:root {
    /* Color Palette */
    --bg-dark: #060b19;
    --bg-darker: #03060f;
    --bg-card: rgba(15, 23, 42, 0.6);
    --primary-blue: #2563eb;
    --primary-blue-hover: #1d4ed8;
    --accent-blue: #3b82f6;
    --neon-blue: #60a5fa;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing & Layout */
    --container-width: 1200px;
    --section-spacing: 120px;
    
    /* Effects */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --glow-shadow: 0 0 40px rgba(59, 130, 246, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: clamp(3rem, 5vw, 5rem);
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: clamp(2rem, 3vw, 3rem);
    margin-bottom: 1rem;
}

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

p {
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

/* Layout */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: var(--section-spacing) 0;
}

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

.mt-4 {
    margin-top: 2rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    border-radius: 50px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.39);
}

.btn-primary:hover {
    background-color: var(--primary-blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
}

.btn-outline:hover {
    border-color: var(--accent-blue);
    background-color: rgba(59, 130, 246, 0.1);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition-smooth);
    background: transparent;
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(6, 11, 25, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.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: white;
    text-decoration: none;
    letter-spacing: 1px;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a:not(.btn) {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:not(.btn):hover {
    color: var(--neon-blue);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background-color: white;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

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

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(6, 11, 25, 0.9) 0%, rgba(6, 11, 25, 0.4) 100%);
}

.hero-content {
    max-width: 800px;
    z-index: 1;
}

.hero-content p {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: 2.5rem;
}

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

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    opacity: 0.7;
}

.scroll-indicator span {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-indicator .line {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.scroll-indicator .line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    animation: scroll-down 2s infinite ease-in-out;
}

@keyframes scroll-down {
    0% { top: -100%; }
    100% { top: 100%; }
}

/* Stats Section */
.stats {
    background: linear-gradient(to bottom, transparent, var(--bg-darker));
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-number {
    font-size: 4rem;
    color: var(--neon-blue);
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-main);
    margin: 0;
}

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

.tech-grid.reverse .tech-text {
    order: 2;
}

.tech-grid.reverse .tech-image {
    order: 1;
}

.feature-list {
    list-style: none;
    margin-top: 2rem;
}

.feature-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--neon-blue);
    font-weight: bold;
}

.feature-list li strong {
    color: var(--text-main);
}

.image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
}

.image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 2;
}

.glow-effect {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: var(--primary-blue);
    filter: blur(100px);
    opacity: 0.3;
    z-index: 1;
}

.glow-effect.blue {
    background: var(--neon-blue);
}

/* Solutions Section */
.bg-dark {
    background-color: var(--bg-darker);
    position: relative;
}

.bg-dark::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.1), transparent);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 2.5rem;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-10px);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    padding: 1rem;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 15px;
    color: var(--neon-blue);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card p {
    margin: 0;
    font-size: 1rem;
}

/* Contact / Form */
.contact-form {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    gap: 1rem;
}

.form-input {
    flex: 1;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: white;
    font-family: var(--font-body);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.form-input:focus {
    border-color: var(--accent-blue);
}

/* Footer */
.footer {
    background-color: #02040a;
    padding: 5rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    margin-top: 1rem;
    font-size: 0.9rem;
}

.footer-links h4 {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    margin: 0;
    font-size: 0.875rem;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

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

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 992px) {
    .tech-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .tech-grid.reverse .tech-text { order: 1; }
    .tech-grid.reverse .tech-image { order: 2; }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* Add mobile menu logic in JS if needed */
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .contact-form {
        flex-direction: column;
    }
    
    h1 {
        font-size: clamp(2.5rem, 8vw, 3rem);
    }
}

/* Dropdowns */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.dropdown-toggle::after {
    content: '▼';
    font-size: 0.6rem;
    transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-toggle::after {
    transform: rotate(180deg);
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(6, 11, 25, 0.95);
    min-width: 280px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    backdrop-filter: blur(12px);
    padding: 0.5rem 0;
    margin-top: 10px;
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 20px;
    border-width: 0 10px 10px 10px;
    border-style: solid;
    border-color: transparent transparent rgba(6, 11, 25, 0.95) transparent;
}

/* Invisible bridge to prevent hover loss when moving mouse from link to menu */
.dropdown-menu::after {
    content: '';
    position: absolute;
    top: -15px;
    left: 0;
    width: 100%;
    height: 15px;
    background: transparent;
}

.dropdown:hover .dropdown-menu {
    display: block;
    animation: fadeIn 0.3s ease;
}

.dropdown-menu a {
    color: var(--text-main);
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    display: block;
    font-size: 0.9rem;
    transition: background-color 0.3s, color 0.3s;
}

.dropdown-menu a:hover {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--neon-blue) !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}