/* CSS Variables */
:root {
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #252525;
  --text-primary: #e5e5e5;
  --text-secondary: #a0a0a0;
  --text-muted: #666;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --error: #ef4444;
  --border: #333;
  --border-light: #444;
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
}

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

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

[x-cloak] {
  display: none !important;
}

/* Login Screen */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.login-box h1 {
  margin: 0 0 8px 0;
  font-size: 24px;
  font-weight: 600;
}

.login-box p {
  margin: 0 0 24px 0;
  color: var(--text-secondary);
}

.login-box form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-box input {
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 16px;
  outline: none;
  transition: border-color var(--transition);
}

.login-box input:focus {
  border-color: var(--accent);
}

.login-box button {
  padding: 12px 16px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: white;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
}

.login-box button:hover:not(:disabled) {
  background: var(--accent-hover);
}

.login-box button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* App Container */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Stage Header */
.stage-header {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  position: relative;
}

.header-actions {
  position: absolute;
  top: 20px;
  right: 0;
  display: flex;
  gap: 8px;
}

.reset-button, .logout-button {
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
}

.reset-button:hover, .logout-button:hover {
  border-color: var(--border-light);
  color: var(--text-primary);
}

.logout-button:hover {
  border-color: var(--error);
  color: var(--error);
}

.stage-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.stage-tab {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  min-width: 65px;
  height: 44px;
}

.stage-tab:hover:not(:disabled) {
  border-color: var(--border-light);
  color: var(--text-primary);
}

.stage-tab:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.stage-tab.completed {
  border-color: var(--success);
  color: var(--success);
}

.stage-tab.active {
  border-color: var(--accent);
  color: var(--accent);
}

.stage-tab.viewing {
  background: var(--bg-tertiary);
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.stage-tab.awaiting {
  border-color: var(--warning);
  color: var(--warning);
}

.stage-tab.pending {
  color: var(--text-secondary);
  border-color: var(--border);
}

.stage-name {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stage-indicator {
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.checkmark {
  color: var(--success);
  font-size: 12px;
}

.awaiting-icon {
  color: var(--warning);
  font-size: 12px;
}

.pulse {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

/* Framework Panel */
.framework-panel {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.framework-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition);
}

.framework-toggle:hover {
  border-color: var(--border-light);
  color: var(--text-primary);
}

.framework-content {
  margin-top: 10px;
}

.framework-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.framework-tab {
  padding: 6px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition);
}

.framework-tab:hover,
.framework-tab.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
}

.framework-items {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  min-height: 40px;
}

.framework-item {
  padding: 4px 10px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  color: var(--text-primary);
  font-size: 12px;
}

/* Initial Input */
.initial-input {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 0;
}

.input-container {
  width: 100%;
  max-width: 600px;
}

.input-container h2 {
  margin: 0 0 8px 0;
  font-size: 28px;
  font-weight: 600;
}

.input-container p {
  margin: 0 0 20px 0;
  color: var(--text-secondary);
}

.input-container textarea {
  width: 100%;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 16px;
  font-family: inherit;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
}

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

.start-button {
  margin-top: 16px;
  padding: 14px 28px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: white;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
}

.start-button:hover:not(:disabled) {
  background: var(--accent-hover);
}

.start-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Workflow Content */
.workflow-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 20px 0;
  min-height: 0;
}

/* Stage Title */
.stage-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-shrink: 0;
}

.stage-title h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 500;
}

.stage-label {
  color: var(--text-secondary);
  margin-right: 8px;
}

.stage-status .status {
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 4px;
}

.status.streaming {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent);
}

.status.completed {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
}

.status.awaiting {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

/* Stage Output */
.stage-output {
  flex: 1;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow-y: auto;
  min-height: 200px;
}

.output-content {
  padding: 24px;
}

.markdown-content {
  font-size: 15px;
  line-height: 1.7;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4 {
  margin-top: 24px;
  margin-bottom: 12px;
}

.markdown-content h1:first-child,
.markdown-content h2:first-child,
.markdown-content h3:first-child {
  margin-top: 0;
}

.markdown-content p {
  margin: 0 0 16px 0;
}

.markdown-content ul, .markdown-content ol {
  margin: 0 0 16px 0;
  padding-left: 24px;
}

.markdown-content li {
  margin-bottom: 8px;
}

.markdown-content code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}

.markdown-content pre {
  background: var(--bg-tertiary);
  padding: 16px;
  border-radius: var(--radius);
  overflow-x: auto;
}

.markdown-content pre code {
  background: none;
  padding: 0;
}

.markdown-content blockquote {
  margin: 0 0 16px 0;
  padding: 12px 16px;
  border-left: 3px solid var(--accent);
  background: var(--bg-tertiary);
}

.markdown-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

.cursor {
  display: inline-block;
  width: 2px;
  height: 18px;
  background: var(--accent);
  margin-left: 2px;
  animation: blink 1s infinite;
  vertical-align: text-bottom;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* Personalization Input */
.personalization-input {
  margin-top: 20px;
  flex-shrink: 0;
}

.personalization-box {
  background: var(--bg-secondary);
  border: 1px solid var(--warning);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.personalization-box h3 {
  margin: 0 0 8px 0;
  font-size: 18px;
  color: var(--warning);
}

.personalization-box p {
  margin: 0 0 16px 0;
  color: var(--text-secondary);
}

.personalization-box textarea {
  width: 100%;
  padding: 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
}

.personalization-box textarea:focus {
  border-color: var(--warning);
}

.personalization-actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.personalization-actions button {
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.personalization-actions .primary {
  background: var(--warning);
  border: none;
  color: #000;
}

.personalization-actions .primary:hover:not(:disabled) {
  background: #d97706;
}

.personalization-actions .primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.personalization-actions .secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.personalization-actions .secondary:hover {
  border-color: var(--border-light);
  color: var(--text-primary);
}

/* Navigation */
.stage-navigation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.nav-button, .jump-button, .download-button {
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.nav-button {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.nav-button:hover:not(:disabled) {
  border-color: var(--border-light);
  color: var(--text-primary);
}

.nav-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.jump-button {
  background: var(--accent);
  border: none;
  color: white;
}

.jump-button:hover {
  background: var(--accent-hover);
}

.download-button {
  background: var(--success);
  border: none;
  color: white;
}

.download-button:hover {
  background: #16a34a;
}

/* Error Display */
.error-container {
  margin-top: 16px;
  padding: 16px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.error-message {
  margin: 0;
  color: var(--error);
}

.retry-button {
  padding: 8px 16px;
  background: var(--error);
  border: none;
  border-radius: var(--radius);
  color: white;
  font-size: 14px;
  cursor: pointer;
  transition: background var(--transition);
}

.retry-button:hover {
  background: #dc2626;
}

.error {
  color: var(--error);
  font-size: 14px;
  margin-top: 8px;
}

/* Responsive */
@media (max-width: 640px) {
  .stage-tabs {
    flex-wrap: wrap;
  }

  .stage-tab {
    padding: 6px 12px;
    min-width: 40px;
  }

  .stage-navigation {
    flex-wrap: wrap;
    gap: 10px;
  }

  .jump-button, .download-button {
    order: -1;
    width: 100%;
    text-align: center;
  }

  .personalization-actions {
    flex-direction: column;
  }
}