@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: #061420;
    --bg-mid: #0a2235;
    --bg-soft: #0d2d3f;
    --text-light: #eaf3f7;
    --text-muted: #a9c2cf;
    --teal: #2dd4bf;
    --teal-light: #5eead4;
    --blue: #60a5fa;
    --blue-deep: #1e40af;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
    width: 100%;
    overflow-x: hidden;
}

body {
    width: 100%;
}

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(160deg, var(--bg-deep) 0%, var(--bg-mid) 45%, var(--bg-soft) 100%);
    color: var(--text-light);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
}

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

#bg-layer {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    background: radial-gradient(circle at 20% 20%, rgba(13, 148, 166, 0.12), transparent 60%),
                radial-gradient(circle at 80% 70%, rgba(30, 64, 175, 0.18), transparent 55%);
    pointer-events: none;
}

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

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

nav {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 50;
    background: rgba(6, 20, 32, 0.35);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(94, 234, 212, 0.08);
    transition: background-color 0.25s ease, box-shadow 0.25s ease;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 32px;
    transition: padding 0.25s ease;
}

nav.nav-scrolled {
    background: rgba(6, 16, 26, 0.88);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

nav.nav-scrolled .nav-inner {
    padding: 12px 32px;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--text-light);
    transition: font-size 0.25s ease;
}

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

nav.nav-scrolled .logo { font-size: 1.2rem; }

.nav-link {
    display: inline-block;
    padding: 10px 22px;
    background: linear-gradient(135deg, var(--teal), var(--blue-deep));
    color: #ffffff;
    font-weight: 600;
    font-size: 0.92rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    white-space: nowrap;
    transition: transform 0.25s ease, box-shadow 0.25s ease, padding 0.25s ease, font-size 0.25s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(45, 212, 191, 0.35);
}

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

nav.nav-scrolled .nav-link { padding: 8px 18px; }

@media (max-width: 650px) {
    .nav-inner { padding: 16px 5%; }
    .logo { font-size: 1.15rem; }
    .nav-link { padding: 8px 14px; font-size: 0.8rem; }

    nav.nav-scrolled .nav-inner { padding: 10px 5%; }
    nav.nav-scrolled .logo { font-size: 1rem; }
    nav.nav-scrolled .nav-link { padding: 6px 12px; font-size: 0.75rem; }
}

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

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

.hero h1 {
    font-size: clamp(2rem, 6vw, 5rem);
    font-weight: 700;
    line-height: 1.15;
    background: linear-gradient(120deg, var(--text-light) 10%, var(--teal-light) 50%, var(--blue) 90%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    max-width: 680px;
    margin: 28px auto 0;
    color: var(--text-muted);
    font-size: 1.15rem;
}

@media (max-width: 650px) {
    .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: 6vh 24px 10vh;
}

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

.card {
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid rgba(94, 234, 212, 0.14);
    border-radius: 16px;
    padding: 38px;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(94, 234, 212, 0.4);
}

.card h3 {
    font-size: 1.25rem;
    color: var(--teal-light);
    margin-bottom: 14px;
}

.card p {
    color: #c2d4dc;
    font-size: 0.98rem;
    line-height: 1.6;
}

@media (max-width: 650px) {
    .cards-section { padding: 4vh 18px 8vh; }
    .card { padding: 28px; }
}

/* ---- Signal line (CTA) ---- */

.signal-line {
    position: relative;
    z-index: 2;
    padding: 6vh 24px 14vh;
    text-align: center;
}

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

.signal-status {
    color: var(--teal);
    font-weight: 600;
    letter-spacing: 1.5px;
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.signal-cta {
    display: inline-block;
    padding: 18px 48px;
    background: linear-gradient(135deg, var(--teal), var(--blue-deep));
    color: #ffffff;
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.signal-cta:hover,
.signal-cta:focus-visible {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 32px rgba(45, 212, 191, 0.4);
}

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

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

@media (max-width: 650px) {
    .signal-line { padding: 4vh 18px 10vh; }
    .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 -
   spacing and contrast live here instead. */

footer {
    position: relative;
    z-index: 2;
    background: rgba(6, 20, 32, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-top: 1px solid rgba(94, 234, 212, 0.1);
    padding: 24px 20px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

footer div {
    margin: 4px 0;
}

footer a {
    color: inherit;
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}