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

:root {
  --bg:         #0c0e14;
  --bg2:        #10131b;
  --bg3:        #161a26;
  --border:     rgba(255,255,255,0.07);
  --border2:    rgba(255,255,255,0.12);
  --accent:     #4f8ef7;
  --accent2:    #2563eb;
  --accent-dim: rgba(79,142,247,0.12);
  --text:       #dde2ef;
  --text2:      #8892aa;
  --text3:      #4f5875;
  --green:      #22c55e;
  --red:        #f87171;
  --amber:      #fbbf24;
  --font-head:  'Syne', sans-serif;
  --font-body:  'DM Sans', sans-serif;
  --font-mono:  'DM Mono', monospace;
  --radius:     10px;
  --sidebar-w:  220px;
  --header-h:   52px;
}

html { font-size: 14px; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  height: 100dvh;
  overflow: hidden;
  line-height: 1.6;
}

/* ── App Layout ───────────────────────────────────────────── */
.app {
  display: flex;
  height: 100dvh;
  overflow: hidden;
}

/* ── Sidebar ──────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform 0.25s ease;
  z-index: 50;
}

.sidebar-top { flex: 1; padding: 0 0 16px; overflow-y: auto; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}

.brand-mark {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  color: #fff;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  letter-spacing: -0.3px;
}

.sidebar-nav { padding: 4px 8px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border-radius: 7px;
  border: none;
  background: transparent;
  color: var(--text2);
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
  text-align: left;
  transition: all 0.13s;
  margin-bottom: 2px;
}

.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: var(--accent-dim); color: var(--accent); }
.nav-icon { width: 16px; height: 16px; flex-shrink: 0; }

.sidebar-bottom {
  padding: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.connection-status {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 10px;
  background: var(--bg3);
  border-radius: 7px;
  font-size: 11px;
  color: var(--text2);
  font-family: var(--font-mono);
}

.conn-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text3);
  flex-shrink: 0;
  transition: background 0.3s;
}

.conn-dot.live {
  background: var(--green);
  box-shadow: 0 0 6px rgba(34,197,94,0.5);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.settings-trigger, .new-chat-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 7px 10px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  font-family: var(--font-body);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.13s;
}

.settings-trigger:hover, .new-chat-btn:hover {
  background: var(--bg3);
  color: var(--text);
  border-color: var(--border2);
}

.new-chat-btn {
  background: var(--accent-dim);
  border-color: rgba(79,142,247,0.2);
  color: var(--accent);
  font-weight: 500;
}

.new-chat-btn:hover {
  background: rgba(79,142,247,0.2);
  color: var(--accent);
}

/* ── Main Panel ───────────────────────────────────────────── */
.main-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.main-header {
  height: var(--header-h);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  flex-shrink: 0;
  background: var(--bg2);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 6px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 6px;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text2);
  border-radius: 2px;
}

.menu-toggle:hover span { background: var(--text); }

.header-title {
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
}

.header-settings {
  padding: 6px;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text2);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.13s;
}

.header-settings:hover { color: var(--text); background: var(--bg3); }

/* ── Chat Scroll ──────────────────────────────────────────── */
.chat-scroll {
  flex: 1;
  overflow-y: auto;
  scroll-behavior: smooth;
  position: relative;
}

.chat-scroll::-webkit-scrollbar { width: 4px; }
.chat-scroll::-webkit-scrollbar-track { background: transparent; }
.chat-scroll::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

/* ── Welcome Screen ───────────────────────────────────────── */
.welcome-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  padding: 40px 20px;
}

.welcome-inner {
  max-width: 680px;
  width: 100%;
  text-align: center;
}

.welcome-glyph {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  animation: spin-slow 20s linear infinite;
}

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

.welcome-title {
  font-family: var(--font-head);
  font-size: 36px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -1px;
  margin-bottom: 10px;
}

.welcome-sub {
  color: var(--text2);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 32px;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  text-align: left;
}

.quick-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  text-align: left;
  transition: all 0.15s;
}

.quick-card:hover {
  background: var(--bg3);
  border-color: var(--border2);
  transform: translateY(-1px);
}

.quick-label {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
}

.quick-desc {
  font-size: 12px;
  color: var(--text2);
  line-height: 1.4;
}

/* ── Messages ─────────────────────────────────────────────── */
.messages { padding: 20px 24px; display: flex; flex-direction: column; gap: 20px; }

.message {
  display: flex;
  gap: 14px;
  animation: msg-in 0.2s ease;
}

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

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

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-head);
}

.avatar.user-av  { background: var(--accent2); color: #fff; }
.avatar.bot-av   { background: var(--bg3); border: 1px solid var(--border2); color: var(--accent); }

.bubble {
  max-width: min(72%, 640px);
  padding: 13px 16px;
  border-radius: 12px;
  font-size: 13.5px;
  line-height: 1.75;
}

.bubble.user {
  background: var(--accent2);
  color: #e8f0ff;
  border-radius: 12px 3px 12px 12px;
}

.bubble.bot {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 3px 12px 12px 12px;
  color: var(--text);
}

/* Rich content inside bot bubble */
.bubble.bot h2,
.bubble.bot h3 {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin: 14px 0 6px;
  padding-left: 10px;
  border-left: 2px solid var(--accent);
}
.bubble.bot h2:first-child,
.bubble.bot h3:first-child { margin-top: 0; }

.bubble.bot p { margin-bottom: 8px; }
.bubble.bot p:last-child { margin-bottom: 0; }

.bubble.bot ul, .bubble.bot ol {
  padding-left: 16px;
  margin: 6px 0;
}
.bubble.bot li { margin-bottom: 4px; }

.bubble.bot strong { color: var(--text); font-weight: 500; }

.bubble.bot code {
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

.bubble.bot pre {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  margin: 10px 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--text2);
}

.bubble.bot table {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0;
  font-size: 12.5px;
}
.bubble.bot th {
  text-align: left;
  padding: 7px 12px;
  background: var(--bg3);
  color: var(--text2);
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border2);
  font-weight: 400;
}
.bubble.bot td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}
.bubble.bot tr:last-child td { border-bottom: none; }
.bubble.bot tr:hover td { background: rgba(255,255,255,0.02); }

.tool-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px 3px 7px;
  background: rgba(79,142,247,0.08);
  border: 1px solid rgba(79,142,247,0.2);
  border-radius: 20px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent);
  margin-bottom: 10px;
}

.tool-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 1.5s infinite;
}

/* ── Typing Indicator ─────────────────────────────────────── */
.typing-indicator {
  display: flex;
  gap: 5px;
  align-items: center;
  padding: 14px 16px;
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: typing-bounce 1.2s infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30%            { transform: translateY(-6px); opacity: 1; }
}

/* ── Input Area ───────────────────────────────────────────── */
.input-area {
  padding: 12px 20px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg2);
  flex-shrink: 0;
}

.input-wrap {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 8px 10px 8px 14px;
  transition: border-color 0.15s;
}

.input-wrap:focus-within { border-color: var(--accent); }

.user-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1.6;
  resize: none;
  min-height: 24px;
  max-height: 160px;
  overflow-y: auto;
}

.user-input::placeholder { color: var(--text3); }

.send-button {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--accent);
  border: none;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s;
}

.send-button:hover { background: var(--accent2); transform: scale(1.05); }
.send-button:active { transform: scale(0.97); }
.send-button:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.input-note {
  text-align: center;
  font-size: 11px;
  color: var(--text3);
  margin-top: 8px;
  font-family: var(--font-mono);
}

/* ── Settings Modal ───────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 14px;
  width: 100%;
  max-width: 520px;
  max-height: 90dvh;
  overflow-y: auto;
  transform: translateY(12px);
  transition: transform 0.2s;
}

.modal-overlay.open .modal { transform: translateY(0); }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.modal-close {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  border: none;
  background: var(--bg3);
  color: var(--text2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.13s;
}

.modal-close:hover { background: var(--border2); color: var(--text); }

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

.field-group { display: flex; flex-direction: column; gap: 6px; }

.field-label {
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text2);
  font-weight: 500;
}

.field-input {
  padding: 10px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  transition: border-color 0.15s;
}

.field-input:focus { outline: none; border-color: var(--accent); }
.field-input::placeholder { color: var(--text3); }

.field-static {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.field-static code {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  word-break: break-all;
}

.copy-btn {
  padding: 4px 10px;
  background: var(--accent-dim);
  border: 1px solid rgba(79,142,247,0.25);
  border-radius: 5px;
  color: var(--accent);
  font-size: 11px;
  font-family: var(--font-body);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.13s;
  flex-shrink: 0;
}

.copy-btn:hover { background: rgba(79,142,247,0.2); }

.field-hint {
  font-size: 12px;
  color: var(--text3);
  line-height: 1.5;
}

.field-hint a { color: var(--accent); text-decoration: none; }
.field-hint a:hover { text-decoration: underline; }

.setup-steps {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.step-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 13px;
  color: var(--text2);
  line-height: 1.5;
}

.step-n {
  min-width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid rgba(79,142,247,0.25);
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
  font-family: var(--font-mono);
}

.save-btn {
  padding: 11px 20px;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: #fff;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  width: 100%;
  transition: all 0.15s;
}

.save-btn:hover { background: var(--accent2); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --sidebar-w: 240px; }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    transform: translateX(-100%);
  }

  .sidebar.open { transform: translateX(0); box-shadow: 4px 0 24px rgba(0,0,0,0.5); }

  .menu-toggle { display: flex; }
  .header-settings { display: flex; }

  .quick-grid { grid-template-columns: 1fr 1fr; }

  .bubble { max-width: 90%; }

  .messages { padding: 16px; }
}

@media (max-width: 480px) {
  .quick-grid { grid-template-columns: 1fr; }
  .welcome-title { font-size: 26px; }
  .bubble { max-width: 95%; font-size: 13px; }
}

/* ── Scrollbar (Firefox) ──────────────────────────────────── */
* { scrollbar-width: thin; scrollbar-color: var(--border2) transparent; }