/* ===================================
   CSS Custom Properties (Variables)
   =================================== */
:root {
    /* Red Bull Racing Color Palette */
    --navy-dark: #0A0E27;
    --navy-base: #13192F;
    --navy-light: #1A2039;
    --electric-blue: #00D9FF;
    --electric-blue-glow: rgba(0, 217, 255, 0.5);
    --racing-yellow: #FDB71A;
    --racing-gold: #FFD700;
    --white: #FFFFFF;
    --grey-light: #C4C4C4;
    --grey-mid: #8A8A8A;
    --grey-dark: #3A3A3A;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Courier New', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

    /* Borders */
    --border-radius: 2px;
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--navy-dark);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-base) 50%, var(--navy-light) 100%);
}

/* Carbon Fiber Pattern */
.carbon-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    background-image:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            var(--white) 2px,
            var(--white) 4px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            var(--white) 2px,
            var(--white) 4px
        );
    background-size: 4px 4px;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--spacing-md);
}

.hero-accent-line {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--electric-blue) 0%, var(--racing-yellow) 100%);
    margin: 0 auto var(--spacing-md);
    transform: skewX(-20deg);
    box-shadow: 0 0 20px var(--electric-blue-glow);
}

.hero h1 {
    font-size: clamp(4rem, 15vw, 10rem);
    font-weight: 900;
    letter-spacing: -0.05em;
    line-height: 0.9;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--white) 0%, var(--electric-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    text-transform: uppercase;
}

/* Glitch Effect on Hover */
.glitch {
    position: relative;
}

.glitch:hover::before,
.glitch:hover::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--white) 0%, var(--electric-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glitch:hover::before {
    animation: glitch-1 0.3s infinite;
    clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
}

.glitch:hover::after {
    animation: glitch-2 0.3s infinite;
    clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
}

@keyframes glitch-1 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
}

@keyframes glitch-2 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(2px, -2px); }
    40% { transform: translate(2px, 2px); }
    60% { transform: translate(-2px, -2px); }
    80% { transform: translate(-2px, 2px); }
}

.company-name {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 300;
    letter-spacing: 0.3em;
    color: var(--grey-light);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.tagline {
    font-size: clamp(1rem, 2vw, 1.3rem);
    font-weight: 300;
    color: var(--grey-mid);
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    margin-top: var(--spacing-lg);
}

/* Primary Button */
.btn-primary {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--electric-blue) 0%, #0088CC 100%);
    color: var(--navy-dark);
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
    transition: var(--transition-base);
    box-shadow: 0 4px 15px rgba(0, 217, 255, 0.3);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: var(--transition-slow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 217, 255, 0.5);
}

.btn-primary:hover::before {
    left: 100%;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--grey-mid);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--electric-blue), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 0.3; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(10px); }
}

/* ===================================
   Section Headers
   =================================== */
.section-header {
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-number {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--electric-blue);
    letter-spacing: 0.2em;
    margin-bottom: var(--spacing-xs);
    font-weight: 700;
}

.section-header h2 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.racing-line {
    width: 120px;
    height: 3px;
    background: linear-gradient(90deg, var(--electric-blue) 0%, transparent 100%);
    transform: skewX(-20deg);
}

/* ===================================
   About Section
   =================================== */
.about {
    padding: var(--spacing-xl) 0;
    background: var(--navy-base);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, var(--navy-light) 100%);
    clip-path: polygon(30% 0, 100% 0, 100% 100%, 0% 100%);
    opacity: 0.3;
    pointer-events: none;
}

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

.about-intro {
    max-width: 800px;
}

.lead {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    line-height: 1.6;
    color: var(--grey-light);
    margin-bottom: var(--spacing-md);
}

.about-intro p {
    font-size: clamp(1rem, 2vw, 1.125rem);
    line-height: 1.8;
    color: var(--grey-mid);
}

.about-intro strong {
    color: var(--electric-blue);
    font-weight: 600;
}

/* Expertise Cards */
.expertise-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.expertise-card {
    background: linear-gradient(135deg, var(--navy-light) 0%, var(--navy-base) 100%);
    padding: var(--spacing-md);
    border: 1px solid rgba(0, 217, 255, 0.1);
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
    transition: var(--transition-base);
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: var(--transition-base);
}

.expertise-card:hover {
    transform: translateY(-4px);
    border-color: var(--electric-blue);
    box-shadow: 0 8px 30px rgba(0, 217, 255, 0.2);
}

.expertise-card:hover::before {
    opacity: 1;
}

.card-accent {
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--electric-blue) 0%, var(--racing-yellow) 100%);
    margin-bottom: var(--spacing-md);
    transform: skewX(-20deg);
}

.expertise-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.expertise-card p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--grey-mid);
}

.expertise-card strong {
    color: var(--electric-blue);
    font-weight: 600;
}

/* ===================================
   Services Section
   =================================== */
.services {
    padding: var(--spacing-xl) 0;
    background: var(--navy-dark);
}

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

.service-item {
    text-align: center;
    padding: var(--spacing-md);
    transition: var(--transition-base);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--navy-light) 0%, var(--navy-base) 100%);
    border: 2px solid rgba(0, 217, 255, 0.2);
    border-radius: 50%;
    transition: var(--transition-base);
}

.service-icon svg {
    width: 40px;
    height: 40px;
    color: var(--electric-blue);
    transition: var(--transition-base);
}

.service-item:hover .service-icon {
    border-color: var(--electric-blue);
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.3);
    transform: scale(1.1);
}

.service-item:hover .service-icon svg {
    transform: scale(1.1);
    filter: drop-shadow(0 0 10px var(--electric-blue));
}

.service-item h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.service-item p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--grey-mid);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--navy-base) 0%, var(--navy-dark) 100%);
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    line-height: 1.8;
    color: var(--grey-light);
    margin-bottom: var(--spacing-lg);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--navy-light) 0%, var(--navy-base) 100%);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--white);
    font-size: 1.1rem;
    transition: var(--transition-base);
    min-width: 320px;
    position: relative;
    overflow: hidden;
}

.contact-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 217, 255, 0.1), transparent);
    transition: var(--transition-slow);
}

.contact-link:hover::before {
    left: 100%;
}

.contact-link:hover {
    border-color: var(--electric-blue);
    box-shadow: 0 4px 20px rgba(0, 217, 255, 0.3);
    transform: translateX(5px);
}

.contact-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--electric-blue);
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: var(--spacing-lg) 0;
    background: var(--navy-dark);
    border-top: 1px solid rgba(0, 217, 255, 0.1);
}

.footer-content {
    text-align: center;
    color: var(--grey-mid);
    font-size: 0.875rem;
}

.footer-content p {
    margin-bottom: var(--spacing-sm);
}

.footer-legal {
    font-size: 0.75rem;
    color: var(--grey-dark);
    max-width: 600px;
    margin: var(--spacing-sm) auto 0;
    line-height: 1.6;
}

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

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

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .hero {
        min-height: 90vh;
    }

    .scroll-indicator {
        bottom: var(--spacing-md);
    }

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

    .expertise-cards {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .contact-link {
        min-width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-accent-line {
        width: 40px;
    }

    .btn-primary {
        padding: 0.875rem 2rem;
        font-size: 0.875rem;
    }

    .racing-line {
        width: 80px;
    }
}

/* ===================================
   Performance Optimizations
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}