/* ═══════════════════════════════════════════════════
   QWEN AI CHATBOT — PREMIUM CLAUDE-LIKE UI
   Font: Lora (body) + JetBrains Mono (code) + Outfit (UI)
   Theme: Deep slate dark, warm amber accents
   ═══════════════════════════════════════════════════ */

/* ── CSS Variables ──────────────────────────────────── */
:root {
  --bg-base:        #0f1117;
  --bg-surface:     #161b25;
  --bg-elevated:    #1e2533;
  --bg-hover:       #252d3d;
  --bg-input:       #1a2030;
  --border:         #2a3347;
  --border-subtle:  #1f2940;

  --text-primary:   #e8edf5;
  --text-secondary: #8b9ab8;
  --text-muted:     #4e5d78;
  --text-inverse:   #0f1117;

  --accent:         #f0b429;
  --accent-glow:    rgba(240, 180, 41, 0.15);
  --accent-dim:     rgba(240, 180, 41, 0.08);

  --think-bg:       #1a1f10;
  --think-border:   #3d4a1f;
  --think-text:     #b8c88a;
  --think-accent:   #a8c428;

  --user-bg:        #1e2d4a;
  --user-border:    #2a4070;
  --assistant-bg:   #161b25;

  --error-bg:       #2a1a1a;
  --error-text:     #f87171;

  --radius-sm:      6px;
  --radius-md:      12px;
  --radius-lg:      16px;
  --radius-xl:      24px;

  --sidebar-w:      260px;
  --anim-fast:      0.15s;
  --anim-mid:       0.25s;
  --anim-slow:      0.4s;

  --font-ui:        'Outfit', system-ui, sans-serif;
  --font-prose:     'Lora', Georgia, serif;
  --font-code:      'JetBrains Mono', 'Fira Code', monospace;
}

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

html { font-size: 16px; height: 100%; }

body {
  font-family: var(--font-ui);
  background: var(--bg-base);
  color: var(--text-primary);
  height: 100vh;
  display: flex;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── SIDEBAR ─────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform var(--anim-mid) ease, opacity var(--anim-mid) ease;
  z-index: 50;
}

.sidebar.collapsed {
  transform: translateX(calc(-1 * var(--sidebar-w)));
  position: absolute;
  height: 100%;
  opacity: 0;
  pointer-events: none;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-mark {
  width: 28px;
  height: 28px;
  color: var(--accent);
}

.logo-text {
  font-family: var(--font-ui);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.logo-accent { color: var(--accent); }

.new-chat-btn {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--anim-fast);
}

.new-chat-btn svg { width: 14px; height: 14px; }
.new-chat-btn:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--accent); }

.sidebar-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.sidebar-search svg { width: 14px; height: 14px; color: var(--text-muted); flex-shrink: 0; }
.sidebar-search input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--text-primary);
}
.sidebar-search input::placeholder { color: var(--text-muted); }

.chat-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 8px;
}

.chat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--anim-fast);
  group: true;
}

.chat-item:hover { background: var(--bg-hover); }
.chat-item.active { background: var(--accent-dim); }

.chat-item-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
  transition: background var(--anim-fast);
}

.chat-item.active .chat-item-dot { background: var(--accent); }

.chat-item-title {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.chat-item.active .chat-item-title { color: var(--text-primary); }

.chat-item-delete {
  opacity: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 2px;
  display: flex;
  transition: opacity var(--anim-fast), color var(--anim-fast);
}

.chat-item:hover .chat-item-delete { opacity: 1; }
.chat-item-delete:hover { color: var(--error-text); }
.chat-item-delete svg { width: 13px; height: 13px; }

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

.settings-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border: none;
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 13px;
  width: 100%;
  transition: background var(--anim-fast), color var(--anim-fast);
}

.settings-trigger svg { width: 15px; height: 15px; }
.settings-trigger:hover { background: var(--bg-hover); color: var(--text-primary); }

.model-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-code);
}

.model-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--think-accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

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

/* ── TOP BAR ─────────────────────────────────────────── */
.top-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  flex-shrink: 0;
}

.sidebar-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: color var(--anim-fast), background var(--anim-fast);
}

.sidebar-toggle svg { width: 18px; height: 18px; }
.sidebar-toggle:hover { color: var(--text-primary); background: var(--bg-hover); }

.chat-title-wrap { flex: 1; }
.chat-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.top-bar-actions { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 6px 10px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 12px;
  transition: all var(--anim-fast);
}

.icon-btn svg { width: 14px; height: 14px; }
.icon-btn:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--text-muted); }
.icon-btn.active { color: var(--accent); border-color: var(--accent); background: var(--accent-dim); }

/* ── MESSAGES CONTAINER ──────────────────────────────── */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 0;
  scroll-behavior: smooth;
}

/* ── WELCOME SCREEN ──────────────────────────────────── */
.welcome-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  padding: 40px 20px;
  animation: fadeUp var(--anim-slow) ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.welcome-logo {
  width: 72px;
  height: 72px;
  color: var(--accent);
  margin-bottom: 24px;
  animation: floatLogo 4s ease-in-out infinite;
}

@keyframes floatLogo {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.welcome-title {
  font-family: var(--font-prose);
  font-size: 32px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.03em;
}

.welcome-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.6;
  margin-bottom: 32px;
}

.suggestion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  max-width: 600px;
}

.chip {
  padding: 9px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 13px;
  transition: all var(--anim-fast);
}

.chip:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
  color: var(--text-primary);
  transform: translateY(-1px);
}

/* ── MESSAGE BUBBLES ─────────────────────────────────── */
.messages-list {
  padding: 20px 0;
  max-width: 780px;
  margin: 0 auto;
  width: 100%;
  padding-left: 24px;
  padding-right: 24px;
}

.message-row {
  display: flex;
  gap: 14px;
  margin-bottom: 28px;
  animation: slideIn var(--anim-mid) ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.message-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  flex-shrink: 0;
  margin-top: 2px;
}

.message-row.user .message-avatar {
  background: linear-gradient(135deg, #2a4070, #3a5faa);
  color: #a8c4f0;
  font-size: 11px;
}

.message-row.assistant .message-avatar {
  background: linear-gradient(135deg, #2a3020, #3d4a1f);
  color: var(--think-accent);
}

.message-body { flex: 1; min-width: 0; }

.message-row.user .message-body {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

/* ── THINKING BLOCK ──────────────────────────────────── */
.thinking-block {
  background: var(--think-bg);
  border: 1px solid var(--think-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.thinking-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  cursor: pointer;
  user-select: none;
  transition: background var(--anim-fast);
}

.thinking-header:hover { background: rgba(168, 196, 40, 0.05); }

.thinking-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--think-accent);
  animation: pulse 1.5s ease infinite;
  flex-shrink: 0;
}

.thinking-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--think-accent);
  flex: 1;
  font-family: var(--font-ui);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.thinking-chevron {
  color: var(--think-text);
  transition: transform var(--anim-fast);
}

.thinking-chevron svg { width: 14px; height: 14px; }
.thinking-block.collapsed .thinking-chevron { transform: rotate(-90deg); }

.thinking-content {
  padding: 0 14px 12px;
  font-family: var(--font-code);
  font-size: 12.5px;
  color: var(--think-text);
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  border-top: 1px solid var(--think-border);
  max-height: 320px;
  overflow-y: auto;
  padding-top: 10px;
}

.thinking-block.collapsed .thinking-content { display: none; }

/* ── MESSAGE CONTENT ─────────────────────────────────── */
.user-bubble {
  background: var(--user-bg);
  border: 1px solid var(--user-border);
  border-radius: var(--radius-lg) var(--radius-lg) 4px var(--radius-lg);
  padding: 12px 16px;
  max-width: 600px;
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.65;
  word-break: break-word;
}

.assistant-text {
  font-family: var(--font-prose);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-primary);
  max-width: 100%;
  word-break: break-word;
}

.assistant-text p { margin-bottom: 12px; }
.assistant-text p:last-child { margin-bottom: 0; }

.assistant-text h1, .assistant-text h2, .assistant-text h3 {
  font-family: var(--font-ui);
  font-weight: 600;
  margin: 20px 0 10px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.assistant-text h1 { font-size: 20px; }
.assistant-text h2 { font-size: 17px; }
.assistant-text h3 { font-size: 15px; }

.assistant-text ul, .assistant-text ol {
  margin: 10px 0;
  padding-left: 22px;
}

.assistant-text li { margin-bottom: 4px; }

.assistant-text code {
  font-family: var(--font-code);
  font-size: 13px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--think-accent);
}

.assistant-text pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 14px 0;
  overflow-x: auto;
  position: relative;
}

.assistant-text pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 13px;
  color: var(--text-primary);
}

.assistant-text blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  color: var(--text-secondary);
  margin: 14px 0;
  font-style: italic;
}

.assistant-text strong { font-weight: 600; color: var(--text-primary); }
.assistant-text em { font-style: italic; }
.assistant-text a { color: var(--accent); text-decoration: underline; }
.assistant-text hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

/* ── STREAMING CURSOR ────────────────────────────────── */
.cursor-blink {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent);
  vertical-align: text-bottom;
  border-radius: 1px;
  animation: blink 1s step-end infinite;
}

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

/* ── MEDIA ATTACHMENTS ───────────────────────────────── */
.message-media { margin-bottom: 10px; }

.message-media img {
  max-width: 100%;
  max-height: 280px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  object-fit: contain;
}

.message-media video {
  max-width: 100%;
  max-height: 280px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

/* ── MESSAGE ACTIONS ─────────────────────────────────── */
.message-actions {
  display: flex;
  gap: 4px;
  margin-top: 8px;
  opacity: 0;
  transition: opacity var(--anim-fast);
}

.message-row:hover .message-actions { opacity: 1; }

.msg-action-btn {
  padding: 4px 8px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 11px;
  font-family: var(--font-ui);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all var(--anim-fast);
}

.msg-action-btn svg { width: 11px; height: 11px; }
.msg-action-btn:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--text-muted); }

/* ── INPUT AREA ──────────────────────────────────────── */
.input-area-wrapper {
  padding: 16px 20px 20px;
  background: var(--bg-base);
  border-top: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.attachments-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.attachment-thumb {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}

.attachment-thumb img,
.attachment-thumb video {
  width: 72px;
  height: 72px;
  object-fit: cover;
  display: block;
}

.attachment-thumb .remove-attach {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(0,0,0,0.7);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.input-area {
  max-width: 780px;
  margin: 0 auto;
}

.input-box {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 10px 12px;
  transition: border-color var(--anim-fast), box-shadow var(--anim-fast);
}

.input-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.attach-menu-wrap { position: relative; }

.attach-btn {
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--anim-fast);
  flex-shrink: 0;
}

.attach-btn svg { width: 18px; height: 18px; }
.attach-btn:hover { color: var(--accent); background: var(--accent-dim); }

.attach-menu {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  min-width: 160px;
  z-index: 100;
  display: none;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.attach-menu.open { display: block; animation: menuOpen var(--anim-fast) ease; }

@keyframes menuOpen {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.attach-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 13px;
  width: 100%;
  transition: all var(--anim-fast);
}

.attach-option svg { width: 15px; height: 15px; }
.attach-option:hover { background: var(--bg-hover); color: var(--text-primary); }

.message-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--font-ui);
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.5;
  max-height: 200px;
  overflow-y: auto;
  padding: 4px 0;
}

.message-input::placeholder { color: var(--text-muted); }

.input-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.context-chip {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 9px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-code);
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--anim-fast);
  user-select: none;
}

.context-chip svg { width: 12px; height: 12px; }
.context-chip:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

.send-btn {
  width: 36px;
  height: 36px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
  transition: all var(--anim-fast);
  flex-shrink: 0;
}

.send-btn svg { width: 15px; height: 15px; }
.send-btn:hover:not(:disabled) { background: #e0a020; transform: scale(1.05); }
.send-btn:disabled { background: var(--bg-elevated); color: var(--text-muted); cursor: not-allowed; transform: none; }

.disclaimer {
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 10px;
  font-family: var(--font-code);
}

/* ── SETTINGS PANEL ──────────────────────────────────── */
.settings-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--anim-mid);
  backdrop-filter: blur(2px);
}

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

.settings-panel {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  width: 380px;
  background: var(--bg-surface);
  border-left: 1px solid var(--border);
  z-index: 201;
  transform: translateX(100%);
  transition: transform var(--anim-mid) ease;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.settings-panel.open { transform: translateX(0); }

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border-subtle);
  sticky: top;
}

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

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  display: flex;
  transition: all var(--anim-fast);
}

.close-btn svg { width: 16px; height: 16px; }
.close-btn:hover { color: var(--text-primary); background: var(--bg-hover); }

.settings-section {
  padding: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.settings-label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-family: var(--font-ui);
}

.settings-label svg { width: 14px; height: 14px; }
.settings-value {
  margin-left: auto;
  font-family: var(--font-code);
  font-size: 12px;
  color: var(--accent);
}

.system-prompt-textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--text-primary);
  resize: vertical;
  outline: none;
  line-height: 1.6;
  min-height: 100px;
  transition: border-color var(--anim-fast);
}

.system-prompt-textarea:focus { border-color: var(--accent); }

.slider-track { margin-bottom: 8px; }

.slider {
  width: 100%;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--bg-elevated);
  outline: none;
  cursor: pointer;
  accent-color: var(--accent);
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-code);
}

.settings-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 8px;
  line-height: 1.5;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.toggle-desc {
  font-size: 13px;
  color: var(--text-muted);
}

.toggle-switch {
  position: relative;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
}

.toggle-switch input { opacity: 0; width: 0; height: 0; }

.toggle-knob {
  position: absolute;
  inset: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 99px;
  cursor: pointer;
  transition: background var(--anim-fast);
}

.toggle-knob::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: transform var(--anim-fast), background var(--anim-fast);
}

.toggle-switch input:checked + .toggle-knob { background: var(--accent-dim); border-color: var(--accent); }
.toggle-switch input:checked + .toggle-knob::after { transform: translateX(18px); background: var(--accent); }

.apply-btn {
  margin: 20px;
  padding: 12px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-inverse);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--anim-fast);
}

.apply-btn:hover { background: #e0a020; }

/* ── CONTEXT QUICK PANEL ─────────────────────────────── */
.context-quick-panel {
  position: absolute;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px;
  z-index: 150;
  display: none;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  animation: menuOpen var(--anim-fast) ease;
}

.context-quick-panel.open { display: block; }

.cqp-header {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.cqp-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.cqp-preset {
  padding: 5px 12px;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-code);
  font-size: 12px;
  transition: all var(--anim-fast);
}

.cqp-preset:hover, .cqp-preset.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* ── LOADING INDICATOR ───────────────────────────────── */
.loading-dots {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 0;
}

.loading-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: dotBounce 1.2s infinite;
}

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

@keyframes dotBounce {
  0%, 80%, 100% { transform: scale(0.7); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

/* ── ERROR MESSAGE ───────────────────────────────────── */
.error-msg {
  background: var(--error-bg);
  border: 1px solid rgba(248, 113, 113, 0.3);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--error-text);
  font-size: 13px;
}

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    height: 100%;
    transform: translateX(calc(-1 * var(--sidebar-w)));
  }

  .sidebar.mobile-open {
    transform: translateX(0);
    opacity: 1;
    pointer-events: all;
  }

  .settings-panel { width: 100%; }

  .messages-list { padding-left: 16px; padding-right: 16px; }

  .welcome-title { font-size: 24px; }
}

/* ── COPY CODE BUTTON ────────────────────────────────── */
.code-wrapper { position: relative; }

.copy-code-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 8px;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 11px;
  font-family: var(--font-ui);
  transition: all var(--anim-fast);
  opacity: 0;
}

.code-wrapper:hover .copy-code-btn { opacity: 1; }
.copy-code-btn:hover { background: var(--bg-base); color: var(--text-primary); }