/* Core CSS variables & Design System */
:root {
    --bg-dark: #060913;
    --bg-card: #0f1322;
    --primary: #ffffff;
    --secondary: #8e9bb4;
    --accent-purple: #8b5cf6;
    --accent-blue: #3b82f6;
    --accent-indigo: #6366f1;
    --border-color: rgba(255, 255, 255, 0.08);
    --font-outfit: 'Outfit', sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--primary);
    font-family: var(--font-outfit), sans-serif;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

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

/* Header & Navigation */
header.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(6, 9, 19, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: var(--border-color) 1px solid;
    transition: var(--transition-smooth);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.header-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.site-logo img {
    height: 40px;
    display: block;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    gap: 32px;
}

.main-navigation ul li {
    position: relative;
}

.main-navigation ul li a {
    font-size: 16px;
    font-weight: 500;
    color: var(--secondary);
    padding: 28px 0;
    display: block;
}

.main-navigation ul li a:hover,
.main-navigation ul li.active a {
    color: var(--primary);
}

/* Megamenu styling */
.mega-menu:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sub-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--bg-card);
    border: var(--border-color) 1px solid;
    border-radius: 12px;
    width: 600px;
    padding: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.megamenu-title {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-purple);
    margin-bottom: 16px;
}

.megamenu-list {
    display: flex;
    flex-direction: column;
    gap: 12px !important;
}

.megamenu-list li a {
    padding: 0 !important;
    font-size: 15px !important;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-indigo));
    color: #fff;
}

.btn-primary:hover {
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--primary);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary);
}

.header-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary);
    font-weight: 500;
}

.header-phone:hover {
    color: var(--primary);
}

.header-ctas {
    display: flex;
    align-items: center;
    gap: 24px;
}

/* Hamburger icon */
.hamburger-icon {
    display: none;
    cursor: pointer;
    color: var(--primary);
}

/* Hero Section */
.home-banner {
    padding-top: 180px;
    padding-bottom: 100px;
    background: radial-gradient(circle at top right, rgba(139, 92, 246, 0.15), transparent 50%),
                radial-gradient(circle at bottom left, rgba(59, 130, 246, 0.1), transparent 50%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.banner-title {
    font-size: 64px;
    margin-bottom: 24px;
    line-height: 1.1;
    background: linear-gradient(to right, #fff, var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.banner-title span {
    background: linear-gradient(to right, var(--accent-purple), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 20px;
    color: var(--secondary);
    max-width: 700px;
    margin: 0 auto 40px auto;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 80px;
}

/* Featured Clients */
.bottom-meta {
    border-top: var(--border-color) 1px solid;
    padding-top: 40px;
    margin-top: 60px;
}

.featured-clients-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
}

.featured-title {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--secondary);
    margin-bottom: 20px;
    text-align: left;
}

.client-logos {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    align-items: center;
}

.client-logos img {
    height: 32px;
    opacity: 0.6;
    transition: var(--transition-smooth);
    filter: brightness(0) invert(1);
}

.client-logos img:hover {
    opacity: 1;
}

/* Stats Section */
.trusted-partners {
    padding: 80px 0;
    border-top: var(--border-color) 1px solid;
    border-bottom: var(--border-color) 1px solid;
    background: rgba(255, 255, 255, 0.01);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

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

.stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    background: linear-gradient(135deg, #fff, var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 12px;
}

.stat-label {
    color: var(--secondary);
    font-size: 16px;
}

/* Why Us Section */
.software-services {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px auto;
}

.section-header h2 {
    font-size: 40px;
    margin-bottom: 20px;
}

.section-header p {
    font-size: 18px;
    color: var(--secondary);
}

.cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.card {
    background: var(--bg-card);
    border: var(--border-color) 1px solid;
    border-radius: 16px;
    padding: 40px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(800px circle at var(--x, 0px) var(--y, 0px), rgba(255, 255, 255, 0.06), transparent 40%);
    z-index: 1;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
}

.card-header-icon {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.card-icon {
    width: 48px;
    height: 48px;
    background: rgba(139, 92, 246, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-purple);
}

.card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.card p {
    color: var(--secondary);
    font-size: 16px;
}

/* Accordion Expertise Section */
.expertise-section {
    padding: 100px 0;
    background: rgba(255, 255, 255, 0.01);
}

.expertise-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
}

.expertise-accordion {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.accordion-item {
    border: var(--border-color) 1px solid;
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-card);
    transition: var(--transition-smooth);
}

.accordion-header {
    padding: 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 20px;
    font-weight: 700;
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 24px;
}

.accordion-body ul {
    list-style: none;
    padding-bottom: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.accordion-body ul li a {
    color: var(--secondary);
    font-size: 16px;
}

.accordion-body ul li a:hover {
    color: var(--primary);
}

.accordion-item.active {
    border-color: var(--accent-purple);
}

.accordion-item.active .accordion-body {
    max-height: 500px;
}

.accordion-icon {
    transition: var(--transition-smooth);
}

.accordion-item.active .accordion-icon {
    transform: rotate(180px);
}

/* Case Study Slider */
.case-studies {
    padding: 100px 0;
    position: relative;
}

.case-study-slider {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: var(--bg-card);
    border: var(--border-color) 1px solid;
}

.slide-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 500px;
}

.slide-left {
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.slide-tag {
    font-size: 14px;
    color: var(--accent-purple);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.slide-title {
    font-size: 32px;
    margin-bottom: 32px;
}

.slide-blocks {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.slide-block-title {
    font-size: 16px;
    color: var(--secondary);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.slide-right {
    background-size: cover;
    background-position: center;
    position: relative;
}

.slider-controls {
    display: flex;
    gap: 16px;
    margin-top: 32px;
    justify-content: flex-end;
}

.slider-arrow {
    width: 48px;
    height: 48px;
    border: var(--border-color) 1px solid;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.slider-arrow:hover {
    background: var(--primary);
    color: var(--bg-dark);
}

/* Contact & Footer Section */
.footer-contact {
    padding: 100px 0;
    background: radial-gradient(circle at bottom center, rgba(139, 92, 246, 0.1), transparent 70%);
    border-top: var(--border-color) 1px solid;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--secondary);
}

.form-control {
    background: rgba(255, 255, 255, 0.03);
    border: var(--border-color) 1px solid;
    border-radius: 8px;
    padding: 16px;
    color: var(--primary);
    font-family: inherit;
    font-size: 16px;
    transition: var(--transition-smooth);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-purple);
    background: rgba(255, 255, 255, 0.05);
}

/* Footer bottom */
.site-footer {
    padding: 40px 0;
    border-top: var(--border-color) 1px solid;
    text-align: center;
    color: var(--secondary);
    font-size: 14px;
}

/* Mobile sliding menu styles */
.mobile-sliding-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100vh;
    background: var(--bg-card);
    z-index: 2000;
    padding: 40px 24px;
    transition: var(--transition-smooth);
    border-left: var(--border-color) 1px solid;
}

.mobile-sliding-menu.active {
    right: 0;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.mobile-menu-close {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.mobile-menu-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.mobile-menu-list li a {
    font-size: 20px;
    font-weight: 600;
}

/* Responsiveness Settings */
/* Modal Pop-up */
.success-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(6, 9, 19, 0.95);
    backdrop-filter: blur(10px);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.success-modal.active {
    opacity: 1;
    visibility: visible;
}

.success-modal-content {
    background: var(--bg-card);
    border: var(--border-color) 1px solid;
    padding: 40px;
    border-radius: 16px;
    max-width: 480px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.2);
    transform: translateY(20px);
    transition: var(--transition-smooth);
}

.success-modal.active .success-modal-content {
    transform: translateY(0);
}

.success-modal-icon {
    font-size: 48px;
    color: var(--accent-purple);
    margin-bottom: 24px;
}

/* Timeline Layout */
.timeline-section {
    padding: 100px 0;
}

.timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    margin-top: 60px;
}

.timeline-step {
    background: var(--bg-card);
    border: var(--border-color) 1px solid;
    border-radius: 12px;
    padding: 24px;
    position: relative;
}

.timeline-step-num {
    font-size: 14px;
    font-weight: 800;
    color: var(--accent-purple);
    margin-bottom: 12px;
}

/* FAQ Accordion */
.faq-section {
    padding: 100px 0;
}

.faq-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 800px;
    margin: 40px auto 0 auto;
}

/* Tech Marquee */
.marquee-section {
    padding: 60px 0;
    background: rgba(255, 255, 255, 0.01);
    overflow: hidden;
}

.marquee-container {
    display: flex;
    gap: 40px;
    animation: marquee 20s linear infinite;
    white-space: nowrap;
    width: max-content;
}

.marquee-item {
    font-size: 20px;
    font-weight: 700;
    color: var(--secondary);
}

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

/* Testimonial grid */
.testimonials-section {
    padding: 100px 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.testimonial-card {
    background: var(--bg-card);
    border: var(--border-color) 1px solid;
    border-radius: 12px;
    padding: 30px;
}

/* Responsive updates for new structures */
@media (max-width: 992px) {
    .timeline {
        grid-template-columns: 1fr;
    }
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

/* Reusable Grid and layout extensions */
.grid-3-col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.newsletter-section {
    padding: 80px 0;
    border-top: var(--border-color) 1px solid;
    border-bottom: var(--border-color) 1px solid;
    background: rgba(255, 255, 255, 0.005);
}

.cta-banner {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(59, 130, 246, 0.1));
    border-radius: 20px;
    border: var(--border-color) 1px solid;
    text-align: center;
    margin: 80px auto;
}

@media (max-width: 992px) {
    .grid-3-col {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .banner-title {
        font-size: 48px;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 30px;
    }
    .methodology-grid {
        grid-template-columns: 1fr 1fr !important;
    }
    .expertise-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .slide-content {
        grid-template-columns: 1fr;
    }
    .slide-right {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .main-navigation, .header-ctas {
        display: none !important;
    }
    .hamburger-icon {
        display: block;
    }
    .cards-grid, .contact-layout, .stats-grid, .methodology-grid {
        grid-template-columns: 1fr !important;
    }
    .banner-title {
        font-size: 36px;
    }
    .hero-description {
        font-size: 16px;
    }
}