 0;
}

.card-description {
    color: #94A3B8;
    font-size: 14px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid rgba(51, 65, 85, 0.5);
    margin-top: auto;
}

.card-author,
.course-students {
    font-size: 14px;
    font-weight: 500;
    color: #64748B;
}

.card-link,
.course-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 700;
    color: #F59E0B;
    text-decoration: none;
    opacity: 0;
    transform: translateX(-8px);
    transition: all 0.3s ease;
}

.card:hover .card-link,
.course-card:hover .course-btn,
.screenshot-card:hover .screenshot-link,
.testimonial-card:hover .testimonial-link {
    opacity: 1;
    transform: translateX(0);
}

.card-link svg,
.course-btn svg {
    width: 1rem;
    height: 1rem;
}

.screenshot-image {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    margin-bottom: 16px;
}


.screenshot-image img {
    border-radius: 8px;
    border: 2px solid #0F172A;
}

.screenshot-title {
    font-size: 18px;
    font-weight: 600;
    color: #FFFFFF;
    padding: 1rem 0 0;
    text-align: center;
    transition: color 0.3s ease;
    margin: 0;
}

.testimonial-rating {
    color: #F59E0B;
    font-size: 20px;
}

.testimonial-text {
    color: #FFFFFF;
    margin-bottom: 16px;
    margin-top: 16px;
    line-height: 1.6;
    font-size: 14px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #F59E0B, #2563EB);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.testimonial-name {
    font-weight: 600;
    transition: color 0.3s ease;
    margin: 0;
}

.testimonial-role {
    color: #94A3B8;
    font-size: 12px;
}


.btn {
    display: inline-block;
    padding: 0.6875rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 0.875rem;
}

.btn-send {
    background: #2563EB;
    color: #FFFFFF;
}

.btn-send:hover {
    background: #1D4ED8;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #9CA3AF;
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-outline:hover {
    color: #2563EB;
}

.btn-full {
    width: 100%;
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: #1F2937;
    border-radius: 20px;
    padding: 32px;
}

.form-header {
    text-align: center;
    margin-bottom: 24px;
}

.form-header h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
}

.form-header p {
    font-size: 16px;
    font-weight: 400;
}

.lead-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-group label {
    font-weight: 400;
    color: #FFFFFF;
    font-size: 14px;
    margin-left: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    border: 1px solid #334155;
    border-radius: 4px;
    background: #0F172A;
    color: #FFFFFF;
    font-size: 14px;
    transition: border-color 0.3s;
    resize: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #9CA3AF;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #64748B;
}

.form-message {
    text-align: center;
    padding: 12px;
    border-radius: 8px;
    margin-top: 8px;
    display: none;
}

.form-message.success {
    background: #22C55E;
    color: white;
    display: block;
}

.form-message.error {
    background: #EF4444;
    color: white;
    display: block;
}

.select-wrapper {
    position: relative;
    width: 100%;
}

.select-wrapper select {
    width: 100%;
    padding: 12px;
    border: 1px solid #334155;
    border-radius: 4px;
    background: #0F172A;
    color: #FFFFFF;
    font-size: 14px;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
    transition: border-color 0.3s;
}

.select-wrapper select:focus {
    outline: none;
    border-color: #9CA3AF;
}

.select-wrapper .select-arrow {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    transition: transform 0.3s ease;
}

.select-wrapper select:focus + .select-arrow {
    transform: translateY(-50%) rotate(180deg);
}

.select-wrapper.open .select-arrow {
    transform: translateY(-50%) rotate(180deg);
}

.footer {
    background: #1F2937;
    border-top: 1px solid #334155;
    padding: 32px 0 16px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 48px;
    margin-bottom: 16px;
}

.footer-logo img {
    width: 80px;
}

.footer-logo p {
    color: #94A3B8;
    margin-top: 8px;
    font-size: 14px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-column h4 {
    margin-bottom: 16px;
    color: #FFFFFF;
}

.footer-column a {
    display: block;
    color: #94A3B8;
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.3s;
    font-size: 14px;
}

.footer-column a:hover {
    color: #FFFFFF;
}

.footer-bottom {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid #334155;
    color: #64748B;
    font-size: 12px;
}

.footer-made-with {
    display: flex;
    align-items: center;
    gap: 4px;
}

.heart-icon {
    color: #EF4444;
    fill: #EF4444;
}

.footer-version button {
    background: transparent;
    border: none;
    color: #64748B;
    font-family: monospace;
    font-size: 12px;
    opacity: 0.5;
    cursor: pointer;
}

@media (min-width: 768px) {
    .footer-bottom-new {
        flex-direction: row;
    }
}


@media (max-width: 768px) {
    h1 {
        font-size: 36px;
    }

    h2 {
        font-size: 28px;
    }

    .nav-links {
        display: none;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .pricing-card.popular {
        transform: scale(1);
    }

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

    .nav-buttons {
        gap: 8px;
    }

    .btn {
        padding: 8px 16px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 16px;
    }

    .section {
        padding: 48px 0;
    }

    .header{
        padding: 10px 0px;
    }
}

.course-card {
    background-color: #1F2937;
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.course-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.course-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1.2;
    margin: 0 0 16px 0;
    transition: color 0.3s ease;
    flex: 1;
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
}

.course-cover {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    object-fit: cover;
    border: 2px solid #0F172A;
    flex-shrink: 0;

}

.course-cover-placeholder {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(147, 51, 234, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    border: 2px solid #0F172A;
    flex-shrink: 0;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid rgba(51, 65, 85, 0.5);
    margin-top: 0;
}

.course-author {
    color: #64748B;
    font-size: 12px;
    font-weight: 500;
}

.course-button {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 700;
    opacity: 0;
    transform: translateX(-8px);
    transition: all 0.3s ease;
}

.course-card:hover .course-button {
    opacity: 1;
    transform: translateX(0);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

@media (max-width: 768px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }

    .course-card {
        padding: 16px;
    }

    .course-card h3 {
        font-size: 18px;
    }

    .course-cover,
    .course-cover-placeholder {
        width: 48px;
        height: 48px;
    }
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    margin-top: auto;
}

.course-students {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #94A3B8;
    font-size: 13px;
}

.course-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: #F59E0B;
    font-size: 13px;
    font-weight: 600;
}

.course-rating-stars {
    display: flex;
    gap: 2px;
}

.course-rating-stars svg {
    width: 14px;
    height: 14px;
    fill: #F59E0B;
    stroke: #F59E0B;
}

.course-rating-stars svg.empty {
    fill: #334155;
    stroke: #334155;
}

.course-description {
    color: #94A3B8;
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;

}

.course-rating {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #F59E0B;
    font-size: 13px;
    font-weight: 600;
}

.course-rating-stars {
    display: flex;
    gap: 2px;
    align-items: center;
}

.star {
    width: 16px;
    height: 16px;
}

.star-full {
    color: #F59E0B;
    fill: #F59E0B;
    stroke: #F59E0B;
}

.star-half {
    color: #F59E0B;
    fill: #F59E0B;
    stroke: #F59E0B;
}

.star-empty {
    color: #475569;
    fill: none;
    stroke: #475569;
}

.teacher-card {
    position: relative;
    overflow: hidden;
}


.teacher-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
}

.teacher-card-button {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    opacity: 0;
    transform: translateX(-8px);
    transition: all 0.3s ease;
}

.teacher-card:hover .teacher-card-button {
    opacity: 1;
    transform: translateX(0);
}

.teacher-card-button svg {
    width: 16px;
    height: 16px;
    stroke: #FFFFFF;
}


.pricing-card.popular {
    border-color: #F59E0B;
}

.popular-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: #F59E0B;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    z-index: 1;
}

.pricing-name {
    font-size: 20px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 12px;
}

.pricing-price {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid #334155;
}

.price-amount {
    font-size: 32px;
    font-weight: 700;
    color: #F59E0B;
}

.price-period {
    font-size: 14px;
    color: #94A3B8;
}

.pricing-features {
    list-style: none;
    margin: 0 0 24px 0;
    padding: 0;
    flex: 1;
}

.pricing-features li {
    padding: 8px 0;
    color: #94A3B8;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pricing-features li::before {
    display: none;
}

.pricing-card .btn-pricing {
    width: 100%;
    padding: 12px;
    background: #F59E0B;
    border: none;
    border-radius: 8px;
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s ease;
}

.pricing-card .btn-pricing:hover {
    background: #D97706;
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #FFFFFF;
    margin: 5px 0;
    transition: all 0.3s ease;
    border-radius: 3px;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
        order: 2;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(31, 41, 55, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        gap: 0;
        padding: 20px;
        border-top: 1px solid #334155;
        z-index: 1000;
    }

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

    .nav-links a {
        padding: 12px 0;
        font-size: 16px;
        border-bottom: 1px solid #334155;
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .nav-buttons {
        order: 1;
        gap: 12px;
    }

    .logo {
        order: 0;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

@media (max-width: 480px) {
    .logo img {
        width: 45px;
    }

    .nav-buttons {
        gap: 0px;
    }

    .nav-buttons .btn-outline,
    .nav-buttons .btn-primary {
        padding: 6px;
    }

    .nav-buttons a{
        font-size: 12px;
    }

    .nav-buttons svg {
        width: 16px;
        height: 16px;
    }

    .mobile-menu-btn {
        padding: 6px;
    }


}