/**
 * Premium Charts v2.0.0 - World-Class Data Visualization
 * 
 * A publication-quality charting system inspired by Bloomberg, Looker, Tableau.
 * Designed to EXCEED modern data visualization standards.
 * 
 * Features:
 * - Animated counters with easing
 * - 3D bar effects with realistic depth
 * - Glassmorphism card effects
 * - Hover tooltips with precise values
 * - Radar/spider charts for multi-axis data
 * - Animated line/area charts
 * - Progress rings with percentage
 * - Comparison tables with status badges
 * - Full dark mode support
 * - Cross-viewport parity (desktop/tablet/mobile)
 * - Print-optimized layouts
 * - Accessibility compliant (WCAG 2.1 AA)
 * 
 * NO GRADIENTS - Uses solid colors per design system policy.
 * 
 * @since v5.36.0
 */

/* ==========================================================================
   DESIGN TOKENS
   ========================================================================== */

:root {
    /* Premium Chart Palette (Solid Colors Only) */
    --pc-blue-500: #3B82F6;
    --pc-blue-600: #2563EB;
    --pc-blue-700: #1D4ED8;
    --pc-indigo-500: #6366F1;
    --pc-purple-500: #8B5CF6;
    --pc-pink-500: #EC4899;
    --pc-red-500: #EF4444;
    --pc-orange-500: #F97316;
    --pc-amber-500: #F59E0B;
    --pc-yellow-500: #EAB308;
    --pc-lime-500: #84CC16;
    --pc-green-500: #22C55E;
    --pc-emerald-500: #10B981;
    --pc-teal-500: #14B8A6;
    --pc-cyan-500: #06B6D4;
    --pc-sky-500: #0EA5E9;
    --pc-slate-500: #64748B;
    --pc-gray-500: #6B7280;
    
    /* Surface & Text */
    --pc-surface: #FFFFFF;
    --pc-surface-elevated: #FAFAFA;
    --pc-surface-hover: #F5F5F5;
    --pc-border: rgba(0, 0, 0, 0.08);
    --pc-border-strong: rgba(0, 0, 0, 0.16);
    --pc-text: #1A1A1A;
    --pc-text-secondary: #6B7280;
    --pc-text-muted: #9CA3AF;
    
    /* Shadows */
    --pc-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --pc-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --pc-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --pc-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --pc-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --pc-shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
    
    /* 3D Effect Shadows (for bars) */
    --pc-bar-shadow: 
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        inset 0 -2px 6px rgba(0, 0, 0, 0.15),
        0 4px 12px rgba(0, 0, 0, 0.08);
    --pc-bar-shadow-hover: 
        inset 0 1px 0 rgba(255, 255, 255, 0.4),
        inset 0 -2px 6px rgba(0, 0, 0, 0.2),
        0 8px 20px rgba(0, 0, 0, 0.12);
    
    /* Animation Timings */
    --pc-duration-fast: 150ms;
    --pc-duration-normal: 300ms;
    --pc-duration-slow: 500ms;
    --pc-duration-chart: 800ms;
    --pc-easing-default: cubic-bezier(0.4, 0, 0.2, 1);
    --pc-easing-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --pc-easing-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    
    /* Spacing */
    --pc-spacing-xs: 0.25rem;
    --pc-spacing-sm: 0.5rem;
    --pc-spacing-md: 1rem;
    --pc-spacing-lg: 1.5rem;
    --pc-spacing-xl: 2rem;
    --pc-spacing-2xl: 3rem;
    
    /* Border Radius */
    --pc-radius-sm: 6px;
    --pc-radius-md: 10px;
    --pc-radius-lg: 16px;
    --pc-radius-xl: 24px;
    --pc-radius-full: 9999px;
}

/* Dark Mode Tokens */
[data-theme="dark"] {
    --pc-surface: #1E293B;
    --pc-surface-elevated: #0F172A;
    --pc-surface-hover: #334155;
    --pc-border: rgba(255, 255, 255, 0.08);
    --pc-border-strong: rgba(255, 255, 255, 0.16);
    --pc-text: #F1F5F9;
    --pc-text-secondary: #94A3B8;
    --pc-text-muted: #64748B;
    
    --pc-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --pc-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --pc-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --pc-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
}

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

.pc-chart {
    --chart-color: var(--pc-blue-500);
    position: relative;
    margin: var(--pc-spacing-xl) auto;
    padding: var(--pc-spacing-xl);
    background: var(--pc-surface);
    border: 1px solid var(--pc-border);
    border-radius: var(--pc-radius-xl);
    box-shadow: var(--pc-shadow-lg);
    max-width: 100%;
    overflow: visible;
    transition: box-shadow var(--pc-duration-normal) var(--pc-easing-default),
                transform var(--pc-duration-normal) var(--pc-easing-default);
}

.pc-chart:hover {
    box-shadow: var(--pc-shadow-xl);
}

.pc-chart__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--pc-spacing-md);
    margin-bottom: var(--pc-spacing-lg);
}

.pc-chart__title-group {
    flex: 1;
}

.pc-chart__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--pc-spacing-xs);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--chart-color);
    margin-bottom: var(--pc-spacing-xs);
}

.pc-chart__eyebrow::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: var(--pc-radius-full);
    background: var(--chart-color);
}

.pc-chart__title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--pc-text);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.pc-chart__subtitle {
    margin: var(--pc-spacing-xs) 0 0;
    font-size: 0.9375rem;
    color: var(--pc-text-secondary);
    line-height: 1.5;
}

.pc-chart__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--pc-spacing-xs);
    padding: var(--pc-spacing-xs) var(--pc-spacing-sm);
    background: var(--pc-surface-elevated);
    border: 1px solid var(--pc-border);
    border-radius: var(--pc-radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--pc-text-secondary);
    white-space: nowrap;
}

.pc-chart__badge--live::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: var(--pc-radius-full);
    background: var(--pc-green-500);
    animation: pc-pulse 2s ease-in-out 3;
}

@keyframes pc-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.2); }
}

.pc-chart__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--pc-spacing-md);
    margin-top: var(--pc-spacing-lg);
    padding-top: var(--pc-spacing-md);
    border-top: 1px solid var(--pc-border);
}

.pc-chart__source {
    font-size: 0.75rem;
    color: var(--pc-text-muted);
    font-style: italic;
}

.pc-chart__source a {
    color: var(--chart-color);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.pc-chart__timestamp {
    font-size: 0.75rem;
    color: var(--pc-text-muted);
}

/* ==========================================================================
   ANIMATED STAT COUNTER
   ========================================================================== */

.pc-stats {
    display: grid;
    gap: var(--pc-spacing-md);
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.pc-stats--2 { grid-template-columns: repeat(2, 1fr); }
.pc-stats--3 { grid-template-columns: repeat(3, 1fr); }
.pc-stats--4 { grid-template-columns: repeat(4, 1fr); }

.pc-stat {
    position: relative;
    padding: var(--pc-spacing-lg);
    background: var(--pc-surface-elevated);
    border: 1px solid var(--pc-border);
    border-radius: var(--pc-radius-lg);
    text-align: center;
    overflow: hidden;
    transition: all var(--pc-duration-normal) var(--pc-easing-default);
}

/* Top accent bar - animated on hover */
.pc-stat::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--stat-color, var(--pc-blue-500));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--pc-duration-normal) var(--pc-easing-spring);
}

.pc-stat:hover {
    transform: translateY(-4px);
    box-shadow: var(--pc-shadow-lg);
    border-color: var(--stat-color, var(--pc-blue-500));
}

.pc-stat:hover::before {
    transform: scaleX(1);
}

.pc-stat__icon {
    font-size: 1.5rem;
    margin-bottom: var(--pc-spacing-sm);
    opacity: 0.8;
}

.pc-stat__value {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--stat-color, var(--pc-blue-500));
    line-height: 1;
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
}

/* Animated counter effect */
.pc-stat__value[data-value] {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--pc-duration-slow) var(--pc-easing-default),
                transform var(--pc-duration-slow) var(--pc-easing-default);
}

.pc-stat__value[data-value].pc-animated {
    opacity: 1;
    transform: translateY(0);
}

.pc-stat__label {
    margin-top: var(--pc-spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--pc-text-secondary);
}

.pc-stat__trend {
    display: inline-flex;
    align-items: center;
    gap: var(--pc-spacing-xs);
    margin-top: var(--pc-spacing-sm);
    padding: var(--pc-spacing-xs) var(--pc-spacing-sm);
    border-radius: var(--pc-radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.pc-stat__trend--up {
    background: rgba(34, 197, 94, 0.1);
    color: var(--pc-green-500);
}

.pc-stat__trend--down {
    background: rgba(239, 68, 68, 0.1);
    color: var(--pc-red-500);
}

.pc-stat__trend--neutral {
    background: rgba(107, 114, 128, 0.1);
    color: var(--pc-gray-500);
}

/* ==========================================================================
   3D HORIZONTAL BAR CHART
   ========================================================================== */

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

.pc-hbar__row {
    display: grid;
    grid-template-columns: minmax(100px, 150px) 1fr minmax(50px, 70px);
    align-items: center;
    gap: var(--pc-spacing-md);
    padding: var(--pc-spacing-sm) 0;
    transition: background var(--pc-duration-fast);
    border-radius: var(--pc-radius-sm);
}

.pc-hbar__row:hover {
    background: var(--pc-surface-hover);
}

.pc-hbar__label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--pc-text);
    text-align: right;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pc-hbar__track {
    position: relative;
    height: 16px;
    background: var(--pc-surface-elevated);
    border-radius: var(--pc-radius-full);
    overflow: hidden;
    box-shadow: var(--pc-shadow-inner);
    border: 1px solid var(--pc-border);
}

.pc-hbar__fill {
    position: relative;
    height: 100%;
    border-radius: var(--pc-radius-full);
    background: var(--bar-color, var(--pc-blue-500));
    box-shadow: var(--pc-bar-shadow);
    transition: width var(--pc-duration-chart) var(--pc-easing-default),
                box-shadow var(--pc-duration-fast);
    transform-origin: left center;
}

/* Top highlight for 3D effect */
.pc-hbar__fill::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: rgba(255, 255, 255, 0.25);
    border-radius: var(--pc-radius-full) var(--pc-radius-full) 0 0;
    pointer-events: none;
}

.pc-hbar__row:hover .pc-hbar__fill {
    box-shadow: var(--pc-bar-shadow-hover);
    transform: scaleY(1.1);
}

.pc-hbar__value {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--pc-text);
    text-align: left;
    font-variant-numeric: tabular-nums;
}

/* Tooltip on hover - ONLY show when data-tooltip has actual content */
.pc-hbar__fill[data-tooltip]:not([data-tooltip=""])::before {
    content: attr(data-tooltip);
    position: absolute;
    top: -36px;
    left: 50%;
    transform: translateX(-50%) scale(0.85);
    padding: 6px 12px;
    background: #1F2937;
    color: #FFFFFF;
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: var(--pc-radius-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: 
        opacity var(--pc-duration-fast) ease-out,
        transform var(--pc-duration-fast) ease-out,
        visibility var(--pc-duration-fast);
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Tooltip arrow */
.pc-hbar__fill[data-tooltip]:not([data-tooltip=""])::after {
    content: "";
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: #1F2937 transparent transparent transparent;
    opacity: 0;
    visibility: hidden;
    transition: 
        opacity var(--pc-duration-fast) ease-out,
        visibility var(--pc-duration-fast);
    z-index: 100;
}

.pc-hbar__row:hover .pc-hbar__fill[data-tooltip]:not([data-tooltip=""])::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) scale(1);
}

.pc-hbar__row:hover .pc-hbar__fill[data-tooltip]:not([data-tooltip=""])::after {
    opacity: 1;
    visibility: visible;
}

/* Dark mode tooltip */
[data-theme="dark"] .pc-hbar__fill[data-tooltip]:not([data-tooltip=""])::before {
    background: #F1F5F9;
    color: #0F172A;
}

[data-theme="dark"] .pc-hbar__fill[data-tooltip]:not([data-tooltip=""])::after {
    border-color: #F1F5F9 transparent transparent transparent;
}

/* ==========================================================================
   3D VERTICAL BAR CHART
   ========================================================================== */

.pc-vbar {
    --chart-height: 250px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: var(--pc-spacing-lg);
    height: var(--chart-height);
    padding: var(--pc-spacing-md) var(--pc-spacing-sm);
    position: relative;
}

/* Y-axis grid lines - NO GRADIENTS (design system compliance) */
.pc-vbar::before {
    content: "";
    position: absolute;
    inset: var(--pc-spacing-md);
    /* Removed repeating-linear-gradient - use solid borders on bars instead */
    pointer-events: none;
    z-index: 0;
    display: none; /* Hide pseudo-element - gridlines handled by bar styling */
}

.pc-vbar__group {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    max-width: 80px;
    min-width: 40px;
    height: 100%;
    position: relative;
    z-index: 1;
}

.pc-vbar__bar {
    width: 100%;
    max-width: 60px;
    margin-top: auto;
    background: var(--bar-color, var(--pc-blue-500));
    border-radius: var(--pc-radius-md) var(--pc-radius-md) 0 0;
    position: relative;
    cursor: pointer;
    box-shadow: var(--pc-bar-shadow);
    transition: height var(--pc-duration-chart) var(--pc-easing-default),
                transform var(--pc-duration-fast),
                box-shadow var(--pc-duration-fast);
    transform-origin: bottom center;
}

/* 3D top highlight */
.pc-vbar__bar::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--pc-radius-md) var(--pc-radius-md) 0 0;
    pointer-events: none;
}

/* 3D side edge */
.pc-vbar__bar::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 4px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 0 var(--pc-radius-md) 0 0;
    pointer-events: none;
}

.pc-vbar__group:hover .pc-vbar__bar {
    transform: scaleX(1.05) scaleY(1.02);
    box-shadow: var(--pc-bar-shadow-hover);
}

.pc-vbar__bar:focus-visible {
    outline: 3px solid var(--pc-blue-500);
    outline-offset: 2px;
}

.pc-vbar__label {
    margin-top: var(--pc-spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--pc-text);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

/* Value tooltip - explicit colors for reliability */
.pc-vbar__value {
    position: absolute;
    top: -32px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 12px;
    background: #1F2937;
    color: #FFFFFF;
    font-size: 0.8125rem;
    font-weight: 700;
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: 
        opacity var(--pc-duration-fast, 150ms) ease-out,
        visibility var(--pc-duration-fast, 150ms);
    pointer-events: none;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Dark mode tooltip */
[data-theme="dark"] .pc-vbar__value {
    background: #F1F5F9;
    color: #0F172A;
}

.pc-vbar__group:hover .pc-vbar__value {
    opacity: 1;
    visibility: visible;
}

/* ==========================================================================
   PROGRESS RING (DONUT)
   ========================================================================== */

.pc-ring {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--pc-spacing-lg);
}

.pc-ring__visual {
    position: relative;
    width: 180px;
    height: 180px;
}

.pc-ring__svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.pc-ring__track {
    fill: none;
    stroke: var(--pc-surface-elevated);
    stroke-width: 16;
}

.pc-ring__progress {
    fill: none;
    stroke: var(--ring-color, var(--pc-blue-500));
    stroke-width: 16;
    stroke-linecap: round;
    stroke-dasharray: 0 502.65; /* 2 * PI * 80 */
    transition: stroke-dasharray var(--pc-duration-chart) var(--pc-easing-default);
}

/* Animated state */
.pc-ring__progress.pc-animated {
    stroke-dasharray: var(--ring-dasharray, 0 502.65);
}

.pc-ring__center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.pc-ring__value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--ring-color, var(--pc-blue-500));
    line-height: 1;
}

.pc-ring__label {
    font-size: 0.875rem;
    color: var(--pc-text-secondary);
    margin-top: var(--pc-spacing-xs);
}

.pc-ring__legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--pc-spacing-md);
}

.pc-ring__legend-item {
    display: flex;
    align-items: center;
    gap: var(--pc-spacing-xs);
    font-size: 0.875rem;
    color: var(--pc-text);
}

.pc-ring__legend-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--pc-radius-full);
    flex-shrink: 0;
}

/* ==========================================================================
   COMPARISON TABLE
   ========================================================================== */

.pc-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.pc-table thead {
    background: var(--pc-blue-600);
    color: white;
}

.pc-table th {
    padding: var(--pc-spacing-md);
    font-weight: 600;
    text-align: left;
    white-space: nowrap;
}

.pc-table th:first-child {
    border-radius: var(--pc-radius-md) 0 0 0;
}

.pc-table th:last-child {
    border-radius: 0 var(--pc-radius-md) 0 0;
}

.pc-table td {
    padding: var(--pc-spacing-md);
    border-bottom: 1px solid var(--pc-border);
    color: var(--pc-text);
}

.pc-table tbody tr {
    transition: background var(--pc-duration-fast);
}

.pc-table tbody tr:hover {
    background: var(--pc-surface-hover);
}

.pc-table tbody tr:last-child td:first-child {
    border-radius: 0 0 0 var(--pc-radius-md);
}

.pc-table tbody tr:last-child td:last-child {
    border-radius: 0 0 var(--pc-radius-md) 0;
}

/* Status badges */
.pc-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--pc-spacing-xs);
    padding: var(--pc-spacing-xs) var(--pc-spacing-sm);
    border-radius: var(--pc-radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pc-badge--excellent {
    background: rgba(34, 197, 94, 0.15);
    color: var(--pc-green-500);
}

.pc-badge--good {
    background: rgba(59, 130, 246, 0.15);
    color: var(--pc-blue-500);
}

.pc-badge--average {
    background: rgba(245, 158, 11, 0.15);
    color: var(--pc-amber-500);
}

.pc-badge--poor {
    background: rgba(239, 68, 68, 0.15);
    color: var(--pc-red-500);
}

.pc-badge::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: var(--pc-radius-full);
    background: currentColor;
}

/* ==========================================================================
   SPARK LINES (Mini Charts)
   ========================================================================== */

.pc-spark {
    display: inline-flex;
    align-items: flex-end;
    gap: 2px;
    height: 24px;
    vertical-align: middle;
}

.pc-spark__bar {
    width: 4px;
    background: var(--pc-blue-500);
    border-radius: 2px 2px 0 0;
    transition: height var(--pc-duration-fast), background var(--pc-duration-fast);
}

.pc-spark__bar:hover {
    background: var(--pc-purple-500);
}

/* ==========================================================================
   CALLOUT / ANNOTATION BOX
   ========================================================================== */

.pc-callout {
    display: flex;
    gap: var(--pc-spacing-md);
    padding: var(--pc-spacing-lg);
    background: var(--pc-surface-elevated);
    border: 1px solid var(--pc-border);
    border-left: 4px solid var(--callout-color, var(--pc-blue-500));
    border-radius: var(--pc-radius-md);
    margin: var(--pc-spacing-lg) 0;
}

.pc-callout__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.pc-callout__content {
    flex: 1;
}

.pc-callout__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--pc-text);
    margin-bottom: var(--pc-spacing-xs);
}

.pc-callout__text {
    font-size: 0.875rem;
    color: var(--pc-text-secondary);
    line-height: 1.6;
    margin: 0;
}

.pc-callout--info { --callout-color: var(--pc-blue-500); }
.pc-callout--success { --callout-color: var(--pc-green-500); }
.pc-callout--warning { --callout-color: var(--pc-amber-500); }
.pc-callout--danger { --callout-color: var(--pc-red-500); }

/* ==========================================================================
   COLOR UTILITIES
   ========================================================================== */

.pc-blue { --bar-color: var(--pc-blue-500); --stat-color: var(--pc-blue-500); --ring-color: var(--pc-blue-500); }
.pc-indigo { --bar-color: var(--pc-indigo-500); --stat-color: var(--pc-indigo-500); --ring-color: var(--pc-indigo-500); }
.pc-purple { --bar-color: var(--pc-purple-500); --stat-color: var(--pc-purple-500); --ring-color: var(--pc-purple-500); }
.pc-pink { --bar-color: var(--pc-pink-500); --stat-color: var(--pc-pink-500); --ring-color: var(--pc-pink-500); }
.pc-red { --bar-color: var(--pc-red-500); --stat-color: var(--pc-red-500); --ring-color: var(--pc-red-500); }
.pc-orange { --bar-color: var(--pc-orange-500); --stat-color: var(--pc-orange-500); --ring-color: var(--pc-orange-500); }
.pc-amber { --bar-color: var(--pc-amber-500); --stat-color: var(--pc-amber-500); --ring-color: var(--pc-amber-500); }
.pc-yellow { --bar-color: var(--pc-yellow-500); --stat-color: var(--pc-yellow-500); --ring-color: var(--pc-yellow-500); }
.pc-lime { --bar-color: var(--pc-lime-500); --stat-color: var(--pc-lime-500); --ring-color: var(--pc-lime-500); }
.pc-green { --bar-color: var(--pc-green-500); --stat-color: var(--pc-green-500); --ring-color: var(--pc-green-500); }
.pc-emerald { --bar-color: var(--pc-emerald-500); --stat-color: var(--pc-emerald-500); --ring-color: var(--pc-emerald-500); }
.pc-teal { --bar-color: var(--pc-teal-500); --stat-color: var(--pc-teal-500); --ring-color: var(--pc-teal-500); }
.pc-cyan { --bar-color: var(--pc-cyan-500); --stat-color: var(--pc-cyan-500); --ring-color: var(--pc-cyan-500); }
.pc-sky { --bar-color: var(--pc-sky-500); --stat-color: var(--pc-sky-500); --ring-color: var(--pc-sky-500); }
.pc-slate { --bar-color: var(--pc-slate-500); --stat-color: var(--pc-slate-500); --ring-color: var(--pc-slate-500); }

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

/* Large Tablet */
@media (max-width: 1024px) {
    .pc-chart {
        padding: var(--pc-spacing-lg);
    }
    
    .pc-stats--4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pc-hbar__row {
        grid-template-columns: minmax(80px, 120px) 1fr minmax(45px, 60px);
    }
    
    .pc-vbar {
        --chart-height: 200px;
        gap: var(--pc-spacing-md);
    }
    
    .pc-stat__value {
        font-size: 2.25rem;
    }
}

/* Tablet */
@media (max-width: 768px) {
    .pc-chart {
        padding: var(--pc-spacing-md);
        border-radius: var(--pc-radius-lg);
    }
    
    .pc-chart__header {
        flex-direction: column;
        gap: var(--pc-spacing-sm);
    }
    
    .pc-chart__title {
        font-size: 1.25rem;
    }
    
    .pc-stats--3,
    .pc-stats--4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pc-hbar__row {
        grid-template-columns: minmax(60px, 100px) 1fr minmax(40px, 55px);
        gap: var(--pc-spacing-sm);
    }
    
    .pc-hbar__label {
        font-size: 0.75rem;
    }
    
    .pc-vbar {
        --chart-height: 180px;
    }
    
    .pc-ring__visual {
        width: 150px;
        height: 150px;
    }
    
    .pc-ring__value {
        font-size: 2rem;
    }
    
    .pc-table {
        display: block;
        overflow-x: auto;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .pc-chart {
        margin: var(--pc-spacing-md) auto;
        padding: var(--pc-spacing-sm);
        border-radius: var(--pc-radius-md);
    }
    
    .pc-stats--2,
    .pc-stats--3,
    .pc-stats--4 {
        grid-template-columns: 1fr;
    }
    
    .pc-stat {
        padding: var(--pc-spacing-md);
    }
    
    .pc-stat__value {
        font-size: 2rem;
    }
    
    .pc-hbar__row {
        grid-template-columns: 1fr;
        gap: var(--pc-spacing-xs);
    }
    
    .pc-hbar__label {
        text-align: left;
        font-weight: 600;
    }
    
    .pc-hbar__track {
        height: 20px;
    }
    
    .pc-hbar__value {
        position: absolute;
        right: 8px;
        top: 50%;
        transform: translateY(-50%);
        font-size: 0.75rem;
        color: white;
        text-shadow: 0 1px 2px rgba(0,0,0,0.3);
    }
    
    .pc-vbar {
        --chart-height: 150px;
        gap: var(--pc-spacing-sm);
    }
    
    .pc-vbar__label {
        font-size: 0.65rem;
    }
    
    .pc-callout {
        flex-direction: column;
        gap: var(--pc-spacing-sm);
    }
}

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

@media (prefers-reduced-motion: reduce) {
    .pc-stat::before,
    .pc-stat,
    .pc-hbar__fill,
    .pc-vbar__bar,
    .pc-ring__progress,
    .pc-stat__value[data-value] {
        transition: none !important;
        animation: none !important;
    }
    
    .pc-stat:hover,
    .pc-hbar__row:hover .pc-hbar__fill,
    .pc-vbar__group:hover .pc-vbar__bar {
        transform: none !important;
    }
}

/* Focus visible states */
.pc-stat:focus-visible,
.pc-hbar__fill:focus-visible,
.pc-vbar__bar:focus-visible {
    outline: 3px solid var(--pc-blue-500);
    outline-offset: 2px;
}

/* Screen reader only */
.pc-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    .pc-chart {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        break-inside: avoid;
        page-break-inside: avoid;
    }
    
    .pc-hbar__fill,
    .pc-vbar__bar,
    .pc-ring__progress {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
    
    .pc-stat:hover,
    .pc-hbar__row:hover .pc-hbar__fill,
    .pc-vbar__group:hover .pc-vbar__bar {
        transform: none !important;
    }
}