:root {
    /* Colors - High Contrast Brutalist */
    --black: #000000;
    --white: #FFFFFF;
    --accent: #FF4500; /* Emergency Orange */
    --accent-dark: #cc3700;
    --concrete: #2a2a2a;
    --steel: #4a4a4a;
    --grey-light: #e0e0e0;
    
    /* Spacing & Layout */
    --border-width: 4px;
    --gap-standard: 20px;
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--black);
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--white);
    line-height: 1.1;
    overflow-x: hidden;
    background-color: var(--black);
}

.brutalist-bg {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)),
                url('https://www.transparenttextures.com/patterns/concrete-wall.png');
}

.container, .container-fluid {
    width: 100%;
    margin: 0 auto;
}

.container {
    max-width: 1400px;
    padding: 0 40px;
}

.container-fluid {
    padding: 0 60px;
}

/* Typography */
h1, h2, h3 {
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -2px;
}

h1 { font-size: clamp(4rem, 10vw, 8rem); margin-bottom: 40px; }
h2 { font-size: clamp(3rem, 8vw, 6rem); margin-bottom: 30px; }
h3 { font-size: 2.5rem; }

p {
    font-size: 1.25rem;
    max-width: 600px;
    margin-bottom: 2rem;
    font-weight: 400;
    line-height: 1.4;
    color: var(--grey-light);
}

.eyebrow {
    display: block;
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 10px;
    font-size: 1rem;
    letter-spacing: 2px;
}

/* Navbar */
.navbar {
    padding: 40px 0;
    border-bottom: var(--border-width) solid var(--white);
    background-color: var(--black);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container-fluid {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -1px;
}

.mission-status {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--accent);
}

.pulse {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
    animation: pulse-anim 1s infinite alternate;
}

@keyframes pulse-anim {
    from { opacity: 0.3; }
    to { opacity: 1; }
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 3rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--white);
    font-weight: 700;
    text-transform: uppercase;
    transition: color 0.2s;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 20px 40px;
    text-decoration: none;
    font-weight: 900;
    text-transform: uppercase;
    border: none;
    cursor: pointer;
}

.btn-accent {
    background-color: var(--accent);
    color: var(--white);
    border: 2px solid var(--accent);
}

.btn-accent-large {
    background-color: var(--accent);
    color: var(--white);
    font-size: 2rem;
    padding: 30px 60px;
    border-radius: 0;
}

.btn-accent:hover, .btn-accent-large:hover {
    background-color: var(--white);
    color: var(--accent);
}

.btn-outline-white {
    background-color: transparent;
    border: var(--border-width) solid var(--white);
    color: var(--white);
}

.btn-outline-white:hover {
    background-color: var(--white);
    color: var(--black);
}

/* Hero Section / Device Close-up */
.section {
    padding: 120px 0;
    border-bottom: var(--border-width) solid var(--white);
}

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

.specs {
    border: var(--border-width) solid var(--white);
    padding: 30px;
    margin-top: 40px;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 15px 0;
    border-bottom: 1px solid var(--steel);
}

.spec-item:last-child { border-bottom: none; }
.spec-item span:first-child { font-weight: 900; color: var(--accent); }

.device-image-container {
    width: 100%;
    aspect-ratio: 1/1;
    background: linear-gradient(135deg, #1a1a1a 0%, #333 50%, #1a1a1a 100%);
    border: var(--border-width) solid var(--white);
    position: relative;
    overflow: hidden;
}

.glass-reflection {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.1) 45%, rgba(255,255,255,0.2) 50%, rgba(255,255,255,0.1) 55%, transparent 60%);
    animation: shine 6s infinite linear;
}

@keyframes shine {
    from { transform: translateX(-30%) translateY(-30%); }
    to { transform: translateX(30%) translateY(30%); }
}

.overlay-tags .tag {
    position: absolute;
    background: var(--accent);
    padding: 5px 10px;
    font-weight: 900;
    font-size: 0.7rem;
    z-index: 10;
}

.tag.t1 { top: 20%; left: 10%; }
.tag.t2 { bottom: 30%; right: 10%; }

/* Kinetic Section / Motion Athlete */
.kinetic {
    background-color: var(--white);
    color: var(--black);
    overflow: hidden;
}

.kinetic p { color: #333; }

.kinetic-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    align-items: center;
}

.athlete-visual {
    position: relative;
    height: 600px;
    background: var(--black);
}

.blurred-silhouette {
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1552674605-db6ffd4facb5?auto=format&fit=crop&q=80&w=1000') center/cover;
    filter: grayscale(1) contrast(2) blur(8px);
    opacity: 0.6;
}

.motion-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(255, 69, 0, 0.2) 41px);
}

/* Digital Section / Data Overlay */
.digital {
    background-color: var(--black);
}

.data-grid-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.data-overlay {
    background: var(--concrete);
    border: var(--border-width) solid var(--white);
    aspect-ratio: 16/10;
    padding: 40px;
    position: relative;
    overflow: hidden;
    font-family: 'Courier New', Courier, monospace;
}

.telemetry-box {
    border: 1px solid var(--accent);
    padding: 20px;
    color: var(--accent);
}

.telemetry-header {
    border-bottom: 1px solid var(--accent);
    margin-bottom: 10px;
    font-weight: bold;
}

.telemetry-lines span {
    display: block;
    font-size: 0.8rem;
}

.ui-scanner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent);
    box-shadow: 0 0 20px var(--accent);
    animation: scan 3s infinite linear;
}

@keyframes scan {
    0% { top: 0; }
    100% { top: 100%; }
}

/* CTA Banner */
.cta-brutalist {
    padding: 100px 0;
}

.cta-banner {
    background: var(--white);
    color: var(--black);
    padding: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cta-group {
    text-align: right;
}

.serial-no {
    margin-top: 10px;
    font-family: monospace;
    font-weight: bold;
    color: var(--accent);
}

/* Footer */
.footer-brutalist {
    padding: 60px 0;
    border-top: var(--border-width) solid var(--white);
    background-color: var(--black);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    margin-left: 40px;
    font-weight: bold;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    color: var(--steel);
    font-size: 0.8rem;
    font-weight: bold;
}

/* Responsive */
@media (max-width: 1200px) {
    .grid-layout, .data-grid-layout, .kinetic-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .cta-banner {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    
    .cta-group { text-align: center; }
}

@media (max-width: 768px) {
    .container-fluid { padding: 0 20px; }
    .nav-links { display: none; }
    h1 { font-size: 4rem; }
    .section { padding: 60px 0; }
}