:root {
  /* Surface */
  --tt-bg: #fff;
  --tt-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  --tt-shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.18);

  /* Text */
  --tt-title-color: #111827;
  --tt-body-color: #4b5563;
  --tt-channel-color: #9ca3af;

  /* Accents */
  --tt-info: #3b82f6;
  --tt-warning: #f59e0b;
  --tt-error: #ef4444;
  --tt-loading: #6b7280;
  --tt-focus-ring: rgba(59, 130, 246, 0.5);

  /* Action buttons */
  --tt-action-bg: #f3f4f6;
  --tt-action-color: #374151;
  --tt-action-hover-bg: #e5e7eb;
  --tt-action-primary-bg: #3b82f6;
  --tt-action-primary-hover-bg: #2563eb;

  /* Spinner */
  --tt-spinner-track: #e5e7eb;
  --tt-spinner-fill: #6b7280;

  /* Progress & donut */
  --tt-progress-bg: rgba(0, 0, 0, 0.06);
  --tt-donut-track: rgba(0, 0, 0, 0.12);

  /* Overflow pill */
  --tt-overflow-color: #4b5563;
  --tt-overflow-hover-color: #111827;
  --tt-overflow-bg: #fff;
  --tt-overflow-border: rgba(0, 0, 0, 0.06);
  --tt-overflow-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.toast-container {
  position: fixed;
  z-index: 999999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  pointer-events: none;
  max-width: calc(100vw - 40px);
}

.toast-container[data-position='top-right'] {
  top: 20px;
  right: 20px;
}

.toast-container[data-position='top-left'] {
  top: 20px;
  left: 20px;
}

.toast-container[data-position='top-center'] {
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  align-items: center;
}

.toast-container[data-position='bottom-right'] {
  bottom: 20px;
  right: 20px;
  flex-direction: column-reverse;
}

.toast-container[data-position='bottom-left'] {
  bottom: 20px;
  left: 20px;
  flex-direction: column-reverse;
}

.toast-container[data-position='bottom-center'] {
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  align-items: center;
  flex-direction: column-reverse;
}

@media (max-width: 600px) {
  .toast-container {
    top: auto !important;
    bottom: 12px !important;
    left: 12px !important;
    right: 12px !important;
    transform: none !important;
    max-width: none;
    bottom: calc(12px + env(safe-area-inset-bottom, 0)) !important;
    padding-left: env(safe-area-inset-left, 0);
    padding-right: env(safe-area-inset-right, 0);
    flex-direction: column-reverse;
    align-items: stretch;
  }
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  max-width: 380px;
  padding: 12px 16px;
  border-radius: 8px;
  box-shadow: var(--tt-shadow);
  background: var(--tt-bg);
  border-left: 4px solid var(--tt-info);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  opacity: 0;
  transform: translateX(120%);
  transition:
    opacity 250ms ease,
    transform 250ms ease,
    box-shadow 250ms ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  user-select: none;
  touch-action: pan-y;
  -webkit-tap-highlight-color: transparent;
}

.toast:hover {
  box-shadow: var(--tt-shadow-hover);
}

.toast:focus-visible {
  outline: 2px solid var(--tt-focus-ring);
  outline-offset: 2px;
}

.toast.toast-show {
  opacity: 1;
  transform: translateX(0);
}

.toast.toast-hide {
  opacity: 0;
  transform: translateX(120%);
}

.toast.toast-dragging {
  transition: none;
  cursor: grabbing;
}

.toast-container[data-position$='-left'] .toast:not(.toast-show) {
  transform: translateX(-120%);
}

.toast-container[data-position$='-left'] .toast.toast-hide {
  transform: translateX(-120%);
}

.toast-container[data-position='top-center'] .toast:not(.toast-show) {
  transform: translateY(-120%);
}

.toast-container[data-position='top-center'] .toast.toast-hide {
  transform: translateY(-120%);
}

.toast-container[data-position='bottom-center'] .toast:not(.toast-show) {
  transform: translateY(120%);
}

.toast-container[data-position='bottom-center'] .toast.toast-hide {
  transform: translateY(120%);
}

@media (max-width: 600px) {
  .toast {
    min-width: 0;
    max-width: none;
    width: 100%;
    padding: 14px 16px;
    transform: translateY(120%);
  }

  .toast.toast-show {
    transform: translateY(0);
  }

  .toast.toast-hide {
    transform: translateY(120%);
  }
}

.toast.toast-info {
  border-left-color: var(--tt-info);
}

.toast.toast-info .toast-icon {
  color: var(--tt-info);
}

.toast.toast-warning {
  border-left-color: var(--tt-warning);
}

.toast.toast-warning .toast-icon {
  color: var(--tt-warning);
}

.toast.toast-error {
  border-left-color: var(--tt-error);
}

.toast.toast-error .toast-icon {
  color: var(--tt-error);
}

.toast.toast-loading {
  border-left-color: var(--tt-loading);
}

.toast.toast-loading .toast-icon {
  color: var(--tt-loading);
}

.toast-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 2px 0;
}

.toast-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--tt-title-color);
  margin: 0;
  line-height: 1.3;
  flex: 1;
  min-width: 0;
}

.toast-channel {
  font-style: italic;
  font-size: 11px;
  color: var(--tt-channel-color);
  font-weight: 400;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-body {
  font-size: 13px;
  color: var(--tt-body-color);
  margin: 0;
  line-height: 1.4;
  word-wrap: break-word;
}

@media (max-width: 600px) {
  .toast-body {
    font-size: 14px;
  }
}

.toast-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 14px;
}

.toast-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--tt-spinner-track);
  border-top-color: var(--tt-spinner-fill);
  border-radius: 50%;
  animation: toast-spin 0.8s linear infinite;
}

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

.toast-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.toast-action {
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition:
    background-color 0.15s ease,
    transform 0.1s ease;
  -webkit-tap-highlight-color: transparent;
}

.toast-action:active {
  transform: scale(0.97);
}

.toast-action:focus-visible {
  outline: 2px solid var(--tt-focus-ring);
  outline-offset: 1px;
}

.toast-action.toast-action-default {
  background: var(--tt-action-bg);
  color: var(--tt-action-color);
}

.toast-action.toast-action-default:hover {
  background: var(--tt-action-hover-bg);
}

.toast-action.toast-action-primary {
  background: var(--tt-action-primary-bg);
  color: #fff;
}

.toast-action.toast-action-primary:hover {
  background: var(--tt-action-primary-hover-bg);
}

.toast-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 3px;
  width: 100%;
  background: var(--tt-progress-bg);
  opacity: 0;
  transition: opacity 150ms ease;
}

@media (max-width: 600px) {
  .toast-progress {
    height: 4px;
  }
}

.toast.toast-has-timer .toast-progress {
  opacity: 1;
}

.toast-progress-fill {
  height: 100%;
  width: 0%;
  background: currentColor;
  opacity: 0.5;
}

.toast.toast-paused .toast-progress-fill {
  opacity: 0.3;
}

.toast.toast-info .toast-progress-fill {
  background: var(--tt-info);
}

.toast.toast-warning .toast-progress-fill {
  background: var(--tt-warning);
}

.toast.toast-error .toast-progress-fill {
  background: var(--tt-error);
}

.toast.toast-loading .toast-progress-fill {
  background: var(--tt-loading);
}

.toast-donut {
  width: 20px;
  height: 20px;
  display: block;
}

.toast-donut-track {
  stroke: var(--tt-donut-track);
}

.toast-donut-fill {
  stroke: currentColor;
  transition: stroke-dashoffset 200ms ease-out;
  stroke-linecap: round;
}

.toast.toast-info .toast-donut-fill {
  stroke: var(--tt-info);
}

.toast.toast-warning .toast-donut-fill {
  stroke: var(--tt-warning);
}

.toast.toast-error .toast-donut-fill {
  stroke: var(--tt-error);
}

.toast.toast-loading .toast-donut-fill {
  stroke: var(--tt-loading);
}

.toast-overflow {
  pointer-events: auto;
  align-self: flex-end;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 12px;
  font-weight: 500;
  color: var(--tt-overflow-color);
  background: var(--tt-overflow-bg);
  border: 1px solid var(--tt-overflow-border);
  box-shadow: var(--tt-overflow-shadow);
  border-radius: 999px;
  padding: 4px 10px;
  cursor: pointer;
  user-select: none;
  opacity: 0;
  transform: translateY(-4px);
  transition:
    opacity 250ms ease,
    transform 250ms ease;
}

.toast-overflow.toast-overflow-show {
  opacity: 1;
  transform: translateY(0);
}

.toast-overflow:hover {
  color: var(--tt-overflow-hover-color);
}

.toast-container[data-position$='-center'] .toast-overflow {
  align-self: center;
}

.toast-container[data-position$='-left'] .toast-overflow {
  align-self: flex-start;
}

@media (max-width: 600px) {
  .toast-overflow {
    align-self: center;
  }
}

/* Dark mode — system preference (unless .light is forced) */
@media (prefers-color-scheme: dark) {
  html:not(.light) {
    --tt-bg: #1f2937;
    --tt-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    --tt-shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.5);
    --tt-title-color: #f9fafb;
    --tt-body-color: #d1d5db;
    --tt-channel-color: #6b7280;
    --tt-action-bg: #374151;
    --tt-action-color: #d1d5db;
    --tt-action-hover-bg: #4b5563;
    --tt-spinner-track: #374151;
    --tt-spinner-fill: #9ca3af;
    --tt-progress-bg: rgba(255, 255, 255, 0.08);
    --tt-donut-track: rgba(255, 255, 255, 0.12);
    --tt-overflow-color: #d1d5db;
    --tt-overflow-hover-color: #f9fafb;
    --tt-overflow-bg: #1f2937;
    --tt-overflow-border: rgba(255, 255, 255, 0.08);
    --tt-overflow-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  }
}

/* Dark mode — forced via .dark class on <html> */
html.dark {
  --tt-bg: #1f2937;
  --tt-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  --tt-shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.5);
  --tt-title-color: #f9fafb;
  --tt-body-color: #d1d5db;
  --tt-channel-color: #6b7280;
  --tt-action-bg: #374151;
  --tt-action-color: #d1d5db;
  --tt-action-hover-bg: #4b5563;
  --tt-spinner-track: #374151;
  --tt-spinner-fill: #9ca3af;
  --tt-progress-bg: rgba(255, 255, 255, 0.08);
  --tt-donut-track: rgba(255, 255, 255, 0.12);
  --tt-overflow-color: #d1d5db;
  --tt-overflow-hover-color: #f9fafb;
  --tt-overflow-bg: #1f2937;
  --tt-overflow-border: rgba(255, 255, 255, 0.08);
  --tt-overflow-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

@media (prefers-reduced-motion: reduce) {
  .toast {
    transition: opacity 250ms ease;
    transform: none !important;
  }

  .toast.toast-show {
    transform: none !important;
  }

  .toast.toast-hide {
    transform: none !important;
  }

  .toast-overflow {
    transition: opacity 250ms ease;
    transform: none !important;
  }

  .toast-overflow.toast-overflow-show {
    transform: none !important;
  }

  .toast-spinner {
    animation-duration: 1.6s;
  }
}