/**
 * Canoe Timing Design System - Log Component
 *
 * Log viewer komponenta pro zobrazeni aplikacnich logu:
 * - log-container: scrollable kontejner
 * - log-entry: jednotliva log zprava
 * - level badges (debug/info/warn/error)
 * - component highlighting
 * - timestamp a auto-scroll
 */

/* ==========================================================================
   LOG CONTAINER
   ========================================================================== */

.log-container {
  display: flex;
  flex-direction: column;
  min-height: 200px;
  max-height: 500px;
  overflow-y: auto;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: var(--leading-relaxed);
}

/* Full-height variant */
.log-container.log-fullheight {
  max-height: none;
  flex: 1;
}

/* Fixed height variants */
.log-container.log-sm {
  max-height: 200px;
}

.log-container.log-md {
  max-height: 400px;
}

.log-container.log-lg {
  max-height: 600px;
}

/* Scroll shadow indicators */
.log-container::before,
.log-container::after {
  content: '';
  position: sticky;
  left: 0;
  right: 0;
  height: 16px;
  pointer-events: none;
  flex-shrink: 0;
  z-index: 1;
}

.log-container::before {
  top: 0;
  background: linear-gradient(
    to bottom,
    var(--color-bg-primary),
    transparent
  );
}

.log-container::after {
  bottom: 0;
  background: linear-gradient(
    to top,
    var(--color-bg-primary),
    transparent
  );
}

/* ==========================================================================
   LOG ENTRY
   ========================================================================== */

.log-entry {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: 3px var(--space-3);
}

.log-entry:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Timestamp */
.log-timestamp {
  flex-shrink: 0;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

/* Level - lehký styl */
.log-level {
  flex-shrink: 0;
  min-width: 40px;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
}

.log-level-debug {
  color: var(--color-text-muted);
}

.log-level-info {
  color: var(--color-success);
}

.log-level-warn {
  color: var(--color-warning);
}

.log-level-error {
  color: var(--color-error);
}

/* Component */
.log-component {
  flex-shrink: 0;
  color: var(--color-accent);
}

.log-component::before {
  content: '[';
  opacity: 0.5;
}

.log-component::after {
  content: ']';
  opacity: 0.5;
}

/* Message */
.log-message {
  flex: 1;
  min-width: 0;
  color: var(--color-text-primary);
  word-break: break-word;
  white-space: pre-wrap;
}

/* ==========================================================================
   LOG ENTRY VARIANTS
   ========================================================================== */

/* Error entry - subtle highlight */
.log-entry.log-entry-error {
  background-color: rgba(255, 59, 48, 0.05);
}

.log-entry.log-entry-error:hover {
  background-color: rgba(255, 59, 48, 0.1);
}

/* Warning entry - subtle highlight */
.log-entry.log-entry-warn {
  background-color: rgba(255, 149, 0, 0.05);
}

.log-entry.log-entry-warn:hover {
  background-color: rgba(255, 149, 0, 0.1);
}

/* Compact variant (no gaps, denser) */
.log-container.log-compact .log-entry {
  padding: var(--space-0-5) var(--space-2);
  gap: var(--space-1);
}

.log-container.log-compact .log-level {
  min-width: 40px;
  font-size: 9px;
}

.log-container.log-compact .log-component {
  min-width: 60px;
}

/* ==========================================================================
   LOG HEADER / TOOLBAR
   ========================================================================== */

.log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  position: sticky;
  top: 0;
  z-index: 2;
}

.log-header-title {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
}

.log-header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Filter buttons */
.log-filter {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-0-5) var(--space-2);
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.log-filter:hover {
  background-color: var(--color-bg-elevated);
  color: var(--color-text-primary);
}

.log-filter.active {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
}

.log-filter-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 var(--space-1);
  border-radius: var(--radius-full);
  background-color: var(--color-bg-elevated);
  font-size: 10px;
  font-weight: var(--font-weight-bold);
}

.log-filter.active .log-filter-count {
  background-color: rgba(255, 255, 255, 0.2);
}

/* Filter color variants - subtle level indication */
.log-filter-error {
  color: var(--color-error);
  border-color: rgba(255, 59, 48, 0.3);
}

.log-filter-error:hover {
  background-color: rgba(255, 59, 48, 0.1);
  border-color: var(--color-error);
}

.log-filter-error.active {
  background-color: var(--color-error);
  border-color: var(--color-error);
  color: white;
}

.log-filter-warn {
  color: var(--color-warning);
  border-color: rgba(255, 149, 0, 0.3);
}

.log-filter-warn:hover {
  background-color: rgba(255, 149, 0, 0.1);
  border-color: var(--color-warning);
}

.log-filter-warn.active {
  background-color: var(--color-warning);
  border-color: var(--color-warning);
  color: white;
}

.log-filter-info {
  color: var(--color-success);
  border-color: rgba(0, 210, 106, 0.3);
}

.log-filter-info:hover {
  background-color: rgba(0, 210, 106, 0.1);
  border-color: var(--color-success);
}

.log-filter-info.active {
  background-color: var(--color-success);
  border-color: var(--color-success);
  color: white;
}

.log-filter-debug {
  color: var(--color-text-muted);
  border-color: rgba(128, 128, 128, 0.3);
}

.log-filter-debug:hover {
  background-color: rgba(128, 128, 128, 0.1);
  border-color: var(--color-text-muted);
}

.log-filter-debug.active {
  background-color: var(--color-text-muted);
  border-color: var(--color-text-muted);
  color: white;
}

/* ==========================================================================
   LOG EMPTY STATE
   ========================================================================== */

.log-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  color: var(--color-text-muted);
  text-align: center;
}

.log-empty-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-3);
  opacity: 0.5;
}

.log-empty-text {
  font-size: var(--text-sm);
}

/* ==========================================================================
   LIVE INDICATOR
   ========================================================================== */

.log-live-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-success);
}

.log-live-indicator::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: var(--color-success);
  animation: log-live-pulse 2s ease-in-out infinite;
}

@keyframes log-live-pulse {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 4px var(--color-success);
  }
  50% {
    opacity: 0.5;
    box-shadow: 0 0 8px var(--color-success);
  }
}

/* ==========================================================================
   LIGHT THEME ADJUSTMENTS
   ========================================================================== */

.theme-light .log-entry.log-entry-error {
  background-color: rgba(220, 38, 38, 0.05);
}

.theme-light .log-entry.log-entry-error:hover {
  background-color: rgba(220, 38, 38, 0.1);
}

.theme-light .log-entry.log-entry-warn {
  background-color: rgba(217, 119, 6, 0.05);
}

.theme-light .log-entry.log-entry-warn:hover {
  background-color: rgba(217, 119, 6, 0.1);
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .log-live-indicator::before {
    animation: none;
  }
}