/* ===========================
   Calculators Section
   =========================== */

.calculators-section {
    padding: var(--spacing-lg) 0 var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.calculator {
    display: none;
    background-color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-light);
    overflow: hidden;
}

.calculator.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.calculator-header {
    padding: var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-bottom: 2px solid var(--green-primary);
}

.calculator-header h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.calculator-header h3 i {
    color: var(--green-primary);
}

.calculator-header p {
    color: var(--text-secondary);
    margin: 0;
}

.calculator-body {
    padding: var(--spacing-lg);
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

/* ===========================
   Calculator Inputs
   =========================== */

.calculator-inputs {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.input-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

.input-group input[type="number"],
.input-group input[type="text"] {
    width: 100%;
    padding: var(--spacing-sm);
    background-color: white;
    border: 1px solid var(--gray-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.input-group input:focus {
    outline: none;
    border-color: var(--green-primary);
    box-shadow: 0 0 0 3px rgba(71, 78, 43, 0.1);
}

.input-group small {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Slider Styling */
.slider-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.slider-container input[type="range"] {
    flex: 1;
    height: 6px;
    background: var(--gray-light);
    border-radius: var(--radius-sm);
    outline: none;
    -webkit-appearance: none;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--btn-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider-container input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--btn-primary-hover);
    transform: scale(1.1);
}

.slider-container input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--btn-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
}

.slider-container input[type="range"]::-moz-range-thumb:hover {
    background: var(--btn-primary-hover);
    transform: scale(1.1);
}

.slider-value {
    min-width: 60px;
    text-align: center;
    font-weight: 600;
    color: var(--green-primary);
    font-size: 1.125rem;
}

/* Channel Inputs */
.channel-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xs);
}

.channel-input label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
}

.channel-input input {
    margin-top: var(--spacing-xs);
}

.channel-total {
    display: block;
    margin-top: var(--spacing-sm);
    text-align: right;
    font-weight: 600;
    color: var(--text-secondary);
}

.channel-total.warning {
    color: var(--warning);
}

.channel-total.error {
    color: var(--danger);
}

/* ===========================
   Input Validation & Errors
   =========================== */

.input-group.error input {
    border-color: var(--danger);
    animation: shake 0.3s ease;
}

.input-group.success input {
    border-color: var(--success);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.error-message {
    display: block;
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    animation: fadeIn 0.3s ease;
}

.success-message {
    display: block;
    color: var(--success);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    animation: fadeIn 0.3s ease;
}

/* ===========================
   Loading States
   =========================== */

.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--green-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===========================
   Calculator Results
   =========================== */

.calculator-results {
    display: flex;
    flex-direction: column;
}

.results-panel {
    background-color: var(--bg-secondary);
    border: 2px solid var(--green-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    animation: slideIn 0.4s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.results-panel h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.results-panel h5 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 1rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-light);
}

.result-item:last-of-type {
    border-bottom: none;
}

.result-item span {
    color: var(--text-secondary);
}

.result-item strong {
    color: var(--text-primary);
    font-size: 1.125rem;
}

.result-item.highlight {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-light);
    margin-bottom: var(--spacing-sm);
}

.result-item.highlight strong {
    color: var(--green-primary);
    font-size: 1.5rem;
}

/* Benchmark Comparison */
.benchmark-comparison {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

.benchmark-comparison p {
    margin: 0;
    color: var(--text-secondary);
}

.benchmark-comparison strong {
    color: var(--green-primary);
}

.benchmark-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.benchmark-status.good {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.benchmark-status.warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.benchmark-status.poor {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.benchmark-status i {
    font-size: 1.25rem;
}

/* Ratio Section */
.ratio-section {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--gray-light);
}

/* Charts */
canvas {
    margin: var(--spacing-md) 0;
    max-height: 300px;
}

/* CTA Box */
.cta-box {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--btn-primary);
    border-radius: var(--radius-md);
    text-align: center;
}

.cta-box p {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.cta-box .btn-cta {
    background-color: white;
    color: var(--green-dark);
    font-weight: 600;
}

.cta-box .btn-cta:hover {
    background-color: var(--bg-secondary);
    color: var(--green-primary);
}

/* ===========================
   Saved Calculations
   =========================== */

.saved-calculations {
    margin-bottom: var(--spacing-md);
}

.saved-calculations-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.saved-calculations-header h5 {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.saved-calculations-list {
    background-color: white;
    border: 1px solid var(--gray-light);
    border-radius: var(--radius-md);
    max-height: 200px;
    overflow-y: auto;
}

.saved-calculations-list:empty::before {
    content: 'No saved calculations yet';
    display: block;
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
}

.saved-calculation-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--gray-light);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.saved-calculation-item:hover {
    background-color: var(--bg-tertiary);
    transform: translateX(2px);
}

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

.saved-calculation-info {
    flex: 1;
}

.saved-calculation-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.saved-calculation-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.saved-calculation-preview {
    font-size: 0.875rem;
    color: var(--green-primary);
    margin-top: 2px;
}

.saved-calculation-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.saved-calculation-actions button {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-size: 1rem;
}

.saved-calculation-actions button:hover {
    color: var(--green-primary);
    background-color: var(--gray-light);
}

.saved-calculation-actions .delete-btn:hover {
    color: var(--danger);
}

/* Export & Action Buttons */
.result-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-light);
}

.btn-export {
    flex: 1;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    justify-content: center;
    border: 1px solid var(--gray-light);
}

.btn-export:hover {
    background-color: var(--gray-light);
}

/* Recommendations Box */
.recommendations-box {
    background: linear-gradient(135deg, rgba(71, 78, 43, 0.08) 0%, rgba(53, 58, 31, 0.05) 100%);
    border: 1px solid rgba(71, 78, 43, 0.2);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.recommendations-box h5 {
    color: var(--green-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
}

.recommendations-box ul {
    list-style: none;
    margin: 0;
}

.recommendations-box li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.recommendations-box li::before {
    content: '→';
    color: var(--green-primary);
    font-weight: bold;
    flex-shrink: 0;
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 1024px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    .channel-inputs {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .calculator-header {
        padding: var(--spacing-md);
    }
    
    .calculator-body {
        padding: var(--spacing-md);
    }
    
    .calculator-header h3 {
        font-size: 1.25rem;
    }
    
    .result-item.highlight strong {
        font-size: 1.25rem;
    }
}

@media (max-width: 640px) {
    .calculator-inputs {
        gap: var(--spacing-sm);
    }
    
    .results-panel {
        padding: var(--spacing-md);
    }
    
    .result-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .slider-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .slider-value {
        text-align: left;
    }
}