/* nasdev base styles */
 :root {
    --nasdev-primary: #1a1a1a;
    --nasdev-secondary: #f5f5f5;
    --nasdev-accent: #d4af37;
    --nasdev-text: #333;
    --nasdev-light: #fff;
    --nasdev-dark: #000;
}

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

body {
    font-family: 'Poppins', sans-serif;
    color: var(--nasdev-text);
    background-color: var(--nasdev-secondary);
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
}

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

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

/* nasdev utility classes */
.nasdev-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

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

.nasdev-section-title {
    font-size: 2.5rem;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
}

.nasdev-section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60%;
    height: 3px;
    background-color: var(--nasdev-accent);
}

.nasdev-btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--nasdev-accent);
    color: var(--nasdev-light);
    border: none;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.nasdev-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(212, 175, 55, 0.3);
}

/* nasdev navbar */
.nasdev-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    background-color: rgba(26, 26, 26, 0.9);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nasdev-navbar.scrolled {
    padding: 15px 0;
    background-color: rgba(26, 26, 26, 0.95);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.nasdev-navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nasdev-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--nasdev-light);
    font-family: 'Playfair Display', serif;
}

.nasdev-logo span {
    color: var(--nasdev-accent);
}

.nasdev-nav-links {
    display: flex;
    list-style: none;
}

.nasdev-nav-links li {
    margin-left: 30px;
}

.nasdev-nav-links a {
    color: var(--nasdev-light);
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
}

.nasdev-nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--nasdev-accent);
    transition: width 0.3s ease;
}

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

.nasdev-mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--nasdev-light);
    font-size: 1.5rem;
    cursor: pointer;
}

/* nasdev hero section */
.nasdev-hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('https://images.unsplash.com/photo-1493863641943-9b68992a8d07?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1158&q=80') no-repeat center center/cover;
    display: flex;
    align-items: center;
    color: var(--nasdev-light);
    text-align: center;
}

.nasdev-hero-content {
    width: 100%;
}

.nasdev-hero-title {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease;
}

.nasdev-hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 30px;
    font-weight: 300;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInDown 1s ease 0.3s both;
}

.nasdev-hero-btn {
    animation: fadeInDown 1s ease 0.6s both;
}

/* nasdev about section */
.nasdev-about {
    background-color: var(--nasdev-light);
}

.nasdev-about-container {
    display: flex;
    align-items: center;
    gap: 50px;
}

.nasdev-about-img {
    flex: 1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.nasdev-about-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.nasdev-about-img:hover img {
    transform: scale(1.05);
}

.nasdev-about-content {
    flex: 1;
}

.nasdev-about-text {
    margin-bottom: 20px;
    line-height: 1.8;
}

/* nasdev services section */
.nasdev-services {
    background-color: var(--nasdev-secondary);
}

.nasdev-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.nasdev-service-card {
    background-color: var(--nasdev-light);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.nasdev-service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.nasdev-service-icon {
    font-size: 2.5rem;
    color: var(--nasdev-accent);
    margin-bottom: 20px;
}

.nasdev-service-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.nasdev-service-desc {
    line-height: 1.6;
    color: #666;
}

/* nasdev portfolio section */
.nasdev-portfolio {
    background-color: var(--nasdev-light);
}

.nasdev-portfolio-filter {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 10px;
}

.nasdev-filter-btn {
    padding: 8px 20px;
    background: none;
    border: 1px solid #ddd;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nasdev-filter-btn.active, .nasdev-filter-btn:hover {
    background-color: var(--nasdev-accent);
    color: var(--nasdev-light);
    border-color: var(--nasdev-accent);
}

.nasdev-portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.nasdev-portfolio-item {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    height: 250px;
}

.nasdev-portfolio-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.nasdev-portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nasdev-portfolio-item:hover .nasdev-portfolio-overlay {
    opacity: 1;
}

.nasdev-portfolio-item:hover .nasdev-portfolio-img {
    transform: scale(1.1);
}

.nasdev-portfolio-title {
    color: var(--nasdev-light);
    font-size: 1.5rem;
    margin-bottom: 10px;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.nasdev-portfolio-category {
    color: var(--nasdev-accent);
    transform: translateY(20px);
    transition: transform 0.3s ease 0.1s;
}

.nasdev-portfolio-item:hover .nasdev-portfolio-title,
.nasdev-portfolio-item:hover .nasdev-portfolio-category {
    transform: translateY(0);
}

/* nasdev testimonials section */
.nasdev-testimonials {
    background-color: var(--nasdev-secondary);
    position: relative;
    overflow: hidden;
}

.nasdev-testimonials::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1519125323398-675f0ddb6308?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1170&q=80') no-repeat center center/cover;
    opacity: 0.1;
    z-index: 0;
}

.nasdev-testimonials-container {
    position: relative;
    z-index: 1;
}

.nasdev-testimonial-slider {
    max-width: 800px;
    margin: 0 auto;
}

.nasdev-testimonial {
    background-color: var(--nasdev-light);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
    margin: 0 15px;
}

.nasdev-testimonial-img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 20px;
    border: 3px solid var(--nasdev-accent);
}

.nasdev-testimonial-text {
    font-style: italic;
    line-height: 1.8;
    margin-bottom: 20px;
}

.nasdev-testimonial-author {
    font-weight: 600;
}

.nasdev-testimonial-role {
    color: #777;
    font-size: 0.9rem;
}

/* nasdev contact section */
.nasdev-contact {
    background-color: var(--nasdev-light);
}

.nasdev-contact-container {
    display: flex;
    gap: 50px;
}

.nasdev-contact-info {
    flex: 1;
}

.nasdev-contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.nasdev-contact-icon {
    font-size: 1.5rem;
    color: var(--nasdev-accent);
    margin-right: 20px;
    margin-top: 5px;
}

.nasdev-contact-details h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.nasdev-contact-details p {
    color: #666;
    line-height: 1.6;
}

.nasdev-contact-form {
    flex: 1;
    background-color: var(--nasdev-secondary);
    padding: 40px;
    border-radius: 10px;
}

.nasdev-form-group {
    margin-bottom: 20px;
}

.nasdev-form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.nasdev-form-control:focus {
    outline: none;
    border-color: var(--nasdev-accent);
}

textarea.nasdev-form-control {
    min-height: 150px;
    resize: vertical;
}

/* nasdev footer */
.nasdev-footer {
    background-color: var(--nasdev-primary);
    color: var(--nasdev-light);
    padding: 60px 0 20px;
}

.nasdev-footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.nasdev-footer-col h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.nasdev-footer-col h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40%;
    height: 2px;
    background-color: var(--nasdev-accent);
}

.nasdev-footer-about p {
    line-height: 1.6;
    margin-bottom: 20px;
}

.nasdev-social-links {
    display: flex;
    gap: 15px;
}

.nasdev-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.nasdev-social-link:hover {
    background-color: var(--nasdev-accent);
    transform: translateY(-3px);
}

.nasdev-footer-links {
    list-style: none;
}

.nasdev-footer-links li {
    margin-bottom: 10px;
}

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

.nasdev-footer-links a:hover {
    color: var(--nasdev-accent);
    padding-left: 5px;
}

.nasdev-footer-newsletter p {
    margin-bottom: 20px;
    line-height: 1.6;
}

.nasdev-newsletter-form {
    display: flex;
}

.nasdev-newsletter-input {
    flex: 1;
    padding: 12px 15px;
    border: none;
    border-radius: 30px 0 0 30px;
    font-family: inherit;
}

.nasdev-newsletter-btn {
    padding: 0 20px;
    background-color: var(--nasdev-accent);
    color: var(--nasdev-light);
    border: none;
    border-radius: 0 30px 30px 0;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.nasdev-newsletter-btn:hover {
    background-color: #c19b2c;
}

.nasdev-footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* nasdev animations */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.nasdev-float {
    animation: float 3s ease-in-out infinite;
}

/* nasdev responsive */
@media (max-width: 992px) {
    .nasdev-about-container,
    .nasdev-contact-container {
        flex-direction: column;
    }

    .nasdev-about-img,
    .nasdev-about-content,
    .nasdev-contact-info,
    .nasdev-contact-form {
        flex: none;
        width: 100%;
    }

    .nasdev-hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nasdev-nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--nasdev-primary);
        flex-direction: column;
        align-items: center;
        padding-top: 40px;
        transition: left 0.3s ease;
    }

    .nasdev-nav-links.active {
        left: 0;
    }

    .nasdev-nav-links li {
        margin: 15px 0;
    }

    .nasdev-mobile-menu-btn {
        display: block;
    }

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

    .nasdev-hero-subtitle {
        font-size: 1.2rem;
    }

    .nasdev-section {
        padding: 60px 0;
    }

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

@media (max-width: 576px) {
    .nasdev-hero-title {
        font-size: 2rem;
    }

    .nasdev-portfolio-grid {
        grid-template-columns: 1fr;
    }

    .nasdev-contact-form {
        padding: 30px 20px;
    }
}