*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --dr-primary: #6C63FF; --dr-primary-dark: #5A52D5; --dr-primary-light: #8B85FF;
  --dr-accent: #FF6584; --dr-bg: #0a0a0f; --dr-bg-surface: #13131a;
  --dr-bg-elevated: #1a1a24; --dr-text: #e8e8ed; --dr-text-muted: #8888a0;
  --dr-border: #2a2a3a; --dr-success: #4ade80; --dr-warning: #fbbf24; --dr-error: #f87171;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --space-xs: 4px; --space-sm: 8px; --space-md: 16px; --space-lg: 24px; --space-xl: 32px; --space-2xl: 48px;
  --chat-width: 400px; --chat-height: 600px; --chat-radius: 16px; --chat-toggle-size: 56px;
}
html, body { height: 100%; font-family: var(--font-sans); background: var(--dr-bg); color: var(--dr-text); overflow: hidden; -webkit-font-smoothing: antialiased; }
.canvas { position: fixed; inset: 0; overflow-y: auto; overflow-x: hidden; scroll-behavior: smooth; }
.canvas-content { min-height: 100vh; position: relative; }
.canvas-content:empty::before {
  content: ''; position: fixed; inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(108,99,255,0.03) 0%, transparent 70%),
    linear-gradient(rgba(108,99,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,99,255,0.02) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px, 40px 40px;
  animation: breathe 8s ease-in-out infinite;
}
.canvas-content:empty::after {
  content: 'Your canvas is ready. Tell Propylon what you want to build.';
  position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
  color: var(--dr-text-muted); font-size: 1.1rem; font-weight: 300;
  letter-spacing: 0.02em; text-align: center; pointer-events: none; opacity: 0.6;
}
@keyframes breathe { 0%, 100% { opacity: 0.5; } 50% { opacity: 1; } }
.chat-widget { position: fixed; bottom: var(--space-lg); right: var(--space-lg); z-index: 9999; font-family: var(--font-sans); }
.chat-toggle {
  width: var(--chat-toggle-size); height: var(--chat-toggle-size); border-radius: 50%; border: none;
  background: var(--dr-primary); color: white; cursor: pointer; display: flex; align-items: center;
  justify-content: center; box-shadow: 0 4px 24px rgba(108,99,255,0.4);
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1); position: relative; z-index: 2;
}
.chat-toggle:hover { transform: scale(1.08); box-shadow: 0 6px 32px rgba(108,99,255,0.5); }
.chat-toggle svg { width: 24px; height: 24px; transition: opacity 0.2s, transform 0.3s; }
.chat-toggle .close-icon { position: absolute; opacity: 0; transform: rotate(-90deg); }
.chat-widget.open .chat-toggle .chat-icon { opacity: 0; transform: rotate(90deg); }
.chat-widget.open .chat-toggle .close-icon { opacity: 1; transform: rotate(0); }
.chat-panel {
  position: absolute; bottom: calc(var(--chat-toggle-size) + var(--space-md)); right: 0;
  width: var(--chat-width); height: var(--chat-height); max-height: calc(100vh - 120px);
  background: var(--dr-bg-surface); border: 1px solid var(--dr-border);
  border-radius: var(--chat-radius); display: flex; flex-direction: column; overflow: hidden;
  box-shadow: 0 8px 48px rgba(0,0,0,0.4); opacity: 0; transform: translateY(20px) scale(0.95);
  pointer-events: none; transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}
.chat-widget.open .chat-panel { opacity: 1; transform: translateY(0) scale(1); pointer-events: all; }
.chat-header {
  padding: var(--space-md) var(--space-lg); background: var(--dr-bg-elevated);
  border-bottom: 1px solid var(--dr-border); display: flex; align-items: center;
  justify-content: space-between; flex-shrink: 0;
}
.chat-header-info { display: flex; align-items: center; gap: var(--space-sm); }
.chat-avatar {
  width: 36px; height: 36px; border-radius: 50%; background: var(--dr-primary); color: white;
  display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 0.9rem;
}
.chat-name { font-weight: 600; font-size: 0.95rem; }
.chat-status { font-size: 0.75rem; color: var(--dr-text-muted); }
.chat-messages {
  flex: 1; overflow-y: auto; padding: var(--space-lg); display: flex;
  flex-direction: column; gap: var(--space-md); scroll-behavior: smooth;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--dr-border); border-radius: 2px; }
.message { max-width: 85%; animation: messageIn 0.3s ease-out; }
.message.assistant { align-self: flex-start; }
.message.user { align-self: flex-end; }
.message-content { padding: var(--space-sm) var(--space-md); border-radius: 12px; font-size: 0.9rem; line-height: 1.5; }
.message.assistant .message-content {
  background: var(--dr-bg-elevated); border: 1px solid var(--dr-border); border-bottom-left-radius: 4px;
}
.message.user .message-content { background: var(--dr-primary); color: white; border-bottom-right-radius: 4px; }
.message-content p { margin-bottom: var(--space-sm); }
.message-content p:last-child { margin-bottom: 0; }
.message-content ul { margin: var(--space-sm) 0; padding-left: var(--space-lg); }
.message-content li { margin-bottom: var(--space-xs); color: var(--dr-text-muted); font-size: 0.85rem; }
.typing-indicator { display: flex; gap: 4px; padding: var(--space-sm) var(--space-md); }
.typing-indicator span {
  width: 8px; height: 8px; border-radius: 50%; background: var(--dr-text-muted); animation: typing 1.4s infinite;
}
.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% { opacity: 0.3; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-4px); } }
@keyframes messageIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.chat-input-area {
  padding: var(--space-md); border-top: 1px solid var(--dr-border); display: flex;
  gap: var(--space-sm); align-items: flex-end; background: var(--dr-bg-elevated); flex-shrink: 0;
}
.chat-input {
  flex: 1; background: var(--dr-bg-surface); border: 1px solid var(--dr-border);
  border-radius: 12px; padding: var(--space-sm) var(--space-md); color: var(--dr-text);
  font-family: var(--font-sans); font-size: 0.9rem; resize: none; max-height: 120px;
  line-height: 1.5; transition: border-color 0.2s;
}
.chat-input:focus { outline: none; border-color: var(--dr-primary); }
.chat-input::placeholder { color: var(--dr-text-muted); }
.chat-send {
  width: 40px; height: 40px; border-radius: 50%; border: none; background: var(--dr-primary);
  color: white; cursor: pointer; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: all 0.2s;
}
.chat-send:hover { background: var(--dr-primary-dark); }
.chat-send:disabled { opacity: 0.5; cursor: not-allowed; }
.chat-send svg { width: 18px; height: 18px; }
.canvas-toolbar {
  position: fixed; top: var(--space-lg); left: 50%; transform: translateX(-50%);
  background: var(--dr-bg-elevated); border: 1px solid var(--dr-border); border-radius: 12px;
  padding: var(--space-xs) var(--space-sm); display: flex; align-items: center;
  gap: var(--space-xs); box-shadow: 0 4px 24px rgba(0,0,0,0.3); z-index: 1000; transition: all 0.3s ease;
}
.canvas-toolbar.hidden { opacity: 0; transform: translateX(-50%) translateY(-20px); pointer-events: none; }
.toolbar-btn {
  width: 36px; height: 36px; border: none; background: transparent; color: var(--dr-text-muted);
  border-radius: 8px; cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 1rem; transition: all 0.2s;
}
.toolbar-btn:hover { background: var(--dr-bg-surface); color: var(--dr-text); }
.toolbar-divider { width: 1px; height: 24px; background: var(--dr-border); margin: 0 var(--space-xs); }
@media (max-width: 480px) {
  .chat-panel { width: calc(100vw - 32px); height: calc(100vh - 120px); }
  :root { --chat-width: calc(100vw - 32px); }
}
.canvas-generating { position: relative; }
.canvas-generating::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--dr-primary), transparent);
  animation: generatePulse 2s ease-in-out infinite;
}
@keyframes generatePulse { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
.canvas-section { animation: sectionAppear 0.5s ease-out; position: relative; }
.canvas-section:hover { outline: 2px solid rgba(108,99,255,0.2); outline-offset: 4px; }
@keyframes sectionAppear { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }