:root {
    --primary-color: #0066cc;
    --secondary-color: #00a3e0;
    --text-color: #333;
    --light-bg: #f5f7fa;
    --white: #ffffff;
    --dark-bg: #1a1a1a;
    --border-color: #ddd;
    --success-color: #28a745;
    --error-color: #dc3545;
}

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

html {
    scroll-behavior: smooth;
}

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

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

h1, h2, h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

header.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 1.5rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo h1 {
    font-size: 2rem;
    margin-bottom: 0.3rem;
    color: var(--white);
}

.logo .tagline {
    font-size: 0.95rem;
    opacity: 0.9;
    margin: 0;
}

.header-contact {
    text-align: right;
}

.header-contact p {
    margin: 0.3rem 0;
    font-size: 0.95rem;
}

nav.navbar {
    background-color: var(--white);
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

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

.nav-link {
    display: block;
    padding: 1rem 0;
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.hero {
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.8) 0%, rgba(0, 163, 224, 0.8) 100%), url('../img/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--white);
    padding: 5rem 2rem;
    text-align: center;
    min-height: 500px;
    display: block;
}

.hero-container {
    position: relative;
    display: block;
    height: 100%;
}

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

.hero-slider {
    position: relative;
    width: 100%;
}

.slide {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    width: 100%;
}

.prev, .next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    padding: 16px;
    margin-top: -22px;
    color: white;
    font-weight: bold;
    font-size: 18px;
    transition: 0.6s ease;
    border-radius: 0 3px 3px 0;
    user-select: none;
    background-color: rgba(255,255,255,0.1);
    z-index: 10;
}

.next {
    right: -20px;
    border-radius: 3px 0 0 3px;
}

.prev {
    left: -20px;
    border-radius: 0 3px 3px 0;
}

.prev:hover, .next:hover {
    background-color: rgba(255,255,255,0.3);
}

.slider-dots {
    text-align: center;
    margin-top: 2rem;
}

.dot {
    cursor: pointer;
    height: 12px;
    width: 12px;
    margin: 0 4px;
    background-color: rgba(255,255,255,0.4);
    border-radius: 50%;
    display: inline-block;
    transition: background-color 0.6s ease;
}

.active, .dot:hover {
    background-color: var(--white);
}

.fade {
    animation-name: fade;
    animation-duration: 1.5s;
}

@keyframes fade {
    from {opacity: .4} 
    to {opacity: 1}
}

.hero-content {
    flex: 1;
    text-align: left;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--white);
    animation: fadeInUp 0.8s ease-out forwards;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.cta-button {
    display: inline-block;
    background-color: var(--white);
    color: var(--primary-color);
    padding: 0.8rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid var(--white);
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

.cta-button:hover {
    background-color: transparent;
    color: var(--white);
    transform: scale(1.05);
}

.cta-button-white {
    display: inline-block;
    background-color: var(--white);
    color: var(--primary-color);
    padding: 0.8rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid var(--white);
}

.cta-button-white:hover {
    background-color: var(--light-bg);
    transform: scale(1.05);
}

.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 3rem 2rem;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.95;
}

.services-preview,
.why-choose-us,
.engagement-models,
.stats-section {
    padding: 3rem 0;
}

.services-preview {
    background-color: var(--light-bg);
}

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

.service-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

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

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    transition: transform 0.3s ease;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    margin-bottom: 0.8rem;
}

.service-card p {
    color: #666;
}

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

.feature {
    padding: 1.5rem;
    text-align: center;
    border-left: 4px solid var(--primary-color);
    background-color: var(--light-bg);
}

.feature h3 {
    margin-bottom: 0.5rem;
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 3rem 2rem;
    text-align: center;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.about-content {
    padding: 2rem 0;
}

.about-content h2 {
    text-align: left;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.about-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    text-align: justify;
}

.about-content ul {
    list-style-position: inside;
    line-height: 2;
    margin: 1rem 0;
}

.about-content li {
    margin-bottom: 0.5rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.value-item {
    background-color: var(--light-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border-top: 4px solid var(--primary-color);
}

.value-item h3 {
    text-align: center;
    margin-bottom: 0.8rem;
}

.value-item p {
    color: #666;
    text-align: center;
}

.team-section {
    padding: 2rem 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.team-member {
    background-color: var(--light-bg);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
}

.team-member:hover .member-avatar {
    transform: scale(1.1) rotate(5deg);
    transition: transform 0.3s ease;
}

.member-avatar {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.team-member h3 {
    margin-bottom: 0.3rem;
}

.team-member .role {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.team-member p {
    color: #666;
    font-size: 0.95rem;
}

.services-detailed {
    padding: 2rem 0;
}

.service-detail {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.service-detail:last-child {
    border-bottom: none;
}

.service-detail h2 {
    text-align: left;
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.service-detail ul {
    list-style-position: inside;
    line-height: 2;
    margin: 1rem 0;
}

.service-detail li {
    margin-bottom: 0.3rem;
}

.service-detail p {
    margin-bottom: 0.8rem;
}

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

.model {
    background-color: var(--light-bg);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border-left: 4px solid var(--primary-color);
}

.model h3 {
    text-align: center;
    margin-bottom: 0.8rem;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.portfolio-item {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.portfolio-item:hover .portfolio-image {
    transform: scale(1.1) rotate(5deg);
    transition: transform 0.3s ease;
}

.portfolio-image {
    font-size: 3rem;
    padding: 2rem;
    background-color: var(--light-bg);
    text-align: center;
}

.portfolio-item h3 {
    padding: 1rem 1.5rem 0;
    margin-bottom: 0.3rem;
}

.portfolio-item .client {
    padding: 0 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

.portfolio-item .description {
    padding: 0.5rem 1.5rem;
    color: #666;
}

.portfolio-item .technologies {
    padding: 0.5rem 1.5rem;
    font-size: 0.9rem;
    color: #666;
}

.portfolio-item .view-project {
    display: block;
    padding: 1rem 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
    transition: color 0.3s ease;
}

.portfolio-item .view-project:hover {
    color: var(--secondary-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
    padding: 2rem;
    background-color: var(--light-bg);
    border-radius: 8px;
    border-top: 4px solid var(--primary-color);
}

.stat h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat p {
    font-size: 1.1rem;
    color: #666;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin: 3rem 0;
}

.contact-info h2,
.contact-form h2 {
    text-align: left;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.info-item {
    margin-bottom: 2rem;
}

.info-item h3 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.info-item p {
    color: #666;
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.social-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

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

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.submit-btn {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

footer.footer {
    background-color: var(--dark-bg);
    color: var(--white);
    padding: 3rem 0 1rem;
    margin-top: 3rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 1rem;
}

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

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

.footer-section a {
    color: #bbb;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--white);
}

.footer-section p {
    color: #bbb;
    line-height: 1.8;
}

.footer-bottom {
    max-width: 1200px;
    margin: 2rem auto 0;
    padding: 1.5rem 20px 0;
    border-top: 1px solid #444;
    text-align: center;
    color: #999;
    font-size: 0.9rem;
}

.footer-links {
    margin-top: 0.5rem;
}

.footer-links a {
    color: #999;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
}

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

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .header-contact {
        text-align: center;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0;
    }

    .nav-link {
        padding: 0.8rem 0;
        border-bottom: 1px solid var(--border-color);
    }

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

    .prev { left: 0; }
    .next { right: 0; }

    .hero-content {
        text-align: center;
        margin-bottom: 2rem;
    }

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

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

    h2 {
        font-size: 1.8rem;
    }

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

    .services-grid,
    .portfolio-grid,
    .team-grid,
    .features,
    .values-grid,
    .models-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* Technologies Section */
.technologies-section {
    padding: 4rem 0;
    background-color: var(--white);
    text-align: center;
}

.section-subtitle {
    max-width: 700px;
    margin: -1rem auto 3rem;
    color: #666;
    font-size: 1.1rem;
}

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

.tech-item {
    background: var(--light-bg);
    padding: 2rem 1rem;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.tech-item:hover .tech-icon {
    transform: scale(1.1) rotate(5deg);
    transition: transform 0.3s ease;
}

.tech-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

@media (max-width: 992px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .tech-grid {
        grid-template-columns: 1fr;
    }
}

/* Scroll Animation Classes */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}