/**
 * Chart Control Styles
 *
 * Styling for chart UI controls (series selector, zoom, resolution, etc.)
 * Integrates with Solventer's design system via _colors.css tokens.
 *
 * Part of the new modular chart system (v2).
 */

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

.chart-container {
    position: relative;
    margin: var(--size-chart-container-margin-y) var(--space-0);
}

.chart-canvas-wrapper {
    position: relative;
    width: 100%;
}

.chart-canvas-wrapper canvas {
    max-width: 100%;
    height: auto !important;
}

.chart-title {
    color: var(--color-text-primary);
    font-weight: 600;
    margin-bottom: 1rem;
}

/* ============================================================================
   CONTROL PANEL
   ============================================================================ */

.chart-controls-panel {
    background: var(--color-surface-page);
    border: var(--size-chart-panel-border) solid var(--color-border-default);
    border-radius: var(--size-chart-panel-radius);
    transition: all 0.2s ease;
}

.chart-controls-panel:hover {
    box-shadow: 0 2px 8px var(--color-hover-overlay);
}

/* ============================================================================
   SERIES SELECTOR
   ============================================================================ */

.chart-series-selector .form-label {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--size-form-label-margin-bottom);
}

.chart-series-selector .form-select {
    border-radius: var(--size-chart-control-radius);
    border: var(--border-width-sm) solid var(--color-border-subtle);
    transition: all 0.2s ease;
}

.chart-series-selector .form-select:focus {
    border-color: var(--color-brand-primary);
    box-shadow: 0 0 0 0.2rem rgba(var(--color-brand-primary-rgb), 0.15);
}

/* ============================================================================
   RESOLUTION TOGGLE
   ============================================================================ */

.chart-resolution-toggle .btn {
    border-radius: var(--size-chart-control-radius);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.chart-resolution-toggle .btn-outline-secondary {
    color: var(--color-text-primary);
    border-color: var(--color-border-subtle);
    border-width: var(--size-chart-toggle-border);
}

.chart-resolution-toggle .btn-outline-secondary:hover {
    background: var(--color-gray-500);
    color: var(--color-text-inverse);
    border-color: var(--color-gray-500);
    transform: translateY(-1px);
}

/* ============================================================================
   ZOOM CONTROLS
   ============================================================================ */

.chart-zoom-controls {
    display: flex;
    align-items: center;
    gap: var(--size-chart-control-gap);
    flex-wrap: wrap;
}

.chart-zoom-controls .btn {
    border-radius: var(--size-chart-control-radius);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.chart-zoom-controls .btn-outline-secondary {
    color: var(--color-text-primary);
    border-color: var(--color-border-subtle);
    border-width: var(--size-chart-toggle-border);
}

.chart-zoom-controls .btn-outline-secondary:hover {
    background: var(--color-gray-500);
    color: var(--color-text-inverse);
    border-color: var(--color-gray-500);
}

.chart-zoom-controls .btn-group {
    box-shadow: 0 1px 3px var(--color-hover-overlay);
    border-radius: var(--size-chart-control-radius);
    overflow: hidden;
}

.chart-zoom-controls .btn-group .btn {
    border-radius: 0;
    border-right: var(--size-chart-toggle-border) solid var(--color-border-subtle);
}

.chart-zoom-controls .btn-group .btn:first-child {
    border-top-left-radius: var(--size-chart-control-radius);
    border-bottom-left-radius: var(--size-chart-control-radius);
}

.chart-zoom-controls .btn-group .btn:last-child {
    border-top-right-radius: var(--size-chart-control-radius);
    border-bottom-right-radius: var(--size-chart-control-radius);
    border-right: none;
}

/* ============================================================================
   MILESTONE TOGGLES
   ============================================================================ */

.chart-milestone-toggles .form-label {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.milestone-toggle-group {
    padding: var(--space-3) var(--space-0);
}

.milestone-toggle-group .form-check {
    margin-bottom: var(--space-3);
}

.milestone-toggle-group .form-check-input {
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    border: var(--size-chart-toggle-border-strong) solid var(--color-border-subtle);
    transition: all 0.2s ease;
}

.milestone-toggle-group .form-check-input:checked {
    background-color: var(--color-brand-primary);
    border-color: var(--color-brand-primary);
}

.milestone-toggle-group .form-check-input:focus {
    box-shadow: 0 0 0 0.2rem rgba(var(--color-brand-primary-rgb), 0.15);
}

.milestone-toggle-group .form-check-label {
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--color-text-primary);
    user-select: none;
    transition: color 0.2s ease;
}

.milestone-toggle-group .form-check-label:hover {
    color: var(--color-brand-primary);
}

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

@media (max-width: 768px) {
    .chart-zoom-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .chart-zoom-controls .btn-group {
        width: 100%;
    }

    .chart-zoom-controls .btn {
        width: 100%;
    }

    .milestone-toggle-group.d-flex {
        flex-direction: column;
    }
}

/* ============================================================================
   DARK MODE SUPPORT (Framework ready - not implemented)
   ============================================================================ */
/*
[data-theme="dark"] .chart-controls-panel {
    background: var(--color-surface-card);
    border-color: var(--color-border-default);
}

[data-theme="dark"] .chart-series-selector .form-select,
[data-theme="dark"] .chart-resolution-toggle .btn-outline-secondary,
[data-theme="dark"] .chart-zoom-controls .btn-outline-secondary {
    background: var(--color-surface-page);
    color: var(--color-text-primary);
    border-color: var(--color-border-default);
}

[data-theme="dark"] .chart-series-selector .form-label,
[data-theme="dark"] .chart-milestone-toggles .form-label {
    color: var(--color-text-secondary);
}

[data-theme="dark"] .milestone-toggle-group .form-check-label {
    color: var(--color-text-muted);
}

[data-theme="dark"] .chart-title {
    color: var(--color-text-primary);
}
*/

/* ============================================================================
   LOADING STATE
   ============================================================================ */

.chart-container.loading .chart-canvas-wrapper::before {
    content: "Loading chart...";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1rem;
    color: var(--color-text-secondary);
    z-index: 10;
}

.chart-container.loading .chart-canvas-wrapper::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(var(--color-white-rgb), 0.8);
    backdrop-filter: blur(2px);
    z-index: 9;
}

/* ============================================================================
   ANIMATION
   ============================================================================ */

.chart-controls-panel * {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================================
   ACCESSIBILITY
   ============================================================================ */

.chart-container:focus-within {
    outline: var(--border-width-md) solid var(--color-brand-primary);
    outline-offset: var(--border-width-md);
    border-radius: var(--border-radius-sm);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .chart-zoom-controls .btn {
        border-width: var(--border-width-md);
    }

    .chart-zoom-controls .btn.active {
        border-width: var(--border-width-lg);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .chart-controls-panel *,
    .chart-zoom-controls .btn,
    .chart-resolution-toggle .btn {
        animation: none;
        transition: none;
    }
}