src/index.css

/* ===== BranchChat Design System ===== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Background layers */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a26;
  --bg-elevated: #22222e;
  --bg-hover: #2a2a38;

  /* Text */
  --text-primary: #e8e8f0;
  --text-secondary: #9898a8;
  --text-tertiary: #686878;
  --text-inverse: #0a0a0f;

  /* Accent — Cyan-Teal */
  --accent: #00d4aa;
  --accent-hover: #00e8bb;
  --accent-dim: rgba(0, 212, 170, 0.15);
  --accent-glow: rgba(0, 212, 170, 0.3);

  /* Branch colors */
  --branch-main: #00d4aa;
  --branch-active: #6c7aff;
  --branch-alt: #ff6c8a;
  --branch-dim: #555566;

  /* Status */
  --status-generating: #f0c040;
  --status-error: #ff4466;
  --status-success: #00d4aa;

  /* Glass */
  --glass-bg: rgba(18, 18, 26, 0.85);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);

  /* Sizing */
  --sidebar-width: 280px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-medium: 250ms ease;
  --transition-slow: 400ms ease;
}

/* --- Reset & Global --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body, #root {
  height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* --- Layout --- */
.app-layout {
  display: flex;
  height: 100%;
  width: 100%;
}

/* --- Sidebar --- */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100%;
  background: var(--bg-secondary);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-medium), min-width var(--transition-medium), width var(--transition-medium);
  z-index: 10;
}

.sidebar.collapsed {
  width: 0;
  min-width: 0;
  transform: translateX(calc(-1 * var(--sidebar-width)));
}

.sidebar-header {
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--glass-border);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.3px;
}

.sidebar-logo .logo-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--accent), #6c7aff);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

.new-chat-btn {
  width: 100%;
  padding: 10px 16px;
  margin: 12px 16px;
  width: calc(100% - 32px);
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(0, 212, 170, 0.2);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}

.new-chat-btn:hover {
  background: rgba(0, 212, 170, 0.25);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.conversation-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.conversation-item {
  padding: 10px 12px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2px;
}

.conversation-item:hover {
  background: var(--bg-hover);
}

.conversation-item.active {
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 170, 0.15);
}

.conversation-item-title {
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.conversation-item-time {
  font-size: 11px;
  color: var(--text-tertiary);
  white-space: nowrap;
}

.conversation-item-delete {
  opacity: 0;
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  margin-left: 4px;
}

.conversation-item:hover .conversation-item-delete {
  opacity: 1;
}

.conversation-item-delete:hover {
  color: var(--status-error);
  background: rgba(255, 68, 102, 0.1);
}

/* Sidebar model status */
.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}

.model-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.model-status-dot.ready {
  background: var(--status-success);
  box-shadow: 0 0 8px var(--accent-glow);
}

.model-status-dot.loading {
  background: var(--status-generating);
  animation: pulse 1.5s ease infinite;
}

.model-status-dot.error {
  background: var(--status-error);
}

.model-status-dot.unloaded {
  background: var(--text-tertiary);
}

/* --- Main Content --- */
.main-content {
  flex: 1;
  display: flex;
  height: 100%;
  min-width: 0;
}

/* --- Chat Pane --- */
.chat-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-width: 0;
  position: relative;
}

.chat-header {
  padding: 12px 20px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-secondary);
  z-index: 5;
}

.sidebar-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 18px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.chat-header-title {
  font-size: 14px;
  font-weight: 600;
  flex: 1;
}

.branch-indicator {
  font-size: 11px;
  padding: 3px 10px;
  background: var(--bg-tertiary);
  border-radius: 100px;
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--text-tertiary);
}

.chat-empty-icon {
  font-size: 48px;
  opacity: 0.3;
}

.chat-empty h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-secondary);
}

.chat-empty p {
  font-size: 13px;
  max-width: 360px;
  text-align: center;
  line-height: 1.7;
}

/* Message bubbles */
.message-row {
  display: flex;
  gap: 12px;
  padding: 8px 0;
  position: relative;
  animation: messageIn 0.3s ease;
}

.message-row.user {
  justify-content: flex-end;
}

.message-row.assistant {
  justify-content: flex-start;
}

.message-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  margin-top: 2px;
}

.message-avatar.user {
  background: linear-gradient(135deg, #6c7aff, #a855f7);
  order: 2;
}

.message-avatar.assistant {
  background: linear-gradient(135deg, var(--accent), #00a888);
}

.message-content {
  max-width: 70%;
  min-width: 80px;
}

.message-bubble {
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 13.5px;
  line-height: 1.7;
  position: relative;
  word-wrap: break-word;
}

.message-bubble.user {
  background: linear-gradient(135deg, rgba(108, 122, 255, 0.15), rgba(168, 85, 247, 0.1));
  border: 1px solid rgba(108, 122, 255, 0.15);
  border-bottom-right-radius: var(--radius-sm);
}

.message-bubble.assistant {
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  border-bottom-left-radius: var(--radius-sm);
}

.message-bubble.generating {
  border-color: var(--status-generating);
  border-style: solid;
}

.message-bubble.generating::after {
  content: '▍';
  animation: blink 1s step-end infinite;
  color: var(--status-generating);
  margin-left: 2px;
}

.message-bubble.error {
  border-color: var(--status-error);
}

/* Branch button on message */
.message-actions {
  display: flex;
  gap: 4px;
  margin-top: 6px;
  align-items: center;
}

.branch-btn {
  opacity: 0;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  display: flex;
  align-items: center;
  gap: 4px;
}

.message-row:hover .branch-btn {
  opacity: 1;
}

.branch-btn:hover {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: rgba(0, 212, 170, 0.3);
}

.branch-count {
  font-size: 10px;
  padding: 2px 7px;
  background: var(--bg-tertiary);
  border-radius: 100px;
  color: var(--text-tertiary);
  border: 1px solid var(--glass-border);
}

/* Chat input */
.chat-input-area {
  padding: 16px 20px;
  border-top: 1px solid var(--glass-border);
  background: var(--bg-secondary);
}

.chat-input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 6px 6px 6px 16px;
  transition: border-color var(--transition-fast);
}

.chat-input-wrapper:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.chat-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
  resize: none;
  max-height: 120px;
  min-height: 24px;
  padding: 6px 0;
}

.chat-input::placeholder {
  color: var(--text-tertiary);
}

.send-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: var(--text-inverse);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.send-btn:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: scale(1.05);
}

.send-btn:disabled {
  background: var(--bg-hover);
  color: var(--text-tertiary);
  cursor: not-allowed;
}

/* --- Tree View Panel --- */
.tree-pane {
  width: 420px;
  min-width: 300px;
  height: 100%;
  background: var(--bg-secondary);
  border-left: 1px solid var(--glass-border);
  position: relative;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-medium);
}

/* Fullscreen mode */
.tree-pane-fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100% !important;
  min-width: 100% !important;
  z-index: 50;
  border-left: none;
  animation: fadeIn 0.2s ease;
}

.tree-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--glass-border);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tree-header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.tree-action-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-size: 14px;
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
}

.tree-action-btn:hover {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: rgba(0, 212, 170, 0.3);
}

.tree-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.tree-empty {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

/* 3D Graph tooltip */
.graph-tooltip {
  background: var(--glass-bg) !important;
  backdrop-filter: blur(12px) !important;
  border: 1px solid var(--glass-border) !important;
  border-radius: var(--radius-md) !important;
  padding: 12px 16px !important;
  box-shadow: var(--glass-shadow) !important;
  max-width: 320px !important;
  font-family: 'Inter', sans-serif !important;
  color: var(--text-primary) !important;
  font-size: 12px !important;
  line-height: 1.5 !important;
  pointer-events: none;
}

.graph-tooltip .tooltip-role {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
  margin-bottom: 4px;
}

.graph-tooltip .tooltip-role.user {
  color: #6c7aff;
}

.graph-tooltip .tooltip-role.assistant {
  color: var(--accent);
}

.graph-tooltip .tooltip-text {
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
}

/* --- Graph Node Labels (CSS2D) --- */
.graph-node-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  pointer-events: none;
  user-select: none;
  text-align: center;
  white-space: nowrap;
}

.graph-node-turn {
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.graph-node-preview {
  font-family: 'Inter', sans-serif;
  font-size: 9px;
  color: rgba(232, 232, 240, 0.5);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --- Graph Legend --- */
.graph-legend {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(18, 18, 26, 0.88);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 11px;
  color: var(--text-secondary);
  pointer-events: auto;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.graph-legend-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-tertiary);
  margin-bottom: 2px;
}

.graph-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
}

.graph-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.graph-legend-diamond {
  width: 8px;
  height: 8px;
  background: #ff6c8a;
  transform: rotate(45deg);
  flex-shrink: 0;
}

/* --- Branch Dialog / Modal --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.2s ease;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  width: 520px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  animation: slideUp 0.3s ease;
}

.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--glass-border);
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.modal-header p {
  font-size: 12px;
  color: var(--text-secondary);
}

.modal-body {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.modal-textarea {
  width: 100%;
  min-height: 80px;
  padding: 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition-fast);
}

.modal-textarea:focus {
  border-color: var(--accent);
}

.modal-info {
  padding: 10px 14px;
  background: rgba(240, 192, 64, 0.08);
  border: 1px solid rgba(240, 192, 64, 0.15);
  border-radius: var(--radius-md);
  font-size: 12px;
  color: var(--status-generating);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.modal-footer {
  padding: 16px 24px 20px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.btn-secondary {
  padding: 8px 18px;
  background: var(--bg-tertiary);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.btn-primary {
  padding: 8px 18px;
  background: var(--accent);
  color: var(--text-inverse);
  border: none;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* --- Model Loader Overlay --- */
.model-loader-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: fadeIn 0.3s ease;
}

.model-loader-card {
  width: 480px;
  max-width: 90vw;
  text-align: center;
}

.model-loader-icon {
  font-size: 48px;
  margin-bottom: 24px;
  animation: float 3s ease infinite;
}

.model-loader-card h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent), #6c7aff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.model-loader-card p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.progress-bar-track {
  width: 100%;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 20px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #6c7aff);
  border-radius: 3px;
  transition: width 0.4s ease;
}

.progress-percent {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.model-loader-steps {
  margin-top: 20px;
  text-align: left;
  max-height: 200px;
  overflow-y: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
}

.model-loader-step {
  font-size: 11px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  color: var(--text-secondary);
  padding: 2px 0;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  animation: messageIn 0.2s ease;
}

.model-loader-step::before {
  content: '›';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

.model-loader-step:last-child {
  color: var(--text-primary);
}

/* --- Context Menu --- */
.context-menu {
  position: fixed;
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  padding: 4px;
  z-index: 150;
  min-width: 180px;
  animation: fadeIn 0.15s ease;
}

.context-menu-item {
  padding: 8px 14px;
  font-size: 12px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  background: none;
  border: none;
  width: 100%;
  color: var(--text-primary);
  font-family: inherit;
  text-align: left;
}

.context-menu-item:hover {
  background: var(--accent-dim);
  color: var(--accent);
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes messageIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--glass-border);
  border-top-color: var(--status-generating);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .tree-pane {
    display: none;
  }
}

@media (max-width: 600px) {
  .sidebar {
    position: absolute;
    height: 100%;
    z-index: 20;
  }
  .sidebar.collapsed {
    transform: translateX(calc(-1 * var(--sidebar-width)));
  }
}

/* --- Onboarding Tour --- */
.onboarding-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 300;
  pointer-events: none;
}

.onboarding-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: auto;
  z-index: 301;
}

/* SVG-like spotlight: dark overlay with a transparent cutout */
.onboarding-backdrop::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: -1;
}

.onboarding-spotlight {
  position: absolute;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.7);
  border: 2px solid var(--accent);
  z-index: 302;
  pointer-events: none;
  transition: all var(--transition-medium);
  animation: spotlightPulse 2s ease infinite;
}

@keyframes spotlightPulse {
  0%, 100% { border-color: var(--accent); box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.7), 0 0 20px rgba(0, 212, 170, 0.2); }
  50% { border-color: var(--accent-hover); box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.7), 0 0 30px rgba(0, 212, 170, 0.35); }
}

.onboarding-backdrop-solid {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  pointer-events: auto;
  z-index: 301;
}

.onboarding-tooltip {
  width: 360px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 28px 24px 20px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 212, 170, 0.08);
  z-index: 310;
  pointer-events: auto;
  animation: slideUp 0.35s ease;
}

.onboarding-tooltip-centered {
  max-width: 420px;
  width: 420px;
  text-align: center;
}

.onboarding-tooltip-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.onboarding-tooltip-centered .onboarding-tooltip-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.onboarding-tooltip-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.3;
}

.onboarding-tooltip-body {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.onboarding-tooltip-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.onboarding-dots {
  display: flex;
  gap: 5px;
}

.onboarding-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--bg-hover);
  transition: all var(--transition-fast);
}

.onboarding-dot.active {
  background: var(--accent);
  width: 18px;
  border-radius: 3px;
}

.onboarding-dot.done {
  background: rgba(0, 212, 170, 0.4);
}

.onboarding-actions {
  display: flex;
  gap: 6px;
}

.onboarding-btn {
  padding: 6px 14px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

.onboarding-btn-primary {
  background: var(--accent);
  color: var(--text-inverse);
}

.onboarding-btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.onboarding-btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
}

.onboarding-btn-secondary:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.onboarding-btn-skip {
  background: none;
  color: var(--text-tertiary);
}

.onboarding-btn-skip:hover {
  color: var(--text-secondary);
}

.onboarding-step-counter {
  position: absolute;
  top: 10px;
  right: 14px;
  font-size: 10px;
  color: var(--text-tertiary);
  font-weight: 600;
}