:root {
    --primary-color: #4a90e2;
    --secondary-color: #6c757d;
    --accent-color: #34c759;
    --dark-color: #2c3e50;
    --light-color: #f8f9fa;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    overflow-x: hidden;
}

@keyframes gradientAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.hero-section {
    background: linear-gradient(
            -45deg,
            var(--primary-color),
            #3498db,
            #2980b9,
            #2c3e50
    );
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    color: white;
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 100%);
    opacity: 0.3;
}

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

.feature-card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
    background: white;
    overflow: hidden;
    padding: 30px;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(74, 144, 226, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

.feature-icon {
    font-size: 2rem;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon-wrapper {
    background: var(--primary-color);
}

.feature-card:hover .feature-icon {
    color: white;
}

.language-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    padding: 5px;
}

.language-selector select {
    border: none;
    background: transparent;
    padding: 5px 10px;
    cursor: pointer;
}

.stats-section {
    background: linear-gradient(120deg, var(--primary-color), var(--dark-color));
    color: white;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.stat-item {
    text-align: center;
    padding: 30px;
    position: relative;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 15px;
    background: linear-gradient(120deg, #ffffff, #e0e0e0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.testimonial-section {
    background: var(--light-color);
    padding: 80px 0;
}

.testimonial-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    margin: 20px 0;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.testimonial-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--primary-color);
}

.client-info {
    display: flex;
    align-items: center;
    margin-top: 30px;
}

.client-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-right: 15px;
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

.faq-section {
    padding: 80px 0;
}

.faq-item {
    border: none;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    overflow: hidden;
    background: white;
    padding: 20px;
}

.faq-item:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.faq-item h3 {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0;
    padding: 10px 0;
}

.faq-item h3 i {
    transition: transform 0.3s ease;
}

.faq-item h3[aria-expanded="true"] i {
    transform: rotate(180deg);
}

.faq-item p.answer {
    margin-top: 16px;
}

.changelog-section {
    background: var(--light-color);
    padding: 80px 0;
}

.changelog-item {
    background: white;
    border-radius: 15px;
    padding: 30px;
    margin: 20px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border-left: 5px solid var(--primary-color);
    transition: all 0.3s ease;
}

.changelog-item:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.screenshots-section .carousel {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.screenshots-section .carousel-inner {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 55.25%;
    overflow: hidden;
    background-color: #f8f9fa;
}

.screenshots-section .carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transition: transform 0.5s ease;
}

.screenshots-section .carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    background-color: #f8f9fa;
}

.screenshots-section .carousel-control-prev,
.screenshots-section .carousel-control-next {
    opacity: 0.5;
    transition: opacity 0.3s ease;
}

.screenshots-section .carousel:hover .carousel-control-prev,
.screenshots-section .carousel:hover .carousel-control-next {
    opacity: 0.8;
}

.screenshots-section .carousel-indicators {
    margin-bottom: 10px;
}

.screenshots-section .carousel-indicators button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.5);
    margin: 0 5px;
}

@media (max-width: 768px) {
    .screenshots-section .carousel-inner {
        padding-bottom: 75%;
    }
}

.support-section {
    padding: 80px 0;
}

.support-card {
    background: white;
    border-radius: 15px;
    padding: 40px;
    margin: 20px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    text-align: center;
}

.support-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.btn-custom {
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-custom-light {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
}

.btn-custom-light:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #3a80d2;
    border-color: #3a80d2;
    transform: translateY(-2px);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.section-title p {
    color: var(--secondary-color);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

footer a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: white;
    text-decoration: none;
}

@media (max-width: 768px) {
    .hero-section {
        padding: 4rem 0;
    }

    .stat-number {
        font-size: 2.5rem;
    }

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

    .language-selector {
        top: 10px;
        right: 10px;
    }

    .testimonial-card {
        padding: 25px;
    }

    .stat-item {
        padding: 15px;
    }

    .feature-card, .support-card {
        padding: 20px;
    }
}

@media (max-width: 576px) {
    .hero-section {
        padding: 3rem 0;
    }

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

    .d-flex.justify-content-center.gap-3 {
        flex-direction: column;
        gap: 10px !important;
    }

    .d-flex.justify-content-center.gap-3 .btn {
        width: 100%;
        margin-bottom: 10px;
    }

    .stat-number {
        font-size: 1.8rem;
    }
}

.feature-card ul {
    text-align: left;
    padding-left: 20px;
}

.feature-card ul li {
    margin-bottom: 8px;
}

.screenshots-section .carousel-control-prev-icon,
.screenshots-section .carousel-control-next-icon {
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    width: 2.5rem;
    height: 2.5rem;
    background-size: 50% 50%;
}

.screenshots-section .carousel-caption h5,
.screenshots-section .carousel-caption p {
    color: #333;
    text-shadow: 1px 1px 2px rgba(255, 255, 255, 0.7);
}

.lightbox {
    display: none;
    position: fixed;
    z-index: 1100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    transition: opacity 0.3s ease;
}

.lightbox.show {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    animation: zoomIn 0.3s;
    position: relative;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 30px;
    color: white;
    cursor: pointer;
    z-index: 1101;
    background-color: rgba(0, 0, 0, 0.5);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    transition: all 0.3s ease;
}

.lightbox-close:hover {
    background-color: rgba(255, 0, 0, 0.7);
    transform: scale(1.1);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 30px;
    color: white;
    cursor: pointer;
    z-index: 1101;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.lightbox-nav:hover {
    background-color: rgba(0, 0, 0, 0.8);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

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

@keyframes zoomIn {
    from {transform: scale(0.9);}
    to {transform: scale(1);}
}

body.lightbox-open {
    overflow: hidden;
}