#rx-calculadora {
    --rx-primary: #0d7377;
    --rx-primary-dark: #0a5a5d;
    --rx-primary-light: #e6f5f3;
    --rx-accent: #b45309;
    --rx-accent-light: #fef3e2;
    --rx-text: #1e293b;
    --rx-text-muted: #64748b;
    --rx-border: #dce7e5;
    --rx-bg: #f4faf9;
    --rx-white: #ffffff;
    --rx-radius: 16px;
    --rx-shadow: 0 4px 20px rgba(13, 115, 119, 0.08), 0 1px 3px rgba(13, 115, 119, 0.06);

    font-family: 'Rubik', Helvetica, Arial, sans-serif;
    color: var(--rx-text);
    max-width: 100%;
    margin: 2.5rem auto;
    padding: 2.25rem 2rem 2rem;
    background: var(--rx-white);
    border: 1px solid var(--rx-border);
    border-radius: var(--rx-radius);
    box-shadow: var(--rx-shadow);
    position: relative;
    overflow: hidden;
}

/* barra de assinatura no topo — remete a um traçado de pulso/monitor */
#rx-calculadora::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--rx-primary) 0%, #4fb3ac 50%, var(--rx-primary) 100%);
}

/* ---------- Cabeçalhos ---------- */
#rx-calculadora h2 {
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--rx-primary-dark);
    letter-spacing: -0.01em;
    margin: 0.25rem 0 0.5rem;
}

#rx-calculadora h3 {
    font-weight: 500;
    font-size: 1rem;
    color: var(--rx-text-muted);
    margin: 0.25rem 0;
}

#rx-calculadora h3.text-center.p-2 {
    background: var(--rx-accent-light);
    color: #92400e;
    border: 1px solid #f4d9ae;
    border-radius: 10px;
    padding: 0.65rem 0.9rem !important;
    font-size: 0.9rem;
    margin: 1.5rem 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#rx-calculadora h3.text-center.p-2::before {
    content: "⚠";
    font-size: 1rem;
    line-height: 1;
}

/* ---------- Campo: escolha do medicamento ---------- */
#rx-calculadora select#drug-select {
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    color: var(--rx-text);
    background-color: var(--rx-white);
    border: 1.5px solid var(--rx-border) !important;
    border-radius: 10px !important;
    padding: 0.7rem 2.25rem 0.7rem 0.9rem !important;
    margin-bottom: 1.25rem;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%230d7377' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    cursor: pointer;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

#rx-calculadora select#drug-select:hover {
    border-color: var(--rx-primary) !important;
}

#rx-calculadora select#drug-select:focus {
    outline: none;
    border-color: var(--rx-primary) !important;
    box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.15);
}

/* ---------- Campo: peso do paciente ---------- */
#rx-calculadora label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: rgb(0, 0, 0);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 1.5rem !important;
}

#rx-calculadora input#drug-weight {
    font-family: 'Inter', sans-serif;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--rx-primary-dark);
    border: 1.5px solid var(--rx-border) !important;
    border-radius: 10px !important;
    padding: 0.65rem 0.9rem !important;
    margin-top: 0.4rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

#rx-calculadora input#drug-weight:hover {
    border-color: var(--rx-primary) !important;
}

#rx-calculadora input#drug-weight:focus {
    outline: none;
    border-color: var(--rx-primary) !important;
    box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.15);
}

/* ---------- Bloco de resultado ---------- */
#rx-calculadora strong {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--rx-primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 1.75rem 0 0.85rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--rx-primary-light);
}

#rx-calculadora>div.text-sm,
#rx-calculadora>div:not(.result):not(.details) {
    font-size: 0.85rem;
    color: rgb(0, 0, 0);
    margin-top: 0.9rem;
}

#rx-calculadora .result {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--rx-primary-dark);
    background: var(--rx-primary-light);
    border: 1px solid #bfe4e1;
    border-radius: 10px;
    padding: 0.7rem 1rem;
    margin-top: 0.35rem;
    margin-bottom: 0.25rem;
}

/* destaque extra para a dose por toma, o número mais importante na prática */
#rx-calculadora #drug-per-dose {
    color: var(--rx-white);
    background: linear-gradient(135deg, var(--rx-primary) 0%, var(--rx-primary-dark) 100%);
    border: none;
    box-shadow: 0 4px 12px rgba(13, 115, 119, 0.25);
}

/* ---------- Painel de detalhes / explicação ---------- */
#rx-calculadora .details {
    white-space: pre-line;
    font-size: 0.85rem;
    line-height: 1.65;
    color: rgb(0, 0, 0);
    background: white;
    border: 1px solid var(--rx-border);
    border-left: 4px solid var(--rx-primary);
    border-radius: 10px;
    padding: 1rem 1.15rem;
    margin-top: 1.5rem !important;
}

/* ---------- Responsivo ---------- */
@media (max-width: 480px) {
    #rx-calculadora {
        padding: 1.5rem 1.25rem;
        border-radius: 12px;
    }

    #rx-calculadora h2 {
        font-size: 1.25rem;
    }

    #rx-calculadora .result {
        font-size: 1.2rem;
    }
}

/* ---------- Acessibilidade: foco visível para navegação por teclado ---------- */
#rx-calculadora select:focus-visible,
#rx-calculadora input:focus-visible {
    outline: 2px solid var(--rx-primary-dark);
    outline-offset: 2px;
}

/* ---------- Respeita preferência de movimento reduzido ---------- */
@media (prefers-reduced-motion: reduce) {
    #rx-calculadora * {
        transition: none !important;
    }
}