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

:root {
    --bg: #F5F5F5;
    --ink: #212121;
    --muted: #9E9E9E;
    --orange: #FF5722;
    --orange-dark: #E64A19;
    --blue: #03A9F4;
    --blue-dark: #0288D1;
}

* { box-sizing: border-box; }

body, html {
    margin: 0; padding: 0;
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg);
    color: var(--ink);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ── Nav ────────────────────────────────────────────────────────── */

nav {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 40px;
    position: sticky; top: 0; z-index: 10;
    background: rgba(245, 245, 245, 0.85);
    backdrop-filter: blur(10px);
}

.logo {
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem; font-weight: 700;
    color: var(--orange);
}

.nav-link {
    background-color: var(--orange);
    color: #FFF;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    font-size: 0.9rem;
    transition: background-color 0.3s;
}

.nav-link:hover, .nav-link:focus { background-color: var(--orange-dark); }

@media (max-width: 650px) {
    nav { padding: 20px; }
    .nav-link { padding: 8px 16px; }
}

/* ── Hero ───────────────────────────────────────────────────────── */

main {
    position: relative;
    z-index: 10;
}

.hero {
    max-width: 1200px; margin: 0 auto;
    padding: 14vh 20px 0;
    text-align: center;
}

.hero-subtitle {
    font-family: 'Poppins', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--orange);
    margin: 0 0 16px;
}

.brand-h1 {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(2rem, 6vw, 5rem);
    font-weight: 700;
    line-height: 1.15;
    margin: 0 0 24px;
    color: var(--ink);
}

.hero-tagline {
    max-width: 680px; margin: 0 auto;
    color: var(--muted);
    line-height: 1.6;
}

/* ── Cards ──────────────────────────────────────────────────────── */

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    text-align: left;
    padding: 60px 40px;
}

.card {
    background-color: #FFF;
    padding: 35px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.card:hover { transform: translateY(-10px); }

.card-label {
    font-size: 0.75rem;
    letter-spacing: 1px;
    color: var(--muted);
    margin-bottom: 10px;
    display: block;
}

.card h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.25rem;
    margin: 0 0 15px;
    color: var(--orange);
}

.card p { color: var(--ink); margin: 0; line-height: 1.5; }

@media (max-width: 600px) {
    .grid { padding: 40px 20px; }
    .card { padding: 30px 24px; }
}

/* ── Signal Line ────────────────────────────────────────────────── */

.signal-line {
    padding: 40px 20px 80px;
    text-align: center;
    position: relative; z-index: 10;
}

.signal-inner { max-width: 600px; margin: 0 auto; }

.signal-status {
    font-size: 0.9rem; letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 20px;
}

.signal-cta {
    display: inline-block;
    background-color: var(--blue);
    color: #FFF;
    padding: 14px 32px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 700;
    transition: background-color 0.3s;
}

.signal-cta:hover, .signal-cta:focus { background-color: var(--blue-dark); }

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

@media (max-width: 768px) {
    .grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .signal-cta { padding: 10px 20px; }
}