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

:root {
  --bg-base:        #0e0e10;
  --bg-surface:     #141416;
  --bg-elevated:    #1a1a1e;
  --bg-hover:       #202026;
  --bg-active:      #25252d;
  --border:         #2a2a32;
  --border-focus:   #4a90e8;
  --text-primary:   #d4d4d8;
  --text-secondary: #71717a;
  --text-muted:     #3f3f46;
  --text-bright:    #f4f4f5;
  --accent:         #4a90e8;
  --accent-dim:     #1e3a5f;
  --accent-glow:    rgba(74, 144, 232, 0.15);
  --green:          #4ade80;
  --yellow:         #facc15;
  --red:            #f87171;
  --purple:         #c084fc;
  --topbar-h:       60px;
  --sidebar-w:      320px;
  --radius:         6px;
  --radius-lg:      10px;
  --font-ui:        'Syne', sans-serif;
  --font-mono:      'JetBrains Mono', monospace;
  --transition:     150ms ease;
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Topbar ────────────────────────────────────────────────────────────────── */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  z-index: 100;
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.topbar__icon {
  font-size: 20px;
  color: var(--accent);
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.topbar__title {
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--text-bright);
  white-space: nowrap;
}

.topbar__index {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 680px;
}

.path-input {
  flex: 1;
  height: 34px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 0 12px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

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

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

.topbar__zip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-left: 16px;
  border-left: 1px solid var(--border);
  flex-shrink: 0;
}

.btn--zip {
  height: 34px;
  padding: 0 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 13px;
  gap: 6px;
  cursor: pointer;
  transition: all var(--transition);
}
.btn--zip:hover { border-color: var(--accent); color: var(--text-primary); }
.btn--zip.has-file { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 13px;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
  outline: none;
}

.btn:active:not(:disabled) { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn--primary {
  height: 34px;
  padding: 0 18px;
  background: var(--accent);
  color: #fff;
}
.btn--primary:hover:not(:disabled) { background: #3b7dd8; }

.btn--send {
  width: 40px; height: 40px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  flex-shrink: 0;
}
.btn--send:hover:not(:disabled) { background: #3b7dd8; }

/* ── Status Badge ──────────────────────────────────────────────────────────── */
.status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
  flex-shrink: 0;
  border: 1px solid transparent;
  font-family: var(--font-mono);
}

.status-badge__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
}

.status-badge--idle    { background: var(--bg-elevated); border-color: var(--border); color: var(--text-secondary); }
.status-badge--idle    .status-badge__dot { background: var(--text-muted); }

.status-badge--indexing { background: rgba(250,204,21,.08); border-color: rgba(250,204,21,.3); color: var(--yellow); }
.status-badge--indexing .status-badge__dot { background: var(--yellow); animation: blink .8s ease-in-out infinite; }

.status-badge--ready   { background: rgba(74,222,128,.08); border-color: rgba(74,222,128,.3); color: var(--green); }
.status-badge--ready   .status-badge__dot { background: var(--green); }

.status-badge--error   { background: rgba(248,113,113,.08); border-color: rgba(248,113,113,.3); color: var(--red); }
.status-badge--error   .status-badge__dot { background: var(--red); }

@keyframes blink { 0%,100% { opacity:1; } 50% { opacity:.2; } }

/* ── Workspace ─────────────────────────────────────────────────────────────── */
.workspace {
  display: flex;
  position: fixed;
  top: var(--topbar-h); left: 0; right: 0; bottom: 0;
}

/* ── Sidebar ───────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sidebar__label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.sidebar__count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
}

.tree-container {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.tree-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 12px;
  padding: 40px 20px;
  text-align: center;
}

.tree-placeholder__icon { font-size: 32px; color: var(--text-muted); opacity: .5; }
.tree-placeholder p { font-size: 12px; color: var(--text-muted); line-height: 1.6; }

/* ── Tree Nodes ────────────────────────────────────────────────────────────── */
.tree-node { user-select: none; }

.tree-node__row {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  cursor: pointer;
  border-radius: 4px;
  margin: 0 6px;
  transition: background var(--transition);
  min-height: 24px;
}

.tree-node__row:hover   { background: var(--bg-hover); }
.tree-node__row.selected { background: var(--accent-dim); }

.tree-node__toggle {
  width: 14px; text-align: center;
  font-size: 9px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.tree-node__toggle.open { transform: rotate(90deg); }

.tree-node__icon  { font-size: 12px; flex-shrink: 0; }
.tree-node__name  {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-node__children         { display: none; }
.tree-node__children.open    { display: block; }

.tree-node[data-depth="1"] .tree-node__row { padding-left: 20px; }
.tree-node[data-depth="2"] .tree-node__row { padding-left: 34px; }
.tree-node[data-depth="3"] .tree-node__row { padding-left: 48px; }

.icon-module   { color: var(--yellow); }
.icon-file     { color: #60a5fa; }
.icon-class    { color: var(--purple); }
.icon-function { color: var(--green); }

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

/* ── Query Controls ────────────────────────────────────────────────────────── */
.query-controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  flex-shrink: 0;
}

.query-type-group, .macro-subtypes {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.query-type-btn, .subtype-btn {
  padding: 7px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.02em;
}

.query-type-btn:hover, .subtype-btn:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.query-type-btn.active, .subtype-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.context-inputs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.context-field {
  height: 30px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 0 10px;
  outline: none;
  min-width: 160px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

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

.context-field::placeholder { color: var(--text-muted); }

/* ── Messages ──────────────────────────────────────────────────────────────── */
.messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.message {
  display: flex;
  flex-direction: column;
  gap: 6px;
  animation: fadeSlideIn 200ms ease both;
}

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

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

.message__role {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.message--user      .message__role { color: var(--accent); }
.message--system    .message__role { color: var(--text-muted); }
.message--assistant .message__role { color: var(--green); }
.message--error     .message__role { color: var(--red); }
.message--thinking  .message__role { color: var(--yellow); }

.message__badge {
  font-size: 10px;
  font-family: var(--font-mono);
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--bg-elevated);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.message__content {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  line-height: 1.7;
}

.message--user .message__content {
  background: var(--accent-dim);
  border-color: rgba(74,144,232,.3);
  align-self: flex-end;
  max-width: 80%;
}

.message--error .message__content {
  background: rgba(248,113,113,.06);
  border-color: rgba(248,113,113,.25);
  color: var(--red);
}

.message--thinking .message__content {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ── Markdown ──────────────────────────────────────────────────────────────── */
.message__content h1,
.message__content h2,
.message__content h3 {
  font-family: var(--font-ui);
  font-weight: 700;
  color: var(--text-bright);
  margin-top: 20px;
  margin-bottom: 8px;
  line-height: 1.3;
}
.message__content h1 { font-size: 18px; }
.message__content h2 { font-size: 15px; color: var(--accent); }
.message__content h3 { font-size: 13px; }
.message__content h1:first-child,
.message__content h2:first-child { margin-top: 0; }

.message__content p  { margin-bottom: 10px; font-size: 15px; }
.message__content p:last-child { margin-bottom: 0; }

.message__content ul,
.message__content ol { padding-left: 20px; margin-bottom: 10px; }
.message__content li { margin-bottom: 4px; font-size: 15px; }

.message__content strong { color: var(--text-bright); font-weight: 700; }
.message__content em     { color: var(--text-secondary); }

.message__content code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--bg-active);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--purple);
}

.message__content pre {
  background: #0d0d10 !important;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  overflow-x: auto;
  margin: 12px 0;
}
.message__content pre code {
  background: none; border: none; padding: 0;
  color: var(--text-primary); font-size: 12px;
}

.message__content table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 12.5px;
  font-family: var(--font-mono);
}
.message__content th {
  background: var(--bg-active);
  color: var(--text-bright);
  font-weight: 700;
  padding: 8px 12px;
  text-align: left;
  border: 1px solid var(--border);
}
.message__content td {
  padding: 7px 12px;
  border: 1px solid var(--border);
}
.message__content tr:hover td { background: var(--bg-hover); }

.message__content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
  margin: 10px 0;
  color: var(--text-secondary);
  font-style: italic;
}

.message__content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

/* ── Input Bar ─────────────────────────────────────────────────────────────── */
.input-bar {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
  flex-shrink: 0;
}

.query-textarea {
  flex: 1;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 15px;
  padding: 10px 14px;
  resize: none;
  outline: none;
  min-height: 40px;
  max-height: 160px;
  overflow-y: auto;
  line-height: 1.5;
  transition: border-color var(--transition), box-shadow var(--transition);
}

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

.query-textarea::placeholder { color: var(--text-muted); }

/* ── Spinner ───────────────────────────────────────────────────────────────── */
.spinner {
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display: none !important; }