/* Glassmorphism Design System for Vibe Coding Tutor */

:root {
  /* Colors */
  --bg-gradient-start: #1a1a2e;
  --bg-gradient-end: #16213e;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-hover: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: rgba(0, 0, 0, 0.3);

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);

  --accent-primary: #00d9ff;
  --accent-secondary: #7c3aed;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  color: var(--text-primary);
  min-height: 100vh;
  overflow: hidden;
}

/* Glassmorphism Base Class */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px var(--glass-shadow);
}

/* App Layout */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: var(--space-md);
  gap: var(--space-md);
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
}

.app-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

/* Main Content */
.main-content {
  display: flex;
  flex: 1;
  gap: var(--space-md);
  overflow: hidden;
}

/* Tutor Panel */
.tutor-panel {
  width: 380px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-section {
  padding: var(--space-md);
  border-bottom: 1px solid var(--glass-border);
  overflow-y: auto;
}

.panel-section:last-child {
  border-bottom: none;
  flex: 1;
}

.panel-section h2 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

/* Code Panel */
.code-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

.code-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--glass-border);
  border-radius: 0;
  background: rgba(0, 0, 0, 0.2);
}

.code-panel iframe {
  flex: 1;
  width: 100%;
  border: none;
  background: #1e1e1e;
}

/* Connection Status */
.connection-status {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-warning);
  animation: pulse 2s infinite;
}

.connection-status.connected .status-dot {
  background: var(--accent-success);
  animation: none;
}

.connection-status.error .status-dot {
  background: var(--accent-danger);
  animation: none;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Competency Dashboard */
#competency-dashboard {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.competency-group {
  margin-bottom: var(--space-md);
}

.competency-group-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
}

.competency-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

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

.competency-id {
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--text-muted);
  width: 24px;
}

.competency-name {
  flex: 1;
  font-size: 0.75rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.competency-bar {
  width: 60px;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
}

.competency-bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width var(--transition-normal);
}

.competency-bar-fill.novice { background: var(--accent-danger); }
.competency-bar-fill.developing { background: var(--accent-warning); }
.competency-bar-fill.proficient { background: var(--accent-primary); }
.competency-bar-fill.mastered { background: var(--accent-success); }

/* Tutor Messages */
#tutor-messages {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-height: 200px;
  overflow-y: auto;
}

.message {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  line-height: 1.5;
}

.message.welcome {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(0, 217, 255, 0.2));
  border-inline-start: 3px solid var(--accent-primary);
}

.message.hint {
  background: rgba(245, 158, 11, 0.1);
  border-inline-start: 3px solid var(--accent-warning);
}

.message.success {
  background: rgba(16, 185, 129, 0.1);
  border-inline-start: 3px solid var(--accent-success);
}

.message.error {
  background: rgba(239, 68, 68, 0.1);
  border-inline-start: 3px solid var(--accent-danger);
}

/* Prompt Trace */
#prompt-trace {
  font-size: 0.75rem;
}

.prompt-entry {
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.2);
  margin-bottom: var(--space-sm);
}

.prompt-entry-header {
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.prompt-entry-text {
  color: var(--text-secondary);
  font-family: 'Monaco', 'Menlo', monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

.empty-state {
  color: var(--text-muted);
  font-style: italic;
  text-align: center;
  padding: var(--space-lg);
}

/* Buttons */
.btn {
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-small {
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 217, 255, 0.3);
}

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

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

/* Badge */
.badge {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal-overlay.hidden {
  display: none;
}

.modal {
  width: 90%;
  max-width: 500px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.modal-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-lg);
}

.modal-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ============ Chat Interface ============ */

/* Panel Tabs */
.panel-tabs {
  display: flex;
  border-bottom: 1px solid var(--glass-border);
  padding: 0;
}

.panel-tab {
  flex: 1;
  padding: var(--space-sm) var(--space-md);
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.panel-tab:hover {
  color: var(--text-secondary);
  background: var(--glass-bg-hover);
}

.panel-tab.active {
  color: var(--accent-primary);
  border-bottom: 2px solid var(--accent-primary);
}

.panel-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-content.hidden {
  display: none;
}

/* Chat Container */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.chat-message {
  display: flex;
  gap: var(--space-sm);
  max-width: 100%;
}

.chat-message.user {
  flex-direction: row-reverse;
}

.chat-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: 600;
  flex-shrink: 0;
}

.chat-message.user .chat-avatar {
  background: var(--accent-secondary);
  color: white;
}

.chat-message.assistant .chat-avatar {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
}

.chat-message.error .chat-avatar {
  background: var(--accent-danger);
  color: white;
}

.chat-bubble {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  max-width: calc(100% - 44px);
  font-size: 0.875rem;
  line-height: 1.5;
}

.chat-message.user .chat-bubble {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.3), rgba(0, 217, 255, 0.2));
  border-color: rgba(124, 58, 237, 0.3);
}

.chat-bubble.error {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--accent-danger);
  color: var(--accent-danger);
}

.chat-bubble p {
  margin-bottom: var(--space-sm);
}

.chat-bubble p:last-child {
  margin-bottom: 0;
}

.chat-bubble ul, .chat-bubble ol {
  margin: var(--space-sm) 0;
  padding-left: var(--space-lg);
}

.chat-bubble li {
  margin-bottom: var(--space-xs);
}

.chat-bubble pre {
  background: rgba(0, 0, 0, 0.3);
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin: var(--space-sm) 0;
  font-size: 0.75rem;
}

.chat-bubble code {
  font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
  font-size: 0.8em;
  background: rgba(0, 0, 0, 0.2);
  padding: 2px 4px;
  border-radius: 3px;
}

.chat-bubble pre code {
  background: none;
  padding: 0;
}

.chat-bubble h2, .chat-bubble h3 {
  font-size: 0.875rem;
  margin: var(--space-md) 0 var(--space-sm);
  color: var(--accent-primary);
}

.chat-bubble h2:first-child, .chat-bubble h3:first-child {
  margin-top: 0;
}

/* Chat Input */
.chat-input-container {
  padding: var(--space-sm);
  border-top: 1px solid var(--glass-border);
}

.chat-actions {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.chat-action-btn {
  padding: var(--space-xs) var(--space-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.625rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.chat-action-btn.active {
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.2), rgba(124, 58, 237, 0.2));
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.chat-input-wrapper {
  display: flex;
  gap: var(--space-sm);
}

#chat-input {
  flex: 1;
  padding: var(--space-sm);
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: inherit;
  resize: none;
  outline: none;
}

#chat-input:focus {
  border-color: var(--accent-primary);
}

#chat-input::placeholder {
  color: var(--text-muted);
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: var(--space-xs) 0;
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-primary);
  animation: typing 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  30% {
    transform: translateY(-4px);
    opacity: 1;
  }
}

/* LLM Status Badge */
.llm-badge {
  font-size: 0.625rem;
}

.llm-badge.enabled {
  background: rgba(16, 185, 129, 0.2);
  border-color: var(--accent-success);
  color: var(--accent-success);
}

.llm-badge.disabled {
  background: rgba(239, 68, 68, 0.2);
  border-color: var(--accent-danger);
  color: var(--accent-danger);
}