/* ACQ Advisor — Dark theme, engineering-forward */
:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --text2: #8b949e;
  --blue: #58a6ff;
  --green: #3fb950;
  --orange: #d29922;
  --red: #f85149;
  --purple: #bc8cff;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr 320px;
  grid-template-rows: auto 1fr auto;
  gap: 20px;
  min-height: 100vh;
}

/* Hero */
.hero {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px 40px;
}

.hero-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 20px;
  padding: 4px 16px;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  color: var(--text2);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto 20px;
}

.hero-stack {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.chip {
  font-size: 12px;
  font-weight: 500;
  color: var(--text2);
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 4px 12px;
}

.hero-cta {
  color: var(--text2);
  font-size: 14px;
  font-style: italic;
}

/* Chat */
.chat-container {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  min-height: 500px;
  max-height: 70vh;
  overflow: hidden;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.msg {
  display: flex;
  gap: 12px;
  max-width: 85%;
}

.msg.bot { align-self: flex-start; }
.msg.user { align-self: flex-end; }

.msg-content {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.6;
}

.msg.user .msg-content {
  background: #1a3a5c;
  border-color: #264d73;
}

.msg-content p { margin-bottom: 8px; }
.msg-content p:last-child { margin-bottom: 0; }

.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.suggestion {
  font-family: var(--font);
  font-size: 13px;
  color: var(--blue);
  background: rgba(88, 166, 255, 0.1);
  border: 1px solid rgba(88, 166, 255, 0.3);
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  transition: all 0.15s;
}

.suggestion:hover {
  background: rgba(88, 166, 255, 0.2);
  border-color: var(--blue);
}

.chat-input {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg3);
}

.chat-input input {
  flex: 1;
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.15s;
}

.chat-input input:focus { border-color: var(--blue); }

.chat-input button {
  font-family: var(--font);
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  background: var(--blue);
  border: none;
  border-radius: 8px;
  width: 42px;
  cursor: pointer;
  transition: opacity 0.15s;
}

.chat-input button:hover { opacity: 0.85; }
.chat-input button:disabled { opacity: 0.4; cursor: not-allowed; }

.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 8px 0;
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  background: var(--text2);
  border-radius: 50%;
  animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

/* Metrics Panel */
.metrics-panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  align-self: start;
  position: sticky;
  top: 20px;
}

.metrics-panel h3 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text2);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.metric-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.metric {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.metric-label {
  font-size: 12px;
  color: var(--text2);
  white-space: nowrap;
}

.metric-value {
  font-size: 13px;
  font-weight: 500;
  color: var(--green);
  font-variant-numeric: tabular-nums;
  text-align: right;
  word-break: break-all;
}

/* Footer */
.footer {
  grid-column: 1 / -1;
  text-align: center;
  padding: 30px 20px;
  border-top: 1px solid var(--border);
  color: var(--text2);
  font-size: 13px;
}

.footer-build {
  margin-bottom: 8px;
}

.footer-build a {
  color: var(--blue);
  text-decoration: none;
}

.footer-build a:hover { text-decoration: underline; }

.footer-sub {
  font-size: 11px;
  color: var(--text2);
  opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
  .layout {
    grid-template-columns: 1fr;
    padding: 12px;
  }

  .hero h1 { font-size: 32px; }
  .hero { padding: 40px 12px 24px; }

  .chat-container {
    max-height: 60vh;
  }

  .metrics-panel {
    position: static;
  }

  .msg { max-width: 95%; }
}

/* Scrollbar */
.chat-messages::-webkit-scrollbar { width: 6px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }