/**
 * charts.css
 * BIXOR Exchange - Chart Components Styles
 *
 * Styles for MiniChart and PriceChart components
 */

/* ============================================================
 * Mini Chart Component
 * ============================================================ */

.mini-chart {
  display: block;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.mini-chart--fallback {
  /* Fallback styles when Chart.js is not available */
  opacity: 0.9;
}

/* ============================================================
 * Price Chart Component
 * ============================================================ */

.price-chart {
  width: 100%;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-base);
  padding: var(--spacing-4);
  margin-bottom: var(--spacing-4);
}

/* Time Range Selector */
.price-chart__time-range {
  display: flex;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-4);
  padding-bottom: var(--spacing-3);
  border-bottom: 1px solid var(--color-border);
}

.price-chart__time-btn {
  flex: 1;
  padding: var(--spacing-2) var(--spacing-3);
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: var(--transition-all-fast);
  -webkit-tap-highlight-color: transparent;
}

.price-chart__time-btn:hover {
  background-color: rgba(0, 168, 255, 0.1);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.price-chart__time-btn:active {
  transform: scale(0.98);
}

.price-chart__time-btn--active {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #ffffff;
}

.price-chart__time-btn--active:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff;
}

/* Chart Container */
.price-chart__container {
  position: relative;
  width: 100%;
  min-height: 200px;
}

.price-chart__canvas {
  width: 100% !important;
  height: 100% !important;
}

/* Loading State */
.price-chart__loader {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(26, 35, 50, 0.8);
  border-radius: var(--radius-base);
  z-index: 10;
}

.price-chart__loader .spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Error State */
.price-chart__error {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  text-align: center;
  padding: var(--spacing-4);
}

/* ============================================================
 * Responsive Design
 * ============================================================ */

@media (max-width: 767px) {
  .price-chart {
    padding: var(--spacing-3);
  }

  .price-chart__time-range {
    gap: var(--spacing-1);
  }

  .price-chart__time-btn {
    padding: var(--spacing-2);
    font-size: 12px;
  }
}

/* ============================================================
 * Chart.js Tooltip Customization
 * ============================================================ */

/* Override Chart.js default tooltip styles */
.chartjs-tooltip {
  opacity: 1 !important;
  background-color: rgba(30, 45, 61, 0.95) !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  border-radius: var(--radius-sm) !important;
  padding: var(--spacing-3) !important;
  font-family: var(--font-family-base) !important;
}

.chartjs-tooltip-key {
  display: none !important;
}

/* ============================================================
 * Accessibility
 * ============================================================ */

.price-chart__time-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .price-chart__time-btn {
    transition: none;
  }
  
  .price-chart__loader .spinner {
    animation: none;
    border-top-color: var(--color-accent);
  }
}

/* ============================================================
 * Dark Theme Optimization
 * ============================================================ */

/* Ensure chart canvas has proper background */
.price-chart__canvas {
  background-color: transparent;
}

/* Improve contrast for grid lines */
canvas {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}