/* Comparison Module — Modern Fintech Design */

/* ============================================
   HERO SECTION — Smart Period Selection
   ============================================ */

.comparison-hero {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.comparison-hero-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.comparison-hero-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   COMPARISON MODE TABS
   ============================================ */

.comparison-mode-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding: 4px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
}

.comparison-mode-tab {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    border-radius: 12px;
    font-family: var(--font-family);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.comparison-mode-tab:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.comparison-mode-tab.active {
    background: var(--bg-secondary);
    color: var(--accent);
    box-shadow: var(--shadow-sm);
}

/* ============================================
   PERIOD SELECTORS — Modern Design
   ============================================ */

.comparison-periods {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.period-selector {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.period-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.period-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-family: var(--font-family);
    font-size: 0.9rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.period-select:hover {
    border-color: var(--accent);
}

.period-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.vs-divider {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
    padding-bottom: 20px;
}

/* ============================================
   COMPARISON ACTIONS
   ============================================ */

.comparison-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

.btn-compare {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 12px;
    font-family: var(--font-family);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-compare:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(217, 119, 87, 0.3);
}

.btn-compare:active {
    transform: translateY(0);
}

/* ============================================
   METRIC CARDS GRID — Comparison Results
   ============================================ */

.comparison-metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: var(--spacing-xl);
    align-items: start;
}

@media (max-width: 1400px) {
    .comparison-metrics-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1024px) {
    .comparison-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .comparison-metrics-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

/* Comparison cards now use dashboard card classes from cards.css */
/* Status indicators for comparison context */
.comparison-metrics-grid .metric-card.success .status-indicator {
    background: #10b981;
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.4);
}

.comparison-metrics-grid .metric-card.danger .status-indicator {
    background: #ef4444;
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.4);
}

.comparison-metrics-grid .metric-card.neutral .status-indicator {
    background: var(--text-tertiary);
}

/* ============================================
   TOP 3 CHANGES PANEL
   ============================================ */

.comparison-top-changes {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.comparison-top-changes-header {
    margin-bottom: var(--spacing-lg);
}

.comparison-top-changes-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.comparison-top-changes-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.comparison-top-changes-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.comparison-top-change-item {
    padding: var(--spacing-md);
    border-radius: 12px;
    border-left: 4px solid;
    background: var(--bg-tertiary);
    transition: all var(--transition-fast);
}

.comparison-top-change-item:hover {
    transform: translateX(4px);
}

.comparison-top-change-item.positive {
    border-color: var(--success);
    background: var(--success-bg);
}

.comparison-top-change-item.negative {
    border-color: var(--danger);
    background: var(--danger-bg);
}

.comparison-top-change-item.neutral {
    border-color: var(--text-tertiary);
    background: var(--bg-tertiary);
}

.comparison-top-change-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
}

.comparison-top-change-metric {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.comparison-top-change-badge {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
}

.comparison-top-change-badge.positive {
    color: var(--success);
    background: var(--success-bg);
}

.comparison-top-change-badge.negative {
    color: var(--danger);
    background: var(--danger-bg);
}

.comparison-top-change-values {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.comparison-top-change-diff {
    font-weight: 600;
    margin-left: var(--spacing-xs);
}

.comparison-top-change-diff.positive {
    color: var(--success);
}

.comparison-top-change-diff.negative {
    color: var(--danger);
}

/* ============================================
   DETAILED TABLE
   ============================================ */

.comparison-table-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.comparison-table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.comparison-table-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.comparison-table-export {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.comparison-table-export:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table thead {
    background: var(--bg-tertiary);
}

.comparison-table th {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--border-color);
}

.comparison-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
}

.comparison-table tbody tr:hover {
    background: var(--bg-hover);
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table .metric-icon {
    margin-right: var(--spacing-xs);
}

.comparison-table .value-positive {
    color: var(--success);
    font-weight: 600;
}

.comparison-table .value-negative {
    color: var(--danger);
    font-weight: 600;
}

.comparison-sparkline-mini {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    letter-spacing: 1px;
}

/* ============================================
   LOADING & EMPTY STATES
   ============================================ */

.comparison-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl);
    gap: var(--spacing-md);
}

.comparison-loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.comparison-loading-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.comparison-empty {
    text-align: center;
    padding: var(--spacing-xxl);
}

.comparison-empty-icon {
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
    color: var(--text-tertiary);
}

.comparison-empty-icon svg {
    width: 64px;
    height: 64px;
}

.comparison-empty-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.comparison-empty-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ============================================
   SKELETON LOADERS
   ============================================ */

.comparison-skeleton {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.comparison-skeleton-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-lg);
    height: 200px;
}

.comparison-skeleton-line {
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    margin-bottom: var(--spacing-sm);
}

.comparison-skeleton-line.large {
    height: 32px;
    width: 60%;
}

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

@media (max-width: 768px) {
    .comparison-periods {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .vs-divider {
        text-align: center;
        padding: var(--spacing-xs) 0;
    }

    .comparison-mode-tabs {
        flex-direction: column;
    }

    .comparison-metrics-grid {
        grid-template-columns: 1fr;
    }

    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* ============================================
   DARK THEME
   ============================================ */

[data-theme="dark"] .comparison-hero {
    background: var(--bg-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .comparison-mode-tab.active {
    background: var(--bg-primary);
}

[data-theme="dark"] .period-select {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .comparison-metrics-grid .metric-card {
    background: var(--bg-secondary);
}

[data-theme="dark"] .comparison-top-changes {
    background: var(--bg-secondary);
}