:root {
    --bg-main: #ffffff;
    --bg-alt: #f8fafc;
    --bg-glass: rgba(255, 255, 255, 0.85);
    --bg-glass-hover: rgba(255, 255, 255, 1);
    --border-glass: rgba(0, 0, 0, 0.08);
    --text-main: #0f172a;
    --text-muted: #475569;
    --accent-cyan: #0284c7; /* Deep sky blue for light theme */
    --accent-purple: #4f46e5; /* Indigo */
    --gradient-primary: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-main);
}

body {
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-alt);
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-cyan);
}

/* Preloader */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-main);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

#preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 200px;
    height: 60px;
    position: relative;
    z-index: 1;
}

.loader-circle {
    width: 20px;
    height: 20px;
    position: absolute;
    border-radius: 50%;
    background-color: var(--accent-cyan);
    left: 15%;
    transform-origin: 50%;
    animation: loader-circle 0.5s alternate infinite ease;
}

.loader-circle:nth-child(2) {
    left: 45%;
    animation-delay: 0.2s;
    background-color: var(--accent-purple);
}

.loader-circle:nth-child(3) {
    left: auto;
    right: 15%;
    animation-delay: 0.3s;
}

.loader-shadow {
    width: 20px;
    height: 4px;
    border-radius: 50%;
    background-color: rgba(0,0,0,0.1);
    position: absolute;
    top: 62px;
    transform-origin: 50%;
    z-index: -1;
    left: 15%;
    filter: blur(1px);
    animation: loader-shadow 0.5s alternate infinite ease;
}

.loader-shadow:nth-child(5) {
    left: 45%;
    animation-delay: 0.2s;
}

.loader-shadow:nth-child(6) {
    left: auto;
    right: 15%;
    animation-delay: 0.3s;
}

.loader span {
    position: absolute;
    top: 75px;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    letter-spacing: 2px;
    font-weight: 800;
    color: var(--text-main);
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}

@keyframes loader-circle {
    0% {
        top: 60px;
        height: 5px;
        border-radius: 50px 50px 25px 25px;
        transform: scaleX(1.7);
    }
    40% {
        height: 20px;
        border-radius: 50%;
        transform: scaleX(1);
    }
    100% {
        top: 0%;
    }
}

@keyframes loader-shadow {
    0% {
        transform: scaleX(1.5);
    }
    40% {
        transform: scaleX(1);
        opacity: .7;
    }
    100% {
        transform: scaleX(.2);
        opacity: .4;
    }
}

/* Utilities */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

.section-padding {
    padding: 120px 0;
}

.bg-alt {
    background-color: var(--bg-alt);
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 800;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 4rem;
    max-width: 600px;
    line-height: 1.6;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    transition: all 0.3s ease;
}

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

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    color: var(--text-main);
}

.logo {
    height: 40px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-size: 0.95rem;
    font-weight: 600;
    transition: color 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links a:hover {
    color: var(--accent-cyan);
}

.cta-button {
    background: var(--gradient-primary);
    color: white;
    padding: 10px 24px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(2, 132, 199, 0.2);
}

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

.hero-video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translateX(-50%) translateY(-50%);
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.hero-video.active {
    opacity: 0.85; /* Make video very visible */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.1); /* Extreme transparency so video is fully visible */
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 50px 30px;
    background: rgba(255, 255, 255, 0.35); /* highly transparent glass */
    backdrop-filter: blur(8px);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(2, 132, 199, 0.1);
    border: 1px solid rgba(2, 132, 199, 0.2);
    border-radius: 50px;
    color: var(--accent-cyan);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 20px;
    backdrop-filter: blur(5px);
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    line-height: 1.1;
    margin-bottom: 24px;
    color: #0f172a;
}

.hero-desc {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-muted);
    margin-bottom: 40px;
    line-height: 1.6;
    font-weight: 500;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-main);
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.7;
    animation: bounce 2s infinite;
}

.hero-scroll-indicator .mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--text-main);
    border-radius: 12px;
    position: relative;
}

.hero-scroll-indicator .wheel {
    width: 4px;
    height: 8px;
    background: var(--text-main);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

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

@keyframes scroll {
    0% { transform: translateX(-50%) translateY(0); opacity: 1; }
    100% { transform: translateX(-50%) translateY(10px); opacity: 0; }
}

/* Banner Video Section */
.video-banner {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
    color: white;
}

.video-banner .hero-video {
    opacity: 1;
}

.video-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.7);
    z-index: 1;
}

.video-banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.video-banner-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: white;
}

.video-banner-desc {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s ease;
    position: relative;
    box-shadow: var(--box-shadow);
}

.service-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--border-glass);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    z-index: 2;
}

.service-card:hover {
    background: var(--bg-glass-hover);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

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

.service-content {
    padding: 30px;
}

.service-icon {
    font-size: 2rem;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.service-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

.service-list {
    list-style: none;
}

.service-list li {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.service-list li i {
    color: var(--accent-cyan);
    font-size: 0.8rem;
    margin-top: 4px;
}

/* Projects Section */
.projects-filter {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--border-glass);
    color: var(--text-main);
    padding: 8px 20px;
    border-radius: 30px;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn:hover, .filter-btn.active {
    background: var(--accent-cyan);
    border-color: var(--accent-cyan);
    color: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    box-shadow: var(--box-shadow);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    border-color: rgba(2, 132, 199, 0.3);
}

.project-img-container {
    height: 220px;
    position: relative;
    overflow: hidden;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.project-location {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(4px);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--border-glass);
    color: var(--text-main);
}

.project-content {
    padding: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.project-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

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

.project-tag {
    font-size: 0.75rem;
    padding: 4px 10px;
    background: rgba(79, 70, 229, 0.1);
    color: var(--accent-purple);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-tag:nth-child(even) {
    background: rgba(2, 132, 199, 0.1);
    color: var(--accent-cyan);
    border-color: rgba(2, 132, 199, 0.2);
}

/* Contact Footer */
.footer {
    border-top: 1px solid var(--border-glass);
    padding: 80px 0 40px;
    background: var(--bg-alt);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo-container {
    margin-bottom: 20px;
}

.footer-desc {
    color: var(--text-muted);
    line-height: 1.6;
    max-width: 400px;
    margin-bottom: 30px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-main);
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.social-link:hover {
    background: var(--accent-cyan);
    border-color: var(--accent-cyan);
    color: #fff;
    transform: translateY(-3px);
}

.footer-heading {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.contact-list {
    list-style: none;
}

.contact-list li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
}

.contact-list i {
    color: var(--accent-cyan);
}

.contact-list a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-list a:hover {
    color: var(--accent-cyan);
}

.footer-bottom {
    border-top: 1px solid var(--border-glass);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}