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

:root {
    --bg-deep: #040910;
    --bg-blue: #071a30;
    --bg-green: #052a24;
    --blue-1: #1a5bff;
    --blue-2: #3fd6ff;
    --green-1: #16d9a3;
    --green-2: #0ea387;
    --text-light: #f0f5fa;
    --text-muted: #b7cada;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.12);
}

* { box-sizing: border-box; }

html {
    overflow-x: hidden;
}

body {
    margin: 0; padding: 0;
    background:
        radial-gradient(1200px 800px at 15% 0%, rgba(26, 91, 255, 0.18), transparent 60%),
        radial-gradient(1000px 700px at 90% 20%, rgba(22, 217, 163, 0.14), transparent 55%),
        linear-gradient(160deg, var(--bg-deep) 0%, var(--bg-blue) 45%, var(--bg-green) 100%);
    font-family: 'Inter', sans-serif;
    color: var(--text-light);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 { font-family: 'Space Grotesk', sans-serif; }

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

#wave-canvas {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
    display: block;
}

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

nav {
    position: sticky; top: 0; left: 0; width: 100%; z-index: 100;
    box-sizing: border-box;
    padding: 22px 0;
    background: rgba(5, 12, 22, 0.35);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: padding 250ms ease, background 250ms ease, box-shadow 250ms ease;
}

nav.nav-scrolled {
    padding: 12px 0;
    background: rgba(4, 9, 16, 0.86);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}

@media (prefers-reduced-motion: reduce) {
    nav { transition: none; }
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700; font-size: 1.5rem;
    letter-spacing: 0.01em;
    color: var(--text-light);
    transition: font-size 250ms ease;
}

nav.nav-scrolled .logo { font-size: 1.25rem; }

.logo span { color: var(--green-1); }

.nav-link {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 999px;
    background: linear-gradient(120deg, var(--blue-1), var(--green-1));
    color: #04101c;
    font-weight: 600; font-size: 0.95rem;
    text-decoration: none;
    white-space: nowrap;
    transition: padding 250ms ease, transform 180ms ease, box-shadow 180ms ease, font-size 250ms ease;
}

nav.nav-scrolled .nav-link { padding: 9px 20px; font-size: 0.88rem; }

.nav-link:hover,
.nav-link:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(22, 217, 163, 0.35);
}

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

@media (max-width: 650px) {
    .nav-inner { padding: 0 18px; }
    .logo { font-size: 1.15rem; }
    .nav-link { padding: 9px 16px; font-size: 0.82rem; }

    nav.nav-scrolled .logo { font-size: 1rem; }
    nav.nav-scrolled .nav-link { padding: 7px 14px; font-size: 0.75rem; }
}

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

.hero {
    position: relative; z-index: 2;
    padding: 13vh 32px 10vh;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.brand-h1 {
    font-size: clamp(2rem, 6vw, 5rem);
    font-weight: 700; margin: 0;
    line-height: 1.08;
    letter-spacing: -0.01em;
    background: linear-gradient(100deg, var(--text-light) 35%, var(--green-1) 70%, var(--blue-2) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-tagline {
    margin: 28px auto 0;
    max-width: 680px;
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-muted);
}

@media (max-width: 480px) {
    .hero { padding: 11vh 18px 7vh; }
    .hero-tagline { font-size: 1rem; }
}

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

.cards-section {
    position: relative; z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 4vh 32px 10vh;
}

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

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 38px;
    text-align: left;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.card:hover {
    transform: translateY(-8px);
    border-color: rgba(22, 217, 163, 0.4);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.card h3 {
    font-size: 1.25rem; font-weight: 600;
    margin: 0 0 14px;
    color: var(--green-1);
}

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

@media (max-width: 480px) {
    .cards-section { padding: 3vh 18px 7vh; }
    .card { padding: 28px; }
}

@media (prefers-reduced-motion: reduce) {
    .card { transition: none; }
}

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

.signal-line {
    position: relative; z-index: 2;
    text-align: center;
    padding: 8vh 32px 14vh;
}

.signal-inner {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.signal-status {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--green-1);
    margin-bottom: 20px;
}

.signal-cta {
    display: inline-block;
    padding: 20px 48px;
    border-radius: 999px;
    background: linear-gradient(120deg, var(--blue-1), var(--green-1));
    color: #04101c;
    font-weight: 700; font-size: 1.1rem;
    letter-spacing: 0.01em;
    text-decoration: none;
    text-transform: none;
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.signal-cta:hover,
.signal-cta:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(22, 217, 163, 0.4);
}

.signal-cta:focus-visible {
    outline: 2px solid var(--blue-2);
    outline-offset: 3px;
}

.signal-sub {
    margin-top: 22px;
    font-size: 0.92rem;
    color: var(--text-muted);
}

@media (max-width: 480px) {
    .signal-line { padding: 6vh 18px 10vh; }
    .signal-cta { padding: 16px 32px; font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
    .nav-link, .signal-cta { transition: none; }
}

/* ---- Footer ---- */
/* Footer markup itself is injected via SSI and shouldn't be edited per-domain -
   spacing and contrast live here instead so it stays readable over the canvas. */

footer {
    position: relative; z-index: 2;
    padding: 24px 20px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    background: rgba(4, 9, 16, 0.45);
}

footer div {
    margin: 4px 0;
}

footer a {
    color: var(--text-light);
}

footer a:hover {
    color: var(--green-1);
}