/* ===================================
   CREATIVE INFRA - Construction Company
   Professional CSS Styles
   =================================== */

/* ===================================
   ROOT VARIABLES & RESET
   =================================== */
:root {
    /* Professional Construction Colors - Inspired by modern construction sites */
    --primary-blue: #003B5C;
    --secondary-blue: #0066A1;
    --accent-orange: #FF6B35;
    --dark-gray: #2C3E50;
    --medium-gray: #34495E;
    --light-gray: #ECF0F1;
    --white: #FFFFFF;
    --text-gray: #4A5568;
    --success-green: #27AE60;
    --border-color: #DFE6E9;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-width: 1200px;
    
    /* Transitions */
    --transition-smooth: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.7;
    color: var(--text-gray);
    overflow-x: hidden;
    background: var(--white);
}

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

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

ul {
    list-style: none;
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 15px 35px;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition-smooth);
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: var(--accent-orange);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(255, 107, 53, 0.3);
}

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

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.section-label {
    display: inline-block;
    color: var(--secondary-blue);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 13px;
    margin-bottom: 15px;
    position: relative;
    padding: 0 20px;
}

.section-label::before,
.section-label::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--secondary-blue));
}

.section-label::before {
    left: -35px;
}

.section-label::after {
    right: -35px;
    background: linear-gradient(90deg, var(--secondary-blue), transparent);
}

.section-header h2 {
    font-size: 42px;
    font-weight: 800;
    color: var(--dark-gray);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-orange);
    border-radius: 2px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ===================================
   HEADER & NAVIGATION
   =================================== */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo h1 {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary-blue);
    letter-spacing: 1px;
}

.logo .tagline {
    font-size: 12px;
    color: var(--secondary-blue);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    gap: 35px;
    align-items: center;
}

.nav-menu a {
    font-weight: 500;
    color: var(--dark-gray);
    transition: all 0.3s ease;
    font-size: 15px;
    position: relative;
}

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

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

.nav-menu a:hover {
    color: var(--secondary-blue);
    transform: translateY(-2px);
}

.nav-menu .btn-contact {
    padding: 12px 28px;
    background: var(--accent-orange);
    color: var(--white);
    border-radius: 5px;
    transition: all 0.4s ease;
    font-weight: 600;
}

.nav-menu .btn-contact:hover {
    background: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 59, 92, 0.25);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 30px;
    height: 3px;
    background: var(--dark-gray);
    transition: var(--transition-smooth);
}

/* ===================================
   HERO SECTION
   =================================== */
#hero {
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.03)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,165.3C1248,171,1344,149,1392,138.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.7;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 0 20px;
}

.hero-subtitle {
    color: var(--accent-orange);
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 25px;
    animation: fadeInUp 1s ease forwards;
}

.hero-title span {
    color: var(--accent-orange);
    display: block;
    margin-top: 10px;
}

.hero-description {
    font-size: 19px;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--white);
    z-index: 2;
}

.hero-scroll span {
    display: block;
    font-size: 14px;
    margin-bottom: 10px;
}

.scroll-arrow {
    width: 30px;
    height: 50px;
    border: 2px solid var(--white);
    border-radius: 20px;
    margin: 0 auto;
    position: relative;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: var(--white);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { top: 10px; opacity: 1; }
    50% { top: 25px; opacity: 0.5; }
    100% { top: 10px; opacity: 1; }
}

/* ===================================
   ABOUT US SECTION
   =================================== */
#about {
    padding: var(--section-padding);
    background: var(--light-gray);
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-text {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.about-text h3 {
    color: var(--primary-blue);
    font-size: 24px;
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 700;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    color: var(--text-gray);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.values-list {
    list-style: none;
    margin-top: 20px;
}

.values-list li {
    padding: 12px 15px;
    margin-bottom: 12px;
    background: rgba(255, 107, 53, 0.05);
    border-left: 4px solid var(--accent-orange);
    border-radius: 5px;
}

.values-list li strong {
    color: var(--primary-blue);
    font-size: 16px;
}

/* ===================================
   SERVICES SECTION
   =================================== */
#services {
    padding: var(--section-padding);
    background: var(--white);
    position: relative;
    overflow: hidden;
}

#services::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 102, 161, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

#services::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 107, 53, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}

.service-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-orange);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
    border-color: var(--secondary-blue);
}

.service-icon {
    font-size: 55px;
    margin-bottom: 20px;
    transition: all 0.4s ease;
    display: inline-block;
}

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

.service-card h3 {
    font-size: 24px;
    color: var(--primary-blue);
    margin-bottom: 15px;
    font-weight: 700;
}

.service-card > p {
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.8;
}

.service-features {
    margin-top: 20px;
    padding-left: 0;
}

.service-features li {
    padding: 8px 0;
    color: var(--text-gray);
    position: relative;
    padding-left: 25px;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-green);
    font-weight: bold;
}

/* ===================================
   GALLERY SECTION
   =================================== */
#gallery {
    padding: var(--section-padding);
    background: var(--light-gray);
    position: relative;
    overflow: hidden;
}

#gallery::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -50px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 102, 161, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    cursor: pointer;
    background: var(--white);
}

.gallery-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.gallery-image {
    position: relative;
    overflow: hidden;
    height: 300px;
    background: var(--light-gray);
}

.gallery-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.6s ease;
}

.gallery-item:hover .gallery-image img {
    transform: scale(1.08);
}

.gallery-info {
    padding: 25px;
    background: var(--white);
}

.gallery-info h3 {
    font-size: 20px;
    color: var(--primary-blue);
    margin-bottom: 10px;
    font-weight: 700;
}

.gallery-info p {
    color: var(--text-gray);
    margin-bottom: 15px;
}

.project-category {
    display: inline-block;
    background: var(--accent-orange);
    color: var(--white);
    padding: 8px 18px;
    border-radius: 5px;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.gallery-item:hover .project-category {
    background: var(--secondary-blue);
    transform: translateY(-3px);
}

/* ===================================
   CONTACT SECTION
   =================================== */
#contact {
    padding: var(--section-padding);
    background: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

.contact-info h3 {
    font-size: 28px;
    color: var(--primary-blue);
    margin-bottom: 30px;
    font-weight: 700;
}

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

.contact-icon {
    font-size: 30px;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 18px;
    color: var(--primary-blue);
    margin-bottom: 8px;
    font-weight: 700;
}

.contact-item p {
    color: var(--text-gray);
    line-height: 1.6;
}

.contact-form-wrapper {
    background: var(--white);
    padding: 45px;
    border-radius: 10px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
}

.contact-form-wrapper:hover {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-family: var(--font-primary);
    font-size: 15px;
    transition: all 0.4s ease;
    background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-blue);
    box-shadow: 0 5px 15px rgba(0, 102, 161, 0.1);
    transform: translateY(-2px);
}

.contact-form button {
    grid-column: 1 / -1;
    width: 100%;
    margin-top: 10px;
}

.form-message {
    grid-column: 1 / -1;
    text-align: center;
    margin-top: 15px;
    padding: 15px;
    border-radius: 5px;
    display: none;
}

.form-message.success {
    display: block;
    background: #d4edda;
    color: #155724;
}

.form-message.error {
    display: block;
    background: #f8d7da;
    color: #721c24;
}

/* ===================================
   FOOTER
   =================================== */
#footer {
    background: var(--dark-gray);
    color: var(--white);
    padding: 60px 0 20px;
}

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

.footer-section h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--white);
    font-weight: 700;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--white);
    font-weight: 600;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-smooth);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 1024px) {
    .hero-title {
        font-size: 48px;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .timeline-container::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: row !important;
    }
    
    .timeline-content {
        width: calc(100% - 60px);
        margin-left: 60px !important;
        margin-right: 0 !important;
    }
    
    .timeline-marker {
        left: 20px !important;
        transform: translateX(0) !important;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        padding: 40px;
        transition: var(--transition-smooth);
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .section-header h2 {
        font-size: 32px;
    }
    
    .services-grid,
    .gallery-grid,
    .process-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 40px;
    }
    
    .testimonial-content {
        padding: 30px 25px;
    }
    
    .testimonial-text {
        font-size: 16px;
    }
    
    .partner-item {
        font-size: 20px;
        padding: 15px 30px;
    }
    
    .contact-form {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 22px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 14px;
    }
    
    .section-header h2 {
        font-size: 26px;
    }
    
    .service-card,
    .process-step {
        padding: 30px 20px;
    }
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Add smooth scroll reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 768px) {
    .about-text {
        padding: 30px 20px;
    }
    
    .about-text h3 {
        font-size: 20px;
    }
}