:root {
    --color-primary: #007bff;
    --color-primary-dark: #0056b3;
    --color-secondary: #6c757d;
    --color-success: #28a745;
    --color-danger: #dc3545;
    --color-background: #ffffff;
    --color-light-gray: #f8f9fa;
    --color-dark-text: #343a40;
    --color-light-text: #ffffff;

    --font-family: 'Poppins', sans-serif;
    --padding-section: 6rem 0;
    --border-radius: 0.5rem;
    --transition: 0.3s ease;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--color-dark-text);
    background-color: var(--color-background);
}

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

a:hover {
    color: var(--color-primary-dark);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

h1, h2 {
    font-weight: 700;
    line-height: 1.2;
}

.section-padding {
    padding: var(--padding-section);
}

.section-title {
    font-size: 2.5rem;
    color: var(--color-dark-text);
    margin-bottom: 0.5rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-secondary);
    margin-bottom: 3rem;
    text-align: center;
}

.tagline {
    display: block;
    text-transform: uppercase;
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-align: center;
    margin-bottom: 0.5rem;
}

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

.btn-primary, .btn-secondary-small {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-light-text);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
}

.btn-secondary-small {
    padding: 0.5rem 1rem;
    background-color: transparent;
    color: var(--color-dark-text);
    border: 1px solid var(--color-secondary);
    font-size: 0.9rem;
}

.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.success-alert {
    background-color: #d4edda;
    color: var(--color-success);
}

.error-alert {
    background-color: #f8d7da;
    color: var(--color-danger);
}

.navbar {
    background-color: var(--color-light-text);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark-text);
}

.nav-logo {
    height: 35px;
    width: auto;
    object-fit: contain;
}

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

.nav-links {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--color-dark-text);
    font-weight: 500;
    padding-bottom: 5px;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    display: block;
    margin-top: 5px;
    background: var(--color-primary);
    transition: width 0.3s;
}

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

.hamburger-menu {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-dark-text);
}

.hero-slider {
    position: relative;
    height: 90vh;
    overflow: hidden; 
} 

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 1s ease;
}

.hero-slide.active {
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 10;
    color: var(--color-light-text);
    text-align: center;
    max-width: 800px;
    padding: 0 1rem;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--color-light-text);
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

.arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.4);
    color: var(--color-light-text);
    border: none;
    padding: 1rem;
    cursor: pointer;
    z-index: 20;
    transition: var(--transition);
}

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

.arrow-left { left: 1rem; }
.arrow-right { right: 1rem; }

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

.service-card {
    background: var(--color-light-text);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.service-icon-wrapper {
    margin-bottom: 1rem;
    height: 60px;
    display: inline-block;
}

.service-card img {
    max-height: 100%;
    width: auto;
}

.service-card h3 {
    color: var(--color-primary-dark);
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-card {
    background: var(--color-light-text);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.project-media img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.5s;
}

.project-media .video-embed-container {
    position: relative;
    height: 250px;
    overflow: hidden;
    width: 100%;
    background-color: #000;
}

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

.project-card:hover .project-media img {
    transform: scale(1.05);
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.about-contact-section .flex-container {
    display: flex;
    gap: 4rem;
    align-items: flex-start;
}

.about-info {
    flex: 1;
    padding-right: 2rem;
}

.contact-form-wrapper {
    flex: 1;
    background: var(--color-light-gray);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.contact-form-wrapper h3 {
    color: var(--color-dark-text);
    margin-bottom: 1.5rem;
    font-size: 1.7rem;
}

.contact-details p {
    margin-top: 1rem;
    font-weight: 500;
}

.contact-details i {
    color: var(--color-primary);
    margin-right: 0.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.contact-form-wrapper input,
.contact-form-wrapper textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ced4da;
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    transition: border-color 0.3s;
}

.contact-form-wrapper input:focus,
.contact-form-wrapper textarea:focus {
    border-color: var(--color-primary);
    outline: none;
}

.btn-full-width {
    width: 100%;
    margin-top: 1rem;
}

footer {
    background-color: var(--color-dark-text);
    color: #bbb;
    padding: 2rem 0;
    font-size: 0.9rem;
}

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

.social-links a {
    color: var(--color-light-text);
    margin-left: 1.5rem;
    font-size: 1.2rem;
}

.social-links a:hover {
    color: var(--color-primary);
}

.btn-scroll-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--color-primary);
    color: var(--color-light-text);
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s, visibility 0.5s;
    z-index: 900;
}

.btn-scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.reveal-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-item.visible {
    opacity: 1;
    transform: translateY(0);
}


@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .section-padding {
        padding: 3rem 0;
    }
    
    .section-title {
        font-size: 2rem;
    }

    .hamburger-menu {
        display: block;
    }
    
    .nav-links {
        position: absolute;
        right: 0;
        top: 100%;
        width: 100%;
        height: auto;
        flex-direction: column;
        background-color: var(--color-light-text);
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        transform: translateY(-1000px);
        transition: transform 0.5s ease-in-out;
        padding: 1rem 0;
    }

    .nav-links.nav-active {
        transform: translateY(0);
    }

    .nav-links li {
        opacity: 0;
        transition: opacity 0.3s ease-in 0.2s;
        text-align: center;
        padding: 0.5rem 0;
    }

    .nav-active li {
        opacity: 1;
    }
    
    .nav-links a {
        padding: 10px 0;
        width: 100%;
        display: block;
    }

    .hero-slider {
        height: 70vh;
    }
    .hero-content h1 {
        font-size: 2rem;
    }
    .hero-content p {
        font-size: 1rem;
    }
    
    .about-contact-section .flex-container {
        flex-direction: column;
        gap: 2rem;
    }

    .about-info {
        padding-right: 0;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    .social-links {
        margin-top: 1rem;
    }
    .social-links a {
        margin: 0 0.5rem;
    }
}