/* ═══════════════════════════════════════════════════════════
   LocalChat — style.css   (100% offline AI assistant)
   ═══════════════════════════════════════════════════════════ */

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

:root {
  /* Dark theme */
  --bg:           #0f1117;
  --surface:      #1a1d27;
  --surface-alt:  #20232f;
  --surface-mid:  #252836;
  --border:       #2e3144;
  --border-soft:  #262940;

  /* Accent: purple (local AI feel) */
  --accent:       #7c3aed;
  --accent-h:     #6d28d9;
  --accent-soft:  rgba(124,58,237,.15);
  --accent-glow:  rgba(124,58,237,.35);

  /* Text */
  --text:         #e2e4f0;
  --text-muted:   #8b8fa8;
  --text-faint:   #555870;

  /* Status */
  --green:  #10b981;
  --red:    #ef4444;
  --yellow: #f59e0b;

  /* Bubbles */
  --user-bg: #7c3aed;
  --user-fg: #ffffff;
  --ai-bg:   #1e2130;
  --ai-fg:   #d8daea;

  /* Layout */
  --sidebar-w: 300px;
  --header-h:  54px;
  --radius:    12px;
  --radius-sm: 8px;
  --radius-pill: 999px;

  --font:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono:  "Cascadia Code", "JetBrains Mono", Consolas, monospace;

  --t: 160ms ease;
}

html, body {
  height: 100%;
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

button { cursor: pointer; border: none; background: none; font-family: inherit; }
textarea { font-family: inherit; }

/* ── Navbar ───────────────────────────────────────────────────── */
.navbar {
  position: fixed; inset: 0 0 auto;
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 16px;
  gap: 0;
  z-index: 100;
}

.navbar-brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 15px;
  color: #a78bfa;
  text-decoration: none;
  margin-right: 20px;
  flex-shrink: 0;
}
.navbar-icon  { font-size: 20px; }
.navbar-title { letter-spacing: -.3px; }

.navbar-links {
  display: flex; align-items: center; gap: 2px;
  flex: 1;
}

.nav-link {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  border-radius: 7px;
  font-size: .82rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: background .15s, color .15s;
  white-space: nowrap;
}
.nav-link:hover { background: var(--surface2); color: var(--text); }
.nav-link.active {
  background: rgba(124,58,237,.15);
  color: var(--accent);
}
.nav-link svg { flex-shrink: 0; }

.navbar-right { display: flex; align-items: center; gap: 10px; margin-left: auto; }

/* (legacy .header-right kept for compatibility) */
.header-right { display: flex; align-items: center; gap: 10px; }

/* Settings gear link — kept for any legacy references */
.settings-link {
  display: flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 6px;
  color: var(--text-faint);
  text-decoration: none;
  transition: background .15s, color .15s;
}
.settings-link:hover { background: var(--surface2); color: var(--accent); }

/* Active provider badge */
.provider-badge {
  font-size: .72rem;
  font-weight: 600;
  padding: .2rem .55rem;
  border-radius: 20px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--accent);
  white-space: nowrap;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* No-provider banner in chat */
.no-provider-bar {
  background: #3b1515;
  border-bottom: 1px solid #7f1d1d;
  padding: .5rem 1.2rem;
  font-size: .82rem;
  color: #fca5a5;
  text-align: center;
}
.no-provider-bar a { color: #f87171; text-decoration: underline; }

/* Provider tag under AI bubble */
.msg-provider-tag {
  display: none;
  font-size: .68rem;
  color: var(--text-faint);
  margin-top: .25rem;
  padding-left: .1rem;
}

/* Ollama badge */
.ollama-badge {
  display: flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--surface-alt);
  font-size: 12px;
  color: var(--text-muted);
  transition: all var(--t);
}
.ollama-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--text-faint);
  transition: background var(--t);
}
.ollama-badge.ready  { border-color: rgba(16,185,129,.4); background: rgba(16,185,129,.08); color: var(--green); }
.ollama-badge.ready .ollama-dot  { background: var(--green); box-shadow: 0 0 6px var(--green); }
.ollama-badge.error  { border-color: rgba(239,68,68,.4);  background: rgba(239,68,68,.08);  color: var(--red); }
.ollama-badge.error .ollama-dot  { background: var(--red); }
.ollama-badge.warn   { border-color: rgba(245,158,11,.4); background: rgba(245,158,11,.08); color: var(--yellow); }
.ollama-badge.warn .ollama-dot   { background: var(--yellow); }

/* ── Layout ───────────────────────────────────────────────────── */
.layout {
  display: flex;
  height: 100vh;
  padding-top: var(--header-h);
  overflow: hidden;
}

/* ── Sidebar ──────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow-y: auto; overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.panel {
  padding: 16px 14px;
  border-bottom: 1px solid var(--border-soft);
}
.panel-title {
  display: flex; align-items: center; gap: 6px;
  font-size: 10px; font-weight: 700; letter-spacing: .7px;
  text-transform: uppercase; color: var(--text-faint);
  margin-bottom: 12px;
}

/* Drop zone */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface-alt);
  cursor: pointer;
  transition: border-color var(--t), background var(--t);
  margin-bottom: 10px; outline: none;
}
.drop-zone:hover, .drop-zone:focus, .drop-zone.over {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.drop-zone-body {
  display: flex; flex-direction: column; align-items: center;
  padding: 22px 12px; gap: 4px; pointer-events: none;
}
.drop-icons { display: flex; gap: 6px; font-size: 28px; margin-bottom: 4px; }
.drop-label { font-weight: 600; color: var(--text-muted); font-size: 13px; }
.drop-sub   { font-size: 11px; color: var(--text-faint); text-align: center; }

/* File preview */
.file-preview {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  background: var(--accent-soft);
  border: 1px solid rgba(124,58,237,.3);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  animation: slideIn var(--t);
}
.file-type-badge {
  font-size: 10px; font-weight: 700; letter-spacing: .5px;
  padding: 2px 6px; border-radius: 4px;
  background: var(--accent); color: #fff;
  flex-shrink: 0;
}
.file-preview-info { flex: 1; min-width: 0; }
.file-preview-name {
  display: block; font-size: 11px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  color: var(--text);
}
.file-preview-size { font-size: 10px; color: var(--text-muted); }
.file-remove-btn {
  width: 20px; height: 20px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); transition: background var(--t), color var(--t);
}
.file-remove-btn:hover { background: rgba(239,68,68,.2); color: var(--red); }

/* Progress */
.progress-wrap { margin-top: 8px; display: flex; flex-direction: column; gap: 5px; }
.progress-track {
  height: 3px; border-radius: var(--radius-pill);
  background: var(--border); overflow: hidden;
}
.progress-bar {
  height: 100%; border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--accent), #a78bfa);
  width: 0%; transition: width .5s ease;
}
.progress-label { font-size: 11px; color: var(--text-muted); text-align: center; }

/* Active doc panel */
.active-doc-panel { background: rgba(16,185,129,.05); }
.active-doc-card {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  background: var(--surface);
  border: 1px solid rgba(16,185,129,.2);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  font-size: 22px;
}
.active-doc-info { min-width: 0; }
.active-doc-name {
  display: block; font-size: 11px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.active-doc-meta { font-size: 10px; color: var(--text-muted); }

/* Doc list */
.docs-panel { flex: 1; }
.refresh-btn {
  margin-left: auto; width: 20px; height: 20px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-faint); transition: background var(--t), transform var(--t);
}
.refresh-btn:hover { background: var(--surface-alt); color: var(--accent); }
.refresh-btn.spinning { animation: spin .6s linear infinite; }
.doc-list { display: flex; flex-direction: column; gap: 3px; }
.doc-list-empty { font-size: 11px; color: var(--text-faint); text-align: center; padding: 10px 0; }
.doc-item {
  display: flex; align-items: center; gap: 7px;
  padding: 7px 8px; border-radius: var(--radius-sm);
  cursor: pointer; border: 1px solid transparent;
  transition: background var(--t);
}
.doc-item:hover    { background: var(--surface-alt); }
.doc-item.selected { background: var(--accent-soft); border-color: rgba(124,58,237,.3); }
.doc-item-icon { font-size: 14px; }
.doc-item-id {
  flex: 1; font-size: 10px; font-family: var(--mono);
  color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.doc-item.selected .doc-item-id { color: #a78bfa; }

/* Ollama info panel */
.ollama-panel { background: var(--surface-alt); }
.ollama-info { display: flex; flex-direction: column; gap: 6px; }
.ollama-row { display: flex; justify-content: space-between; align-items: center; }
.ollama-label { font-size: 11px; color: var(--text-muted); }
.ollama-val   { font-size: 11px; font-weight: 600; font-family: var(--mono); color: var(--text-faint); }
.ollama-val.ok  { color: var(--green); }
.ollama-val.err { color: var(--red); }
.ollama-error {
  margin-top: 8px; padding: 7px 9px;
  background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.3);
  border-radius: var(--radius-sm);
  font-size: 11px; color: var(--red); line-height: 1.5;
}

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 14px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600;
  transition: background var(--t), transform var(--t), opacity var(--t);
}
.btn:active:not(:disabled) { transform: scale(.97); }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 10px; font-size: 12px; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-h); }

.btn-ghost {
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover:not(:disabled) { background: var(--surface-alt); color: var(--text); }

/* ── Chat area ────────────────────────────────────────────────── */
.chat {
  flex: 1; display: flex; flex-direction: column;
  min-width: 0; overflow: hidden;
}

.chat-empty {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 40px 24px; text-align: center;
  animation: fadeIn .4s ease;
}
.chat-empty-glyph  { font-size: 52px; margin-bottom: 14px; }
.chat-empty-title  { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.chat-empty-desc   { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }

.feature-pills { display: flex; flex-wrap: wrap; gap: 7px; justify-content: center; margin-bottom: 24px; }
.pill {
  padding: 4px 11px; border-radius: var(--radius-pill);
  background: var(--surface); border: 1px solid var(--border);
  font-size: 12px; color: var(--text-muted);
}

/* Quickstart card */
.quickstart {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 18px;
  text-align: left; max-width: 340px; width: 100%;
}
.quickstart-title { font-size: 11px; font-weight: 700; color: var(--text-faint); text-transform: uppercase; letter-spacing: .6px; margin-bottom: 8px; }
.quickstart code {
  display: block; font-family: var(--mono); font-size: 12px;
  color: #a78bfa; background: var(--surface-alt);
  padding: 4px 8px; border-radius: 5px; margin-bottom: 5px;
}

/* Messages */
.chat-messages {
  flex: 1; overflow-y: auto; overflow-x: hidden;
  padding: 20px 24px 8px;
  scroll-behavior: smooth;
  scrollbar-width: thin; scrollbar-color: var(--border) transparent;
  display: flex; flex-direction: column; gap: 14px;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* Bubbles */
.msg { display: flex; gap: 9px; max-width: 820px; animation: bubbleIn .18s ease; }
.msg-user   { align-self: flex-end;   flex-direction: row-reverse; }
.msg-ai     { align-self: flex-start; }
.msg-system { align-self: center; }

.msg-avatar {
  width: 30px; height: 30px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; flex-shrink: 0; margin-top: 2px;
}
.msg-user .msg-avatar { background: var(--accent); font-size: 13px; color: #fff; }
.msg-ai   .msg-avatar { background: var(--surface-mid); border: 1px solid var(--border); }

.msg-bubble {
  padding: 10px 14px; border-radius: 14px;
  line-height: 1.65; font-size: 14px;
  max-width: 72ch; word-break: break-word;
  white-space: pre-wrap;
}
.msg-user   .msg-bubble { background: var(--user-bg); color: var(--user-fg); border-bottom-right-radius: 3px; }
.msg-ai     .msg-bubble { background: var(--ai-bg);   color: var(--ai-fg);   border-bottom-left-radius: 3px; border: 1px solid var(--border-soft); }
.msg-system .msg-bubble { background: transparent; border: 1px dashed var(--border); color: var(--text-muted); font-size: 12px; border-radius: var(--radius-pill); padding: 4px 12px; }
.msg-error  .msg-bubble { background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.3); color: var(--red); }

.msg-time { font-size: 10px; color: var(--text-faint); margin-top: 3px; padding: 0 3px; }
.msg-user .msg-time { text-align: right; }

/* Typing indicator */
.typing-dot { display: inline-flex; gap: 4px; padding: 2px 4px; }
.typing-dot span {
  width: 5px; height: 5px; border-radius: 50%; background: var(--text-faint);
  animation: bounce .8s infinite;
}
.typing-dot span:nth-child(2) { animation-delay: .14s; }
.typing-dot span:nth-child(3) { animation-delay: .28s; }

/* Streaming cursor */
.cursor {
  display: inline-block; width: 2px; height: 14px;
  background: var(--accent); margin-left: 2px; vertical-align: middle;
  animation: blink .7s infinite;
}

/* Chat input bar */
.chat-bar {
  padding: 10px 24px 14px;
  border-top: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}
.chat-bar-inner {
  display: flex; align-items: flex-end; gap: 8px;
  background: var(--surface-alt);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 7px 7px 7px 13px;
  transition: border-color var(--t), box-shadow var(--t);
}
.chat-bar-inner:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.chat-input {
  flex: 1; border: none; background: transparent; resize: none; outline: none;
  font-size: 14px; line-height: 1.5; color: var(--text);
  max-height: 120px; overflow-y: auto; scrollbar-width: thin;
}
.chat-input::placeholder { color: var(--text-faint); }
.chat-input:disabled { cursor: not-allowed; }

.send-btn, .stop-btn {
  width: 34px; height: 34px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background var(--t), transform var(--t), opacity var(--t);
}
.send-btn { background: var(--accent); color: #fff; }
.send-btn:hover:not(:disabled) { background: var(--accent-h); }
.send-btn:active:not(:disabled) { transform: scale(.9); }
.send-btn:disabled { opacity: .35; cursor: not-allowed; }
.stop-btn { background: rgba(239,68,68,.15); color: var(--red); border: 1px solid rgba(239,68,68,.3); }
.stop-btn:hover { background: rgba(239,68,68,.25); }

.chat-hint { font-size: 11px; color: var(--text-faint); margin-top: 5px; padding-left: 2px; }
kbd {
  padding: 1px 4px; border-radius: 4px; border: 1px solid var(--border);
  background: var(--surface-alt); font-family: var(--mono); font-size: 10px;
  color: var(--text-muted);
}

/* ── Toasts ───────────────────────────────────────────────────── */
.toast-container {
  position: fixed; bottom: 20px; right: 20px;
  display: flex; flex-direction: column; gap: 7px; z-index: 999;
}
.toast {
  display: flex; align-items: flex-start; gap: 9px;
  padding: 11px 14px;
  background: var(--surface-mid); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px; max-width: 360px;
  animation: toastIn .22s ease;
  box-shadow: 0 4px 20px rgba(0,0,0,.4);
}
.toast-icon { font-size: 15px; flex-shrink: 0; margin-top: 1px; }
.toast-msg  { flex: 1; line-height: 1.45; color: var(--text); }
.toast.success { border-color: rgba(16,185,129,.4); }
.toast.error   { border-color: rgba(239,68,68,.4); }
.toast.info    { border-color: rgba(124,58,237,.4); }
.toast.warn    { border-color: rgba(245,158,11,.4); }
.toast.removing { animation: toastOut .22s ease forwards; }

/* ── Logout button (navbar) ──────────────────────────────────── */
.nav-logout-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--t), color var(--t), border-color var(--t);
  margin-left: 10px;
}
.nav-logout-btn:hover {
  background: rgba(239,68,68,.12);
  border-color: rgba(239,68,68,.4);
  color: #fca5a5;
}

/* ── Utilities ────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Animations ───────────────────────────────────────────────── */
@keyframes fadeIn  { from { opacity:0; transform:translateY(10px); } to { opacity:1; transform:none; } }
@keyframes slideIn { from { opacity:0; transform:translateY(-5px); } to { opacity:1; transform:none; } }
@keyframes bubbleIn { from { opacity:0; transform:translateY(6px) scale(.97); } to { opacity:1; transform:none; } }
@keyframes bounce  { 0%,80%,100% { transform:translateY(0); } 40% { transform:translateY(-5px); } }
@keyframes spin    { to { transform:rotate(360deg); } }
@keyframes blink   { 0%,100% { opacity:1; } 50% { opacity:0; } }
@keyframes toastIn  { from { opacity:0; transform:translateX(16px); } to { opacity:1; transform:none; } }
@keyframes toastOut { to   { opacity:0; transform:translateX(16px); } }