/* ==================== Global Styles ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1e40af;
    --secondary-color: #7c3aed;
    --accent-color: #f59e0b;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
    --text-color: #374151;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

/* ==================== Navigation Bar ==================== */
.navbar {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 50px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
}

.logo i {
    font-size: 2rem;
}

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

.nav-menu a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 0.5rem;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* ==================== Hero Section ==================== */
.hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

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

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

.btn {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--accent-color);
    color: #fff;
}

.btn-primary:hover {
    background: #d97706;
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hero-placeholder {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    color: rgba(255, 255, 255, 0.3);
}

/* ==================== Services Section ==================== */
.services {
    padding: 6rem 0;
    background: var(--light-color);
}

.services h2,
.features h2,
.versions h2,
.demo h2,
.testimonials h2,
.contact h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-color);
    margin-bottom: 3rem;
}

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

.service-card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
    color: #fff;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.service-card p {
    color: var(--text-color);
}

/* ==================== Features Section ==================== */
.features {
    padding: 6rem 0;
}

.features-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.feature-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 2rem;
    padding: 2rem;
    background: var(--light-color);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.feature-number {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    opacity: 0.2;
}

.feature-content h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.feature-content p {
    color: var(--text-color);
    font-size: 1rem;
}

/* ==================== Versions Section ==================== */
.versions {
    padding: 6rem 0;
    background: var(--light-color);
}

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

.version-card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.version-card:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow);
}

.version-icon {
    width: 60px;
    height: 60px;
    background: var(--success-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: #fff;
}

.version-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.version-card p {
    color: var(--text-color);
}

/* ==================== Demo & Videos Section ==================== */
.demo {
    padding: 6rem 0;
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.video-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.video-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-card h3 {
    font-size: 1.2rem;
    color: var(--dark-color);
    padding: 1.5rem 1.5rem 0.5rem;
}

.video-card p {
    color: var(--text-color);
    padding: 0 1.5rem 1.5rem;
}

.demo-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    padding: 3rem;
    border-radius: 10px;
    text-align: center;
}

.demo-section h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.demo-section p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

/* ==================== Testimonials Section ==================== */
.testimonials {
    padding: 6rem 0;
    background: var(--light-color);
}

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

.testimonial-card {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.testimonial-card:hover {
    box-shadow: var(--shadow);
}

.stars {
    margin-bottom: 1rem;
}

.stars i {
    color: var(--accent-color);
    font-size: 1rem;
}

.testimonial-card p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    font-style: italic;
    color: var(--text-color);
}

.testimonial-author h4 {
    color: var(--dark-color);
    margin-bottom: 0.2rem;
}

.testimonial-author p {
    font-size: 0.9rem;
    color: var(--text-color);
    margin: 0;
    font-style: normal;
}

/* ==================== Stats Section ==================== */
.stats {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
}

/* ==================== Contact Section ==================== */
.contact {
    padding: 6rem 0;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-form {
    background: var(--light-color);
    padding: 2rem;
    border-radius: 10px;
}

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

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 5px rgba(30, 64, 175, 0.3);
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.info-item {
    display: flex;
    gap: 1.5rem;
}

.info-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-content h3 {
    color: var(--dark-color);
    margin-bottom: 0.3rem;
}

.info-content p {
    color: var(--text-color);
    font-size: 0.95rem;
}

/* ==================== Footer ==================== */
.footer {
    background: var(--dark-color);
    color: #fff;
    padding: 3rem 0 1rem;
}

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

.footer-section h3 {
    margin-bottom: 1rem;
}

.footer-section p {
    margin-bottom: 1rem;
    opacity: 0.8;
}

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

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

.footer-section a {
    color: #fff;
    opacity: 0.7;
    transition: var(--transition);
}

.footer-section a:hover {
    opacity: 1;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
    opacity: 0.7;
}

/* ==================== Responsive Design ==================== */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: #fff;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        gap: 1rem;
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

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

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

    .hero-placeholder {
        height: 300px;
        font-size: 6rem;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .contact-form,
    .contact-info {
        background: var(--light-color);
        padding: 2rem;
        border-radius: 10px;
    }

    .services h2,
    .features h2,
    .versions h2,
    .demo h2,
    .testimonials h2,
    .contact h2 {
        font-size: 2rem;
    }

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

    .feature-item {
        grid-template-columns: 1fr;
    }

    .feature-number {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .logo {
        font-size: 1.2rem;
    }

    .nav-menu {
        gap: 0.5rem;
        padding: 1rem 0;
    }

    .hero {
        padding: 3rem 0;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-buttons {
        gap: 0.5rem;
    }

    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }

    .services-grid,
    .versions-grid,
    .videos-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .service-card,
    .version-card,
    .testimonial-card {
        padding: 1.5rem;
    }

    .demo-section {
        padding: 1.5rem;
    }

    .stats-grid {
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 0.9rem;
    }

    .footer-content {
        gap: 1.5rem;
    }
}

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

.service-card,
.feature-item,
.version-card,
.video-card,
.testimonial-card {
    animation: fadeInUp 0.6s ease forwards;
}

.service-card:nth-child(1) {
    animation-delay: 0.1s;
}

.service-card:nth-child(2) {
    animation-delay: 0.2s;
}

.service-card:nth-child(3) {
    animation-delay: 0.3s;
}

.service-card:nth-child(4) {
    animation-delay: 0.4s;
}

.service-card:nth-child(5) {
    animation-delay: 0.5s;
}

.service-card:nth-child(6) {
    animation-delay: 0.6s;
}