/* ═══════════════════════════════════════════════════════════════════
   GraphQ — Dark Theme Stylesheet
   ═══════════════════════════════════════════════════════════════════ */

:root {
  --bg:       #0d1117;
  --surface:  #161b22;
  --surface2: #21262d;
  --border:   #30363d;
  --accent:   #6366f1;
  --cyan:     #22d3ee;
  --amber:    #f59e0b;
  --green:    #22c55e;
  --red:      #ef4444;
  --text:     #e6edf3;
  --muted:    #8b949e;
  --code-bg:  #1c2128;
  --radius:   10px;
  --font:     -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono:     'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Disclaimer Banner ─────────────────────────────────────────── */
.disclaimer-banner {
  background: rgba(245, 158, 11, 0.08);
  border-bottom: 1px solid rgba(245, 158, 11, 0.25);
  color: #fbbf24;
  font-size: 12px;
  padding: 8px 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.disclaimer-banner .disclaimer-icon { font-size: 15px; }
.disclaimer-banner em { opacity: 0.8; }
.disclaimer-banner code {
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: var(--mono);
  font-size: 11px;
}

/* ── Header ───────────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo h1 { font-size: 20px; font-weight: 700; letter-spacing: -0.5px; }
.logo svg { flex-shrink: 0; }
.tagline {
  font-size: 11px;
  color: var(--muted);
  font-family: var(--mono);
  letter-spacing: 0.5px;
  margin-right: 16px;
}
.header-right { display: flex; align-items: center; }

/* Dev toggle */
.dev-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 12px;
  color: var(--muted);
  user-select: none;
}
.dev-toggle input { cursor: pointer; accent-color: var(--amber); }
.dev-toggle span { font-family: var(--mono); }

/* ── Status Bar ───────────────────────────────────────────────── */
.status-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  min-height: 38px;
}
.status-chip {
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11px;
  background: var(--surface2);
}
.dot-red::before { content: '●'; color: var(--red); margin-right: 5px; }
.dot-green::before { content: '●'; color: var(--green); margin-right: 5px; }
.dot-amber::before { content: '●'; color: var(--amber); margin-right: 5px; }
.dot-gray::before { content: '●'; color: var(--muted); margin-right: 5px; }
.dot-blue::before { content: '●'; color: #3b82f6; margin-right: 5px; }

/* Status bar states */
.status-bar.ok    .status-chip { border-color: rgba(34,197,94,0.3); background: rgba(34,197,94,0.08); }
.status-bar.error .status-chip { border-color: rgba(239,68,68,0.3);  background: rgba(239,68,68,0.08);  }
.status-bar.load  .status-chip { border-color: rgba(99,102,241,0.3); background: rgba(99,102,241,0.08);  }

/* Spinner */
.spinner {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Main Layout ──────────────────────────────────────────────── */
.main {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 0;
  height: calc(100vh - 120px);
  overflow: hidden;
}

/* ── Panels ──────────────────────────────────────────────────── */
.panel {
  padding: 20px;
  overflow-y: auto;
  border-right: 1px solid var(--border);
}
.panel h2 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}

/* ── Upload Panel ─────────────────────────────────────────────── */
.upload-panel { background: var(--surface); }

/* Drop zone */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  margin-bottom: 16px;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(99,102,241,0.05);
}
.drop-content p { margin: 10px 0 4px; font-size: 13px; color: var(--muted); }
.drop-content strong { color: var(--accent); cursor: pointer; }

/* File info */
.file-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--surface2);
  border-radius: var(--radius);
  margin-bottom: 12px;
  font-size: 12px;
}
.file-name { flex: 1; font-family: var(--mono); color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: var(--radius);
  border: none;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  font-family: var(--font);
  width: 100%;
  margin-top: 8px;
}
.btn:hover:not(:disabled) { opacity: 0.88; transform: translateY(-1px); }
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary  { background: var(--accent); color: #fff; }
.btn-build    { background: linear-gradient(135deg, #6366f1, #8b5cf6); color: #fff; }
.btn-query    { background: var(--cyan); color: #0d1117; font-weight: 700; }
.btn-ghost    { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn-success  { background: var(--green); color: #fff; }

/* Preview */
.preview-box {
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.preview-header {
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--surface2);
  font-size: 12px;
  color: var(--muted);
}
.result-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-top: 10px;
  transition: border-color 0.2s;
}
.result-card:hover { border-color: var(--accent); }
.result-meta {
  font-size: 11px;
  color: var(--muted);
  font-family: var(--mono);
  margin-bottom: 8px;
}
.result-text {
  font-size: 13px;
  color: var(--text);
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}
.result-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.result-rank {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--mono);
}
.result-score {
  font-size: 11px;
  font-family: var(--mono);
  color: var(--cyan);
  background: rgba(34,211,238,0.1);
  padding: 2px 7px;
  border-radius: 10px;
}
.result-chunk { font-size: 11px; color: var(--muted); font-family: var(--mono); margin-left: auto; }
.result-chars { font-size: 10px; color: var(--muted); margin-top: 8px; font-family: var(--mono); }

/* Disclaimer */
.disclaimer {
  font-size: 11px;
  color: #fbbf24;
  background: rgba(251,191,36,0.06);
  border: 1px solid rgba(251,191,36,0.2);
  border-radius: 6px;
  padding: 8px 10px;
  margin-top: 10px;
}

/* Doc list */
.doc-list { margin-top: 16px; }
.doc-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  margin-bottom: 6px;
  background: var(--surface2);
  font-size: 12px;
}
.doc-name { flex: 1; font-family: var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doc-meta { color: var(--muted); font-family: var(--mono); font-size: 10px; }
.doc-status { font-size: 10px; padding: 2px 7px; border-radius: 10px; }
.doc-status.indexed { background: rgba(34,197,94,0.12); color: var(--green); }
.doc-status.uploaded { background: rgba(99,102,241,0.12); color: var(--accent); }

/* ── Result Panel ─────────────────────────────────────────────── */
.result-panel {
  background: var(--bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Tabs */
.tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.tab {
  padding: 8px 20px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  font-family: var(--font);
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

/* Search pane */
#searchPane { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; }

/* Dev panel */
.dev-panel {
  background: var(--surface);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: var(--radius);
  overflow: hidden;
}
.dev-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  background: rgba(245,158,11,0.08);
  border-bottom: 1px solid rgba(245,158,11,0.2);
  font-size: 12px;
  color: var(--amber);
  font-weight: 600;
}
.metrics-output {
  padding: 12px;
  max-height: 300px;
  overflow-y: auto;
}
.metrics-output pre {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cyan);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
}

/* Trace styles */
.trace-container { margin-top: 10px; }
.trace-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: rgba(99,102,241,0.1);
  border-radius: var(--radius) var(--radius) 0 0;
  border: 1px solid rgba(99,102,241,0.2);
  font-size: 12px;
}
.trace-label { color: var(--accent); font-weight: 700; font-family: var(--mono); }
.trace-meta { color: var(--muted); font-family: var(--mono); font-size: 11px; }

.trace-step {
  border: 1px solid var(--border);
  border-top: none;
  cursor: pointer;
}
.trace-step-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: var(--surface2);
  transition: background 0.15s;
}
.trace-step-header:hover { background: var(--surface); }
.step-num {
  width: 22px; height: 22px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; flex-shrink: 0;
}
.step-name { font-weight: 600; font-size: 13px; color: var(--text); }
.step-desc { font-size: 11px; color: var(--muted); margin-left: auto; }
.trace-step-body pre {
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: #a5d6ff;
  background: var(--code-bg);
  overflow-x: auto;
  margin: 0;
  border-top: 1px solid var(--border);
}
.trace-result { margin-left: 0; }

/* Search bar */
.search-bar { position: sticky; top: 0; background: var(--bg); z-index: 5; padding-top: 4px; }
.search-bar textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  padding: 10px 14px;
  resize: none;
  outline: none;
  transition: border-color 0.2s;
}
.search-bar textarea:focus { border-color: var(--accent); }
.search-bar textarea:disabled { opacity: 0.5; cursor: not-allowed; }
.search-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
}
.topk-control {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}
.topk-control select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 5px 8px;
  font-family: var(--font);
  cursor: pointer;
}
.search-controls .btn { width: auto; margin-top: 0; flex-shrink: 0; }

/* Results */
#results { display: flex; flex-direction: column; gap: 0; }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
}
.empty-state p { font-size: 13px; line-height: 1.6; }

/* ── Graph Pane ───────────────────────────────────────────────── */
#graphPane { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.graph-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--muted);
}
.graph-header span:first-child { font-weight: 600; color: var(--text); font-size: 13px; }
.graph-container {
  flex: 1;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  min-height: 400px;
}
.graph-container svg { width: 100%; height: 100%; display: block; }

/* ── Utilities ─────────────────────────────────────────────────── */
.muted { color: var(--muted); font-size: 11px; }
.hidden { display: none !important; }
pre { font-family: var(--mono); }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .main { grid-template-columns: 1fr; grid-template-rows: auto 1fr; height: auto; overflow: auto; }
  .panel { border-right: none; border-bottom: 1px solid var(--border); }
  .result-panel { min-height: 60vh; }
}