@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: #081524;
    --bg-deep-2: #0b1f33;
    --blue-500: #3b82f6;
    --blue-400: #60a5fa;
    --cyan-400: #22d3ee;
    --green-400: #34d399;
    --green-500: #10b981;
    --text-primary: #f1f8fb;
    --text-muted: #a9c2d6;
    --surface: rgba(255, 255, 255, 0.04);
    --surface-border: rgba(255, 255, 255, 0.09);
    --shadow-color: rgba(3, 12, 22, 0.55);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-deep-2) 45%, var(--bg-deep) 100%);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

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

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

/* ---------- NAV ---------- */
nav {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 50;
    box-sizing: border-box;
    padding: 22px 0;
    background: rgba(8, 21, 36, 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(8, 21, 36, 0.86);
    box-shadow: 0 8px 24px var(--shadow-color);
}

@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;
    box-sizing: border-box;
}

.logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.01em;
    background: linear-gradient(90deg, var(--blue-400), var(--green-400));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    transition: font-size 250ms ease;
}

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

#buy_now_link {
    display: inline-block;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 26px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--blue-500), var(--green-500));
    color: #04121f;
    transition: padding 250ms ease, transform 180ms ease, box-shadow 180ms ease;
}

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

#buy_now_link:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(52, 211, 153, 0.35);
}

#buy_now_link:focus-visible {
    outline: 2px solid var(--cyan-400);
    outline-offset: 3px;
}

/* ---------- HERO ---------- */
.hero {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 13vh 24px 10vh;
    max-width: 900px;
    margin: 0 auto;
}

.hero 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;
    background: linear-gradient(100deg, #eafff6 0%, var(--blue-400) 45%, var(--green-400) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    margin: 28px auto 0;
    max-width: 680px;
    font-size: clamp(1rem, 1.6vw, 1.2rem);
    line-height: 1.6;
    color: var(--text-muted);
}

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

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

.card {
    background: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: 18px;
    padding: 38px 36px;
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--shadow-color);
    border-color: rgba(52, 211, 153, 0.35);
}

.card-icon {
    width: 52px;
    height: 52px;
    margin-bottom: 22px;
}

.card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 1.25rem;
    margin: 0 0 14px;
    color: var(--text-primary);
}

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

/* ---------- CTA ---------- */
.cta-section {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 8vh 24px 14vh;
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.signal-status {
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--green-400);
    margin: 0 0 20px;
}

.signal-cta {
    display: inline-block;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.15rem;
    padding: 18px 48px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--blue-500), var(--cyan-400), var(--green-500));
    color: #04121f;
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.signal-cta:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 16px 32px rgba(34, 211, 238, 0.3);
}

.signal-cta:focus-visible {
    outline: 2px solid var(--cyan-400);
    outline-offset: 4px;
}

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

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

footer {
    position: relative;
    z-index: 2;
    padding: 24px 20px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    background: rgba(8, 21, 36, 0.6);
}

footer div {
    margin: 4px 0;
}

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

@media (max-width: 480px) {
    .nav-inner {
        padding: 0 18px;
    }

    .logo {
        font-size: 1.2rem;
    }

    #buy_now_link {
        padding: 9px 16px;
        font-size: 0.82rem;
    }

    nav.nav-scrolled .nav-inner {
        padding: 0 18px;
    }

    nav.nav-scrolled .logo {
        font-size: 1.05rem;
    }

    nav.nav-scrolled #buy_now_link {
        padding: 7px 14px;
        font-size: 0.76rem;
    }

    .hero {
        padding: 11vh 18px 7vh;
    }

    .hero p {
        font-size: 0.95rem;
    }

    .cards-section {
        padding: 2vh 18px 7vh;
    }

    .card {
        padding: 30px 26px;
    }

    .signal-cta {
        padding: 15px 34px;
        font-size: 1rem;
    }
}

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

    * {
        transition: none !important;
    }
}