/* ========================
   CSS Reset & Variables
   ======================== */

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

:root {
    /* Color Palette */
    --color-bg-primary: #0a0e27;
    --color-bg-secondary: #111632;
    --color-bg-tertiary: #1a1f3a;
    --color-accent-primary: #00d4ff;
    --color-accent-secondary: #7b61ff;
    --color-accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7b61ff 100%);
    --color-text-primary: #ffffff;
    --color-text-secondary: #b4b9d3;
    --color-text-muted: #6b7299;
    --color-border: #1f2847;
    --color-success: #00ff88;
    --color-shadow: rgba(0, 212, 255, 0.15);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index layers */
    --z-navbar: 1000;
    --z-modal: 2000;
}

html {
    scroll-behavior: smooth;
}

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

/* ========================
   Typography
   ======================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
}

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

/* ========================
   Container & Layout
   ======================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================
   Navigation
   ======================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-navbar);
    transition: background var(--transition-medium);
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
}

.logo-icon {
    font-size: 2rem;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent-gradient);
    transition: width var(--transition-fast);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.35rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-fast);
}

/* ========================
   Hero Section
   ======================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(123, 97, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: var(--color-accent-gradient);
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    top: -200px;
    right: -200px;
    animation: float 20s ease-in-out infinite;
}

.hero-background::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: var(--color-accent-gradient);
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.1;
    bottom: -150px;
    left: -150px;
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(50px, 50px); }
}

.hero-content {
    text-align: center;
    max-width: 900px;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: var(--font-weight-black);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.gradient-text {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-top: 0.5rem;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================
   Buttons
   ======================== */

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--radius-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-medium);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--color-accent-gradient);
    color: var(--color-text-primary);
    box-shadow: 0 4px 15px var(--color-shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--color-shadow);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-accent-primary);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
}

/* ========================
   Scroll Indicator
   ======================== */

.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    animation: bounce 2s infinite;
}

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

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--color-accent-primary);
    border-bottom: 2px solid var(--color-accent-primary);
    transform: rotate(45deg);
}

/* ========================
   Section Styling
   ======================== */

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-weight-black);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
}

/* ========================
   About Section
   ======================== */

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

.about-content {
    display: grid;
    gap: var(--spacing-lg);
}

.about-text {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.about-text p {
    margin-bottom: var(--spacing-sm);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.stat-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: transform var(--transition-medium), border-color var(--transition-medium);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent-primary);
}

.stat-number {
    font-size: 3rem;
    font-weight: var(--font-weight-black);
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--color-text-secondary);
    font-size: 1rem;
}

/* ========================
   Solutions Section
   ======================== */

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.solution-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-medium);
}

.solution-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent-primary);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.1);
}

.solution-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.solution-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.solution-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.solution-features {
    list-style: none;
    margin-top: var(--spacing-sm);
}

.solution-features li {
    color: var(--color-text-muted);
    padding: 0.3rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.solution-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent-primary);
    font-weight: var(--font-weight-bold);
}

/* ========================
   Technology Section
   ======================== */

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

.tech-content {
    margin-bottom: var(--spacing-lg);
}

.tech-category {
    margin-bottom: var(--spacing-lg);
}

.tech-category h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent-primary);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-tag {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
    transform: translateY(-2px);
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.principle-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-medium);
}

.principle-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-5px);
}

.principle-card h4 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
}

.principle-card p {
    color: var(--color-text-secondary);
}

/* ========================
   Software Downloads Section
   ======================== */

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

.software-content {
    display: grid;
    gap: var(--spacing-lg);
}

.software-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.software-intro p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.featured-software {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.software-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-medium);
}

.software-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent-primary);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.1);
}

.software-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
}

.software-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.software-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.software-version {
    display: inline-block;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: var(--font-weight-bold);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.software-links {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.software-links a {
    color: var(--color-accent-primary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-accent-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

.software-links a:hover {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

.coming-soon {
    color: var(--color-text-muted);
    font-style: italic;
    font-size: 0.9rem;
}

/* ========================
   Contact Section
   ======================== */

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    gap: var(--spacing-sm);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-medium);
}

.contact-item:hover {
    border-color: var(--color-accent-primary);
    transform: translateX(5px);
}

.contact-icon {
    font-size: 2rem;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.contact-item p {
    color: var(--color-text-secondary);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

.form-group input,
.form-group textarea {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* ========================
   Footer
   ======================== */

.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-brand p {
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

.footer-column h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent-primary);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-accent-primary);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    text-align: center;
    color: var(--color-text-muted);
}

/* ========================
   Responsive Design
   ======================== */

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background: rgba(10, 14, 39, 0.98);
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        transition: left var(--transition-medium);
        gap: var(--spacing-sm);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .hero {
        min-height: 90vh;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
}

/* ========================
   Animations & Effects
   ======================== */

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-accent-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-secondary);
}

/* Selection */
::selection {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
}