:root {
    --bg: #060914;
    --bg-alt: #0a1022;
    --surface: rgba(255, 255, 255, 0.035);
    --border: rgba(255, 255, 255, 0.08);
    --brand: #5271ff;
    --accent: #7d93ff;
    --accent-2: #a9b8ff;
    --gold: #c9d3ff;
    --text: #e6ebf5;
    --muted: #9ca8cc;
    --gradient: linear-gradient(120deg, #3d5cf5 0%, var(--brand) 45%, #8fa3ff 100%);
    --bs-body-bg: var(--bg);
    --bs-body-color: var(--text);
    --bs-secondary-color: var(--muted);
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', system-ui, sans-serif;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, .brand { font-family: 'Space Grotesk', sans-serif; letter-spacing: -0.01em; }

.text-secondary-emphasis { color: var(--muted) !important; }
.text-accent { color: var(--accent) !important; }
.letter-spaced { letter-spacing: 0.2em; }
.text-gradient {
    background: var(--gradient);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: shimmer 6s linear infinite;
}

@keyframes shimmer { to { background-position: 200% center; } }

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

/* ---------- Navbar ---------- */
.navbar {
    padding: 1.1rem 0;
    transition: padding .35s ease, background-color .35s ease, backdrop-filter .35s ease, border-color .35s ease;
    border-bottom: 1px solid transparent;
}
.navbar.scrolled {
    padding: .6rem 0;
    background: rgba(6, 9, 20, .78);
    backdrop-filter: blur(14px);
    border-bottom-color: var(--border);
}
.brand { font-weight: 700; font-size: 1.35rem; color: #fff; display: inline-flex; align-items: center; gap: .55rem; }
.brand-name {
    background: linear-gradient(90deg, #6f89ff 0%, var(--brand) 55%, #8fa3ff 100%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
    letter-spacing: .04em;
}
.brand-zero {
    display: inline-block; -webkit-text-fill-color: #fff; color: #fff;
    text-shadow: 0 0 12px rgba(82, 113, 255, .9);
    transition: transform .4s ease;
}
.brand:hover .brand-zero { transform: rotate(90deg); }
.brand-logo { border-radius: 50%; transition: transform .6s cubic-bezier(.2, .8, .2, 1), filter .3s ease; filter: drop-shadow(0 0 10px rgba(82, 113, 255, .45)); }
.brand:hover .brand-logo { transform: rotate(90deg) scale(1.05); filter: drop-shadow(0 0 14px rgba(82, 113, 255, .7)); }
.footer .brand-logo { width: 30px; height: 30px; }
.navbar .nav-link { color: var(--muted); font-weight: 500; position: relative; padding: .5rem .85rem !important; transition: color .25s; }
.navbar .nav-link::after {
    content: ''; position: absolute; left: .85rem; right: .85rem; bottom: .25rem; height: 2px;
    background: var(--gradient); transform: scaleX(0); transform-origin: left; transition: transform .3s ease;
}
.navbar .nav-link:hover, .navbar .nav-link.active { color: #fff; }
.navbar .nav-link:hover::after, .navbar .nav-link.active::after { transform: scaleX(1); }
.navbar-toggler { color: #fff; }
.navbar-toggler:focus { box-shadow: none; }
@media (max-width: 991.98px) {
    .navbar-collapse { background: rgba(10, 16, 34, .96); border: 1px solid var(--border); border-radius: 1rem; padding: 1rem; margin-top: .75rem; }
}

/* ---------- Buttons ---------- */
.btn-glow {
    background: linear-gradient(120deg, #3a57ee 0%, var(--brand) 50%, #3a57ee 100%); background-size: 200% auto; border: 0; color: #fff; font-weight: 600;
    box-shadow: 0 8px 30px -8px rgba(82, 113, 255, .55);
    transition: background-position .5s ease, transform .25s ease, box-shadow .25s ease;
}
.btn-glow:hover { background-position: right center; color: #fff; transform: translateY(-2px); box-shadow: 0 14px 40px -8px rgba(143, 163, 255, .6); }
.btn-outline-light { border-color: rgba(255, 255, 255, .25); transition: all .25s ease; }
.btn-outline-light:hover { transform: translateY(-2px); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 8rem 0 5rem; overflow: hidden; }
#networkCanvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .55; }
.hero-glow {
    position: absolute; inset: -20%;
    background:
        radial-gradient(40% 40% at 20% 30%, rgba(82, 113, 255, .16), transparent 70%),
        radial-gradient(35% 35% at 80% 60%, rgba(143, 163, 255, .2), transparent 70%),
        radial-gradient(25% 25% at 60% 10%, rgba(201, 211, 255, .08), transparent 70%);
    animation: drift 18s ease-in-out infinite alternate;
    pointer-events: none;
}
@keyframes drift { to { transform: translate3d(4%, -3%, 0) rotate(6deg); } }
.eyebrow {
    display: inline-flex; align-items: center; gap: .5rem; padding: .45rem 1rem; border-radius: 999px;
    background: rgba(82, 113, 255, .08); border: 1px solid rgba(82, 113, 255, .25); color: var(--accent); font-size: .85rem; font-weight: 500;
}
.scroll-cue { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); color: var(--muted); font-size: 1.5rem; animation: bob 2s ease-in-out infinite; }
@keyframes bob { 50% { transform: translate(-50%, 8px); } }

/* Orbit visual */
.orbit { position: relative; width: 420px; height: 420px; margin: 0 auto; }
.orbit-core {
    position: absolute; inset: 50%; width: 140px; height: 140px; margin: -70px; border-radius: 50%;
    box-shadow: 0 0 60px rgba(82, 113, 255, .55), 0 0 0 10px rgba(82, 113, 255, .08);
    animation: pulse 4s ease-in-out infinite;
}
.orbit-core img { width: 100%; height: 100%; display: block; }
@keyframes pulse { 50% { box-shadow: 0 0 95px rgba(82, 113, 255, .75), 0 0 0 18px rgba(82, 113, 255, .05); } }
.orbit-ring { position: absolute; border-radius: 50%; border: 1px dashed rgba(255, 255, 255, .14); top: 50%; left: 50%; }
.ring-1 { width: 260px; height: 260px; margin: -130px; animation: spin 26s linear infinite; }
.ring-2 { width: 410px; height: 410px; margin: -205px; animation: spin 40s linear infinite reverse; }
.orbit-node {
    --r: 130px;
    position: absolute; top: 50%; left: 50%; width: 52px; height: 52px; margin: -26px;
    display: grid; place-items: center; border-radius: 14px;
    background: var(--bg-alt); border: 1px solid var(--border); color: var(--accent); font-size: 1.35rem;
    transform: rotate(var(--a)) translate(var(--r)) rotate(calc(-1 * var(--a)));
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, .8);
}
.ring-2 .orbit-node { --r: 205px; color: var(--accent-2); }
.orbit-node i { animation: spin 26s linear infinite reverse; }
.ring-2 .orbit-node i { animation: spin 40s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Sections ---------- */
.section { padding: 7rem 0; position: relative; }
.section-alt { background: var(--bg-alt); }
.section-alt::before {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}
.section > .container { position: relative; }
.section-tag {
    display: inline-block; font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .2em; color: var(--accent); margin-bottom: .75rem;
}
.section-tag::before { content: ''; display: inline-block; width: 24px; height: 2px; background: var(--accent); vertical-align: middle; margin-right: .6rem; }
.section-title { font-size: clamp(1.9rem, 3.5vw, 2.75rem); font-weight: 700; margin-bottom: 1.25rem; }

/* Cards */
.glass-card, .feature-card, .principle, .timeline-card, .stack-layer, .flow-step, .fiat-note {
    background: var(--surface); border: 1px solid var(--border); border-radius: 1.1rem;
    backdrop-filter: blur(6px);
    transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease, background .35s ease;
}
.glass-card { padding: 1.75rem; }
.glass-card:hover, .principle:hover, .timeline-card:hover { border-color: rgba(82, 113, 255, .35); transform: translateY(-4px); }

.icon-badge {
    width: 52px; height: 52px; display: inline-grid; place-items: center; border-radius: 14px; flex-shrink: 0;
    font-size: 1.4rem; color: var(--accent);
    background: linear-gradient(135deg, rgba(82, 113, 255, .16), rgba(143, 163, 255, .16));
    border: 1px solid rgba(82, 113, 255, .25);
}
.icon-badge-warn { color: var(--gold); background: rgba(201, 211, 255, .1); border-color: rgba(201, 211, 255, .25); }

.quote { border-left: 3px solid var(--accent); padding: .5rem 0 .5rem 1.25rem; font-size: 1.1rem; color: var(--text); margin: 0; }
.quote .bi-quote { color: var(--accent); font-size: 1.6rem; display: block; line-height: 1; }

.feature-card { padding: 2rem; position: relative; overflow: hidden; }
.feature-card::before {
    content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
    background: var(--gradient); opacity: 0; transition: opacity .35s ease;
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor; mask-composite: exclude;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: 0 25px 50px -20px rgba(82, 113, 255, .35); }
.feature-card:hover::before { opacity: 1; }
.feature-card:hover .icon-badge { transform: rotate(-8deg) scale(1.08); }
.feature-card .icon-badge { transition: transform .35s ease; }

/* Flow */
.flow { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1rem; counter-reset: step; }
.flow-step { padding: 1.5rem 1.25rem; position: relative; text-align: center; }
.flow-step:hover { transform: translateY(-6px); border-color: rgba(143, 163, 255, .45); background: rgba(143, 163, 255, .07); }
.flow-num { position: absolute; top: .75rem; right: 1rem; font-family: 'Space Grotesk'; font-weight: 700; color: rgba(255, 255, 255, .12); font-size: 1.4rem; }
.flow-icon {
    width: 58px; height: 58px; margin: .25rem auto 1rem; border-radius: 50%; display: grid; place-items: center; font-size: 1.4rem; color: #fff;
    background: var(--gradient); box-shadow: 0 0 25px rgba(82, 113, 255, .35);
}
.flow-step:hover .flow-icon { animation: pop .5s ease; }
@keyframes pop { 50% { transform: scale(1.15) rotate(10deg); } }

/* Marquee */
.marquee { overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee-track { display: flex; gap: .75rem; width: max-content; animation: scroll-x 40s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes scroll-x { to { transform: translateX(-50%); } }
.chip {
    display: inline-flex; align-items: center; gap: .5rem; white-space: nowrap; padding: .6rem 1.1rem; border-radius: 999px;
    background: var(--surface); border: 1px solid var(--border); color: var(--text); font-size: .9rem;
}
.chip i { color: var(--accent); }

/* Architecture stack */
.stack { display: flex; flex-direction: column; gap: .75rem; perspective: 900px; }
.stack-layer { display: flex; gap: 1.1rem; align-items: center; padding: 1.15rem 1.4rem; }
.stack-layer > i { font-size: 1.6rem; color: var(--accent); width: 2rem; text-align: center; }
.stack-layer:hover { transform: translateX(10px); border-color: rgba(82, 113, 255, .4); }
.stack-layer.is-core { background: linear-gradient(120deg, rgba(82, 113, 255, .12), rgba(143, 163, 255, .14)); border-color: rgba(82, 113, 255, .4); }
.stack-layer.is-core::after { content: 'Kryptocent core'; margin-left: auto; font-size: .7rem; text-transform: uppercase; letter-spacing: .12em; color: var(--accent); white-space: nowrap; }
.fiat-note { display: flex; gap: 1rem; padding: 1.25rem; border-color: rgba(201, 211, 255, .25); }
.fiat-note > i { font-size: 1.8rem; color: var(--gold); }

/* Capabilities */
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .85rem; }
.check-list li { display: flex; gap: .75rem; align-items: center; color: var(--text); }
.check-list i { color: var(--accent); }
.principle { display: flex; gap: 1rem; padding: 1.25rem; height: 100%; }
.principle > i { font-size: 1.5rem; color: var(--accent-2); }

/* Timeline */
.timeline { position: relative; max-width: 960px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; top: 0; bottom: 0; left: 50%; width: 2px; margin-left: -1px; background: linear-gradient(var(--accent), var(--accent-2)); opacity: .5; }
.timeline-item { position: relative; width: 50%; padding: 0 3rem 2.5rem; }
.timeline-item.left { left: 0; text-align: right; }
.timeline-item.right { left: 50%; }
.timeline-dot {
    position: absolute; top: .5rem; width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
    background: var(--bg); border: 2px solid var(--accent); color: var(--accent); font-size: 1.1rem; z-index: 1;
    box-shadow: 0 0 0 6px rgba(82, 113, 255, .08);
}
.timeline-item.left .timeline-dot { right: -23px; }
.timeline-item.right .timeline-dot { left: -23px; }
.timeline-card { padding: 1.4rem 1.6rem; }
.phase { font-size: .75rem; text-transform: uppercase; letter-spacing: .15em; font-weight: 600; color: var(--gold); }
@media (max-width: 767.98px) {
    .timeline::before { left: 23px; }
    .timeline-item, .timeline-item.left, .timeline-item.right { width: 100%; left: 0; text-align: left; padding: 0 0 2rem 4.25rem; }
    .timeline-item.left .timeline-dot, .timeline-item.right .timeline-dot { left: 0; right: auto; }
}

/* Contact */
.cta {
    position: relative; padding: clamp(2rem, 5vw, 4rem); border-radius: 1.75rem; overflow: hidden;
    background: linear-gradient(135deg, rgba(82, 113, 255, .1), rgba(143, 163, 255, .14)), var(--bg-alt);
    border: 1px solid rgba(82, 113, 255, .25);
}
.cta::after {
    content: ''; position: absolute; width: 380px; height: 380px; right: -120px; top: -160px; border-radius: 50%;
    background: radial-gradient(circle, rgba(143, 163, 255, .35), transparent 70%); pointer-events: none;
}
.contact-tile {
    position: relative; z-index: 1; display: flex; align-items: center; gap: 1rem; padding: 1rem 1.25rem; margin-bottom: .85rem;
    border-radius: 1rem; background: rgba(6, 9, 20, .6); border: 1px solid var(--border); color: #fff; text-decoration: none;
    font-family: 'Space Grotesk'; font-size: 1.15rem; transition: transform .3s ease, border-color .3s ease, background .3s ease;
}
.contact-tile small { display: block; font-family: 'Inter'; font-size: .75rem; color: var(--muted); text-transform: uppercase; letter-spacing: .12em; }
.contact-tile > .bi-arrow-up-right { color: var(--muted); transition: transform .3s ease, color .3s ease; }
.contact-tile:hover { transform: translateX(6px); border-color: rgba(82, 113, 255, .45); background: rgba(6, 9, 20, .85); color: #fff; }
.contact-tile:hover > .bi-arrow-up-right { transform: translate(3px, -3px); color: var(--accent); }

/* Footer */
.footer { padding: 2.5rem 0; border-top: 1px solid var(--border); }
.footer a { color: var(--muted); font-size: 1.2rem; transition: color .25s; }
.footer a:hover { color: var(--accent); }
.footer .brand { font-size: 1.15rem; color: #fff; }

.to-top {
    position: fixed; right: 1.25rem; bottom: 1.25rem; width: 46px; height: 46px; border-radius: 50%; z-index: 1030;
    display: grid; place-items: center; background: var(--gradient); color: #fff; font-size: 1.2rem;
    opacity: 0; transform: translateY(20px); pointer-events: none; transition: opacity .3s ease, transform .3s ease;
}
.to-top.show { opacity: 1; transform: none; pointer-events: auto; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
    html { scroll-behavior: auto; }
}