* {
    box-sizing: border-box;
}

body {
    margin: 0;

    font-family:
        Arial,
        Helvetica,
        sans-serif;

    background: #f4f6f8;
    color: #222;
}


/* =========================
   CABECERA
   ========================= */

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;

    padding: 22px 35px;

    background: #222;
    color: white;
}

.brand h1 {
    margin: 0;

    font-size: 38px;
    letter-spacing: 1px;
}

.brand p {
    margin: 5px 0 0;

    color: #d7d7d7;
}


/* =========================
   BOTÓN BIOTIME
   ========================= */

.header-actions {
    display: flex;
    align-items: center;
}

.btn-biotime {
    display: inline-block;

    padding: 12px 22px;

    background: #1976d2;
    color: white;

    text-decoration: none;
    font-weight: bold;

    border-radius: 8px;

    box-shadow:
        0 2px 6px
        rgba(0, 0, 0, 0.18);

    transition:
        background 0.2s ease,
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.btn-biotime:hover {
    background: #125aa3;

    transform: translateY(-2px);

    box-shadow:
        0 5px 12px
        rgba(0, 0, 0, 0.25);
}

/* =========================
   CONTENIDO
   ========================= */

.container {
    width: min(1200px, 92%);
    margin: 0 auto;

    padding: 40px 0;
}


/* =========================
   HERO
   ========================= */

.hero {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;

    margin-bottom: 35px;
}

.hero h2 {
    margin: 5px 0 10px;

    font-size: 34px;
}

.hero p {
    margin: 0;

    max-width: 650px;

    color: #555;

    font-size: 17px;
    line-height: 1.5;
}

.eyebrow {
    font-size: 14px;
    font-weight: bold;

    text-transform: uppercase;
    letter-spacing: 1px;

    color: #777;
}


/* =========================
   ESTADO
   ========================= */

.status-box {
    display: flex;
    align-items: center;
    gap: 10px;

    background: white;

    padding: 12px 18px;

    border-radius: 10px;

    box-shadow:
        0 2px 8px
        rgba(0, 0, 0, 0.08);

    white-space: nowrap;
}

.status-dot {
    width: 10px;
    height: 10px;

    border-radius: 50%;

    background: #2eaf62;
}


/* =========================
   TARJETAS
   ========================= */

.grid {
    display: grid;

    grid-template-columns:
        repeat(
            auto-fit,
            minmax(240px, 1fr)
        );

    gap: 20px;
}

.card {
    background: white;

    padding: 24px;

    border-radius: 12px;

    box-shadow:
        0 2px 8px
        rgba(0, 0, 0, 0.08);

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-3px);

    box-shadow:
        0 6px 18px
        rgba(0, 0, 0, 0.12);
}

.card h3 {
    margin-top: 0;
    margin-bottom: 12px;
}

.card p {
    margin-bottom: 0;

    color: #555;
    line-height: 1.5;
}


/* =========================
   FOOTER
   ========================= */

footer {
    padding: 20px;

    text-align: center;

    color: #777;

    font-size: 14px;
}


/* =========================
   WHATSAPP
   ========================= */

.whatsapp-float {
    position: fixed;

    right: 24px;
    bottom: 24px;

    width: 58px;
    height: 58px;

    display: flex;
    align-items: center;
    justify-content: center;

    background: #25d366;
    color: white;

    text-decoration: none;

    border-radius: 50%;

    box-shadow:
        0 4px 14px
        rgba(0, 0, 0, 0.25);

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.whatsapp-float:hover {
    transform: scale(1.08);

    box-shadow:
        0 6px 18px
        rgba(0, 0, 0, 0.30);
}

.whatsapp-icon {
    font-size: 28px;
}


/* =========================
   RESPONSIVE
   ========================= */

@media (max-width: 700px) {

    .topbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero {
        flex-direction: column;
        align-items: flex-start;
    }

    .status-box {
        width: 100%;
    }

    .btn-biotime {
        width: 100%;
        text-align: center;
    }
}