/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
    --primary-yellow: #FFB800;
    --yellow-light: #FFD54F;
    --yellow-dark: #F57C00;
    --white: #FFFFFF;
    --gray-light: #F5F5F5;
    --gray-medium: #E0E0E0;
    --gray-dark: #757575;
    --text-dark: #212121;
    --text-light: #616161;
    --black: #000000;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.15);
    --shadow-dark: rgba(0, 0, 0, 0.2);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

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

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

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 4px 20px var(--shadow-medium);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    height: 50px;
    width: auto;
}


.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    color: var(--text-dark);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    position: relative;
    transition: var(--transition);
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 3px;
    background-color: var(--primary-yellow);
}

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    transition: var(--transition);
}

/* ============================================
   Sticky Social Media Buttons
   ============================================ */
.sticky-social {
    position: fixed;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem 0.5rem;
    background-color: rgba(255, 255, 255, 0.9);
    border-top-right-radius: 25px;
    border-bottom-right-radius: 25px;
    box-shadow: 2px 0 10px var(--shadow);
    transition: var(--transition);
}

.sticky-social:hover {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 2px 0 15px var(--shadow-medium);
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: transparent;
    color: var(--text-dark);
    transition: var(--transition);
    border: 2px solid var(--gray-medium);
}

.social-btn:hover {
    background-color: var(--primary-yellow);
    color: var(--text-dark);
    border-color: var(--primary-yellow);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(255, 184, 0, 0.4);
}

.social-btn svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   Scroll to Top Button
   ============================================ */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-yellow);
    color: var(--text-dark);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    box-shadow: 0 4px 15px rgba(255, 184, 0, 0.4);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.scroll-to-top.show {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background-color: var(--yellow-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 184, 0, 0.5);
}

.scroll-to-top svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-light) 100%);
    margin-top: 80px;
    overflow: hidden;
}

/* Civil Engineering Background Pattern */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 50px, rgba(255, 184, 0, 0.03) 50px, rgba(255, 184, 0, 0.03) 100px),
        repeating-linear-gradient(90deg, transparent, transparent 50px, rgba(255, 184, 0, 0.03) 50px, rgba(255, 184, 0, 0.03) 100px);
    z-index: 1;
}

/* Hero Animations Container */
.hero-animations {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

/* ============================================
   Survey Equipment Animations
   ============================================ */
.animation-item {
    position: absolute;
    opacity: 0.2;
    filter: drop-shadow(0 2px 8px rgba(255, 184, 0, 0.3));
    animation: floatEquipment 20s infinite ease-in-out;
}

/* Drone Animation */
.drone {
    top: 10%;
    left: 8%;
    animation: droneFly 15s infinite ease-in-out;
}

@keyframes droneFly {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(40px, -30px) rotate(5deg);
    }
    50% {
        transform: translate(20px, -60px) rotate(-5deg);
    }
    75% {
        transform: translate(-10px, -40px) rotate(3deg);
    }
}

/* DGPS Animation */
.dgps {
    top: 65%;
    right: 10%;
    animation: dgpsFloat 18s infinite ease-in-out;
}

@keyframes dgpsFloat {
    0%, 100% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(-25px, -20px);
    }
    50% {
        transform: translate(-15px, -35px);
    }
    75% {
        transform: translate(-20px, -15px);
    }
}

/* Survey Tripod Animation */
.survey-tripod {
    bottom: 20%;
    left: 12%;
    animation: tripodFloat 22s infinite ease-in-out;
}

@keyframes tripodFloat {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(15px, -25px) rotate(2deg);
    }
    66% {
        transform: translate(-10px, -15px) rotate(-2deg);
    }
}

/* Total Station Animation */
.total-station {
    top: 35%;
    right: 15%;
    animation: stationFloat 17s infinite ease-in-out;
}

@keyframes stationFloat {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(-20px, 15px) rotate(-3deg);
    }
    50% {
        transform: translate(-30px, -10px) rotate(3deg);
    }
    75% {
        transform: translate(-15px, 10px) rotate(-1deg);
    }
}

/* Theodolite Animation */
.theodolite {
    top: 50%;
    left: 5%;
    animation: theodoliteFloat 19s infinite ease-in-out;
}

@keyframes theodoliteFloat {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(25px, -20px) rotate(8deg);
    }
    66% {
        transform: translate(10px, -35px) rotate(-5deg);
    }
}

/* Leveling Rod Animation */
.leveling-rod {
    bottom: 30%;
    right: 8%;
    animation: rodFloat 16s infinite ease-in-out;
}

@keyframes rodFloat {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(-15px, -40px) rotate(2deg);
    }
}

/* Measuring Wheel Animation */
.measuring-wheel {
    top: 75%;
    left: 20%;
    animation: wheelRoll 14s infinite ease-in-out;
}

@keyframes wheelRoll {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(30px, -15px) rotate(90deg);
    }
    50% {
        transform: translate(20px, -30px) rotate(180deg);
    }
    75% {
        transform: translate(10px, -20px) rotate(270deg);
    }
}

@keyframes floatEquipment {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(10px, -20px);
    }
}


.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 100px,
        rgba(255, 184, 0, 0.02) 100px,
        rgba(255, 184, 0, 0.02) 200px
    );
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 800px;
    padding: 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.btn {
    padding: 1rem 2.5rem;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-yellow);
    color: var(--text-dark);
    box-shadow: 0 4px 15px rgba(255, 184, 0, 0.3);
}

.btn-primary:hover {
    background-color: var(--yellow-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 184, 0, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-dark);
    border: 2px solid var(--primary-yellow);
}

.btn-secondary:hover {
    background-color: var(--primary-yellow);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary-yellow);
    border-radius: 25px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background-color: var(--primary-yellow);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% {
        opacity: 0;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) translateY(20px);
    }
}

/* ============================================
   Section Styles
   ============================================ */
section {
    padding: 5rem 0;
}

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

.section-title {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.title-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, transparent, var(--primary-yellow), transparent);
    margin: 0 auto 1.5rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   About Section
   ============================================ */
.about {
    background-color: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    color: var(--primary-yellow);
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.about-intro {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--gray-light);
    border-radius: 10px;
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px var(--shadow);
}

.stat-number {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-yellow);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
}

.about-image {
    position: relative;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background-color: var(--gray-light);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px var(--shadow);
    overflow: hidden;
}

.about-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}

.placeholder-content {
    text-align: center;
    color: var(--text-light);
}

.placeholder-content p {
    margin-top: 1rem;
}

/* ============================================
   Services Section
   ============================================ */
.services {
    background: linear-gradient(to bottom, var(--white) 0%, var(--gray-light) 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary-yellow);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px var(--shadow-medium);
}

.service-icon {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.service-card h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ============================================
   Projects Section
   ============================================ */
.projects {
    background-color: var(--white);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px var(--shadow);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px var(--shadow-medium);
}

.project-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    background-color: var(--gray-light);
}

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

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

.project-image .image-placeholder {
    height: 100%;
    border-radius: 0;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
}

.project-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.project-category {
    display: inline-block;
    padding: 0.4rem 1rem;
    background-color: var(--primary-yellow);
    color: var(--text-dark);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: linear-gradient(to bottom, var(--gray-light) 0%, var(--white) 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background-color: var(--primary-yellow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-details h3 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.contact-details p {
    color: var(--text-light);
    line-height: 1.8;
}

.contact-details a {
    color: var(--primary-yellow);
}

.contact-details a:hover {
    text-decoration: underline;
}

.contact-form-container {
    background-color: var(--white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px var(--shadow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.form-group input,
.form-group textarea {
    padding: 1rem;
    border: 2px solid var(--gray-medium);
    border-radius: 5px;
    font-family: 'Roboto', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-yellow);
    box-shadow: 0 0 0 3px rgba(255, 184, 0, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--text-dark);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1rem;
}

.footer-logo-img {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
}


.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.footer-section h4 {
    color: var(--primary-yellow);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

/* Social Media Icons */
.social-media {
    margin-top: 1.5rem;
}

.social-media h4 {
    margin-bottom: 1rem;
    color: var(--primary-yellow);
    font-size: 1.1rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    border: 2px solid rgba(255, 184, 0, 0.3);
}

.social-icons a:hover {
    background-color: var(--primary-yellow);
    color: var(--text-dark);
    border-color: var(--primary-yellow);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 184, 0, 0.4);
}

.social-icons a svg {
    width: 20px;
    height: 20px;
}

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

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-yellow);
    padding-left: 5px;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

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

.fade-in {
    animation: fadeInUp 0.8s ease forwards;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 968px) {
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

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

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

    .hero-subtitle {
        font-size: 1.1rem;
    }

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

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 5px 20px var(--shadow);
        transition: var(--transition);
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: 1rem;
        border-bottom: 1px solid var(--gray-medium);
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

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

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

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

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

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 1.2rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .contact-form-container {
        padding: 1.5rem;
    }
}
}