app/ui/frontend/src/styles/theme.css

@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600&family=Space+Grotesk:wght@500;700&display=swap");

:root {
  --bg: #eef2f4;
  --surface: #f7fafc;
  --ink: #101a25;
  --muted: #5c6b79;
  --accent: #0b7a68;
  --line: #d5dce3;
  --critical: #bf2d3f;
}

* {
  box-sizing: border-box;
}

html,
body,
#root {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at 0% 0%, #ffffff 0%, transparent 50%),
    radial-gradient(circle at 100% 20%, #e7f5f1 0%, transparent 45%),
    var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
}

.app-shell {
  display: grid;
  grid-template-columns: 250px 1fr;
  min-height: 100vh;
}

.sidebar {
  border-right: 1px solid var(--line);
  padding: 18px 14px;
  background: linear-gradient(180deg, #f8fbfd, #eef2f5);
}

.brand {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar button {
  text-align: left;
  border: none;
  background: transparent;
  padding: 8px 10px;
  color: var(--muted);
  border-left: 2px solid transparent;
  cursor: pointer;
}

.sidebar button.active {
  color: var(--ink);
  border-left-color: var(--accent);
  background: #e8f2ec;
}

.workspace {
  padding: 24px;
}

.page h1 {
  margin: 0 0 8px;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.4rem, 1.8vw, 2rem);
}

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

.hero-line {
  height: 6px;
  max-width: 360px;
  margin: 14px 0;
  background: linear-gradient(90deg, var(--accent), #8ec7a8);
}

.actions {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.page {
  animation: reveal 320ms ease-out;
}

button {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 8px 12px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 8px;
  transition: background 120ms ease, transform 120ms ease;
}

button:hover {
  background: #edf3f8;
  transform: translateY(-1px);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  gap: 12px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 12px;
  border-radius: 14px;
  box-shadow: 0 10px 24px -20px rgba(16, 26, 37, 0.45);
}

.panel h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #2b3f36;
}

pre {
  margin: 0;
  overflow: auto;
  font-size: 0.78rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 4px 6px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 0.82rem;
}

.list {
  margin: 0;
  padding-left: 16px;
}

.kpi {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.6rem;
  margin: 0;
}

.grid-mini {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}

.grid-mini p {
  margin: 2px 0 0;
  font-weight: 700;
}

.workbench-page {
  max-width: 1480px;
}

.workbench-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.workbench-header p {
  margin: 0;
}

.range-chip,
.status-chip,
.panel-heading span {
  border: 1px solid var(--line);
  background: #edf6f3;
  color: #24564d;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}

.control-strip {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 140px minmax(240px, 1.2fr) auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.field span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

select,
input {
  min-height: 38px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  padding: 8px 10px;
  font: inherit;
}

select:focus,
input:focus,
button:focus {
  outline: 2px solid rgba(11, 122, 104, 0.24);
  outline-offset: 1px;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

button.secondary {
  color: #24564d;
  background: #eef7f4;
}

.workbench-grid {
  display: grid;
  grid-template-columns: minmax(300px, 1.1fr) minmax(300px, 0.9fr);
  gap: 12px;
  align-items: start;
}

.panel-wide {
  grid-column: 1 / -1;
}

.panel-tall {
  min-height: 310px;
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.panel-heading h3 {
  margin-bottom: 0;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(110px, 1fr));
  gap: 8px;
}

.kpi-grid div,
.selected-action div {
  min-height: 68px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 10px;
}

.kpi-grid span,
.selected-action span {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.kpi-grid strong,
.selected-action strong {
  display: block;
  margin-top: 6px;
  overflow-wrap: anywhere;
}

.candidate-list,
.history-list,
.event-log {
  display: flex;
  flex-direction: column;
  gap: 7px;
  max-height: 264px;
  overflow: auto;
}

.candidate-row {
  display: grid;
  grid-template-columns: minmax(130px, 1fr) minmax(90px, 0.8fr) 64px;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 52px;
  text-align: left;
  background: #fff;
}

.candidate-row span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.candidate-row strong {
  display: block;
  color: #24564d;
}

.candidate-row.selected {
  border-color: var(--accent);
  background: #edf8f5;
  box-shadow: inset 3px 0 0 var(--accent);
}

.selected-action {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}

.action-console .field {
  margin-bottom: 8px;
}

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

.reward-panel {
  overflow: hidden;
}

.reward-bars {
  display: flex;
  flex-direction: column;
  gap: 7px;
  max-height: 264px;
  overflow: auto;
}

.reward-row {
  display: grid;
  grid-template-columns: minmax(150px, 0.8fr) minmax(120px, 1fr) 56px;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
}

.reward-row span {
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reward-row strong {
  text-align: right;
  font-family: "Space Grotesk", sans-serif;
}

.reward-track {
  height: 7px;
  border-radius: 999px;
  background: #dfe7ed;
  overflow: hidden;
}

.reward-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), #4f9f8d);
  transition: width 260ms ease;
}

.history-item,
.event-log div {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 9px 10px;
  font-size: 0.82rem;
}

.history-item strong {
  display: block;
  margin-bottom: 4px;
}

.history-item span {
  color: var(--muted);
}

.event-log {
  max-height: 170px;
}

.error-banner {
  margin-bottom: 12px;
  border: 1px solid rgba(191, 45, 63, 0.35);
  border-radius: 8px;
  background: #fff1f3;
  color: var(--critical);
  padding: 10px 12px;
  font-weight: 700;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

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

  .workbench-header,
  .button-row {
    align-items: stretch;
    flex-direction: column;
  }

  .control-strip,
  .workbench-grid,
  .kpi-grid,
  .selected-action {
    grid-template-columns: 1fr;
  }

  .range-chip {
    align-self: flex-start;
  }
}