@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&display=swap');

:root {
    --bg-deep: #050a13;
    --bg-navy: #0a1a2f;
    --blue: #4f8cff;
    --blue-soft: #7fb0ff;
    --green: #2fd9a8;
    --green-soft: #7ff0cf;
    --text-primary: #edf3fb;
    --text-muted: #a7b8cf;
    --border-soft: rgba(255, 255, 255, 0.09);
    --card-bg: rgba(255, 255, 255, 0.05);
    --on-accent: #04101c;
}

* { box-sizing: border-box; }

body, html {
    margin: 0; padding: 0;
    font-family: 'Inter', sans-serif;
    background: var(--bg-deep);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    min-height: 100vh;
}

html { scroll-behavior: smooth; }

a { text-decoration: none; color: inherit; }

/* ---- Background ---- */

.backdrop {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0;
    background:
        radial-gradient(ellipse 80% 55% at 18% 12%, rgba(47, 217, 168, 0.14), transparent 60%),
        radial-gradient(ellipse 70% 60% at 85% 20%, rgba(79, 140, 255, 0.16), transparent 60%),
        radial-gradient(ellipse 90% 70% at 50% 100%, rgba(13, 33, 56, 0.9), transparent 70%),
        linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-navy) 55%, var(--bg-deep) 100%);
}

#helix-canvas {
    position: fixed; top: 0; left: 0;
    width: 100vw; height: 100vh;
    z-index: 1;
    pointer-events: none;
    display: block;
}

/* ---- Nav ---- */

nav {
    display: flex; justify-content: space-between; align-items: center;
    padding: 18px 6vw;
    background: rgba(5, 10, 19, 0.55);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-soft);
    position: fixed; top: 0; left: 0; right: 0; z-index: 50;
}

.logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700; font-size: 1.3rem;
    letter-spacing: 0.01em;
    display: inline-flex; align-items: baseline; gap: 2px;
}

.logo .g-part {
    background: linear-gradient(90deg, var(--blue-soft), var(--blue));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}

.logo .l-part {
    background: linear-gradient(90deg, var(--green), var(--green-soft));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}

.logo .domain-ext {
    color: var(--text-muted); font-weight: 500; font-size: 1rem; margin-left: 1px;
}

.nav-link {
    display: inline-flex; align-items: center;
    padding: 10px 22px; border-radius: 999px;
    background: linear-gradient(90deg, var(--blue), var(--green));
    color: var(--on-accent);
    font-weight: 600; font-size: 0.92rem; letter-spacing: 0.01em;
    box-shadow: 0 4px 18px rgba(47, 217, 168, 0.18);
    transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
    white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 8px 26px rgba(47, 217, 168, 0.32);
    filter: brightness(1.06);
}

.nav-link:focus-visible {
    outline: 2px solid var(--green-soft);
    outline-offset: 3px;
}

@media (max-width: 650px) {
    nav { padding: 14px 5vw; }
    .logo { font-size: 1.1rem; }
    .nav-link { padding: 8px 16px; font-size: 0.82rem; }
}

/* ---- Main content layer ---- */

main {
    position: relative;
    z-index: 2;
}

/* ---- Hero ---- */

.hero {
    position: relative; z-index: 2;
    max-width: 1200px; margin: 0 auto;
    padding: 18vh 20px 8vh;
    text-align: center;
    display: flex; flex-direction: column; align-items: center;
}

.hero-eyebrow {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.82rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--green-soft);
    margin-bottom: 22px;
    opacity: 0.9;
}

.brand-h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(2rem, 6vw, 5rem);
    line-height: 1.12;
    letter-spacing: -0.01em;
    margin: 0;
    max-width: 16ch;
}

.brand-h1 .line-brand {
    display: block;
    background: linear-gradient(90deg, var(--blue-soft) 0%, var(--green-soft) 100%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}

.brand-h1 .line-tagline {
    display: block;
    color: var(--text-primary);
    font-size: clamp(1.4rem, 3.4vw, 2.6rem);
    margin-top: 0.35em;
}

.hero-sub {
    margin: 28px auto 0;
    max-width: 680px;
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.7;
}

@media (max-width: 600px) {
    .hero { padding-top: 20vh; }
}

/* ---- Cards ---- */

.cards-section {
    position: relative; z-index: 2;
    padding: 6vh 5% 10vh;
}

.cards-heading {
    text-align: center;
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1.4rem, 2.6vw, 2rem);
    color: var(--text-primary);
    margin: 0 0 48px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-soft);
    border-radius: 18px;
    padding: 38px;
    text-align: left;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.card:hover {
    transform: translateY(-8px);
    border-color: rgba(127, 240, 207, 0.35);
    box-shadow: 0 18px 40px rgba(4, 12, 22, 0.55);
}

.card .icon {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--blue), var(--green));
    margin-bottom: 22px;
    display: flex; align-items: center; justify-content: center;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    color: var(--on-accent);
}

.card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.2rem;
    color: var(--text-primary);
    margin: 0 0 14px;
}

.card p {
    color: var(--text-muted);
    font-size: 0.98rem;
    line-height: 1.65;
    margin: 0;
}

@media (max-width: 600px) {
    .card { padding: 28px; }
}

/* ---- Signal Line ---- */

.signal-line {
    position: relative; z-index: 2;
    padding: 10vh 20px 16vh;
    text-align: center;
}

.signal-inner {
    max-width: 600px; margin: 0 auto;
    display: flex; flex-direction: column; align-items: center; gap: 22px;
}

.signal-status {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--green-soft);
    margin: 0;
}

.signal-cta {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 18px 48px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--blue), var(--green));
    color: var(--on-accent);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.01em;
    box-shadow: 0 10px 32px rgba(47, 217, 168, 0.28);
    transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.signal-cta:hover,
.signal-cta:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 16px 42px rgba(47, 217, 168, 0.4);
    filter: brightness(1.06);
}

.signal-cta:focus-visible {
    outline: 2px solid var(--green-soft);
    outline-offset: 4px;
}

.signal-sub {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

@media (max-width: 600px) {
    .signal-cta { padding: 16px 32px; font-size: 1rem; width: 100%; }
}

/* ---- Footer ---- */
/* Footer markup itself is injected via SSI and shouldn't be edited per-domain -
   contrast, spacing, and stacking above the fixed backdrop/canvas live here instead. */

footer {
    position: relative;
    z-index: 2;
    padding: 24px 20px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    background: rgba(5, 10, 19, 0.55);
    border-top: 1px solid var(--border-soft);
}

footer div {
    margin: 4px 0;
}

/* ---- Reduced motion ---- */

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }

    * {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}