/* ==========================================================================
   CSS Variables & Tokens
   ========================================================================== */
   :root {
    /* Colors */
    --primary: #0056b3;
    --primary-light: #3385ff;
    --primary-dark: #003d82;
    --secondary: #00b4d8;
    --accent: #ffb703;
    
    --bg-color: #f8fafc;
    --bg-light: #ffffff;
    --bg-dark: #0f172a;
    
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-light: #f1f5f9;
    
    --border-color: #e2e8f0;
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--text-main);
    background-color: var(--bg-color);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-main);
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 6rem 0;
}

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

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

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

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

.text-white h2, .text-white p, .text-white h3, .text-white h4 {
    color: var(--text-light);
}

/* ==========================================================================
   Typography & Utilities
   ========================================================================== */
.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.title-underline {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
    margin-bottom: 2rem;
}

.title-underline.light {
    background: linear-gradient(90deg, var(--accent), var(--secondary));
}

.highlight {
    color: var(--secondary);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    text-align: center;
    border: 2px solid transparent;
    transition: var(--transition-normal);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 86, 179, 0.4);
}

.btn-outline {
    background: transparent;
    color: white;
    border-color: white;
}

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

.btn-block {
    display: block;
    width: 100%;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition-normal);
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.header.scrolled {
    padding: 0.8rem 0;
}

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

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

.logo-img {
    height: 40px;
    width: auto;
    transition: var(--transition-normal);
}

.logo span {
    color: var(--secondary);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-main);
    font-weight: 500;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary);
    transition: var(--transition-normal);
}

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

.hamburger {
    display: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
}

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

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-bg .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 100%);
}

.hero-content {
    color: white;
    max-width: 800px;
}

.hero-content h1 {
    font-size: 4rem;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.about-features {
    margin-top: 2rem;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.about-features i {
    color: var(--secondary);
    font-size: 1.25rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.stat-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    border-bottom: 4px solid var(--primary);
    transition: var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-card p {
    color: var(--text-muted);
    font-weight: 500;
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-slow);
    position: relative;
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-image {
    height: 200px;
    overflow: hidden;
}

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

.service-image.dual-image {
    display: flex;
}

.service-image.dual-image img {
    width: 50%;
}

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

.service-content {
    padding: 2rem;
    position: relative;
}

.icon-box {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    position: absolute;
    top: -30px;
    right: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.service-card:hover .icon-box {
    transform: rotate(10deg) scale(1.1);
}

.service-content h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.service-content p {
    color: var(--text-muted);
}

/* ==========================================================================
   Clients Marquee Section
   ========================================================================== */
.marquee-container {
    overflow: hidden;
    width: 100%;
    background: var(--bg-light);
    padding: 2rem 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.marquee-content {
    display: flex;
    width: max-content;
    animation: scroll 20s linear infinite;
}

.marquee-content:hover {
    animation-play-state: paused;
}

.client-logo {
    padding: 0 3rem;
    display: flex;
    align-items: center;
    cursor: default;
}

.client-logo span {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    color: #cbd5e1;
    transition: var(--transition-normal);
}

.client-logo:hover span {
    color: var(--primary);
    transform: scale(1.1);
}

.client-logo img {
    height: 40px;
    width: auto;
    max-width: 150px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition-normal);
}

.client-logo:hover img {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.1);
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info p {
    color: #94a3b8;
    margin-bottom: 3rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.2rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--secondary);
}

.contact-details h4 {
    margin-bottom: 0.25rem;
}

.contact-details p {
    color: #cbd5e1;
    margin-bottom: 0;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    padding: 3rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-control {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: white;
    font-family: var(--font-primary);
    transition: var(--transition-normal);
}

.form-control::placeholder {
    color: #94a3b8;
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary);
    background: rgba(255, 255, 255, 0.15);
}

textarea.form-control {
    resize: vertical;
}

.checkbox-group {
    margin-bottom: 1.5rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: #cbd5e1;
    font-size: 0.9rem;
    cursor: pointer;
    line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 0.2rem;
    width: 1.125rem;
    height: 1.125rem;
    cursor: pointer;
    accent-color: var(--secondary);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background: #020617;
    color: #64748b;
    padding: 2rem 0;
    text-align: center;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links a {
    margin-left: 1.5rem;
}

.footer-links a:hover {
    color: var(--secondary);
}

/* ==========================================================================
   Animations
   ========================================================================== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 992px) {
    .hero-content h1 { font-size: 3rem; }
    .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .about-text { order: 2; }
    .about-stats { order: 1; margin-bottom: 2rem; }
}

@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-light);
        flex-direction: column;
        gap: 0;
        box-shadow: var(--shadow-md);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path 0.4s ease-in-out;
    }
    
    .nav-links.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }
    
    .nav-link {
        color: var(--text-main);
        padding: 1.5rem 2rem;
        border-bottom: 1px solid var(--border-color);
        display: block;
    }
    
    .hamburger { display: block; }
    .header.scrolled .hamburger { color: var(--text-main); }
    
    .hero-content h1 { font-size: 2.5rem; }
    .hero-buttons { flex-direction: column; }
    .section-padding { padding: 4rem 0; }
    
    .footer-bottom {
        flex-direction: column;
        justify-content: center;
    }
    
    .footer-links a {
        margin: 0 0.75rem;
    }
}