/*
Theme Name: VadServ Landing
Theme URI: https://vadserv.com
Description: Professional landing page for VadServ - AI, ML, Data Science & Cloud Services
Version: 1.0
Author: VadServ Team
*/

:root {
    --primary-color: #0066cc;
    --secondary-color: #00a8e8;
    --dark-color: #1a1a2e;
    --light-color: #f8f9fa;
    --accent-color: #ff6b35;
    --text-color: #333;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

/* Header Styles */
.site-header {
    background: linear-gradient(135deg, var(--dark-color) 0%, #16213e 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    border-bottom: 2px solid rgba(0, 168, 232, 0.3);
}

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

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

.logo {
    font-size: 2rem;
    font-weight: bold;
    background: linear-gradient(45deg, var(--secondary-color), #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-menu a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

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

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    padding: 120px 20px 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    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 1200 600"><defs><linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:%2300a8e8;stop-opacity:0.1" /><stop offset="100%" style="stop-color:%2300ff88;stop-opacity:0.1" /></linearGradient></defs><circle cx="100" cy="100" r="80" fill="url(%23grad)"/><circle cx="900" cy="400" r="120" fill="url(%23grad)"/><circle cx="600" cy="150" r="60" fill="url(%23grad)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero-section .tagline {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--secondary-color);
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
    animation: fadeInUp 1s ease 0.6s backwards;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 168, 232, 0.4);
}

/* Services Section */
.services-section {
    padding: 80px 20px;
    background: var(--light-color);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-card p {
    color: #666;
    line-height: 1.8;
}

/* Technology Stack Section */
.tech-stack-section {
    padding: 80px 20px;
    background: white;
}

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

.tech-item {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s;
}

.tech-item:hover {
    border-color: var(--secondary-color);
    transform: scale(1.05);
}

.tech-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

/* Why Choose Us Section */
.why-choose-section {
    padding: 80px 20px;
    background: linear-gradient(135deg, var(--dark-color) 0%, #16213e 100%);
    color: white;
}

.why-choose-section .section-title {
    color: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.feature-item h3 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

/* Contact Section */
.contact-section {
    padding: 80px 20px;
    background: var(--light-color);
    text-align: center;
}

.contact-info {
    margin-top: 2rem;
    font-size: 1.2rem;
}

.contact-info a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

/* Clients Section */
.clients-section {
    padding: 80px 20px;
    background: white;
    overflow: hidden;
}

.clients-scroll-wrapper {
    margin-top: 3rem;
    overflow: hidden;
    position: relative;
}

.clients-scroll {
    display: flex;
    gap: 1.5rem;
    animation: scroll 15s linear infinite;
}

.clients-scroll:hover {
    animation-play-state: paused;
}

.client-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1rem;
    transition: transform 0.3s, opacity 0.3s;
    opacity: 0.6;
    min-width: 160px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    border: 2px solid #e0e0e0;
}

.client-logo:hover {
    transform: scale(1.05);
    opacity: 1;
    border-color: var(--secondary-color);
}

.client-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: #0066cc;
    text-align: center;
    white-space: nowrap;
    line-height: 1.4;
}

.client-logo img {
    max-width: 100%;
    height: auto;
    filter: grayscale(100%);
    transition: filter 0.3s;
}

.client-logo:hover img {
    filter: grayscale(0%);
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-100% / 2));
    }
}

/* Footer */
.site-footer {
    background: var(--dark-color);
    color: white;
    padding: 2rem 20px;
    text-align: center;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .hero-section .tagline {
        font-size: 1.2rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
}