* {
  box-sizing: border-box;
}

:root {
  --bg: #000;
  --fg: #fff;
  --muted: #a8a8a8;
  --line: #fff;
  --soft: #141414;
  --softer: #202020;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.4 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

button,
input {
  font: inherit;
}

button {
  background: #fff;
  color: #000;
  border: 1px solid #fff;
  padding: 8px 10px;
  cursor: pointer;
}

button.active,
button:hover {
  background: #000;
  color: #fff;
}

input {
  width: 100%;
  background: #000;
  color: #fff;
  border: 1px solid #fff;
  padding: 10px;
  outline: none;
}

.os {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 220px 1fr 310px;
  grid-template-rows: 54px 1fr 82px;
  grid-template-areas:
    "topbar topbar topbar"
    "rail workspace right"
    "dock dock dock";
}

.topbar {
  grid-area: topbar;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
}

.product-rail {
  grid-area: rail;
  border-right: 1px solid var(--line);
  overflow: auto;
  padding: 12px;
}

.workspace {
  grid-area: workspace;
  overflow: auto;
  padding: 12px;
}

.right-panel {
  grid-area: right;
  border-left: 1px solid var(--line);
  overflow: auto;
  padding: 12px;
}

.dock {
  grid-area: dock;
  border-top: 1px solid var(--line);
  padding: 10px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: start;
  position: relative;
}

.panel {
  border: 1px solid var(--line);
  background: #050505;
  margin-bottom: 12px;
  padding: 12px;
}

.hero {
  display: grid;
  grid-template-columns: 1fr minmax(260px, 380px);
  gap: 12px;
}

h1 {
  font-size: clamp(36px, 6vw, 88px);
  line-height: 0.9;
  margin: 8px 0;
  letter-spacing: -0.08em;
}

.eyebrow,
.rail-title,
.panel-title,
.surface-title,
.prompt {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-size: 12px;
}

.muted {
  color: var(--muted);
}

.status-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.pill,
.badge {
  display: inline-block;
  border: 1px solid #fff;
  padding: 2px 6px;
  margin: 2px;
  font-size: 11px;
  text-transform: uppercase;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--line);
}

.mini-grid div {
  border: 1px solid var(--line);
  padding: 14px;
}

.mini-grid strong {
  display: block;
  font-size: 34px;
}

.mini-grid span {
  color: var(--muted);
  text-transform: uppercase;
  font-size: 11px;
}

.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 10px;
}

.card {
  border: 1px solid #fff;
  padding: 10px;
  background: #000;
  min-height: 110px;
}

.card h3 {
  margin: 0 0 8px;
}

.card .meta {
  color: var(--muted);
  font-size: 12px;
}

.rail-item {
  border: 1px solid #fff;
  padding: 7px;
  margin: 0 0 6px;
  cursor: pointer;
}

.rail-item:hover {
  background: #fff;
  color: #000;
}

.stack {
  display: grid;
  gap: 8px;
}

.receipt-card {
  border: 1px solid #fff;
  padding: 8px;
}

#suggestions {
  position: absolute;
  left: 78px;
  right: 70px;
  bottom: 80px;
  background: #000;
  border: 1px solid #fff;
  max-height: 300px;
  overflow: auto;
  display: none;
  z-index: 5;
}

.suggestion {
  padding: 8px;
  border-bottom: 1px solid #333;
  cursor: pointer;
}

.suggestion:hover {
  background: #fff;
  color: #000;
}

@media (max-width: 1050px) {
  .os {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto auto;
    grid-template-areas:
      "topbar"
      "rail"
      "workspace"
      "right"
      "dock";
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .dock {
    position: sticky;
    bottom: 0;
    background: #000;
  }
}