/* ============================================
   Performance Page Styles
   ============================================ */

.performance-main {
    padding: 40px 0 80px;
}

/* ===== Overview Section ===== */
.overview-section {
    margin-bottom: 40px;
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.overview-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-base);
}

.overview-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.overview-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.overview-icon.success {
    background: var(--success-light);
    color: var(--success);
}

.overview-icon.info {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-primary);
}

.overview-icon.warning {
    background: var(--warning-light);
    color: var(--warning);
}

.overview-icon.purple {
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-secondary);
}

.overview-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 4px;
}

.overview-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.overview-trend {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.8rem;
    padding: 4px 8px;
    border-radius: 4px;
}

.overview-trend.up {
    background: var(--success-light);
    color: var(--success);
}

.overview-trend.down {
    background: var(--danger-light);
    color: var(--danger);
}

.overview-trend.neutral {
    background: var(--bg-tertiary);
    color: var(--text-muted);
}

/* ===== Model Comparison ===== */
.model-comparison-section {
    margin-bottom: 40px;
}

.period-toggle {
    display: flex;
    background: var(--bg-tertiary);
    border-radius: 8px;
    overflow: hidden;
}

.period-btn {
    padding: 8px 16px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.period-btn:hover {
    color: var(--text-primary);
}

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

.model-comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.model-perf-card {
    padding: 24px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    text-align: center;
    transition: all var(--transition-base);
}

.model-perf-card:hover {
    background: var(--bg-hover);
}

.model-perf-card.best {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0.05) 100%);
    border: 1px solid var(--success);
}

.model-perf-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.5rem;
    color: white;
}

.model-perf-icon.xgboost { background: linear-gradient(135deg, #10b981, #059669); }
.model-perf-icon.lightgbm { background: linear-gradient(135deg, #f59e0b, #d97706); }
.model-perf-icon.dnn { background: linear-gradient(135deg, #3b82f6, #1d4ed8); }
.model-perf-icon.lstm { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }
.model-perf-icon.gnn { background: linear-gradient(135deg, #ec4899, #be185d); }

.model-perf-name {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.model-perf-stats {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.model-stat-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
}

.model-stat-label {
    color: var(--text-muted);
}

.model-stat-value {
    font-weight: 600;
}

.model-stat-value.good { color: var(--success); }
.model-stat-value.bad { color: var(--danger); }

/* ===== Asset Performance Table ===== */
.asset-performance-section {
    margin-bottom: 40px;
}

.accuracy-bar {
    display: flex;
    align-items: center;
    gap: 12px;
}

.accuracy-bar-fill {
    flex: 1;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.accuracy-bar-inner {
    height: 100%;
    border-radius: 4px;
    transition: width var(--transition-slow);
}

.accuracy-bar-inner.high { background: var(--success); }
.accuracy-bar-inner.medium { background: var(--warning); }
.accuracy-bar-inner.low { background: var(--danger); }

.accuracy-value {
    font-weight: 600;
    min-width: 48px;
    text-align: right;
}

.trend-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.875rem;
}

.trend-indicator.up { color: var(--success); }
.trend-indicator.down { color: var(--danger); }
.trend-indicator.flat { color: var(--text-muted); }

/* ===== Validation Section ===== */
.validation-section {
    margin-bottom: 40px;
}

.validation-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.validation-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
}

.validation-status {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1rem;
}

.validation-status.correct {
    background: var(--success-light);
    color: var(--success);
}

.validation-status.incorrect {
    background: var(--danger-light);
    color: var(--danger);
}

.validation-status.pending {
    background: var(--bg-card);
    color: var(--text-muted);
}

.validation-info {
    flex: 1;
}

.validation-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.validation-asset {
    font-weight: 600;
}

.validation-model {
    padding: 2px 6px;
    background: var(--bg-card);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.validation-details {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.validation-result {
    text-align: right;
}

.validation-predicted {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.validation-actual {
    font-weight: 600;
}

/* ===== Methodology Note ===== */
.methodology-note {
    margin-top: 40px;
}

.note-card {
    display: flex;
    gap: 24px;
    padding: 28px;
    background: rgba(59, 130, 246, 0.05);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--border-radius-lg);
}

.note-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.15);
    border-radius: 12px;
    color: var(--accent-primary);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.note-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.note-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.note-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-primary);
    font-weight: 500;
    transition: gap var(--transition-fast);
}

.note-link:hover {
    gap: 12px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .overview-grid {
        grid-template-columns: 1fr;
    }
    
    .note-card {
        flex-direction: column;
    }
}