/* ===========================================
   BMI Calculator - Tool Specific Styles
   =========================================== */

/* Tool Layout */
.bmi-box {
    max-width: 600px;
    margin: 0 auto;
}

/* --- Unit Toggle --- */
.bmi-unit-toggle {
    display: flex;
    margin-bottom: 25px;
    background: #f3f4f6;
    border-radius: 8px;
    padding: 5px;
}

.bmi-unit-toggle label {
    flex-grow: 1;
    text-align: center;
    padding: 10px 15px;
    cursor: pointer;
    font-weight: 600;
    color: #4b5563;
    transition: background 0.3s, color 0.3s;
    border-radius: 6px;
}

.bmi-unit-toggle input[type="radio"] {
    display: none;
}

.bmi-unit-toggle input[type="radio"]:checked + label {
    background: #10b981; /* Green highlight for active unit */
    color: white;
    box-shadow: 0 2px 5px rgba(16, 185, 129, 0.4);
}


/* --- Controls and Inputs --- */
.bmi-controls {
    background: #f0fdf4; /* Light Mint/Green BG */
    padding: 30px;
    border-radius: 12px;
    border: 1px solid #a7f3d0;
    margin-bottom: 30px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.bmi-input-row {
    display: grid;
    grid-template-columns: 1fr 1fr; /* Two columns: Height and Weight */
    gap: 20px;
}

.bmi-input-group {
    display: flex;
    flex-direction: column;
}

.bmi-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #047857;
    margin-bottom: 6px;
}

.bmi-input-addon {
    display: flex;
    align-items: center;
}

.bmi-input-addon .bmi-input {
    padding: 10px;
    border: 1px solid #34d399;
    border-radius: 0 6px 6px 0;
    font-size: 1.1rem;
    color: #1f2937;
    width: 100%;
    text-align: right;
    border-left: none;
}

.bmi-input-addon span {
    background-color: #d1fae5;
    border: 1px solid #34d399;
    border-right: none;
    padding: 10px;
    border-radius: 6px 0 0 6px;
    font-size: 1.1rem;
    color: #047857;
    width: 50px; /* Fixed width for unit display */
    text-align: center;
}

/* --- Results Summary --- */

.bmi-results-section {
    margin-top: 30px;
    text-align: center;
}

.bmi-summary {
    padding: 25px;
    background: #f0fdf4; 
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.bmi-result-label {
    font-size: 1rem;
    color: #047857;
    font-weight: 600;
    margin-bottom: 5px;
}

.bmi-score-value {
    font-size: 3rem;
    font-weight: 800;
    color: #10b981;
    line-height: 1.1;
    margin-bottom: 10px;
}

.bmi-category-text {
    font-size: 1.5rem;
    font-weight: 700;
    padding: 8px 15px;
    border-radius: 6px;
    display: inline-block;
}

/* Category Color Coding */
.category-underweight {
    background-color: #fcd34d; /* Yellow */
    color: #78350f; 
}
.category-healthy {
    background-color: #10b981; /* Green */
    color: white; 
}
.category-overweight {
    background-color: #fb923c; /* Orange */
    color: #7c2d12;
}
.category-obese {
    background-color: #ef4444; /* Red */
    color: white; 
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .bmi-input-row {
        grid-template-columns: 1fr; 
    }
    .bmi-score-value {
        font-size: 2.5rem;
    }
    .bmi-category-text {
        font-size: 1.2rem;
    }
}