/* CSS Custom Properties */
:root {
    /* Colors */
    --primary-bg: #0a0e27;
    --secondary-bg: #1a1f3a;
    --accent-blue: #64ffda;
    --electric-blue: #00d9ff;
    --neon-purple: #bd93f9;
    --text-primary: #e6f1ff;
    --text-secondary: #8892b0;
    --card-bg: rgba(26, 31, 58, 0.8);
    --card-border: rgba(100, 255, 218, 0.2);
    
    /* Typography */
    --font-heading: 'Orbitron', monospace;
    --font-body: 'Space Grotesk', sans-serif;
    
    /* Spacing */
    --section-padding: 5rem 2rem;
    --card-padding: 2rem;
    --border-radius: 12px;
    
    /* Shadows */
    --glow-shadow: 0 0 20px rgba(100, 255, 218, 0.3);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    
    /* Animations */
    --transition-fast: 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    --transition-smooth: 0.6s cubic-bezier(0.23, 1, 0.320, 1);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    cursor: none;
    opacity: 1;
    transition: opacity 0.5s ease-in-out;
}

/* Default state: content hidden until explicitly loaded */
.main-content,
.footer {
    opacity: 0;
    visibility: hidden;
}

/* Loading state: completely remove non-loader elements from display */
body.loading .main-content,
body.loading .footer,
body.loading .background-container,
body.loading .cursor-trail {
    display: none !important;
}

/* Force loader visibility during loading - highest priority */
body.loading .bkc-loader,
.bkc-loader {
    opacity: 1 !important;
    visibility: visible !important;
    display: flex !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 10000 !important;
}

/* Loaded state: show content, hide loader, show background */
body.loaded .main-content,
body.loaded .footer {
    opacity: 1;
    visibility: visible;
    display: block;
    transition: opacity 0.5s ease-in-out;
}

body.loaded .background-container {
    display: block;
    opacity: 1;
    visibility: visible;
}

body.loaded .cursor-trail {
    display: block;
    opacity: 1;
    visibility: visible;
}

/* Hide loader when loaded */
body.loaded .bkc-loader {
    display: none !important;
}

/* Custom Cursor */
.cursor-trail {
    position: fixed;
    width: 20px;
    height: 20px;
    background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: screen;
    opacity: 0.8;
    transition: transform 0.1s ease-out;
}

/* Background Container */
.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.circuit-canvas {
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

/* Floating Particles */
.floating-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.floating-particles::before {
    content: '';
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--accent-blue);
    border-radius: 50%;
    box-shadow: 
        200px 300px var(--accent-blue),
        400px 150px var(--electric-blue),
        600px 400px var(--neon-purple),
        800px 200px var(--accent-blue),
        1000px 350px var(--electric-blue),
        1200px 100px var(--neon-purple),
        150px 450px var(--accent-blue),
        350px 50px var(--electric-blue),
        550px 250px var(--neon-purple),
        750px 450px var(--accent-blue);
    animation: floatingParticles 20s infinite linear;
}

@keyframes floatingParticles {
    0%, 100% {
        transform: translateY(0px);
        opacity: 0;
    }
    10%, 90% {
        opacity: 1;
    }
    50% {
        transform: translateY(-100px);
    }
}

/* Main Content */
.main-content {
    position: relative;
    z-index: 1;
}

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

.hero-content {
    max-width: 800px;
    padding: 2rem;
    position: relative;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 8vw, 8rem);
    font-weight: 900;
    line-height: 0.9;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    position: relative;
}

.title-line {
    display: block;
    background: linear-gradient(45deg, var(--accent-blue), var(--electric-blue), var(--neon-purple));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 3s ease-in-out infinite alternate,
               glitchEffect 4s infinite linear;
    position: relative;
}

.title-line:nth-child(2) {
    animation-delay: 0.5s;
}

.title-line:nth-child(3) {
    animation-delay: 1s;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

@keyframes glitchEffect {
    0%, 90%, 100% { 
        transform: translateX(0);
    }
    91% { 
        transform: translateX(-2px);
    }
    92% { 
        transform: translateX(2px);
    }
    93% { 
        transform: translateX(-1px);
    }
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    color: var(--text-secondary);
    font-weight: 300;
    letter-spacing: 0.05em;
    margin-bottom: 3rem;
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.5s forwards;
}

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

.hero-decoration {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    pointer-events: none;
    z-index: -1;
}

.tech-lines {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 40%, var(--accent-blue) 41%, var(--accent-blue) 42%, transparent 43%);
    opacity: 0.1;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* About Section */
.about {
    padding: var(--section-padding);
    position: relative;
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--text-primary);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.header-line {
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--electric-blue));
    margin: 0 auto;
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.header-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--text-primary), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

/* Content Cards */
.content-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: var(--card-padding);
    backdrop-filter: blur(10px);
    position: relative;
    transition: all var(--transition-smooth);
    cursor: pointer;
    overflow: hidden;
}

.content-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(100, 255, 218, 0.1), transparent);
    transition: left var(--transition-smooth);
}

.content-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--accent-blue);
    box-shadow: var(--glow-shadow), var(--card-shadow);
}

.content-card:hover::before {
    left: 100%;
}

.content-card[data-tilt] {
    transform-style: preserve-3d;
}

.card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 1.5rem;
    color: var(--accent-blue);
    transition: all var(--transition-fast);
}

.content-card:hover .card-icon {
    color: var(--electric-blue);
    transform: scale(1.1) rotateY(15deg);
}

.content-card h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    position: relative;
}

.content-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* Company Statement */
.company-statement {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    padding: 3rem 2rem;
    position: relative;
}

.statement-text {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    line-height: 1.8;
    color: var(--text-secondary);
    position: relative;
    font-weight: 300;
}

.highlight {
    color: var(--accent-blue);
    font-weight: 500;
    font-family: var(--font-heading);
    text-shadow: 0 0 10px rgba(100, 255, 218, 0.5);
}

/* Footer */
.footer {
    padding: 3rem 2rem;
    border-top: 1px solid var(--card-border);
    position: relative;
    overflow: hidden;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    position: relative;
}

.footer-text p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-decoration {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    overflow: hidden;
}

.footer-lines {
    width: 200%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--accent-blue) 25%, 
        var(--electric-blue) 50%, 
        var(--neon-purple) 75%, 
        transparent 100%);
    animation: slideLines 3s ease-in-out infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --section-padding: 3rem 1rem;
        --card-padding: 1.5rem;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .hero-content {
        padding: 1rem;
    }
    
    .content-card {
        margin-bottom: 1rem;
    }
    
    body {
        cursor: auto;
    }
    
    .cursor-trail {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        margin-bottom: 1.5rem;
    }
    
    .hero-subtitle {
        margin-bottom: 2rem;
    }
    
    .content-card {
        padding: 1.5rem;
    }
}

/* Performance Optimizations */
.content-card,
.title-line,
.hero-subtitle {
    will-change: transform, opacity;
    contain: layout style paint;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .floating-particles::before {
        animation: none;
    }
    
    .tech-lines {
        animation: none;
    }
}