:root {
    --bg-color: #000000;
    --surface: #0a0a0a;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.06);
    --text-primary: #e8e8e8;
    --text-secondary: #888888;
    --accent: #00d4ff;
    --accent-dim: rgba(0, 212, 255, 0.12);
    --accent-glow: rgba(0, 212, 255, 0.25);
    --font-main: 'Outfit', sans-serif;
    --font-mono: 'Space Grotesk', sans-serif;
    --max: 1040px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    padding-bottom: 4rem;
}

h1, h2, h3, h4 {
    font-family: var(--font-mono);
    color: var(--text-primary);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease, opacity 0.2s ease;
}

/* Background glows */
.background-decor {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.08;
}

.orb-1 {
    top: -10%;
    right: -10%;
    width: 45vw;
    height: 45vw;
    background: var(--accent);
}

.orb-2 {
    bottom: -15%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: #0077ff;
}

/* Navigation Header */
header.nav {
    position: sticky;
    top: 0;
    z-index: 900;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
}

.nav-inner {
    max-width: var(--max);
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    text-decoration: none;
}

.logo span {
    color: var(--accent);
}

.bars {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 16px;
}

.bars span {
    width: 3px;
    background: var(--accent);
    border-radius: 1px;
    display: block;
    animation: pulse 1.6s ease-in-out infinite;
}

.bars span:nth-child(1) { height: 5px; animation-delay: 0s; }
.bars span:nth-child(2) { height: 9px; animation-delay: .15s; }
.bars span:nth-child(3) { height: 13px; animation-delay: .3s; }
.bars span:nth-child(4) { height: 16px; animation-delay: .45s; }

@keyframes pulse {
    0%, 100% { opacity: .35; }
    50% { opacity: 1; }
}

nav.links {
    display: flex;
    gap: 28px;
    font-size: 0.88rem;
    font-weight: 600;
}

nav.links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
    font-family: var(--font-mono);
}

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

.cta-btn {
    background: var(--accent);
    color: #000 !important;
    padding: 8px 18px;
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.3px;
    font-family: var(--font-mono);
    box-shadow: 0 4px 12px var(--accent-dim);
    transition: all 0.2s ease;
}

.cta-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--accent-glow);
}

@media (max-width: 720px) {
    nav.links {
        display: none;
    }
}

/* Page Layout Wrappers */
.about-hero {
    text-align: center;
    padding: 5rem 24px 3rem;
    max-width: 820px;
    margin: 0 auto;
}

.badge-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-dim);
    border: 1px solid rgba(0, 212, 255, 0.25);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.about-hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -1.5px;
    margin-bottom: 1.2rem;
    background: linear-gradient(135deg, #ffffff 40%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-hero p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 700px;
    margin: 0 auto;
}

/* Metrics Section */
.stats-banner {
    max-width: var(--max);
    margin: 1rem auto 4rem;
    padding: 0 24px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    background: var(--surface);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.stat-item {
    text-align: center;
    border-right: 1px solid var(--card-border);
    padding: 0.5rem;
}

.stat-item:last-child {
    border-right: none;
}

.stat-num {
    font-family: var(--font-mono);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.2rem;
}

.stat-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

@media (max-width: 820px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stat-item:nth-child(2) {
        border-right: none;
    }
    .stat-item {
        padding: 1rem 0;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .stat-item {
        border-right: none;
        border-bottom: 1px solid var(--card-border);
    }
    .stat-item:last-child {
        border-bottom: none;
    }
}

/* Features Grid */
.section-container {
    max-width: var(--max);
    margin: 0 auto 5rem;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    border-color: rgba(0, 212, 255, 0.4);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.08);
}

.icon-box {
    width: 48px;
    height: 48px;
    background: var(--accent-dim);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.2rem;
    color: var(--accent);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.6rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.93rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* Tech Architecture & Philosophy section */
.split-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.info-box {
    background: linear-gradient(145deg, var(--surface) 0%, rgba(255, 255, 255, 0.01) 100%);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2.2rem;
}

.info-box h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-box p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.65;
    margin-bottom: 1rem;
}

.info-box p:last-child {
    margin-bottom: 0;
}

.tech-list {
    list-style: none;
    margin-top: 1rem;
}

.tech-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-size: 0.92rem;
    margin-bottom: 0.8rem;
}

.tech-list li span.dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    display: inline-block;
}

@media (max-width: 768px) {
    .split-section {
        grid-template-columns: 1fr;
    }
}

/* Footer CTA Box */
.footer-cta {
    max-width: var(--max);
    margin: 2rem auto 4rem;
    padding: 0 24px;
}

.cta-box {
    background: linear-gradient(135deg, var(--surface) 0%, rgba(0, 212, 255, 0.03) 100%);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 3.5rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 120%, rgba(0, 212, 255, 0.08), transparent 60%);
    pointer-events: none;
}

.cta-box h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    color: #fff;
}

.cta-box p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

.cta-box a.run {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--accent);
    color: #000;
    font-weight: 700;
    font-size: 0.95rem;
    padding: 14px 32px;
    border-radius: 100px;
    text-decoration: none;
    box-shadow: 0 4px 15px var(--accent-dim);
    transition: all 0.25s ease;
    font-family: var(--font-mono);
}

.cta-box a.run:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
    background: #ffffff;
    color: #000;
}

/* Site Footer */
footer.site {
    border-top: 1px solid var(--card-border);
    padding: 2rem 24px;
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    background-color: var(--bg-color);
}