/* ===================================================================
   Azure DevOps Forager — terminal-luxe dark theme
   100% self-contained: no web fonts, no CDN, no remote assets.
   =================================================================== */

:root {
  /* surfaces */
  --bg-0: #0a0d12;
  --bg-1: #0e1218;
  --bg-2: #141a22;
  --bg-3: #1a212b;
  --surface: rgba(20, 26, 34, 0.72);
  --surface-solid: #121822;
  --line: rgba(126, 160, 184, 0.14);
  --line-strong: rgba(126, 160, 184, 0.26);

  /* text */
  --txt-0: #eaf1f6;
  --txt-1: #b6c4d0;
  --txt-2: #7d8e9c;
  --txt-3: #56646f;

  /* accents */
  --acc: #3ddc97;          /* signal green */
  --acc-dim: #2bbf7f;
  --acc-soft: rgba(61, 220, 151, 0.14);
  --cyan: #58c7e6;
  --amber: #f5b455;
  --violet: #9d8cff;

  /* badge colors per match source */
  --hybrid: #3ddc97;
  --vector: #58c7e6;
  --fulltext: #f5b455;

  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 18px 50px -20px rgba(0, 0, 0, 0.7);

  --font-ui: "Segoe UI", "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", system-ui, sans-serif;
  --font-mono: "Cascadia Code", "Cascadia Mono", "JetBrains Mono", "Fira Code", "SF Mono", "Consolas", "Liberation Mono", monospace;
}

/* ---- light theme (toggled via [data-theme="light"] on <html>) ---- */
[data-theme="light"] {
  --bg-0: #f5f7fa;
  --bg-1: #eef2f6;
  --bg-2: #e6ebf1;
  --bg-3: #dce3ea;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-solid: #ffffff;
  --line: rgba(40, 66, 92, 0.14);
  --line-strong: rgba(40, 66, 92, 0.26);
  --txt-0: #0f1720;
  --txt-1: #26343f;
  --txt-2: #5a6b78;
  --txt-3: #8593a0;
  --acc: #16a34a;
  --acc-dim: #12833d;
  --acc-soft: rgba(22, 163, 74, 0.12);
  --shadow: 0 18px 50px -24px rgba(30, 50, 70, 0.28);
}
[data-theme="light"] .bg-grid,
[data-theme="light"] .bg-glow { opacity: 0.4; }

/* ---- day / night toggle ---- */
.topbar-right { display: flex; align-items: center; gap: 12px; }
.theme-toggle {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--txt-1);
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  font-size: 15px; line-height: 1;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.theme-toggle:hover { border-color: var(--line-strong); color: var(--txt-0); }

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-ui);
  color: var(--txt-1);
  background: var(--bg-0);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
  overflow-x: hidden;
}

/* ---------- atmospheric background ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(126, 160, 184, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 160, 184, 0.045) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 35%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 35%, transparent 85%);
}
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(60rem 40rem at 18% -8%, rgba(61, 220, 151, 0.10), transparent 60%),
    radial-gradient(54rem 38rem at 92% 4%, rgba(88, 199, 230, 0.09), transparent 60%),
    radial-gradient(70rem 50rem at 50% 110%, rgba(157, 140, 255, 0.07), transparent 65%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0) 60%);
}
/* fine grain overlay (pure CSS, no image) */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.035;
  background-image: radial-gradient(#fff 0.5px, transparent 0.6px);
  background-size: 3px 3px;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.4rem clamp(1rem, 4vw, 3rem) 1.2rem;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 0.95rem; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  color: var(--bg-0);
  background: linear-gradient(145deg, var(--acc), var(--cyan));
  box-shadow: 0 8px 24px -8px var(--acc-soft), inset 0 1px 0 rgba(255,255,255,.4);
  flex-shrink: 0;
}
.brand-text h1 {
  margin: 0;
  font-size: 1.32rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  color: var(--txt-0);
}
.brand-text .accent {
  background: linear-gradient(120deg, var(--acc), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.tagline {
  margin: 0.1rem 0 0;
  font-size: 0.8rem;
  color: var(--txt-2);
  letter-spacing: 0.01em;
}
.health {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--txt-2);
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  backdrop-filter: blur(8px);
}
.health .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--txt-3);
  box-shadow: 0 0 0 0 transparent;
  transition: background 0.3s, box-shadow 0.3s;
}
.health.ok .dot { background: var(--acc); box-shadow: 0 0 10px 1px var(--acc-soft); }
.health.bad .dot { background: var(--amber); }

/* ---------- shell ---------- */
.shell {
  width: min(960px, 92vw);
  margin: 0.5rem auto 3rem;
}

/* ---------- mode tabs ---------- */
.modes {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.3rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  backdrop-filter: blur(10px);
  margin-bottom: 1.4rem;
}
.mode-tab {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--txt-2);
  font-family: var(--font-ui);
  font-size: 0.86rem;
  font-weight: 550;
  letter-spacing: 0.01em;
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.mode-tab .mode-ico { font-family: var(--font-mono); opacity: 0.8; }
.mode-tab:hover { color: var(--txt-0); }
.mode-tab.is-active {
  color: var(--bg-0);
  background: linear-gradient(120deg, var(--acc), var(--acc-dim));
  box-shadow: 0 6px 18px -8px var(--acc-soft);
}

/* ---------- panels ---------- */
.panel { animation: fade-up 0.35s ease both; }
.panel.is-hidden { display: none; }
@keyframes fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- search form ---------- */
.search-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}
.search-row { display: flex; gap: 0.7rem; }
.field {
  position: relative;
  display: flex;
  align-items: center;
}
.field.grow { flex: 1; }
.field-ico {
  position: absolute;
  left: 0.95rem;
  color: var(--acc);
  font-family: var(--font-mono);
  font-size: 1rem;
  pointer-events: none;
}
.field input {
  width: 100%;
  font-family: var(--font-ui);
  font-size: 0.98rem;
  color: var(--txt-0);
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem 0.85rem 2.5rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.field input::placeholder { color: var(--txt-3); }
.field input:focus {
  border-color: var(--acc);
  background: var(--bg-3);
  box-shadow: 0 0 0 3px var(--acc-soft);
}

.search-controls {
  display: flex;
  gap: 0.9rem;
  margin-top: 0.85rem;
  flex-wrap: wrap;
}
.ctl { display: flex; flex-direction: column; gap: 0.3rem; flex: 1; min-width: 150px; }
.ctl-narrow { flex: 0 0 110px; min-width: 110px; }
.ctl-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--txt-3);
  font-weight: 600;
}
.ctl select, .ctl input {
  font-family: var(--font-ui);
  font-size: 0.86rem;
  color: var(--txt-0);
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.7rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.ctl select:focus, .ctl input:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px var(--acc-soft);
}
.ctl select { cursor: pointer; }

/* ---------- buttons ---------- */
.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: var(--radius-sm);
  padding: 0 1.5rem;
  transition: transform 0.12s, box-shadow 0.2s, filter 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-primary {
  color: var(--bg-0);
  background: linear-gradient(120deg, var(--acc), var(--acc-dim));
  box-shadow: 0 8px 22px -10px var(--acc-soft);
}
.btn-primary:hover { filter: brightness(1.06); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { opacity: 0.6; cursor: progress; filter: grayscale(0.3); }
.btn.is-loading .btn-label { opacity: 0.5; }
.btn.is-loading::after {
  content: "";
  width: 13px; height: 13px;
  border: 2px solid rgba(10,13,18,0.35);
  border-top-color: var(--bg-0);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- status / empty ---------- */
.status-line {
  min-height: 1.2rem;
  margin: 1.1rem 0.2rem 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--txt-2);
}
.status-line .hl { color: var(--acc); }
.status-line.err { color: var(--amber); }

.empty-state {
  text-align: center;
  padding: 3.5rem 1.5rem;
  color: var(--txt-2);
  max-width: 460px;
  margin: 0 auto;
}
.empty-glyph {
  font-size: 2.4rem;
  font-family: var(--font-mono);
  margin-bottom: 0.7rem;
  filter: saturate(0.9);
}
.empty-state p { margin: 0; font-size: 0.92rem; }

/* ---------- results ---------- */
.results { margin-top: 0.6rem; display: flex; flex-direction: column; gap: 0.85rem; }

.result {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  backdrop-filter: blur(8px);
  overflow: hidden;
  animation: fade-up 0.4s ease both;
  transition: border-color 0.2s, transform 0.2s;
}
.result:hover { border-color: var(--line-strong); }

.result-head {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.95rem 1.1rem;
  cursor: pointer;
  user-select: none;
}
.result-rank {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--txt-3);
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.15rem 0.45rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
}
.result-main { flex: 1; min-width: 0; }
.result-title {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  flex-wrap: wrap;
}
.chunk-name {
  font-family: var(--font-mono);
  font-size: 0.96rem;
  color: var(--txt-0);
  font-weight: 600;
  word-break: break-word;
}
.chunk-type {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--txt-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.08rem 0.4rem;
}
.file-path {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--txt-2);
  margin-top: 0.35rem;
  word-break: break-all;
}
.file-path .ns { color: var(--violet); }
.meta-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 0.55rem;
  flex-wrap: wrap;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.16rem 0.5rem;
  border-radius: 6px;
  border: 1px solid transparent;
}
.badge-hybrid   { color: var(--hybrid);   background: rgba(61,220,151,0.10);  border-color: rgba(61,220,151,0.30); }
.badge-vector   { color: var(--vector);   background: rgba(88,199,230,0.10);  border-color: rgba(88,199,230,0.30); }
.badge-fulltext { color: var(--fulltext); background: rgba(245,180,85,0.10);  border-color: rgba(245,180,85,0.30); }
.badge-muted    { color: var(--txt-2);    background: var(--bg-2);            border-color: var(--line); }

.metric {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--txt-2);
}
.metric b { color: var(--txt-1); font-weight: 600; }
.lines { font-family: var(--font-mono); font-size: 0.72rem; color: var(--txt-3); }

.chevron {
  flex-shrink: 0;
  color: var(--txt-3);
  margin-top: 0.2rem;
  transition: transform 0.25s ease, color 0.2s;
}
.result.open .chevron { transform: rotate(90deg); color: var(--acc); }
.result.open { border-color: var(--line-strong); }

.snippet-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.28s ease;
}
.result.open .snippet-wrap { grid-template-rows: 1fr; }
.snippet-inner { overflow: hidden; }
.snippet {
  margin: 0;
  padding: 1rem 1.1rem 1.15rem;
  border-top: 1px solid var(--line);
  background: var(--bg-1);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--txt-1);
  white-space: pre;
  overflow-x: auto;
  tab-size: 4;
}
.snippet::-webkit-scrollbar { height: 9px; }
.snippet::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 5px; }

.copy-mini {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--txt-2);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.18rem 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  margin-left: auto;
  transition: color 0.15s, border-color 0.15s;
}
.copy-mini:hover { color: var(--acc); border-color: var(--line-strong); }

/* ---------- chat ---------- */
.chat-log {
  min-height: 320px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
}
.msg { animation: fade-up 0.35s ease both; max-width: 100%; }
.msg-q {
  align-self: flex-end;
  max-width: 78%;
  background: linear-gradient(120deg, var(--acc-soft), rgba(88,199,230,0.10));
  border: 1px solid rgba(61,220,151,0.25);
  color: var(--txt-0);
  padding: 0.7rem 1rem;
  border-radius: 14px 14px 4px 14px;
  font-size: 0.92rem;
}
.msg-a {
  align-self: flex-start;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px 14px 14px 14px;
  padding: 1rem 1.15rem;
  backdrop-filter: blur(8px);
}
.msg-a.thinking { color: var(--txt-2); font-family: var(--font-mono); font-size: 0.84rem; }
.msg-a.err { border-color: rgba(245,180,85,0.35); }

.answer-body { font-size: 0.93rem; color: var(--txt-1); }
.answer-body p { margin: 0 0 0.7rem; }
.answer-body p:last-child { margin-bottom: 0; }
.answer-body code.inline {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.05rem 0.35rem;
  color: var(--cyan);
}
.answer-body pre.block {
  margin: 0.6rem 0;
  padding: 0.85rem 1rem;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--txt-1);
  white-space: pre;
}
.answer-body strong { color: var(--txt-0); font-weight: 650; }
.answer-body ul, .answer-body ol { margin: 0 0 0.7rem; padding-left: 1.3rem; }
.answer-body li { margin: 0.2rem 0; }

.sources {
  margin-top: 0.95rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
}
.sources-title {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--txt-3);
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.source-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--txt-1);
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 0.28rem 0.55rem;
  margin: 0 0.4rem 0.4rem 0;
  word-break: break-all;
}
.source-chip::before { content: "▸"; color: var(--cyan); }

.feedback {
  margin-top: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.76rem;
  color: var(--txt-3);
}
.fb-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--txt-2);
  width: 30px; height: 30px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: color 0.15s, border-color 0.15s, background 0.15s, transform 0.1s;
  display: grid; place-items: center;
}
.fb-btn:hover { transform: translateY(-1px); }
.fb-btn.up:hover, .fb-btn.up.sel { color: var(--acc); border-color: rgba(61,220,151,0.4); background: var(--acc-soft); }
.fb-btn.down:hover, .fb-btn.down.sel { color: var(--amber); border-color: rgba(245,180,85,0.4); background: rgba(245,180,85,0.1); }
.fb-btn:disabled { cursor: default; opacity: 0.7; }
.fb-thanks { color: var(--acc); font-family: var(--font-mono); }

.chat-form { display: flex; gap: 0.7rem; }

/* ---------- footer ---------- */
.foot {
  text-align: center;
  padding: 1.5rem 1rem 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--txt-3);
}

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .topbar { padding: 1rem 1.1rem; }
  .brand-text h1 { font-size: 1.12rem; }
  .tagline { font-size: 0.72rem; }
  .search-row { flex-direction: column; }
  .btn { padding: 0.8rem 1.5rem; justify-content: center; }
  .search-controls { flex-direction: column; }
  .ctl, .ctl-narrow { flex: 1; min-width: 0; }
  .msg-q { max-width: 90%; }
  .chat-form { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001s !important; transition-duration: 0.001s !important; }
}
