/* tiny_vllm demo — visual language matched to surajsharan.github.io
 *
 * Tokens lifted from the portfolio CSS:
 *   bg: #0a0e14 (215 30% 5%)   foreground: #fafafa
 *   accent: #c6ff3e (lime)     accent-dim: #8ac91f
 *   card: #0f131a              border: #212833
 *   muted text: ~hsl(215 12% 60%)
 *   fonts: Inter (sans), JetBrains Mono (mono)
 *   radius: 0.5rem
 */

:root {
  --bg: #0a0e14;
  --bg-elev: #0f131a;
  --bg-elev2: #141926;
  --fg: #fafafa;
  --muted: #8d96a3;
  --accent: #c6ff3e;
  --accent-dim: #8ac91f;
  --accent-bg: rgba(198, 255, 62, 0.08);
  --green: #c6ff3e;        /* reuse lime for success */
  --purple: #b78cff;
  --orange: #f0a23e;
  --red: #ff6b6b;
  --border: #212833;
  --border-strong: #2d3645;
  --radius: 0.5rem;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --grid: rgba(255, 255, 255, 0.045);
}

* { box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--fg);
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
  background-attachment: fixed;
}

/* ---------- topbar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(8px);
  font-family: var(--mono);
  font-size: 12px;
  position: sticky; top: 0; z-index: 10;
}
.topbar a { color: var(--fg); text-decoration: none; }
.topbar a:hover { color: var(--accent); }
.topbar .crumb { color: var(--muted); }
.topbar .crumb .sep { margin: 0 6px; }
.topbar .right { display: flex; gap: 14px; align-items: center; }
.topbar .right a { color: var(--muted); }
.topbar .right a:hover { color: var(--accent); }
.topbar .right a.live-link {
  color: var(--bg);
  background: var(--accent);
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 600;
}
.topbar .right a.live-link:hover { background: var(--accent-dim); color: var(--bg); }

header.hero {
  padding: 28px 24px 20px;
  border-bottom: 1px solid var(--border);
}
header.hero h1 {
  margin: 0 0 4px;
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
header.hero h1::before {
  content: "$ ";
  color: var(--accent);
  margin-right: 4px;
}
header.hero .subtitle {
  color: var(--muted);
  font-size: 13px;
  margin: 0;
  max-width: 760px;
}
header.hero .status {
  display: flex; gap: 10px; align-items: center;
  margin-top: 10px;
  font-family: var(--mono); font-size: 11px;
}
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-family: var(--mono); font-size: 11px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elev);
}
.badge::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--muted);
}
.badge.online { color: var(--accent); border-color: var(--accent); }
.badge.online::before { background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.badge.offline { color: var(--red); border-color: rgba(255, 107, 107, 0.4); }
.badge.offline::before { background: var(--red); }
.badge.replay { color: var(--purple); border-color: rgba(183, 140, 255, 0.4); }
.badge.replay::before { background: var(--purple); }

.muted { color: var(--muted); font-weight: 400; }

/* ---------- banner ---------- */
.banner {
  padding: 10px 24px;
  font-family: var(--mono);
  font-size: 12px;
  background: rgba(183, 140, 255, 0.08);
  color: var(--purple);
  border-bottom: 1px solid rgba(183, 140, 255, 0.25);
}
.banner.error, .banner.replay-banner.error {
  background: rgba(255, 107, 107, 0.08);
  color: var(--red);
  border-bottom-color: rgba(255, 107, 107, 0.3);
}

/* ---------- prompt box ---------- */
.prompt-box {
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  display: flex; flex-direction: column; gap: 10px;
}
.prompt-box textarea {
  width: 100%;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 13px;
  resize: vertical;
}
.prompt-box textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}
.controls { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.controls label {
  display: flex; gap: 6px; align-items: center;
  font-family: var(--mono); font-size: 11px;
  color: var(--muted);
  text-transform: lowercase;
}
.controls input {
  width: 70px;
  background: var(--bg); color: var(--fg);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 4px 8px;
  font-family: var(--mono); font-size: 12px;
}
.controls input:focus {
  outline: none; border-color: var(--accent);
}

button {
  background: var(--accent); color: var(--bg);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 6px 14px;
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  cursor: pointer;
  transition: all 0.12s ease;
}
button:hover { background: var(--accent-dim); border-color: var(--accent-dim); }
button:disabled { opacity: 0.55; cursor: not-allowed; background: var(--bg-elev); color: var(--muted); border-color: var(--border); }
/* Replay-mode "soft disable": looks clickable, but Send opens the run-locally
 * hint instead of submitting. We mark it with a class so the cursor and
 * tooltip read as intentional, not broken. */
button.replay-locked { cursor: help; }
button.replay-locked::after { content: " ✦"; color: var(--purple); }
button.ghost {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--fg);
}
button.ghost:hover { border-color: var(--accent); color: var(--accent); }
#send-twice {
  background: transparent; color: var(--accent);
  border: 1px solid var(--accent);
}
#send-twice:hover { background: var(--accent-bg); }

textarea:disabled { opacity: 0.5; }

/* ---------- run-locally callout (replay mode) ---------- */
.run-locally {
  margin-top: 4px;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-left: 2px solid var(--purple);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 12px;
}
.run-locally[hidden] { display: none; }
.run-locally .rl-head {
  color: var(--fg);
  font-size: 12px;
  margin-bottom: 8px;
}
.run-locally .rl-head b { color: var(--purple); font-weight: 600; }
.run-locally pre {
  margin: 0 0 10px;
  padding: 10px 12px;
  background: var(--bg-elev2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--mono); font-size: 12px;
  color: var(--accent);
  overflow-x: auto;
}
.run-locally .rl-foot { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.run-locally .rl-cta {
  margin-left: auto;
  color: var(--bg);
  background: var(--accent);
  padding: 6px 12px;
  border-radius: var(--radius);
  font-family: var(--mono); font-size: 12px; font-weight: 600;
  text-decoration: none;
}
.run-locally .rl-cta:hover { background: var(--accent-dim); }

.replay-controls { margin-left: auto; display: flex; gap: 6px; align-items: center; }
.replay-controls select {
  background: var(--bg); color: var(--fg);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 4px 8px;
  font-family: var(--mono); font-size: 12px;
}

/* ---------- layout ---------- */
main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas: "pool sched" "seqs seqs";
  gap: 16px;
  padding: 16px 24px;
}
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  position: relative;
}
.card::before {
  content: "";
  position: absolute;
  top: -1px; bottom: -1px; left: -1px;
  width: 2px;
  background: var(--accent);
  border-top-left-radius: var(--radius);
  border-bottom-left-radius: var(--radius);
  opacity: 0;
  transition: opacity 0.18s ease;
}
.card:hover::before { opacity: 1; }
.card h2 {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg);
}
.card h2 .muted { font-weight: 400; text-transform: none; letter-spacing: 0; }
.card h3 {
  font-family: var(--mono); font-size: 10px;
  margin: 14px 0 6px;
  color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.1em;
}
.card.grow { grid-area: seqs; }
.card:nth-of-type(1) { grid-area: pool; }
.card:nth-of-type(2) { grid-area: sched; }

/* ---------- block pool ---------- */
.block-pool {
  display: grid;
  grid-template-columns: repeat(auto-fill, 16px);
  gap: 3px;
  padding: 10px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  max-height: 320px; overflow-y: auto;
}
.block {
  width: 16px; height: 16px; border-radius: 2px;
  background: var(--bg-elev2);
  cursor: help;
  border: 1px solid transparent;
  transition: transform 0.1s ease;
}
.block:hover { transform: scale(1.25); z-index: 2; position: relative; }
.block.free { background: #1a2030; }
.block.cached { background: #2a3d2a; }
.block.used { background: var(--accent); }
.block.shared { background: var(--purple); }
.block.hashed { border-color: var(--accent); }

.legend { display: flex; gap: 14px; margin-top: 10px; font-family: var(--mono); font-size: 10px; color: var(--muted); flex-wrap: wrap; }
.legend-item { display: flex; align-items: center; gap: 5px; }
.swatch { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }
.swatch-free { background: #1a2030; }
.swatch-cached { background: #2a3d2a; }
.swatch-used { background: var(--accent); }
.swatch-shared { background: var(--purple); }
.swatch-hashed-edge { background: var(--bg-elev2); border: 1px solid var(--accent); }

/* ---------- stats ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.stat {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
}
.stat-label {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.stat-value {
  font-family: var(--mono);
  font-size: 20px;
  margin-top: 4px;
  color: var(--fg);
  font-weight: 500;
}

/* ---------- log ---------- */
.log {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  height: 160px; overflow-y: auto;
  font-family: var(--mono); font-size: 11px;
  margin: 0;
  white-space: pre-wrap; word-break: break-word;
  color: var(--muted);
}
.log .ev-step { color: var(--muted); }
.log .ev-admit { color: var(--accent); }
.log .ev-finish { color: var(--accent-dim); }
.log .ev-preempt { color: var(--orange); }

/* ---------- sequences ---------- */
#seqs { display: flex; flex-direction: column; gap: 10px; }
.seq {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
}
.seq-header { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.seq-id { font-family: var(--mono); color: var(--muted); font-size: 11px; }
.seq-status {
  font-family: var(--mono);
  font-size: 9px;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.08em;
  border: 1px solid;
}
.seq-status.waiting { color: var(--muted); border-color: var(--border-strong); }
.seq-status.prefilling { color: var(--accent); border-color: var(--accent); background: var(--accent-bg); }
.seq-status.running { color: var(--accent); border-color: var(--accent); }
.seq-status.finished { color: var(--purple); border-color: var(--purple); }
.seq-status.preempted { color: var(--orange); border-color: var(--orange); }
.seq-meta {
  color: var(--muted); font-size: 11px;
  font-family: var(--mono);
  margin-left: auto;
}
.seq-blocks {
  margin-top: 10px;
  display: flex; gap: 3px; flex-wrap: wrap;
}
.seq-block {
  width: 26px; height: 16px;
  background: var(--bg-elev2);
  font-family: var(--mono); font-size: 9px;
  line-height: 16px; text-align: center;
  border-radius: 2px;
  color: var(--muted);
  border: 1px solid var(--border);
}
.seq-block.cached-hit {
  background: rgba(198, 255, 62, 0.12);
  color: var(--accent);
  border-color: var(--accent);
}
.seq-block.shared {
  background: rgba(183, 140, 255, 0.18);
  color: var(--purple);
  border-color: var(--purple);
}
.seq-text {
  margin-top: 10px;
  font-family: var(--mono); font-size: 12px;
  background: var(--bg-elev2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  min-height: 28px;
  max-height: 200px;
  overflow-y: auto;
  white-space: pre-wrap; word-break: break-word;
  line-height: 1.55;
}
.seq-text .prompt { color: var(--muted); }
.seq-text .gen { color: var(--fg); }
.seq-text .cursor {
  display: inline-block; width: 7px; height: 14px;
  background: var(--accent);
  vertical-align: text-bottom;
  margin-left: 1px;
  animation: blink 1s steps(2, start) infinite;
}
@keyframes blink { to { opacity: 0; } }

footer {
  padding: 14px 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
}
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ---------- scrollbar ---------- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

@media (max-width: 900px) {
  main { grid-template-columns: 1fr; grid-template-areas: "pool" "sched" "seqs"; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .topbar { padding: 8px 16px; font-size: 11px; }
  header.hero, .prompt-box, main, footer { padding-left: 16px; padding-right: 16px; }
}