/* Agent Evidence Ledger — forensic instrument aesthetic.
   Deep slate "recorder" chassis, phosphor-cyan data, amber caution,
   signal-red tamper. Monospace for evidence, humanist sans for chrome. */

:root {
  --void: #0a0e14;          /* deepest background */
  --chassis: #111722;       /* panel surface */
  --chassis-2: #161d2b;     /* raised surface */
  --edge: #232c3d;          /* borders */
  --edge-bright: #2f3d55;
  --ink: #e6edf6;           /* primary text */
  --ink-dim: #8592a8;       /* secondary text */
  --ink-faint: #566074;     /* tertiary */

  --cyan: #35d0d6;          /* phosphor data / intact */
  --cyan-deep: #0e7c86;
  --amber: #e0a53b;         /* caution / escalate */
  --red: #ff4d5e;           /* tamper / block / breach */
  --green: #34d399;         /* allow */
  --violet: #8b7cf6;

  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --sans: "IBM Plex Sans", system-ui, sans-serif;

  --r: 10px;
  --r-sm: 6px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(53,208,214,0.06), transparent 60%),
    radial-gradient(900px 500px at 0% 110%, rgba(139,124,246,0.05), transparent 55%),
    var(--void);
  color: var(--ink);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* faint moving scanline for "recorder" ambiance */
.scanline {
  position: fixed; inset: 0; pointer-events: none; z-index: 1;
  background: linear-gradient(rgba(53,208,214,0.025) 1px, transparent 1px);
  background-size: 100% 3px;
  mix-blend-mode: overlay;
  opacity: 0.5;
}
@media (prefers-reduced-motion: no-preference) {
  .scanline::after {
    content: ""; position: absolute; left: 0; right: 0; height: 120px;
    background: linear-gradient(180deg, transparent, rgba(53,208,214,0.06), transparent);
    animation: sweep 7s linear infinite;
  }
  @keyframes sweep { 0% { top: -120px; } 100% { top: 100%; } }
}

/* ---------- header ---------- */
.top {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  padding: 22px clamp(16px, 4vw, 40px);
  border-bottom: 1px solid var(--edge);
  background: linear-gradient(180deg, rgba(17,23,34,0.9), rgba(10,14,20,0.6));
  backdrop-filter: blur(6px);
}
.brand { display: flex; align-items: center; gap: 18px; }
.rec {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-weight: 600; font-size: 0.82rem; letter-spacing: 0.18em;
  color: var(--red);
  border: 1px solid rgba(255,77,94,0.4); border-radius: 999px;
  padding: 7px 14px; background: rgba(255,77,94,0.06);
}
.rec-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--red);
  box-shadow: 0 0 10px var(--red); }
@media (prefers-reduced-motion: no-preference) {
  .rec-dot { animation: blink 1.4s steps(1) infinite; }
  @keyframes blink { 50% { opacity: 0.25; box-shadow: none; } }
}
.top h1 { font-size: 1.32rem; font-weight: 700; letter-spacing: -0.01em; }
.tag { font-size: 0.9rem; color: var(--ink-dim); }

.chainstate { display: flex; flex-direction: column; align-items: flex-end; gap: 5px; }
.chainstate-label { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.22em; color: var(--ink-faint); }
.chainstate-badge {
  font-family: var(--mono); font-weight: 600; font-size: 0.9rem;
  padding: 6px 14px; border-radius: var(--r-sm); letter-spacing: 0.04em;
  border: 1px solid var(--edge-bright);
}
.chainstate-badge.intact { color: var(--cyan); border-color: rgba(53,208,214,0.5);
  background: rgba(53,208,214,0.08); box-shadow: 0 0 20px rgba(53,208,214,0.15) inset; }
.chainstate-badge.broken { color: var(--red); border-color: rgba(255,77,94,0.6);
  background: rgba(255,77,94,0.1); box-shadow: 0 0 20px rgba(255,77,94,0.18) inset; }

/* ---------- layout ---------- */
.grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 22px; padding: 22px clamp(16px, 4vw, 40px) 40px;
  max-width: 1440px; margin: 0 auto; align-items: start;
}
.panel {
  background: linear-gradient(180deg, var(--chassis), var(--void));
  border: 1px solid var(--edge); border-radius: var(--r);
  padding: 22px;
}
.panel-chain { padding: 0; overflow: hidden; }
.panel-head { margin-bottom: 18px; }
.panel-head.tight { margin-top: 26px; }
.panel-head.sticky {
  position: sticky; top: 0; z-index: 3;
  padding: 20px 22px; margin: 0;
  background: linear-gradient(180deg, var(--chassis), rgba(17,23,34,0.92));
  border-bottom: 1px solid var(--edge); backdrop-filter: blur(4px);
}
.panel-head h2 { font-size: 1.05rem; font-weight: 600; letter-spacing: -0.01em; }
.panel-head p { font-size: 0.86rem; color: var(--ink-dim); margin-top: 5px; }
.count {
  font-family: var(--mono); font-size: 0.82rem; color: var(--cyan);
  border: 1px solid var(--edge-bright); border-radius: 999px; padding: 2px 10px; margin-left: 6px;
}

/* ---------- presets ---------- */
.preset-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.preset {
  font-family: var(--mono); font-size: 0.74rem; color: var(--ink-dim);
  background: var(--chassis-2); border: 1px solid var(--edge);
  border-radius: 999px; padding: 7px 13px; cursor: pointer;
  transition: border-color .12s, color .12s, transform .12s;
}
.preset:hover { color: var(--cyan); border-color: var(--cyan-deep); transform: translateY(-1px); }
.preset.breach:hover { color: var(--red); border-color: rgba(255,77,94,0.5); }

/* ---------- form ---------- */
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
.f { display: flex; flex-direction: column; gap: 6px; }
.f-wide { grid-column: 1 / -1; }
.f-check { grid-column: 1 / -1; }
.f label { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-faint); }
.f input, .f select {
  font-family: var(--mono); font-size: 0.86rem; color: var(--ink);
  background: var(--void); border: 1px solid var(--edge); border-radius: var(--r-sm);
  padding: 10px 12px; transition: border-color .12s, box-shadow .12s;
}
.f input:focus, .f select:focus {
  outline: none; border-color: var(--cyan-deep);
  box-shadow: 0 0 0 3px rgba(53,208,214,0.12);
}
.f input::placeholder { color: var(--ink-faint); }
.check { flex-direction: row; align-items: center; gap: 10px; cursor: pointer;
  font-family: var(--sans); font-size: 0.9rem; color: var(--ink-dim); text-transform: none; letter-spacing: 0; }
.check input { width: 17px; height: 17px; accent-color: var(--cyan); }

/* ---------- buttons ---------- */
.btn {
  font-family: var(--sans); font-size: 0.9rem; font-weight: 600;
  border: 1px solid transparent; border-radius: var(--r-sm);
  padding: 11px 18px; cursor: pointer; transition: transform .12s, filter .12s, background .12s;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { grid-column: 1 / -1; background: var(--cyan-deep); color: #eafcff;
  border-color: var(--cyan); box-shadow: 0 0 24px rgba(53,208,214,0.2); }
.btn-primary:hover { filter: brightness(1.12); }
.ops { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px;
  padding-top: 20px; border-top: 1px solid var(--edge); }
.btn-verify { background: transparent; color: var(--cyan); border-color: rgba(53,208,214,0.4); }
.btn-export { background: transparent; color: var(--violet); border-color: rgba(139,124,246,0.4); }
.btn-danger { background: transparent; color: var(--red); border-color: rgba(255,77,94,0.4); }
.btn-ghost { background: transparent; color: var(--ink-dim); border-color: var(--edge); }
.btn-verify:hover { background: rgba(53,208,214,0.08); }
.btn-export:hover { background: rgba(139,124,246,0.08); }
.btn-danger:hover { background: rgba(255,77,94,0.08); }
.btn-ghost:hover { background: rgba(255,255,255,0.03); }

/* ---------- query ---------- */
.query-controls { display: grid; grid-template-columns: 1fr auto auto; gap: 9px; }
.query-controls input, .query-controls select {
  font-family: var(--mono); font-size: 0.82rem; color: var(--ink);
  background: var(--void); border: 1px solid var(--edge); border-radius: var(--r-sm); padding: 9px 12px;
}
.query-controls input:focus, .query-controls select:focus {
  outline: none; border-color: var(--cyan-deep); box-shadow: 0 0 0 3px rgba(53,208,214,0.12);
}

/* ---------- the chain ---------- */
.chain { padding: 16px; display: flex; flex-direction: column; gap: 0;
  max-height: calc(100vh - 120px); overflow-y: auto; }

.block {
  position: relative;
  background: var(--chassis-2); border: 1px solid var(--edge);
  border-radius: var(--r-sm); padding: 14px 16px;
  transition: border-color .2s, background .2s, opacity .2s;
}
.block.hidden { display: none; }
/* connector link between blocks */
.link {
  width: 2px; height: 20px; margin-left: 26px;
  background: linear-gradient(180deg, var(--cyan-deep), rgba(53,208,214,0.15));
  position: relative;
}
.link::before {
  content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%);
  width: 7px; height: 7px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}
.link.void { background: linear-gradient(180deg, var(--red), rgba(255,77,94,0.15)); }
.link.void::before { background: var(--red); box-shadow: 0 0 8px var(--red); }

.block-top { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.seq { font-family: var(--mono); font-size: 0.74rem; font-weight: 600;
  color: var(--void); background: var(--cyan); border-radius: 4px; padding: 2px 8px; }
.block.tampered .seq, .block.downstream .seq { background: var(--red); color: #fff; }
.decision-chip {
  font-family: var(--mono); font-size: 0.68rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 3px 9px; border-radius: 4px;
}
.decision-chip.allow { color: var(--green); background: rgba(52,211,153,0.12); }
.decision-chip.block { color: var(--red); background: rgba(255,77,94,0.12); }
.decision-chip.escalate { color: var(--amber); background: rgba(224,165,59,0.14); }
.policy-flag { font-family: var(--mono); font-size: 0.68rem; padding: 3px 9px; border-radius: 4px;
  margin-left: auto; }
.policy-flag.match { color: var(--cyan); background: rgba(53,208,214,0.1); }
.policy-flag.breach { color: var(--red); background: rgba(255,77,94,0.12); }

.block-time { font-family: var(--mono); font-size: 0.72rem; color: var(--ink-faint); }
.block-action { font-size: 0.96rem; font-weight: 600; margin: 8px 0 4px; color: var(--ink); }
.block-meta { display: grid; grid-template-columns: auto 1fr; gap: 3px 12px;
  font-size: 0.82rem; margin-top: 8px; }
.block-meta dt { font-family: var(--mono); font-size: 0.68rem; color: var(--ink-faint);
  text-transform: uppercase; letter-spacing: 0.08em; padding-top: 2px; }
.block-meta dd { color: var(--ink-dim); }

.hashline { display: flex; align-items: center; gap: 8px; margin-top: 12px;
  padding-top: 10px; border-top: 1px dashed var(--edge); }
.hashline .h-label { font-family: var(--mono); font-size: 0.64rem; color: var(--ink-faint);
  text-transform: uppercase; letter-spacing: 0.1em; }
.hashline .h-val { font-family: var(--mono); font-size: 0.72rem; color: var(--cyan);
  word-break: break-all; }
.block.tampered .h-val, .block.downstream .h-val { color: var(--red); }

.block.tampered {
  border-color: var(--red); background: rgba(255,77,94,0.06);
  box-shadow: 0 0 0 1px rgba(255,77,94,0.3), 0 0 30px rgba(255,77,94,0.08) inset;
}
.block.downstream { border-color: rgba(255,77,94,0.4); background: rgba(255,77,94,0.03); }
.tamper-note { font-family: var(--mono); font-size: 0.72rem; color: var(--red);
  margin-top: 8px; display: flex; align-items: center; gap: 6px; }

/* ---------- footer + toast ---------- */
.foot { position: relative; z-index: 2; text-align: center;
  padding: 26px 20px 34px; border-top: 1px solid var(--edge); color: var(--ink-dim); font-size: 0.84rem; }
.foot-note { color: var(--ink-faint); font-size: 0.78rem; margin-top: 6px; }

.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%) translateY(30px);
  z-index: 20; font-family: var(--mono); font-size: 0.84rem;
  background: var(--chassis-2); color: var(--ink); border: 1px solid var(--edge-bright);
  border-radius: var(--r-sm); padding: 12px 20px; box-shadow: 0 12px 40px rgba(0,0,0,0.5);
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.ok { border-color: var(--cyan-deep); color: var(--cyan); }
.toast.warn { border-color: rgba(255,77,94,0.5); color: var(--red); }

/* ---------- responsive ---------- */
@media (max-width: 940px) {
  .grid { grid-template-columns: 1fr; }
  .chain { max-height: none; }
  .panel-head.sticky { position: static; }
}
@media (max-width: 520px) {
  .form { grid-template-columns: 1fr; }
  .query-controls { grid-template-columns: 1fr; }
  .top { flex-direction: column; align-items: flex-start; }
  .chainstate { align-items: flex-start; }
}