@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&family=JetBrains+Mono:wght@100;400&display=swap');

:root {
    --bg-color: #050505;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --border-color: #333333;
    --accent: #ffffff;
    --accent-dim: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(10, 10, 10, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

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

::selection {
    background-color: var(--text-primary);
    color: var(--bg-color);
}

#noise {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.04;
    background: url('data:image/svg+xml,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)"/%3E%3C/svg%3E');
}

h1,
h2,
h3 {
    font-weight: 300;
    letter-spacing: -0.02em;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.1em;
}

.logo span {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 0.8rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.demo-link {
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease !important;
}

.demo-link:hover {
    background: var(--text-primary);
    color: var(--bg-color) !important;
}

.demo-link .arrow {
    transition: transform 0.3s ease;
}

.demo-link:hover .arrow {
    transform: translate(2px, -2px);
}

.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 6rem 4rem 2rem 4rem;
    gap: 4rem;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero h1 .highlight {
    color: var(--text-secondary);
    font-style: italic;
}

.hero p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 480px;
}

.cta-group {
    display: flex;
    gap: 1rem;
}

.primary-btn,
.secondary-btn {
    padding: 1rem 2rem;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: all 0.3s ease;
}

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

.primary-btn:hover {
    background: #cccccc;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.secondary-btn {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.secondary-btn:hover {
    border-color: var(--text-primary);
    background: var(--accent-dim);
}

.hero-visual {
    width: 100%;
    height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.visualizer-container {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    transition: all 0.4s ease;
}

.visualizer-container:hover {
    box-shadow: 0 30px 60px rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

#vision-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.ui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.corner {
    position: absolute;
    width: 20px;
    height: 20px;
    border-color: rgba(255, 255, 255, 0.4);
    border-style: solid;
    transition: all 0.2s ease;
}

.top-left {
    top: 20px;
    left: 20px;
    border-width: 2px 0 0 2px;
}

.top-right {
    top: 20px;
    right: 20px;
    border-width: 2px 2px 0 0;
}

.bottom-left {
    bottom: 20px;
    left: 20px;
    border-width: 0 0 2px 2px;
}

.bottom-right {
    bottom: 20px;
    right: 20px;
    border-width: 0 2px 2px 0;
}

.status-panel {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-end;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
}

.status-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 0, 0, 0.4);
    padding: 0.25rem 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(4px);
}

.dot {
    width: 6px;
    height: 6px;
    background: var(--text-primary);
    border-radius: 50%;
}

.blinking {
    animation: blink 1.5s infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

.terminal-readout {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    padding: 1rem;
    border-left: 2px solid var(--text-primary);
    max-width: 80%;
    backdrop-filter: blur(4px);
    margin-top: auto;
}

.system-section {
    padding: 8rem 4rem;
    background: linear-gradient(180deg, var(--bg-color), #0a0a0a);
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

.arch-container {
    max-width: 1000px;
    margin: 0 auto 5rem;
    padding: 0 2rem;
}

.animated-arch {
    display: block;
    width: 100%;
}

.animated-arch .node {
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
}

.animated-arch path.arrow {
    stroke-dasharray: 1500;
    stroke-dashoffset: 1500;
    opacity: 0;
    animation: drawLine 1.5s ease forwards, fadeIn 0.1s forwards;
}

.animated-arch .arrow-group text {
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
}

/* Sequencing flow */
/* Path 1: Video -> VisionAssist */
.n-video {
    animation-delay: 0.5s;
}

.n-va {
    animation-delay: 1.0s;
}

.p-vid-va {
    animation-delay: 1.6s;
}

/* Path 2: User -> VisionAssist */
.n-user {
    animation-delay: 3.1s;
}

.p-user-va-path {
    animation-delay: 3.7s;
}

.p-user-va text {
    animation-delay: 4.6s;
}

/* Path 3: VisionAssist -> ML Model */
.p-va-ml {
    animation-delay: 5.6s;
}

.n-ml {
    animation-delay: 7.0s;
}

/* Path 4: ML Model -> User */
.p-ml-user-path {
    animation-delay: 8.0s;
}

.p-ml-user text {
    animation-delay: 9.2s;
}

/* Floating LLMs */
.n-llm-top {
    animation-delay: 10.2s;
}

.n-llm-bot {
    animation-delay: 10.6s;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

@keyframes drawLine {
    to {
        stroke-dashoffset: 0;
    }
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 3rem 2rem;
    border-radius: 8px;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
    cursor: default;
    position: relative;
    overflow: hidden;
    will-change: transform;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.03), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
}

.feature-card:hover::before {
    transform: translateX(100%);
}

.feature-icon {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    display: inline-block;
    border-bottom: 1px solid var(--text-secondary);
    padding-bottom: 0.5rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.architecture-deep-dive {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    max-width: 1200px;
    margin: 5rem auto 0 auto;
    padding: 0 2rem;
}

.deep-dive-block h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    border-left: 2px solid var(--text-secondary);
    padding-left: 1rem;
}

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

.deep-dive-block strong {
    color: var(--text-primary);
    font-weight: 600;
}

.feature-icon {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    display: inline-block;
    border-bottom: 1px solid var(--text-secondary);
    padding-bottom: 0.5rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.haptics-section {
    padding-top: 4rem;
}

.haptics-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    align-items: center;
}

.haptics-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.haptics-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

.haptics-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.highlight-text {
    font-family: var(--font-mono);
    color: var(--text-primary) !important;
    border-left: 2px solid var(--text-primary);
    padding-left: 1rem;
    margin-top: 2rem;
}

.haptics-demonstration {
    width: 100%;
}

.video-container {
    position: relative;
    width: 100%;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    overflow: hidden;
    background: var(--glass-bg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.segmentation-video {
    width: 100%;
    display: block;
    filter: brightness(0.85);
}

.context-box {
    align-self: flex-start;
    max-width: 100%;
    background: rgba(0, 0, 0, 0.7);
}

.sam-mask {
    position: absolute;
    bottom: -5px;
    right: 0px;
    width: 250px;
    height: 35px;
    background-color: #0a0a0a;
    z-index: 10;
}

footer {
    padding: 4rem;
    border-top: 1px solid var(--glass-border);
    background: #000;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-logo span {
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        padding-top: 8rem;
        text-align: center;
    }

    .hero-content {
        margin: 0 auto;
    }

    .cta-group {
        justify-content: center;
    }

    .hero-visual {
        height: 400px;
    }

    .features-grid,
    .architecture-deep-dive {
        grid-template-columns: 1fr;
    }

    .haptics-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .architecture-deep-dive {
        margin-top: 3rem;
        gap: 2rem;
        text-align: left;
    }

    .navbar {
        padding: 1.5rem 2rem;
    }

    .nav-links {
        display: none;
    }
}
/* Demo Section Styles */
.demo-section {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, transparent 100%);
}

.demo-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

.demo-instructions {
    padding-right: 2rem;
}

.demo-instructions h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.step-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-number {
    width: 40px;
    height: 40px;
    border: 1px solid var(--text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 600;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.step-content code {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: block;
    margin-top: 0.5rem;
}

.demo-features {
    margin-bottom: 3rem;
}

.demo-features h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.demo-features ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.demo-features li {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.tech-stack {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 1.5rem;
    border-radius: 8px;
}

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

.tech-stack p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-family: var(--font-mono);
    line-height: 1.8;
}

.demo-video {
    display: flex;
    align-items: center;
}

.video-wrapper {
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.demo-video-player {
    width: 100%;
    display: block;
}

.video-caption {
    background: var(--glass-bg);
    padding: 1rem;
    text-align: center;
    border-top: 1px solid var(--glass-border);
}

.video-caption p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

@media (max-width: 1024px) {
    .demo-container {
        grid-template-columns: 1fr;
    }

    .demo-features ul {
        grid-template-columns: 1fr;
    }
}