@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;700;800&display=swap');

:root {
    --bg: #f0f7ff;
    --oxy-glow: #00d2ff;
    --deep-oxy: #0072ff;
    --text-main: #0a192f;
    --text-dim: #4a5e7b;
    --glass: rgba(255, 255, 255, 0.7);
    --border: rgba(0, 114, 255, 0.15);
}

body, html {
    margin: 0;
    padding: 0;
    background-color: var(--bg) !important;
    color: var(--text-main) !important;
    font-family: 'JetBrains Mono', monospace !important;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ATMOSPHERIC O2 ANIMATION */
.atmosphere {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(circle at 50% -20%, #ffffff 0%, var(--bg) 100%);
}

.molecule {
    position: absolute;
    border: 1.5px solid var(--oxy-glow);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(4px);
    box-shadow: 0 0 15px rgba(0, 210, 255, 0.4);
    animation: floatO2 10s infinite ease-in-out;
    opacity: 0.8;
}

@keyframes floatO2 {
    0%   { transform: translateY(100vh) translateX(0) scale(1);        opacity: 0; }
    20%  { opacity: 0.8; }
    50%  { transform: translateY(40vh) translateX(30px) scale(1.05); }
    80%  { opacity: 0.8; }
    100% { transform: translateY(-10vh) translateX(60px) scale(1.2);   opacity: 0; }
}

.oxy-nav, main, footer, .site-footer {
    position: relative;
    z-index: 1;
}

/* NAVIGATION */
.oxy-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 6%;
    background: var(--glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: 6px;
    color: var(--deep-oxy);
    text-transform: uppercase;
}

.nav-cta {
    text-decoration: none;
    color: var(--deep-oxy);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 12px 28px;
    border-radius: 50px;
    border: 2px solid var(--deep-oxy);
    transition: 0.4s;
    letter-spacing: 1px;
}

.nav-cta:hover {
    background: var(--deep-oxy);
    color: #ffffff !important;
    box-shadow: 0 0 20px rgba(0, 114, 255, 0.3);
}

/* HERO SECTION */
.hero {
    padding: 60px 6% 100px 6%;
    max-width: 1000px;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    background: rgba(0, 210, 255, 0.1);
    color: var(--deep-oxy);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 30px;
    border: 1px solid rgba(0, 114, 255, 0.15);
}

.status-pill::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--oxy-glow);
    border-radius: 50%;
    margin-right: 10px;
    flex-shrink: 0;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%   { transform: scale(1);   box-shadow: 0 0 0 0    rgba(0, 210, 255, 0.7); }
    70%  { transform: scale(1.2); box-shadow: 0 0 0 10px rgba(0, 210, 255, 0); }
    100% { transform: scale(1);   box-shadow: 0 0 0 0    rgba(0, 210, 255, 0); }
}

h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem) !important;
    font-weight: 400 !important;
    margin: 0 !important;
    letter-spacing: -3px !important;
    line-height: 1 !important;
    color: var(--text-main) !important;
    background: none !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: var(--text-main) !important;
}

.hero-desc {
    margin-top: 40px;
    max-width: 580px;
    color: var(--text-dim);
    font-size: 1.15rem;
    line-height: 1.7;
}

/* NODE GRID */
.node-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    padding: 40px 6% 80px 6%;
}

.node {
    background: var(--glass);
    border: 1px solid var(--border);
    padding: 30px 30px;
    border-radius: 24px;
    backdrop-filter: blur(10px);
    transition: transform 0.5s cubic-bezier(0.2, 1, 0.2, 1),
                background 0.5s, border-color 0.5s, box-shadow 0.5s;
}

.node:hover {
    transform: translateY(-10px);
    background: #ffffff;
    border-color: var(--oxy-glow);
    box-shadow: 0 20px 40px rgba(0, 114, 255, 0.08);
}

.node-id {
    font-size: 0.75rem;
    color: var(--oxy-glow);
    margin-bottom: 25px;
    display: block;
    font-weight: 700;
}

h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0 0 15px 0;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-main);
}

p {
    font-size: 1rem;
    color: var(--text-dim);
    margin: 0;
}

/* FOOTER / SHARED LAYOUT OVERRIDES */
footer, .footer, .site-footer {
    border-top: 1px solid var(--border) !important;
    background: transparent !important;
    color: var(--text-dim) !important;
}

footer a, .footer a, .site-footer a {
    color: var(--text-dim) !important;
}

/* NAV OVERRIDES */
nav, .navbar, header {
    background: var(--glass) !important;
    backdrop-filter: blur(20px) !important;
    border-bottom: 1px solid var(--border) !important;
}

nav a, .navbar-brand, .nav-link {
    color: var(--deep-oxy) !important;
}

/* ── Signal Line ─────────────────────────────────── */
.signal-line {
    padding: 0px 8% 120px;
    text-align: center;
    position: relative;
    z-index: 1;
    /* background: rgba(240, 247, 255, 0.8);
    border-top: 1px solid var(--border); */
}
.signal-inner { max-width: 600px; margin: 0 auto; }
.signal-status {
    font-size: 0.7rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--deep-oxy);
    font-weight: 900;
    opacity: 0.9;
    margin-bottom: 30px;
}
.signal-cta {
    display: inline-block;
    color: var(--deep-oxy);
    border: 2px solid var(--deep-oxy);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 900;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-size: 0.75rem;
    padding: 14px 32px;
    transition: 0.4s;
}
.signal-cta:hover {
    background: var(--deep-oxy);
    color: #ffffff;
    box-shadow: 0 0 20px rgba(0, 114, 255, 0.3);
}
.signal-sub {
    margin-top: 20px;
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-dim);
}