/* 自動跟隨深淺色系統主題 */
:root {
  --bg-page: #0f172a;
  --bg-header: #1e293b;
  --bg-footer: #1e293b;
  --bg-canvas-wrapper: #000000;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border: #334155;
  --badge-online: #10b981;
  --badge-step: #3b82f6;
  --badge-wait: #f59e0b;
  --btn-primary: #3b82f6;
  --btn-primary-hover: #2563eb;
  --btn-secondary: #475569;
  --radius: 6px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-page: #f1f5f9;
    --bg-header: #ffffff;
    --bg-footer: #ffffff;
    --bg-canvas-wrapper: #1e293b;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #cbd5e1;
    --btn-secondary: #94a3b8;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.activity-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background-color: var(--bg-header);
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
  gap: 1rem;
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow: hidden;
  white-space: nowrap;
}

.header-right {
  display: flex;
  align-items: center;
  overflow: hidden;
  max-width: 40%;
}

.badge {
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.6875rem;
  text-transform: uppercase;
}

.badge-connecting {
  background-color: var(--badge-wait);
  color: #ffffff;
}

.badge-live {
  background-color: var(--badge-online);
  color: #ffffff;
}

.badge-ended {
  background-color: #ef4444;
  color: #ffffff;
}

.badge-step {
  background-color: var(--badge-step);
  color: #ffffff;
}

.task-title {
  font-weight: 500;
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
}

.url-text {
  font-family: monospace;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stream-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-canvas-wrapper);
  padding: 0.25rem;
  position: relative;
  overflow: hidden;
}

.canvas-wrapper {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}

#screencast-canvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: var(--radius);
  background-color: #000;
  cursor: crosshair;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  color: #f8fafc;
  font-size: 0.875rem;
  border-radius: var(--radius);
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.loading-overlay.hidden {
  opacity: 0;
  display: none;
}

.spinner {
  width: 2.5rem;
  height: 2.5rem;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top-color: #3b82f6;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* 點擊漣漪動畫 */
.click-indicator {
  position: absolute;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.6);
  border: 2px solid #ffffff;
  transform: translate(-50%, -50%) scale(0);
  pointer-events: none;
  opacity: 0;
  transition: transform 0.25s ease-out, opacity 0.25s ease-out;
}

.click-indicator.active {
  transform: translate(-50%, -50%) scale(1.5);
  opacity: 1;
}

/* 底部工具列 */
.footer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background-color: var(--bg-footer);
  border-top: 1px solid var(--border);
  gap: 1rem;
  flex-shrink: 0;
  font-size: 0.8125rem;
}

.toolbar-hint {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  white-space: nowrap;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  max-width: 500px;
}

#manual-text-input {
  flex: 1;
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background-color: var(--bg-page);
  color: var(--text-main);
  font-size: 0.8125rem;
  outline: none;
}

#manual-text-input:focus {
  border-color: var(--btn-primary);
}

.btn {
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  border: none;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease;
}

.btn-primary {
  background-color: var(--btn-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--btn-primary-hover);
}

.btn-secondary {
  background-color: var(--btn-secondary);
  color: #ffffff;
}

.btn-secondary:hover {
  opacity: 0.9;
}