/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background-color: #f7fafc;
    scroll-behavior: smooth;
}

/* Color Variables */
:root {
    --construction-blue: #1e3a8a;
    --construction-orange: #ea580c;
    --construction-gray: #64748b;
    --construction-light: #e2e8f0;
    --white: #ffffff;
    --black: #000000;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-construction {
    background: var(--construction-blue);
    color: var(--white);
    box-shadow: 0 20px 50px -10px rgba(30, 58, 138, 0.3);
}

.btn-construction:hover {
    background: rgba(30, 58, 138, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 25px 60px -15px rgba(30, 58, 138, 0.4);
}

.btn-hero {
    background: linear-gradient(135deg, var(--construction-blue), #3730a3);
    color: var(--white);
    font-size: 1.125rem;
    padding: 1rem 2rem;
    box-shadow: 0 30px 60px -15px rgba(30, 58, 138, 0.4);
    text-shadow: 0 4px 20px rgba(30, 58, 138, 0.3);
}

.btn-hero:hover {
    transform: scale(1.05);
    box-shadow: 0 35px 70px -20px rgba(30, 58, 138, 0.5);
}

.btn-outline-hero {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
    font-size: 1.125rem;
    padding: 1rem 2rem;
}

.btn-outline-hero:hover {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.btn-accent {
    background: linear-gradient(135deg, var(--construction-orange), #f97316);
    color: var(--white);
}

.btn-accent:hover {
    transform: scale(1.05);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--construction-light);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--construction-blue);
}

.logo-accent {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--construction-orange);
    margin-left: 0.25rem;
}

.nav-links {
    display: none;
    gap: 2rem;
}

.nav-link {
    color: var(--construction-gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--construction-blue);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-btn {
    display: none;
}

.mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: none;
    border: none;
    color: var(--construction-blue);
    font-size: 1.25rem;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    border-top: 1px solid var(--construction-light);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.mobile-menu.active {
    display: block;
}

.mobile-nav-links {
    padding: 1rem 0;
}

.mobile-nav-link {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--construction-gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.mobile-nav-link:hover {
    color: var(--construction-blue);
}

.mobile-contact-btn {
    margin: 1rem;
    width: calc(100% - 2rem);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to right,
        rgba(30, 58, 138, 0.9),
        rgba(30, 58, 138, 0.7),
        transparent
    );
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--white);
}

.hero-text {
    max-width: 64rem;
    margin: 0 auto;
}

.hero-title {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 4px 20px rgba(30, 58, 138, 0.3);
}

.hero-title-accent {
    display: block;
    color: var(--construction-orange);
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    max-width: 32rem;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
    text-shadow: 0 4px 20px rgba(30, 58, 138, 0.3);
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 3rem;
    align-items: center;
}

.hero-contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    opacity: 0.8;
    align-items: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-item i {
    color: var(--construction-orange);
    font-size: 1.25rem;
}

.contact-item span {
    font-weight: 500;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.scroll-mouse {
    width: 1.5rem;
    height: 2.5rem;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 1.25rem;
    display: flex;
    justify-content: center;
}

.scroll-dot {
    width: 0.25rem;
    height: 0.75rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 0.125rem;
    margin-top: 0.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Services Section */
.services-section {
    padding: 5rem 0;
    background: linear-gradient(180deg, #f7fafc, #edf2f7);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    color: var(--construction-blue);
    margin-bottom: 1.5rem;
}

.section-description {
    font-size: 1.25rem;
    color: var(--construction-gray);
    max-width: 48rem;
    margin: 0 auto;
}

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

.service-card {
    background: var(--white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 20px -2px rgba(100, 116, 139, 0.1);
    transition: all 0.5s ease;
    group: true;
}

.service-card:hover {
    box-shadow: 0 20px 40px -10px rgba(100, 116, 139, 0.2);
    transform: translateY(-5px);
}

.service-image {
    position: relative;
    height: 35rem;
    overflow: hidden;
}

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

.service-card:hover .service-image img {
    transform: scale(1.1);
}

.service-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(30, 58, 138, 0.8),
        transparent
    );
    opacity: 0;
    transition: opacity 0.1s ease;
}

.service-card:hover .service-overlay {
    opacity: 1;
}

.service-content {
    padding: 1.5rem;
}

.service-title {
    font-size: 1.5rem;
    color: var(--construction-blue);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.service-card:hover .service-title {
    color: var(--construction-orange);
}

.service-description {
    font-size: 1.125rem;
    color: var(--construction-gray);
    margin-bottom: 1.5rem;
}

.service-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    color: var(--construction-gray);
}

.feature-dot {
    width: 0.5rem;
    height: 0.5rem;
    background: var(--construction-orange);
    border-radius: 50%;
    flex-shrink: 0;
}

.service-btn {
    width: 100%;
    transition: all 0.3s ease;
}

.service-card:hover .service-btn {
    background: var(--construction-orange);
}

.service-btn i {
    transition: transform 0.3s ease;
}

.service-card:hover .service-btn i {
    transform: translateX(4px);
}

/* Projects Section */
.projects-section {
    padding: 5rem 0;
    background: var(--white);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 5rem;
}

.project-card {
    background: var(--white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 20px -2px rgba(100, 116, 139, 0.1);
    transition: all 0.5s ease;
}

.project-card:hover {
    box-shadow: 0 20px 40px -10px rgba(100, 116, 139, 0.2);
    transform: translateY(-5px);
}

.project-image {
    position: relative;
    height: 16rem;
    overflow: hidden;
}

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

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(30, 58, 138, 0.9),
        transparent
    );
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--construction-orange);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.project-link-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    color: var(--white);
    cursor: pointer;
    opacity: 0;
    transition: all 0.3s ease;
}

.project-card:hover .project-link-btn {
    opacity: 1;
}

.project-link-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.project-content {
    padding: 1.5rem;
}

.project-title {
    font-size: 1.25rem;
    color: var(--construction-blue);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.project-card:hover .project-title {
    color: var(--construction-orange);
}

.project-description {
    color: var(--construction-gray);
}

/* Videos Section */
.videos-header {
    text-align: center;
    margin-bottom: 4rem;
}

.videos-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.video-card {
    background: var(--white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 20px -2px rgba(100, 116, 139, 0.1);
    transition: all 0.3s ease;
}

.video-card:hover {
    box-shadow: 0 10px 30px -5px rgba(100, 116, 139, 0.15);
    transform: translateY(-2px);
}

.video-thumbnail {
    position: relative;
    height: 12rem;
    overflow: hidden;
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-card:hover .video-thumbnail img {
    transform: scale(1.05);
}

.video-overlay {
    position: absolute;
    inset: 0;
    background: rgba(30, 58, 138, 0.4);
    transition: background 0.3s ease;
}

.video-card:hover .video-overlay {
    background: rgba(30, 58, 138, 0.6);
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 4rem;
    height: 4rem;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-card:hover .video-play-btn {
    transform: translate(-50%, -50%) scale(1.1);
    background: rgba(255, 255, 255, 0.3);
}

.video-duration {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    background: rgba(30, 58, 138, 0.8);
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.875rem;
}

.video-content {
    padding: 1rem;
}

.video-title {
    font-weight: 500;
    color: var(--construction-blue);
    transition: color 0.3s ease;
    line-height: 1.4;
}

.video-card:hover .video-title {
    color: var(--construction-orange);
}

/* Contact Section */
.contact-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--construction-blue), #3730a3);
    color: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

.contact-form-card {
    background: var(--white);
    border-radius: 1rem;
    box-shadow: 0 4px 20px -2px rgba(100, 116, 139, 0.1);
    overflow: hidden;
}

.form-header {
    text-align: center;
    padding: 2rem 2rem 0;
}

.form-title {
    font-size: 2rem;
    color: var(--construction-blue);
    margin-bottom: 0.5rem;
}

.form-description {
    color: var(--construction-gray);
}

.contact-form {
    padding: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--construction-light);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--construction-blue);
}

.form-textarea {
    resize: vertical;
    min-height: 8rem;
}

.form-submit {
    width: 100%;
    font-size: 1.125rem;
    padding: 1rem;
}

.contact-info {
    color: var(--white);
}

.contact-header {
    margin-bottom: 2rem;
}

.contact-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.contact-description {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.contact-details {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-detail {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon {
    background: var(--construction-orange);
    padding: 0.75rem;
    border-radius: 0.5rem;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.contact-text h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.contact-text p {
    opacity: 0.8;
}

.contact-text small {
    font-size: 0.875rem;
    opacity: 0.6;
}

.contact-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat {
    text-align: center;
}

.stat i {
    color: var(--construction-orange);
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--construction-blue);
    color: var(--white);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 3rem 0;
}

.footer-section {
    margin-bottom: 2rem;
}

.footer-logo {
    margin-bottom: 1rem;
}

.footer-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-logo-accent {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--construction-orange);
}

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

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

.social-link {
    width: 2.5rem;
    height: 2.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--construction-orange);
    transform: translateY(-2px);
}

.footer-title {
    font-size: 1.25rem;
    color: var(--construction-orange);
    margin-bottom: 1rem;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-contact {
    margin-bottom: 1rem;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.footer-contact-item i {
    color: var(--construction-orange);
    font-size: 1.25rem;
}

.footer-contact-item span {
    opacity: 0.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-copyright {
    opacity: 0.6;
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: 1.5rem;
}

.footer-legal a {
    font-size: 0.875rem;
    opacity: 0.6;
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

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

/* Responsive Design */
@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
    }

    .hero-contact-info {
        flex-direction: row;
        justify-content: center;
    }

    .contact-btn {
        display: flex;
    }

    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-details {
        grid-template-columns: repeat(2, 1fr);
    }

    .videos-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 4rem;
    }

    .hero-description {
        font-size: 1.5rem;
    }

    .hero-text {
        text-align: left;
    }

    .hero-buttons {
        justify-content: flex-start;
    }

    .hero-contact-info {
        justify-content: flex-start;
    }

    .nav-links {
        display: flex;
    }

    .mobile-menu-toggle {
        display: none;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .videos-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 5rem;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .videos-grid {
        grid-template-columns: repeat(5, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 1280px) {
    .hero-title {
        font-size: 7rem;
    }

    .container {
        padding: 0 2rem;
    }
}

/* Utilities */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Smooth scrolling for anchor links */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--construction-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--construction-orange);
}