/* ============================================
   BACKTEST.CSS - Backtest Page Styles
   ============================================ */

/* ============================================
   BACKTEST LAYOUT
   ============================================ */

.backtest-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.backtest-panel {
    padding: 2rem;
    overflow-x: hidden; /* Prevent horizontal overflow */
}

.backtest-input-panel {
    border-right: 1px solid var(--border-primary);
}

/* ============================================
   BACKTEST FORM
   ============================================ */

/* Ticker Button Group */
.ticker-button-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.ticker-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--accent-primary-light);
    background-color: var(--accent-primary-light);
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    transition: all 0.2s ease;
    min-width: 60px;
}

.ticker-btn:hover {
    border-color: var(--accent-primary-hover);
    color: var(--accent-primary-hover);
    background-color: var(--bg-secondary);
}

.ticker-btn.active {
    border-color: var(--accent-primary-active);
    background-color: var(--accent-primary-active);
    color: white;
}

.ticker-btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

#backtest-form .form-group:last-child {
    margin-bottom: 1.25rem;
}

#backtest-form .form-actions {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-primary);
}

/* ============================================
   BACKTEST PLACEHOLDER
   ============================================ */

.backtest-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    text-align: center;
    color: var(--text-tertiary);
    padding: 2rem;
}

.backtest-placeholder-icon {
    margin-bottom: 1.5rem;
    opacity: 0.3;
}

.backtest-placeholder h3 {
    color: var(--text-secondary);
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.backtest-placeholder p {
    max-width: 400px;
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ============================================
   BACKTEST RESULTS
   ============================================ */

#backtest-results-section {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.backtest-error {
    padding: 1.5rem;
    background-color: var(--color-danger-bg);
    border: 1px solid var(--color-danger);
    border-left: 4px solid var(--color-danger);
    border-radius: var(--radius-md);
    color: var(--color-danger);
    margin-bottom: 1.5rem;
}

.backtest-error strong {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

/* ============================================
   VALIDATION ERRORS
   ============================================ */

.validation-error {
    background-color: var(--bg-elevated);
    border: 2px solid var(--color-danger);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.validation-error-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background-color: var(--color-danger-bg);
    border-bottom: 1px solid var(--color-danger);
}

.validation-error-icon {
    font-size: 2rem;
}

.validation-error-header h3 {
    color: var(--color-danger);
    margin: 0;
    font-size: 1.25rem;
}

.validation-error-message {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-primary);
}

.validation-error-message p {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.validation-error-message p:last-child {
    margin-bottom: 0;
}

.validation-error-strategy {
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
}

.validation-error-signal {
    margin-bottom: 1rem;
}

.validation-error-signal:last-child {
    margin-bottom: 0;
}

.validation-error-signal strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.validation-error-signal code {
    display: block;
    padding: 0.75rem;
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    overflow-x: auto;
}

.validation-error-explanation {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-primary);
}

.validation-error-explanation h4 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.validation-error-explanation p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.validation-error-dates {
    padding: 1.5rem;
}

.validation-error-dates h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.validation-dates-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.validation-date-badge {
    padding: 0.375rem 0.75rem;
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.validation-error-actions {
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    display: flex;
    gap: 1rem;
}

/* ============================================
   METRICS DISPLAY
   ============================================ */

.metric-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: var(--bg-elevated);
    border-radius: var(--radius-md);
    margin-bottom: 0.75rem;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.metric-value {
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
}

/* ============================================
   CHART CONTAINER
   ============================================ */

.chart-container {
    position: relative;
    width: 100%;
    height: 300px;
    margin: 1.5rem 0;
    padding: 1rem;
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
}

/* ============================================
   SECTION STYLING
   ============================================ */

.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .backtest-main {
        grid-template-columns: 1fr;
    }
    
    .backtest-input-panel {
        border-right: none;
        border-bottom: 1px solid var(--border-primary);
    }
    
    .backtest-panel {
        padding: 1.5rem;
    }
    
    .chart-container {
        height: 250px;
    }
}

@media (max-width: 480px) {
    .backtest-placeholder {
        min-height: 300px;
        padding: 1.5rem;
    }
    
    .validation-dates-list {
        gap: 0.375rem;
    }
    
    .metric-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.375rem;
    }
    
    .chart-container {
        height: 200px;
        padding: 0.75rem;
    }
    
    /* Fix date input overflow on small screens */
    #backtest-form input[type="date"] {
        min-width: 0;
        width: 100%;
        max-width: 100%;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .backtest-panel {
        padding: 1rem;
    }
}