@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    --primary-color: #0A192F; /* Deep Navy Blue */
    --primary-light: #112240;
    --secondary-color: #FF6B35; /* Vibrant Orange */
    --secondary-hover: #E85D2C;
    --text-dark: #2D3748; /* Dark Grey */
    --text-light: #718096; /* Medium Grey */
    --bg-light: #F7FAFC; /* Very Light Grey/Blue */
    --white: #FFFFFF;
    
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    --box-shadow-hover: 0 30px 60px rgba(10, 25, 47, 0.15);
    --border-radius: 12px;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-light);
    background-color: var(--bg-light);
    line-height: 1.7;
    overflow-x: hidden;
    font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    color: var(--primary-color);
    font-weight: 700;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Utilities */
.text-center { text-align: center; }
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.bg-light { background-color: var(--bg-light); }
.bg-white { background-color: var(--white); }
.bg-primary { background-color: var(--primary-color); color: var(--white); }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 3rem; }
.py-16 { padding: 6rem 0; }
.mt-4 { margin-top: 2rem; }

.section-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
    color: var(--primary-color);
    font-weight: 800;
    letter-spacing: -1px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), #FF9F1C);
    border-radius: 4px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
    text-transform: capitalize;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color), #FF9F1C);
    color: var(--white);
    box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(255, 107, 53, 0.4);
    color: var(--white);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--white);
    color: var(--white);
}

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

/* Header & Navigation */
header {
    background-color: transparent;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
    padding: 15px 0;
}

header.sticky {
    padding: 10px 0;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

header.sticky .logo, header.sticky .nav-links li a {
    color: var(--primary-color);
}

header.sticky .nav-links li a:hover {
    color: var(--secondary-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.5px;
}

.header-logo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

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

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links li a {
    font-family: 'Outfit', sans-serif;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--white);
    position: relative;
    padding: 5px 0;
}

.nav-links li a:hover {
    color: var(--secondary-color);
}

.nav-links li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: -2px;
    left: 0;
    background: var(--secondary-color);
    transition: var(--transition);
    border-radius: 2px;
}

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

.mobile-menu-btn {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--white);
}

header.sticky .mobile-menu-btn {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    display: flex;
    align-items: center;
    background: url('../images/industrial-construction.jpg') center/cover no-repeat;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 25, 47, 0.95) 0%, rgba(10, 25, 47, 0.6) 100%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
}

.hero-subtitle {
    display: inline-block;
    color: var(--secondary-color);
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease;
}

.hero h1 {
    font-size: 4.5rem;
    color: var(--white);
    margin-bottom: 30px;
    letter-spacing: -1.5px;
    line-height: 1.1;
    animation: fadeInUp 1s ease;
}

.hero h1 span {
    color: var(--secondary-color);
}

.hero p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
    max-width: 650px;
    animation: fadeInUp 1.2s ease;
}

.hero-btns {
    display: flex;
    gap: 20px;
    animation: fadeInUp 1.4s ease;
}

/* About Preview */
.about-preview {
    display: flex;
    align-items: center;
    gap: 80px;
}

.about-img {
    flex: 1;
    position: relative;
}

.about-img::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100%;
    height: 100%;
    border: 4px solid var(--secondary-color);
    border-radius: var(--border-radius);
    z-index: 0;
}

.about-img img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    position: relative;
    z-index: 1;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.about-content {
    flex: 1.2;
}

.about-content p {
    font-size: 1.1rem;
    color: var(--text-light);
}

.about-content ul li {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 15px;
}

.about-content ul li i {
    font-size: 1.4rem;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.service-card {
    background: var(--white);
    padding: 50px 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    z-index: -1;
    transition: var(--transition);
    border-radius: var(--border-radius);
}

.service-card:hover {
    transform: translateY(-15px);
    box-shadow: var(--box-shadow-hover);
}

.service-card:hover::before {
    height: 100%;
}

.service-icon {
    font-size: 3.5rem;
    color: var(--secondary-color);
    margin-bottom: 30px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    color: var(--white);
}

.service-card h3 {
    margin-bottom: 20px;
    font-size: 1.8rem;
    transition: var(--transition);
}

.service-card:hover h3, .service-card:hover p {
    color: var(--white);
}

.service-card p {
    font-size: 1.05rem;
    transition: var(--transition);
}

/* Stats Counter */
.stats {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    padding: 80px 0;
    position: relative;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item h3 {
    font-size: 4rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
    font-weight: 800;
}

.stat-item p {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Projects Gallery */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.project-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    height: 350px;
    box-shadow: var(--box-shadow);
}

.project-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 25, 47, 0.9) 0%, rgba(10, 25, 47, 0.2) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 40px;
    opacity: 0;
    transition: var(--transition);
    color: var(--white);
}

.project-overlay h3 {
    color: var(--white);
    font-size: 1.8rem;
    transform: translateY(20px);
    transition: transform 0.4s ease;
}

.project-overlay p {
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 1.1rem;
    transform: translateY(20px);
    transition: transform 0.5s ease;
}

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

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

.project-item:hover .project-overlay h3,
.project-item:hover .project-overlay p {
    transform: translateY(0);
}

/* Contact Form */
.contact-wrapper {
    display: flex;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    margin-top: 60px;
}

.contact-info-panel {
    flex: 1;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    padding: 60px;
}

.contact-info-panel h3 {
    color: var(--white);
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.contact-info-panel p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.contact-info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: center;
}

.contact-info-icon {
    font-size: 1.5rem;
    color: var(--secondary-color);
    background: rgba(255, 255, 255, 0.1);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.contact-info-item h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-info-item span {
    color: rgba(255, 255, 255, 0.8);
}

.contact-form-container {
    flex: 1.5;
    padding: 60px;
}

.contact-form-container h3 {
    font-size: 2.2rem;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-row {
    display: flex;
    gap: 25px;
}

.form-row .form-group {
    flex: 1;
}

.form-control {
    width: 100%;
    padding: 16px 20px;
    border: 1px solid #E2E8F0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1.05rem;
    background-color: #F7FAFC;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary-color);
    background-color: var(--white);
    box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.1);
}

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

.checkbox-group {
    display: flex;
    gap: 15px;
    align-items: flex-start;
    margin-bottom: 30px;
    font-size: 0.95rem;
    color: var(--text-light);
}

.checkbox-group input {
    margin-top: 6px;
    width: 18px;
    height: 18px;
}

/* Footer */
footer {
    background-color: #050C17;
    color: var(--white);
    padding-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 50px;
    margin-bottom: 60px;
}

.footer-col h4 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--secondary-color);
    border-radius: 2px;
}

.footer-col p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.05rem;
}

.footer-links li {
    margin-bottom: 15px;
}

.footer-links li a {
    color: rgba(255,255,255,0.6);
    font-size: 1.05rem;
    display: inline-block;
}

.footer-links li a:hover {
    color: var(--secondary-color);
    transform: translateX(5px);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 25px 0;
    text-align: center;
    font-size: 1rem;
    color: rgba(255,255,255,0.5);
}

/* Page Header for inner pages */
.page-header {
    background: linear-gradient(rgba(10, 25, 47, 0.85), rgba(10, 25, 47, 0.95)), url('../images/epc-projects.jpg') center/cover;
    padding: 180px 0 100px;
    text-align: center;
    color: var(--white);
}

.page-header h1 {
    color: var(--white);
    font-size: 4rem;
}

/* Content Blocks for pages */
.content-block {
    background: var(--white);
    padding: 60px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in-section {
    opacity: 0;
    transform: translateY(30px);
    visibility: hidden;
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    will-change: opacity, visibility;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: none;
    visibility: visible;
}

/* Floating Actions */
.floating-whatsapp {
    position: fixed;
    bottom: 30px;
    left: 30px;
    background-color: #25D366;
    color: white;
    width: 65px;
    height: 65px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.2rem;
    box-shadow: 0 10px 20px rgba(37, 211, 102, 0.3);
    z-index: 100;
    transition: var(--transition);
}

.floating-whatsapp:hover {
    transform: scale(1.1) translateY(-5px);
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--primary-color);
    color: white;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    box-shadow: 0 10px 20px rgba(10, 25, 47, 0.2);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-5px);
}

/* Responsive */
@media (max-width: 992px) {
    .contact-wrapper {
        flex-direction: column;
    }
    .about-preview {
        flex-direction: column;
    }
    .about-img {
        width: 100%;
        margin-bottom: 30px;
    }
    .about-img::before {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 30px 20px;
        gap: 25px;
        box-shadow: 0 20px 30px rgba(0,0,0,0.1);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: var(--transition);
    }
    .nav-links.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }
    .nav-links li a {
        color: var(--primary-color);
        font-size: 1.2rem;
    }
    .mobile-menu-btn {
        display: block;
    }
    .hero h1 {
        font-size: 3rem;
    }
    .section-title {
        font-size: 2.2rem;
    }
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    .contact-form-container {
        padding: 40px 20px;
    }
    .contact-info-panel {
        padding: 40px 20px;
    }
}

/* Add scroll margin to sections to prevent overlap from sticky header */
section {
    scroll-margin-top: 80px;
}