/* FlashPoint browser demo.
 *
 * A trading-terminal palette without pretending to be one: dark, dense, and
 * monospaced where numbers need to line up. Prices and quantities use tabular
 * figures so columns stay aligned as values change.
 */

:root {
  --bg: #0d1117;
  --bg-raised: #151b23;
  --bg-sunken: #010409;
  --border: #2a313c;
  --text: #e6edf3;
  --text-dim: #9198a1;
  --text-faint: #6b7280;
  --bid: #3fb950;
  --bid-bar: #23863633;
  --ask: #f85149;
  --ask-bar: #da363333;
  --accent: #58a6ff;
  --warn: #d29922;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.55;
}

/* --- masthead ---------------------------------------------------------- */

.masthead {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #161b22 0%, var(--bg) 100%);
}

.masthead-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.2rem 1.5rem 1.8rem;
}

h1 {
  margin: 0 0 0.4rem;
  font-size: 1.9rem;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0 0 0.7rem;
  max-width: 62ch;
  color: var(--text-dim);
}

.links {
  margin: 0;
  font-size: 0.9rem;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.dot {
  color: var(--text-faint);
  margin: 0 0.5rem;
}

.muted {
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 0.85rem;
}

/* --- layout ------------------------------------------------------------ */

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.5rem;
}

.tabs {
  display: flex;
  gap: 0.4rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.4rem;
}

.tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-dim);
  font: inherit;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
}

.tab:hover {
  color: var(--text);
}

.tab.is-active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.panel.is-hidden {
  display: none;
}

.controls {
  margin-bottom: 1.1rem;
}

.hint {
  margin: 0 0 0.9rem;
  color: var(--text-dim);
  font-size: 0.9rem;
  max-width: 78ch;
}

code {
  font-family: var(--mono);
  background: var(--bg-raised);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85em;
}

.button-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.field-row {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 0.9rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.82rem;
  color: var(--text-dim);
}

input[type="number"] {
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.9rem;
  padding: 0.4rem 0.6rem;
  width: 11rem;
}

input:focus,
textarea:focus,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

button {
  border-radius: 6px;
  font: inherit;
  font-size: 0.9rem;
  padding: 0.45rem 1rem;
  cursor: pointer;
  border: 1px solid var(--border);
}

button.primary {
  background: #238636;
  border-color: #2ea043;
  color: #fff;
}

button.primary:hover:not(:disabled) {
  background: #2ea043;
}

button.secondary {
  background: var(--bg-raised);
  color: var(--text);
}

button.secondary:hover:not(:disabled) {
  border-color: var(--text-faint);
}

button:disabled {
  opacity: 0.55;
  cursor: default;
}

.status {
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 0.82rem;
}

.syntax {
  margin-top: 0.8rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.syntax summary {
  cursor: pointer;
}

.syntax pre {
  font-family: var(--mono);
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.7rem 0.9rem;
  overflow-x: auto;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 22rem) minmax(0, 1fr);
  gap: 1.1rem;
  align-items: start;
}

@media (max-width: 900px) {
  .split {
    grid-template-columns: 1fr;
  }
}

.script {
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.83rem;
  line-height: 1.5;
  min-height: 30rem;
  padding: 0.9rem;
  resize: vertical;
  width: 100%;
}

.output {
  min-height: 8rem;
  min-width: 0;
}

/* --- rendered results -------------------------------------------------- */

.step-heading {
  margin: 1.6rem 0 0.7rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.step-heading:first-child {
  margin-top: 0;
}

.events {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 0.9rem;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.event {
  display: grid;
  grid-template-columns: 3.6rem 6.2rem minmax(0, 1fr);
  gap: 0.6rem;
  padding: 0.3rem 0.8rem;
  border-bottom: 1px solid #1c222b;
  font-variant-numeric: tabular-nums;
}

.event:last-child {
  border-bottom: none;
}

.event .seq {
  color: var(--text-faint);
}

.event .kind {
  font-weight: 600;
}

.event.accepted .kind {
  color: var(--accent);
}
.event.trade {
  background: #1a2430;
}
.event.trade .kind {
  color: var(--warn);
}
.event.cancelled .kind {
  color: var(--text-dim);
}
.event.modified .kind {
  color: #a371f7;
}
.event.rejected {
  background: #2d1618;
}
.event.rejected .kind {
  color: var(--ask);
}

.event .detail {
  color: var(--text);
  overflow-wrap: anywhere;
}

.error-line {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--warn);
  background: #241c0d;
  border: 1px solid #3d2f10;
  border-radius: 6px;
  padding: 0.4rem 0.8rem;
  margin-bottom: 0.7rem;
}

/* --- book ladder ------------------------------------------------------- */

.ladder {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1.1rem;
  background: var(--bg-raised);
}

/* Six columns: depth bar, size, price | price, size, depth bar.
 * Head and rows share the definition so the labels sit over their numbers. */
.ladder-head,
.ladder-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 5.5rem 5.5rem 5.5rem 5.5rem minmax(0, 1fr);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}

.ladder-head {
  color: var(--text-faint);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.45rem 0.8rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-sunken);
}

/* Bid columns are right-aligned toward the spread; ask columns left-aligned
 * away from it, so the two sides mirror around the middle. */
.ladder-head span:nth-child(2),
.ladder-head span:nth-child(3) {
  text-align: right;
  padding-right: 0.7rem;
}

.ladder-head span:nth-child(4),
.ladder-head span:nth-child(5) {
  text-align: left;
  padding-left: 0.7rem;
}

.ladder-row {
  padding: 0.18rem 0.8rem;
  align-items: center;
}

.ladder-row .qty {
  text-align: right;
  padding-right: 0.7rem;
  color: var(--text-dim);
}

.ladder-row .price {
  text-align: right;
  padding-right: 0.7rem;
  font-weight: 600;
}

.ladder-row .price.bid {
  color: var(--bid);
}
.ladder-row .price.ask {
  color: var(--ask);
  text-align: left;
  padding-right: 0;
  padding-left: 0.7rem;
}
.ladder-row .qty.ask-qty {
  text-align: left;
  padding-right: 0;
  padding-left: 0.7rem;
}

/* Depth bars grow inward from the outer edges toward the spread. */
.depth {
  height: 1rem;
  border-radius: 2px;
}

.depth.bid-bar {
  background: var(--bid-bar);
  border-right: 2px solid var(--bid);
  margin-left: auto;
}

.depth.ask-bar {
  background: var(--ask-bar);
  border-left: 2px solid var(--ask);
  margin-right: auto;
}

.ladder-foot {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
  padding: 0.5rem 0.8rem;
  border-top: 1px solid var(--border);
  background: var(--bg-sunken);
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

.ladder-foot b {
  color: var(--text);
  font-weight: 600;
}

.ladder-empty {
  padding: 1.2rem 0.8rem;
  text-align: center;
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 0.82rem;
}

/* --- statistics -------------------------------------------------------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: 0.7rem;
  margin-bottom: 1.2rem;
}

.stat {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 0.9rem;
}

.stat .label {
  color: var(--text-faint);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.stat .value {
  font-family: var(--mono);
  font-size: 1.15rem;
  font-variant-numeric: tabular-nums;
  margin-top: 0.15rem;
}

table.chunks {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  margin-bottom: 1.2rem;
}

table.chunks th {
  text-align: right;
  color: var(--text-faint);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 0.4rem 0.7rem;
  border-bottom: 1px solid var(--border);
}

table.chunks td {
  text-align: right;
  padding: 0.28rem 0.7rem;
  border-bottom: 1px solid #1c222b;
}

table.chunks tr:last-child td {
  border-bottom: none;
}

.section-title {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 0.5rem;
}

.note {
  color: var(--text-dim);
  font-size: 0.85rem;
  max-width: 78ch;
  margin: 0 0 1.1rem;
}

footer {
  border-top: 1px solid var(--border);
  margin-top: 2.5rem;
}

footer p {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.3rem 1.5rem 2.2rem;
  color: var(--text-faint);
  font-size: 0.85rem;
}