@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --bg: #f4f9fd;
    --bg-soft: #eaf3fb;
    --surface: #ffffff;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --ink: #0f1e3a;
    --muted: #4b5d78;
    --border: #d9e6f5;
    --shadow: rgba(15, 42, 90, 0.10);
}

* {
    box-sizing: border-box;
}

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

body, html {
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.5;
}

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

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

#flow-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    background: linear-gradient(180deg, #f4f9fd 0%, #eef5fc 45%, #f7fbfe 100%);
}

/* ---- Layout helpers ---- */

.wrap {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 32px;
}

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

nav {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    box-sizing: border-box;
    background: rgba(244, 249, 253, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(217, 230, 245, 0.6);
    transition: background 250ms ease, box-shadow 250ms ease;
}

nav .nav-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 22px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: padding 250ms ease;
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--ink);
    transition: font-size 250ms ease;
}

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

.nav-link {
    display: inline-block;
    background: var(--primary);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 24px;
    border-radius: 8px;
    transition: background 200ms ease, transform 200ms ease, padding 250ms ease, font-size 250ms ease, box-shadow 200ms ease;
}

.nav-link:hover,
.nav-link:focus-visible {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
}

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

nav.nav-scrolled {
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 4px 24px var(--shadow);
}

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

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

nav.nav-scrolled .nav-link {
    padding: 9px 18px;
    font-size: 0.88rem;
}

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

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

.hero {
    position: relative;
    z-index: 2;
    padding: 13vh 32px 8vh;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 6vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.12;
    color: var(--ink);
    max-width: 920px;
    margin: 0 auto 26px;
}

.hero h1 .accent {
    color: var(--primary);
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    color: var(--primary-dark);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 8px 16px;
    border-radius: 999px;
    margin-bottom: 28px;
}

.hero-badge .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

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

.cards-section {
    position: relative;
    z-index: 2;
    padding: 6vh 32px 10vh;
}

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

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 38px;
    transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px var(--shadow);
    border-color: var(--primary-light);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--bg-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 22px;
    color: var(--primary);
}

.card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--ink);
}

.card p {
    color: var(--muted);
    font-size: 0.98rem;
    line-height: 1.6;
    margin: 0;
}

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

.signal-line {
    position: relative;
    z-index: 2;
    padding: 10vh 32px 14vh;
    text-align: center;
}

.signal-inner {
    max-width: 620px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.signal-status {
    color: var(--primary-dark);
    font-weight: 700;
    letter-spacing: 0.08em;
    font-size: 0.85rem;
    margin: 0 0 22px;
}

.signal-cta {
    display: inline-block;
    background: var(--primary);
    color: #ffffff;
    font-weight: 700;
    font-size: 1.1rem;
    padding: 20px 48px;
    border-radius: 12px;
    box-shadow: 0 14px 30px rgba(37, 99, 235, 0.3);
    transition: background 200ms ease, transform 200ms ease, box-shadow 200ms ease;
    margin-bottom: 20px;
}

.signal-cta:hover,
.signal-cta:focus-visible {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 18px 38px rgba(37, 99, 235, 0.4);
}

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

.signal-sub {
    color: var(--muted);
    font-size: 0.95rem;
    margin: 0;
}

/* ---- Footer ---- */
/* Footer markup itself is injected via SSI and shouldn't be edited per-domain -
   spacing/contrast lives here instead. */

footer {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 28px 32px;
    background: var(--surface);
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.85rem;
}

footer div {
    margin: 4px 0;
}

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

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

@media (prefers-reduced-motion: reduce) {
    * {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* ---- Mobile ---- */

@media (max-width: 480px) {
    .wrap,
    nav .nav-inner,
    .hero,
    .cards-section,
    .signal-line {
        padding-left: 18px;
        padding-right: 18px;
    }

    nav .nav-inner {
        padding-top: 16px;
        padding-bottom: 16px;
    }

    .logo {
        font-size: 1.1rem;
    }

    .nav-link {
        padding: 9px 16px;
        font-size: 0.82rem;
    }

    nav.nav-scrolled .nav-inner {
        padding-top: 10px;
        padding-bottom: 10px;
    }

    nav.nav-scrolled .logo {
        font-size: 0.95rem;
    }

    nav.nav-scrolled .nav-link {
        padding: 7px 12px;
        font-size: 0.72rem;
    }

    .hero {
        padding-top: 11vh;
        padding-bottom: 6vh;
    }

    .hero p {
        font-size: 1rem;
    }

    .card {
        padding: 28px;
    }

    .signal-cta {
        padding: 16px 32px;
        font-size: 1rem;
        width: 100%;
    }
}