@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: #050b1a;
    --bg-mid: #0a1830;
    --bg-panel: #0d1f3c;
    --bg-panel-light: #11294d;
    --green: #2dffb0;
    --green-dim: #1fd79a;
    --blue-accent: #3aa0ff;
    --text-main: #eaf2ff;
    --text-muted: #b7c7e0;
    --border: rgba(255, 255, 255, 0.08);
}

* { box-sizing: border-box; }

html {
    overflow-x: hidden;
}

body, html {
    margin: 0; padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-main);
    min-height: 100vh;
}

body {
    background: var(--bg-deep);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

.bg-base {
    position: fixed;
    inset: 0;
    z-index: 0;
    background: radial-gradient(ellipse at 20% -10%, #123059 0%, var(--bg-mid) 45%, var(--bg-deep) 100%);
}

#cascadeCanvas {
    position: fixed;
    inset: 0;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: block;
    pointer-events: none;
}

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

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

nav {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 100;
    background: rgba(5, 11, 26, 0.35);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: background 250ms ease, box-shadow 250ms ease, border-color 250ms ease;
}

nav.nav-scrolled {
    background: rgba(5, 11, 26, 0.86);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 32px;
    transition: padding 250ms ease;
}

nav.nav-scrolled .nav-inner {
    padding: 13px 32px;
}

.logo {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-main);
    transition: font-size 250ms ease;
    white-space: nowrap;
}

nav.nav-scrolled .logo { font-size: 1.15rem; }

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

.nav-link {
    display: inline-block;
    padding: 11px 24px;
    border-radius: 8px;
    background: var(--green);
    color: #07131f;
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    border: 1px solid transparent;
    transition: padding 250ms ease, font-size 250ms ease, transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

nav.nav-scrolled .nav-link {
    padding: 8px 18px;
    font-size: 0.88rem;
}

.nav-link:hover {
    background: var(--green-dim);
    box-shadow: 0 0 0 3px rgba(45, 255, 176, 0.2);
    transform: translateY(-1px);
}

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

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

@media (max-width: 480px) {
    .nav-inner { padding: 16px 18px; }
    .logo { font-size: 1.1rem; }
    .nav-link { padding: 8px 14px; font-size: 0.8rem; }

    nav.nav-scrolled .nav-inner { padding: 10px 18px; }
    nav.nav-scrolled .logo { font-size: 0.95rem; }
    nav.nav-scrolled .nav-link { padding: 6px 12px; font-size: 0.72rem; }
}

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

.hero {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
    padding: 12vh 24px 8vh;
    text-align: center;
}

.eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--green);
    border: 1px solid rgba(45, 255, 176, 0.35);
    background: rgba(45, 255, 176, 0.06);
    padding: 6px 14px;
    border-radius: 20px;
    margin-bottom: 28px;
}

.hero h1 {
    font-size: clamp(2rem, 6vw, 5rem);
    line-height: 1.12;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0;
    background: linear-gradient(120deg, #eaf2ff 20%, var(--blue-accent) 55%, var(--green) 85%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

@media (max-width: 600px) {
    .hero { padding: 10vh 18px 6vh; }
    .hero p { font-size: 1rem; }
}

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

.cards-section {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 4vh 24px 10vh;
}

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

.card {
    background: linear-gradient(160deg, var(--bg-panel) 0%, var(--bg-panel-light) 100%);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 38px;
    text-align: left;
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(45, 255, 176, 0.15);
    border-color: rgba(45, 255, 176, 0.3);
}

.card-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(45, 255, 176, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--green);
    font-size: 1.3rem;
}

.card h3 {
    font-size: 1.2rem;
    margin: 0 0 14px;
    color: var(--text-main);
}

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

@media (max-width: 600px) {
    .cards-section { padding: 2vh 18px 7vh; }
    .card { padding: 28px; }
}

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

/* ---- Signal Line (CTA) ---- */

.signal-line {
    position: relative;
    z-index: 2;
    padding: 8vh 24px 14vh;
    text-align: center;
}

.signal-inner {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.signal-status {
    font-size: 0.85rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--green);
    font-weight: 600;
    margin: 0 0 22px;
}

.signal-cta {
    display: inline-block;
    padding: 18px 44px;
    border-radius: 10px;
    background: linear-gradient(120deg, var(--green) 0%, var(--blue-accent) 100%);
    color: #061320;
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.01em;
    box-shadow: 0 10px 30px rgba(45, 255, 176, 0.18);
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.signal-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 40px rgba(45, 255, 176, 0.3);
}

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

.signal-sub {
    margin: 20px 0 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

@media (max-width: 600px) {
    .signal-line { padding: 6vh 18px 10vh; }
    .signal-cta { padding: 16px 32px; font-size: 1rem; width: 100%; }
}

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

/* ---- Footer ---- */
/* Footer markup itself is injected via SSI and shouldn't be edited per-domain -
   spacing lives here instead, so nothing needs to rely on Bootstrap margin utilities. */

footer {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 24px 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
    background: rgba(5, 11, 26, 0.55);
    border-top: 1px solid var(--border);
}

footer div {
    margin: 4px 0;
}