/* ===== CSS VARIABLES ===== */
:root {
    --primary-color: #ff6b35;
    --primary-dark: #e55a2b;
    --secondary-color: #2c3e50;
    --accent-color: #f39c12;
    --dark-color: #1a252f;
    --darker-color: #0d1419;
    --light-color: #ecf0f1;
    --white-color: #ffffff;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --text-muted: #95a5a6;
    --success-color: #27ae60;
    --warning-color: #f1c40f;
    --info-color: #3498db;

    --font-primary: 'Roboto', sans-serif;
    --font-heading: 'Oswald', sans-serif;

    --shadow-light: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-medium: 0 5px 20px rgba(0,0,0,0.15);
    --shadow-heavy: 0 10px 40px rgba(0,0,0,0.2);

    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    overflow-x: hidden;
}

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

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.section-tag {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white-color);
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1.5rem;
}

.section-title.light {
    color: var(--white-color);
}

.text-highlight {
    color: var(--primary-color);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 3rem;
}

.section-subtitle.light {
    color: rgba(255,255,255,0.8);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white-color);
    box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
}

.action-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.view-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.gallery-btn {
    background: rgba(255,255,255,0.9);
    color: var(--dark-color);
}

.gallery-btn:hover {
    background: var(--white-color);
    transform: translateY(-2px);
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 37, 47, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.navbar {
    padding: 1rem 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.logo-text h2 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--white-color);
    margin: 0;
}

.logo-text span {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 400;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: var(--white-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
    border-radius: 2px;
}

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

.nav-contact {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white-color);
    font-weight: 500;
}

.nav-contact i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--white-color);
    margin: 3px 0;
    transition: 0.3s;
}

/* ===== PAGE HERO ===== */
.page-hero {
    height: 50vh;
    min-height: 400px;
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    position: relative;
    margin-top: 80px;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(26, 37, 47, 0.8), rgba(44, 62, 80, 0.6));
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,107,53,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white-color);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
    margin-bottom: 2rem;
    font-size: 1rem;
}

.breadcrumb a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: var(--transition);
}

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

.breadcrumb i {
    color: var(--primary-color);
    font-size: 0.8rem;
}

.page-title {
    font-size: 4rem;
    font-weight: 800;
    color: var(--white-color);
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.page-subtitle {
    font-size: 1.3rem;
    color: rgba(255,255,255,0.8);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 3rem;
}

.hero-stat {
    text-align: center;
}

.hero-stat .stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    font-family: var(--font-heading);
    display: block;
    line-height: 1;
}

.hero-stat .stat-label {
    font-size: 1rem;
    color: rgba(255,255,255,0.8);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== PROJECT FILTERS ===== */
.project-filters {
    padding: 3rem 0;
    background: var(--white-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 80px;
    z-index: 100;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    border: 2px solid var(--light-color);
    color: var(--text-light);
    padding: 12px 24px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--white-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* ===== SECTION HEADERS ===== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

/* ===== ONGOING PROJECTS SLIDER ===== */
.ongoing-projects {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--secondary-color) 100%);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.ongoing-projects::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,107,53,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    pointer-events: none;
}

.project-slider-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.slider-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: var(--shadow-heavy);
}

.slider-track {
    display: flex;
    transition: transform 0.5s ease;
    width: 400%; /* 4 slides */
}

.slider-slide {
    width: 25%; /* Each slide takes 25% of container width */
    display: flex;
    background: var(--white-color);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.slide-image {
    flex: 1;
    position: relative;
    min-height: 400px;
}

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

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(26, 37, 47, 0.7), rgba(44, 62, 80, 0.5));
}

.slide-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    color: var(--white-color);
    z-index: 2;
}

.slide-category {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white-color);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.slide-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--white-color);
}

.slide-location {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 1rem;
    color: rgba(255,255,255,0.9);
}

.slide-progress {
    margin-top: 1rem;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255,255,255,0.3);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-percentage {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-color);
}

.slide-details {
    flex: 1;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.slide-details p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.slide-info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 1rem;
    background: var(--light-color);
    border-radius: 8px;
}

.info-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
    width: 20px;
}

.info-item strong {
    display: block;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 2px;
}

.info-item span {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ===== SLIDER CONTROLS ===== */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white-color);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
    z-index: 3;
    box-shadow: var(--shadow-medium);
}

.slider-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-50%) scale(1.1);
}

.prev-btn {
    left: -25px;
}

.next-btn {
    right: -25px;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 2rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* ===== PROJECT CARDS ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.featured-projects {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.project-card {
    background: var(--white-color);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    opacity: 1;
    transform: translateY(0);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-heavy);
}

.project-card.hidden {
    opacity: 0;
    transform: translateY(30px);
    pointer-events: none;
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.project-image {
    position: relative;
    height: 250px;
    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-status {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    z-index: 2;
}

.project-status.completed {
    background: var(--success-color);
    color: var(--white-color);
}

.project-status.ongoing {
    background: var(--warning-color);
    color: var(--dark-color);
}

.project-category {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary-color);
    color: var(--white-color);
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 37, 47, 0.3);
    opacity: 0;
    transition: var(--transition);
}

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

.project-hover-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 37, 47, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.project-actions {
    display: flex;
    gap: 1rem;
    transform: translateY(20px);
    transition: var(--transition);
}

.project-card:hover .project-actions {
    transform: translateY(0);
}

.project-content {
    padding: 2rem;
}

.project-header {
    margin-bottom: 1rem;
}

.project-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.project-location {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.project-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--light-color);
}

.project-value,
.project-duration,
.project-type {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.project-value i,
.project-duration i,
.project-type i {
    color: var(--primary-color);
}

.value-amount {
    font-weight: 700;
    color: var(--dark-color);
}

.project-description {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background: var(--light-color);
    color: var(--text-dark);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* ===== SECTION BACKGROUNDS ===== */
.recently-completed {
    padding: 6rem 0;
    background: var(--white-color);
}

.project-experience {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

/* ===== MODAL STYLES ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.modal-content {
    background: var(--white-color);
    border-radius: 15px;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    margin: 2rem;
    position: relative;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 2rem 1rem;
    border-bottom: 1px solid var(--light-color);
}

.modal-header h2 {
    margin: 0;
    color: var(--dark-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--primary-color);
}

.modal-body {
    padding: 2rem;
}

.modal-project-details {
    color: var(--text-dark);
}

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

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 1rem;
    background: var(--light-color);
    border-radius: 8px;
}

.meta-item i {
    color: var(--primary-color);
}

.modal-project-content h3 {
    color: var(--dark-color);
    margin: 2rem 0 1rem;
}

.modal-project-content ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.modal-project-content ul li {
    margin: 0.5rem 0;
    color: var(--text-light);
}

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

.spec-group {
    padding: 1rem;
    background: var(--light-color);
    border-radius: 8px;
}

.spec-group h4 {
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.spec-group p {
    color: var(--text-light);
    margin: 0;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--dark-color);
    color: var(--white-color);
    padding: 2rem 0;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .nav-menu,
    .nav-contact {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--dark-color);
        padding: 2rem;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2.5rem;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

    .filter-tabs {
        flex-direction: column;
        align-items: center;
    }

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

    .featured-projects {
        grid-template-columns: 1fr;
    }

    .slider-slide {
        flex-direction: column;
    }

    .slide-image {
        min-height: 250px;
    }

    .slider-btn {
        display: none;
    }

    .project-meta {
        grid-template-columns: 1fr;
    }

    .tech-specs {
        grid-template-columns: 1fr;
    }

    .slide-info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .page-title {
        font-size: 2rem;
    }

    .project-content {
        padding: 1.5rem;
    }

    .modal-content {
        margin: 1rem;
    }

    .modal-header,
    .modal-body {
        padding: 1.5rem;
    }
}

/* ===== ANIMATION CLASSES ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ===== UTILITY CLASSES ===== */
.hidden {
    display: none !important;
}

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

.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* ===== FOOTER ===== */
.footer {
    background: var(--darker-color);
    color: var(--white-color);
    padding: 4rem 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 1.5rem;
}

.footer-logo .logo-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.footer-logo h3 {
    font-size: 1.5rem;
    color: var(--white-color);
    margin: 0;
}

.footer-section p {
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.footer-contact-quick {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.quick-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,0.7);
}

.quick-contact-item i {
    color: var(--primary-color);
    width: 16px;
}

.footer-section h4 {
    color: var(--white-color);
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

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

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.footer-contact .contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 1.5rem;
    color: rgba(255,255,255,0.7);
}

.footer-contact .contact-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-top: 3px;
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 2rem 0;
}

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

.footer-bottom p {
    color: rgba(255,255,255,0.6);
    margin: 0;
}

.footer-tagline {
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== SCROLL TO TOP ===== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border: none;
    border-radius: 50%;
    color: var(--white-color);
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    box-shadow: var(--shadow-medium);
}

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

.scroll-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
}
/* ===== ONGOING PROJECTS SLIDER ===== */
.ongoing-projects {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--secondary-color) 100%);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.ongoing-projects::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,107,53,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    z-index: 1;
}

.ongoing-projects .container {
    position: relative;
    z-index: 2;
}

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

/* Project Slider Container */
.project-slider-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.slider-wrapper {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.slider-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
    width: 500%; /* 5 slide groups × 100% */
}

.slider-slide-group {
    width: 20%; /* 100% ÷ 5 groups = 20% each */
    flex-shrink: 0;
    padding: 0 10px;
}

/* Image Grid Layout */
.image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 20px;
    height: 500px;
}

.grid-image {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    background: var(--light-color);
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
}

.grid-image:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.grid-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.grid-image:hover img {
    transform: scale(1.05);
}

/* Image Overlay */
.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.3) 50%,
        rgba(0, 0, 0, 0.8) 100%
    );
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: var(--transition);
}

.grid-image:hover .image-overlay {
    opacity: 1;
}

.image-info {
    color: var(--white-color);
    width: 100%;
}

.image-info h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 5px;
    line-height: 1.2;
}

.image-info p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 15px;
}

/* Progress Bar */
.progress-small {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
    transition: width 1s ease-in-out;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Slider Navigation Buttons */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
    box-shadow: var(--shadow-medium);
}

.slider-btn:hover {
    background: var(--white-color);
    transform: translateY(-50%) scale(1.1);
    box-shadow: var(--shadow-heavy);
}

.slider-btn i {
    font-size: 1.2rem;
    color: var(--dark-color);
}

.prev-btn {
    left: -25px;
}

.next-btn {
    right: -25px;
}

/* Slider Dots */
.slider-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active,
.dot:hover {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* Project Summary */
.project-summary {
    margin-top: 4rem;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.summary-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    color: var(--white-color);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

/* Image Placeholder Fallback */
.image-placeholder-fallback {
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #f0f0f0, #e0e0e0);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
}

.placeholder-content {
    text-align: center;
    color: #999;
}

.placeholder-content i {
    font-size: 2rem;
    display: block;
    margin-bottom: 10px;
}

.placeholder-content span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .prev-btn {
        left: 10px;
    }

    .next-btn {
        right: 10px;
    }

    .slider-btn {
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 768px) {
    .ongoing-projects {
        padding: 4rem 0;
    }

    .image-grid {
        height: 400px;
        gap: 15px;
    }

    .slider-wrapper {
        padding: 15px;
        border-radius: 15px;
    }

    .image-info h4 {
        font-size: 1rem;
    }

    .image-info p {
        font-size: 0.8rem;
    }

    .summary-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

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

    .slider-btn {
        width: 40px;
        height: 40px;
    }

    .prev-btn {
        left: 5px;
    }

    .next-btn {
        right: 5px;
    }
}

@media (max-width: 480px) {
    .image-grid {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(4, 1fr);
        height: 600px;
    }

    .slider-slide-group {
        padding: 0 5px;
    }

    .summary-stats {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2.5rem;
    }
}

/* Animation for slide entrance */
.slider-slide-group {
    animation: slideIn 0.6s ease-out;
}

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