/* Percentage Change Calculator Specific Styles */

.calculator-form {
    display: grid;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
}

.form-group input {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background-color: var(--background-alt);
    color: var(--text-color);
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.1);
}

.input-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

.calculate-btn, .clear-btn {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.calculate-btn {
    background-color: var(--primary-color);
    color: white;
    margin-top: 1rem;
}

.calculate-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 111, 165, 0.3);
}

.clear-btn {
    background-color: var(--secondary-color);
    color: white;
}

.clear-btn:hover {
    background-color: var(--secondary-dark);
    transform: translateY(-1px);
}

/* Results Section */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.result-card {
    background: var(--background-alt);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-align: center;
}

.result-card.primary-result {
    grid-column: span 1;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
}

.result-card h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
    opacity: 0.9;
}

.result-value {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.primary-result .result-value {
    font-size: 2.5rem;
}

.result-label {
    font-size: 0.85rem;
    opacity: 0.8;
}

.positive-change {
    color: #28a745;
}

.negative-change {
    color: #dc3545;
}

.no-change {
    color: var(--text-muted);
}

/* Calculation Breakdown */
.calculation-breakdown {
    background: var(--background-alt);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-top: 1.5rem;
}

.calculation-breakdown h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.calculation-step {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.calculation-step:last-child {
    border-bottom: none;
}

.step-label {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.step-formula {
    font-family: 'Courier New', monospace;
    background: var(--background);
    padding: 0.5rem;
    border-radius: 4px;
    margin-top: 0.5rem;
    overflow-x: auto;
}

/* Formula Box */
.formula-box {
    background: var(--background-alt);
    border-left: 4px solid var(--primary-color);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: var(--border-radius);
}

.formula-box p {
    margin: 0;
    font-family: 'Courier New', monospace;
}

/* Error Messages */
.error-messages {
    background: #f8d7da;
    color: #721c24;
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid #f5c6cb;
    margin-bottom: 1rem;
}

.error-messages p {
    margin: 0;
}

/* Related Links */
.related-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.related-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--background-alt);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.related-link:hover {
    border-color: var(--primary-color);
    transform: translateX(5px);
}

.related-link i {
    color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .primary-result {
        grid-column: span 1;
    }
    
    .result-value {
        font-size: 1.75rem;
    }
    
    .primary-result .result-value {
        font-size: 2rem;
    }
    
    .related-links {
        grid-template-columns: 1fr;
    }
}

/* Dark Mode Adjustments */
@media (prefers-color-scheme: dark) {
    .form-group input {
        background-color: var(--background-alt);
        border-color: var(--border-color);
    }
    
    .error-messages {
        background: #5a1e1e;
        color: #f8d7da;
        border-color: #721c24;
    }
    
    .step-formula {
        background: var(--background);
    }
}