/* Fitness Calculators Suite - Neutral Minimal Style */
.fcs-calculator {
    max-width: 520px;
    margin: 22px auto;
    padding: 22px;
    border-radius: 12px;
    background: #ffffff;
    box-shadow: 0 6px 18px rgba(16,24,40,0.04);
    font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial;
    color: #0f172a;
    border: 1px solid rgba(15,23,42,0.04);
}

.fcs-calculator h2 {
    margin: 0 0 12px 0;
    font-size: 18px;
    font-weight: 600;
    text-align: left;
    color: #0f172a;
}

.fcs-input {
    width: 100%;
    padding: 10px 12px;
    margin: 8px 0 12px 0;
    border-radius: 8px;
    border: 1px solid #e6eef3;
    background: #fbfdfe;
    font-size: 14px;
    box-sizing: border-box;
}

.fcs-input:focus {
    outline: none;
    border-color: #cbd5e1;
    background: #ffffff;
}

.fcs-btn {
    display: inline-block;
    width: 100%;
    padding: 12px;
    margin-top: 6px;
    border-radius: 10px;
    border: none;
    background: #111827;
    color: #ffffff;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.18s ease;
}

.fcs-btn:hover { background: #0b1220; }

.fcs-result {
    margin-top: 12px;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    display: none;
}

/* Result color classes */
.fcs-underweight { background: #fff7ed; color: #b45309; }
.fcs-normal { background: #f0fdf4; color: #065f46; }
.fcs-overweight { background: #fffbeb; color: #92400e; }
.fcs-obese { background: #fff1f2; color: #9f1239; }

.fcs-footnote { margin-top: 10px; font-size: 12px; color: #6b7280; }

/* Responsive */
@media (max-width: 520px) {
    .fcs-calculator { padding: 16px; margin: 12px; }
}