@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

/* Design tokens (dataviz reference palette) + a small type system.
   Roles: .eyebrow = constant region label (uppercase, muted);
          .meta = descriptive/technical metadata (muted sentence case);
          data values = ink, tabular, semibold; color carries meaning only. */
.viz-root {
  --surface-1: #fcfcfb;
  --plane: #f7f7f4;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #8b8983;
  --hair: #e6e5df;
  --ring: rgba(11, 11, 11, 0.08);
  --shadow: 0 1px 2px rgba(11, 11, 11, 0.04), 0 8px 24px rgba(11, 11, 11, 0.05);

  --s0: #2a78d6;  /* session hues: blue / aqua / yellow (validated trio) */
  --s1: #1baf7a;
  --s2: #eda100;
  --s3: #4a3aa7; --s4: #e87ba4; --s5: #eb6834;

  --cached: #0ca30c;   /* reused from cache — "free" */
  --new: #ec835a;      /* freshly prefilled — the real cost */

  color-scheme: light dark;
  background: var(--plane);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 14px; line-height: 1.5; -webkit-font-smoothing: antialiased;
  margin: 0; min-height: 100vh;
}
@media (prefers-color-scheme: dark) {
  .viz-root {
    --surface-1: #1a1a19; --plane: #0d0d0d; --ink: #ffffff; --ink-2: #c3c2b7;
    --muted: #8b8983; --hair: #2c2c2a; --ring: rgba(255, 255, 255, 0.10); --shadow: none;
    --s0: #3987e5; --s1: #199e70; --s2: #c98500;
    --s3: #9085e9; --s4: #d55181; --s5: #d95926;
    --cached: #0ca30c; --new: #ec835a;
  }
}

/* ---- type system ---- */
.mono { font-variant-numeric: tabular-nums; }
h1 { margin: 0; font-size: 15px; font-weight: 650; letter-spacing: -0.01em; }
h2, .eyebrow { margin: 0; font-size: 11px; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: .06em; }
.meta, .hint { font-size: 12px; font-weight: 400; color: var(--muted);
  text-transform: none; letter-spacing: 0; }

/* ---- centered page container (professional max-width, not full-bleed) ---- */
.app { max-width: 1160px; margin: 0 auto; padding: 0 24px 56px; }

/* ---- sticky top bar: brand + state (left), controls (right) ---- */
.topbar { position: sticky; top: 0; z-index: 10;
  background: color-mix(in oklab, var(--plane) 86%, transparent);
  backdrop-filter: saturate(1.6) blur(10px);
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  padding: 13px 0; border-bottom: 1px solid var(--hair); }
/* hybrid: model id in mono (a technical token), the rest in the UI sans */
.title .sub { margin: 3px 0 0; font-size: 12px; color: var(--muted); }
.title .sub .id { font-family: ui-monospace, "SF Mono", Menlo, monospace;
  color: var(--ink-2); letter-spacing: -0.01em; }
/* neutral segmented tabs — mature, not an "app" pill */
.tabs { display: flex; align-items: center; gap: 2px; }
.tabs a { text-decoration: none; color: var(--muted); font-weight: 500; font-size: 14px;
  letter-spacing: -0.006em; padding: 5px 11px; border-radius: 7px;
  transition: color .15s, background .15s; }
.tabs a:hover:not(.on) { color: var(--ink); background: color-mix(in oklab, var(--ink) 5%, transparent); }
.tabs a.on { color: var(--ink); font-weight: 600; background: color-mix(in oklab, var(--ink) 7%, transparent); }
.live { font-size: 10px; color: var(--cached); margin-left: 8px; opacity: .3;
  letter-spacing: .04em; text-transform: uppercase; }
.viz-root.playing .live { animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: .3; } 50% { opacity: 1; } }
.transport { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 280px; }
.btn { border: 1px solid var(--ring); background: var(--surface-1); color: var(--ink);
  width: 32px; height: 32px; border-radius: 8px; cursor: pointer; }
.btn:hover { border-color: var(--muted); }
.scrub { flex: 1; accent-color: var(--s0); }
#step-label { color: var(--ink-2); font-size: 12px; }

/* ---- dashboard: cards that wrap, no fixed positions ---- */
.stage { display: flex; flex-wrap: wrap; gap: 14px; padding: 18px 0 0; align-content: start; }
.card { background: var(--surface-1); border: 1px solid var(--hair); border-radius: 14px;
  padding: 16px; box-shadow: var(--shadow); }
.hero { flex: 1 1 260px; display: grid; place-content: center; text-align: center; }
.growth { flex: 2.2 1 460px; display: flex; flex-direction: column; min-width: 0; }
.metrics { flex: 1 1 100%; }

.hero-num { display: flex; flex-direction: column; gap: 5px; }
.big { font-size: 54px; font-weight: 700; line-height: 1; color: var(--cached); letter-spacing: -0.02em; }
.hero-label { color: var(--ink-2); font-size: 13px; }
.hero-note { color: var(--muted); font-size: 12px; }

/* sparkline */
.spark { width: 100%; height: 168px; display: block; margin-top: 4px; }
.legend { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 10px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ink-2); }
.legend i { width: 9px; height: 9px; border-radius: 3px; display: inline-block; }

/* tiles: label (constant) small caps · value (changing) large · note (meta) */
.tiles { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.tile { display: flex; flex-direction: column; gap: 3px; padding: 12px 14px;
  border: 1px solid var(--hair); border-radius: 12px; }
.tile-label { font-size: 11px; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: .05em; }
.tile-value { font-size: 23px; font-weight: 650; letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums; transition: color .25s; }
.tile-value.flash { color: var(--s0); }
.tile-note { font-size: 11px; color: var(--muted); }

/* horizontal split of KV memory by attention type */
.membar { margin-top: 14px; }
.membar-track { display: flex; height: 10px; border-radius: 999px; overflow: hidden;
  background: var(--hair); gap: 2px; margin: 8px 0; }

/* ---- sessions (bottom): the live event stream ---- */
.chat { margin-top: 14px; background: var(--surface-1); border: 1px solid var(--hair);
  border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; }
.chat-head { display: flex; justify-content: space-between; align-items: baseline; gap: 20px;
  padding: 14px 16px; border-bottom: 1px solid var(--hair); }
.chat-head-l { display: flex; flex-direction: column; gap: 3px; }
.chat-log { padding: 14px 16px; display: flex; flex-direction: column; gap: 12px; }

.turn { display: flex; gap: 12px; animation: drop .32s cubic-bezier(.2,.7,.3,1); }
@keyframes drop { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: none; } }
.turn.active .turn-body { border-color: color-mix(in oklab, var(--sess) 50%, var(--hair)); }

/* chat avatar: a distinct face per session (DiceBear) on a soft session-tinted
   circle with a muted ring; a small badge carries the session id. Offline
   fallback is the colored initial. */
.avatar { position: relative; flex: none; width: 40px; height: 40px; border-radius: 50%;
  background: color-mix(in oklab, var(--sess) 15%, var(--surface-1));
  border: 2px solid color-mix(in oklab, var(--sess) 40%, var(--surface-1));
  display: grid; place-items: center; box-sizing: border-box; }
.avatar img { grid-area: 1/1; width: 100%; height: 100%; border-radius: 50%; }
.badge { position: absolute; right: -5px; bottom: -5px; padding: 1px 4px; border-radius: 8px;
  font-size: 9px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--ink);
  background: color-mix(in oklab, var(--sess) 22%, var(--surface-1));
  border: 1.5px solid color-mix(in oklab, var(--sess) 55%, var(--surface-1)); }

.turn-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 8px;
  background: var(--plane); border: 1px solid var(--hair); border-radius: 12px; padding: 11px 13px; }
.turn-head { display: flex; align-items: baseline; gap: 8px; }
.who { font-size: 13px; font-weight: 600; color: var(--ink); }
.when { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }

/* cached / new split bar */
.split { display: flex; height: 7px; border-radius: 999px; overflow: hidden; background: var(--hair); }
.seg { height: 100%; transition: flex-grow .3s ease; }
.seg.cached { background: var(--cached); }
.seg.new { background: var(--new); }
.split-labels { display: flex; justify-content: space-between; font-size: 11px;
  font-variant-numeric: tabular-nums; }
.lbl-cached { color: var(--cached); font-weight: 600; }
.lbl-new { color: var(--new); font-weight: 600; }

.ask { color: var(--ink); font-size: 13px; white-space: pre-wrap; word-break: break-word; }
.reply { color: var(--ink-2); font-size: 13px; white-space: pre-wrap; word-break: break-word; }
.clamp { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; }
.reply.clamp { -webkit-line-clamp: 2; }
.reply.redacted { color: var(--muted); font-style: italic; font-size: 12px; }
.more { align-self: flex-start; background: none; border: none; color: var(--s0);
  cursor: pointer; font-size: 12px; padding: 0; }
.more:hover { text-decoration: underline; }