/* Portfolio Chatbot — demo page ("behind the scenes").
   Shares the widget's "Nocturne glass" aesthetic: deep ink, frosted surfaces,
   a warm amber accent, Fraunces display serif + JetBrains Mono for the transcript. */

:root {
  --accent: #f0b429;
  --accent-2: #4dd0e1;          /* cool counter-accent for tool/observation */
  --ink: #0b0d13;
  --ink-2: #12151f;
  --panel: rgba(22, 26, 37, 0.72);
  --line: rgba(255, 255, 255, 0.09);
  --text: #eef1f7;
  --muted: #99a2b2;
  --radius: 16px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(240, 180, 41, 0.12), transparent 55%),
    radial-gradient(900px 620px at -5% 15%, rgba(77, 208, 225, 0.10), transparent 55%),
    var(--ink);
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
/* faint grain for depth */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; opacity: 0.035; z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: var(--accent); text-underline-offset: 2px; }

.wrap { position: relative; z-index: 1; max-width: 1140px; margin: 0 auto; padding: 48px 24px 80px; }

/* ---- header ---- */
.masthead { margin-bottom: 12px; }
.eyebrow {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 10px;
}
h1 {
  font-family: var(--serif); font-weight: 600; font-size: clamp(34px, 5vw, 56px);
  line-height: 1.02; margin: 0 0 14px; letter-spacing: -0.5px;
}
h1 em { font-style: italic; color: var(--accent); }
.lede { color: var(--muted); font-size: 16px; max-width: 62ch; margin: 0 0 8px; }
.stat-strip { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.chip {
  font-family: var(--mono); font-size: 12px; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px;
  background: rgba(255,255,255,0.02);
}
.chip b { color: var(--text); font-weight: 600; }
.chip .dot { color: var(--accent-2); }

/* ---- layout ---- */
.grid { display: grid; grid-template-columns: 1.55fr 1fr; gap: 22px; margin-top: 30px; align-items: start; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }

.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  backdrop-filter: blur(14px) saturate(1.2);
  box-shadow: 0 20px 60px -30px rgba(0,0,0,0.8);
}
.panel-h {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 16px 18px; border-bottom: 1px solid var(--line);
}
.panel-h h2 { font-family: var(--serif); font-size: 19px; font-weight: 600; margin: 0; }
.panel-h .hint { font-family: var(--mono); font-size: 11px; color: var(--muted); }
.panel-b { padding: 18px; }

/* ---- ask form ---- */
.ask { display: flex; gap: 10px; }
.ask input {
  flex: 1; padding: 13px 15px; border-radius: 12px; font-size: 15px; color: var(--text);
  background: rgba(0,0,0,0.35); border: 1px solid var(--line); font-family: var(--sans);
}
.ask input:focus { outline: none; border-color: color-mix(in srgb, var(--accent) 55%, transparent); box-shadow: 0 0 0 3px rgba(240,180,41,0.16); }
.ask button {
  padding: 0 20px; border: none; border-radius: 12px; font-weight: 650; cursor: pointer; color: #1a1205;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 96%, #fff), var(--accent));
  transition: transform .15s, filter .15s;
}
.ask button:hover:not(:disabled) { filter: brightness(1.06); }
.ask button:active:not(:disabled) { transform: scale(.96); }
.ask button:disabled { opacity: .5; cursor: default; }

.examples { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.ex {
  font-size: 12.5px; color: var(--muted); cursor: pointer;
  border: 1px dashed var(--line); border-radius: 999px; padding: 5px 12px; background: transparent;
  transition: border-color .15s, color .15s;
}
.ex:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }

/* ---- conversation thread ---- */
.thread {
  display: flex; flex-direction: column; gap: 12px;
  max-height: 440px; overflow-y: auto; margin-bottom: 16px; padding-right: 4px;
  scrollbar-width: thin;
}
.thread::-webkit-scrollbar { width: 7px; }
.thread::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }
.thread-empty { color: var(--muted); font-size: 14px; line-height: 1.6; padding: 8px 2px; }
.msg { display: flex; }
.msg-user { justify-content: flex-end; }
.msg-bubble {
  max-width: 82%; padding: 11px 14px; border-radius: 14px; font-size: 14.5px;
  line-height: 1.6; overflow-wrap: anywhere; animation: slidein .26s ease both;
}
.msg-bot .msg-bubble {
  background: rgba(0,0,0,0.30); border: 1px solid var(--line); border-bottom-left-radius: 5px;
}
.msg-user .msg-bubble {
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 20%, var(--ink-2)), color-mix(in srgb, var(--accent) 11%, var(--ink-2)));
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent); border-bottom-right-radius: 5px;
}
.msg-bubble a { color: var(--accent); text-decoration: underline; }
.msg-bubble.err { color: #ff9b9b; }
.typing { display: inline-flex; gap: 4px; padding: 3px 0; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); display: inline-block; animation: pcb-bounce 1.2s infinite ease-in-out; }
.typing i:nth-child(2) { animation-delay: .15s; } .typing i:nth-child(3) { animation-delay: .3s; }
@keyframes pcb-bounce { 0%, 60%, 100% { transform: translateY(0); opacity: .5; } 30% { transform: translateY(-5px); opacity: 1; } }

/* ---- top bar (portfolio + blog links) ---- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  flex-wrap: wrap; margin-bottom: 30px; padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.topbar .brand {
  font-family: var(--serif); font-size: 18px; font-weight: 600; color: var(--text);
  text-decoration: none; letter-spacing: .2px;
}
.topbar .brand:hover { color: var(--accent); }
.topbar-links { display: flex; flex-wrap: wrap; gap: 8px; }
.topbar-links a {
  font-family: var(--mono); font-size: 12.5px; color: var(--muted); text-decoration: none;
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 14px;
  background: rgba(255,255,255,0.02); transition: border-color .15s, color .15s;
}
.topbar-links a:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }

/* ---- reset button + activity turn tag ---- */
.reset {
  font-family: var(--mono); font-size: 11.5px; color: var(--muted); cursor: pointer;
  border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; background: transparent;
  transition: border-color .15s, color .15s;
}
.reset:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.activity-turn { color: var(--accent-2); }

/* ---- activity log ---- */
.activity { margin-top: 22px; }
.activity-h { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.steps { display: flex; flex-direction: column; gap: 8px; }
.step {
  display: flex; gap: 10px; align-items: flex-start; font-size: 13.5px;
  padding: 9px 12px; border-radius: 10px; border: 1px solid var(--line);
  background: rgba(255,255,255,0.02); animation: slidein .28s ease both;
}
.step .ic { flex: none; width: 22px; text-align: center; }
.step .tx { flex: 1; min-width: 0; }
.step .tx code { font-family: var(--mono); font-size: 12.5px; color: var(--accent-2); background: rgba(77,208,225,0.08); padding: 1px 6px; border-radius: 6px; }
.step.k-tool { border-color: color-mix(in srgb, var(--accent-2) 30%, transparent); }
.step.k-final { border-color: color-mix(in srgb, var(--accent) 35%, transparent); background: rgba(240,180,41,0.06); }
.step .meta { color: var(--muted); font-size: 12px; margin-top: 2px; word-break: break-word; }

/* transcript accordion */
details.transcript { margin-top: 16px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
details.transcript > summary {
  cursor: pointer; list-style: none; padding: 11px 14px; font-family: var(--mono); font-size: 12px;
  color: var(--muted); background: rgba(255,255,255,0.02);
}
details.transcript > summary::-webkit-details-marker { display: none; }
details.transcript > summary::before { content: "▸ "; color: var(--accent); }
details.transcript[open] > summary::before { content: "▾ "; }
.transcript-body { padding: 6px 14px 14px; }
.tblock { margin-top: 12px; }
.tblock .th { font-family: var(--mono); font-size: 11px; color: var(--accent); margin-bottom: 5px; letter-spacing: .06em; }
.tblock pre {
  margin: 0; font-family: var(--mono); font-size: 12px; line-height: 1.5; color: #cfd6e4;
  background: rgba(0,0,0,0.4); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px;
  white-space: pre-wrap; word-break: break-word; max-height: 260px; overflow: auto;
}

/* ---- indexed pages (right) ---- */
.pages { display: flex; flex-direction: column; gap: 2px; max-height: 620px; overflow: auto; }
.pg { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; padding: 9px 4px; border-bottom: 1px solid var(--line); }
.pg:last-child { border-bottom: none; }
.pg a, .pg span.t { flex: 1; min-width: 0; font-size: 14px; line-height: 1.4; color: var(--text); text-decoration: none; overflow-wrap: anywhere; }
.pg a:hover { color: var(--accent); }
.pg .c { font-family: var(--mono); font-size: 11px; color: var(--muted); flex: none; }
.pages-empty { color: var(--muted); font-size: 13px; }

.mcp-note {
  margin-top: 16px; font-size: 12.5px; color: var(--muted); line-height: 1.5;
  border-top: 1px dashed var(--line); padding-top: 14px;
}
.mcp-note b { color: var(--text); }

/* ---- how it works (bottom explainer) ---- */
.how { margin-top: 56px; padding-top: 40px; border-top: 1px solid var(--line); }
.how-h h2 { font-family: var(--serif); font-weight: 600; font-size: clamp(24px, 3.2vw, 34px); margin: 6px 0 12px; letter-spacing: -0.3px; }
.how-lede { color: var(--muted); font-size: 15.5px; max-width: 68ch; margin: 0; }
.pipe {
  list-style: none; padding: 0; margin: 30px 0 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  counter-reset: none;
}
@media (max-width: 900px) { .pipe { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .pipe { grid-template-columns: 1fr; } }
.pipe li {
  position: relative; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 18px 18px;
  backdrop-filter: blur(14px) saturate(1.2);
}
.pipe .n {
  display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 9px;
  font-family: var(--mono); font-size: 14px; font-weight: 600; color: #1a1205;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 96%, #fff), var(--accent));
  margin-bottom: 12px;
}
.pipe h3 { font-family: var(--serif); font-size: 18px; font-weight: 600; margin: 0 0 6px; }
.pipe p { color: var(--muted); font-size: 13.8px; line-height: 1.55; margin: 0; }
.pipe code { font-family: var(--mono); font-size: 12.5px; color: var(--accent-2); background: rgba(77,208,225,0.08); padding: 1px 6px; border-radius: 6px; }
.how-foot { margin-top: 24px; color: var(--muted); font-size: 14px; }
.how-foot a { text-decoration: underline; }

.foot { margin-top: 40px; color: var(--muted); font-size: 12.5px; font-family: var(--mono); }

@keyframes fade { from { opacity: 0; } }
@keyframes slidein { from { opacity: 0; transform: translateX(-6px); } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; } }