/* Calculator Page Styles */
.calculator-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.calculator-header {
    text-align: center;
    margin-bottom: 40px;
}

.calculator-header h1 {
    font-size: 2.5rem;
    color: var(--charcoal);
    margin-bottom: 10px;
}

.calculator-header p {
    font-size: 1.1rem;
    color: var(--text-medium);
}

/* Calculator Card */
.calculator-card {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin-bottom: 30px;
}

/* Form Sections */
.form-section {
    margin-bottom: 35px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--light-gray);
}

.form-section:last-of-type {
    border-bottom: none;
}

.form-section h3 {
    color: var(--charcoal);
    font-size: 1.4rem;
    margin-bottom: 20px;
}

/* Form Groups */
.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--charcoal);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.optional {
    font-weight: 400;
    color: var(--text-light);
    font-size: 0.85rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--persian-green);
}

.input-with-unit {
    display: flex;
    gap: 10px;
}

.input-with-unit input {
    flex: 1;
}

.input-with-unit select {
    width: 80px;
}

.form-help {
    display: block;
    margin-top: 6px;
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Calculate Button */
.btn-calculate {
    width: 100%;
    padding: 16px 32px;
    background: var(--persian-green);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-calculate:hover {
    background: #248178;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(42, 157, 143, 0.3);
}

/* Results Container */
.results-container {
    margin-top: 40px;
}

.results-card {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.results-card h2 {
    color: var(--charcoal);
    font-size: 2rem;
    margin-bottom: 25px;
    text-align: center;
}

/* Calculation Steps */
.calculation-steps {
    background: var(--light-gray);
    border-left: 4px solid var(--persian-green);
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 8px;
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--text-medium);
}

.calculation-steps strong {
    color: var(--charcoal);
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.result-box {
    background: var(--light-gray);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    border: 3px solid transparent;
    transition: all 0.3s;
}

.result-box:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.result-box.maintenance {
    border-color: var(--persian-green);
}

.result-box.fat-loss {
    border-color: var(--burnt-sienna);
}

.result-box.muscle-gain {
    border-color: var(--sandy-brown);
}

.result-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-medium);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--charcoal);
    margin-bottom: 8px;
}

.result-description {
    font-size: 0.85rem;
    color: var(--text-light);
}

.results-note {
    background: #fff3cd;
    border-left: 4px solid var(--maize-crayola);
    padding: 15px 20px;
    border-radius: 6px;
    font-size: 0.9rem;
    color: var(--text-dark);
    line-height: 1.6;
}

.results-note strong {
    color: var(--charcoal);
}

/* Responsive Design */
@media (max-width: 768px) {
    .calculator-card {
        padding: 25px;
    }

    .calculator-header h1 {
        font-size: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    .result-value {
        font-size: 2rem;
    }

    .results-card {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .calculator-container {
        padding: 20px 15px;
    }

    .calculator-header h1 {
        font-size: 1.75rem;
    }

    .calculator-card {
        padding: 20px;
    }

    .form-section h3 {
        font-size: 1.2rem;
    }

    .btn-calculate {
        font-size: 1rem;
        padding: 14px 24px;
    }
}