:root {
  --ink: #1b1b3a;
  --paper: #fbfefb;
  --coral: #ff6b6b;
  --opal: #4ecdc4;
  --mist: #dff7f4;
  --line: rgba(27, 27, 58, 0.14);
  --muted: rgba(27, 27, 58, 0.62);
  --shadow: 0 18px 48px rgba(27, 27, 58, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

.app-shell {
  display: grid;
  grid-template-columns: 292px minmax(0, 1fr);
  min-height: 100vh;
}

.rail {
  position: sticky;
  top: 0;
  height: 100vh;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 24px;
  padding: 22px;
  background: var(--ink);
  color: var(--paper);
}

.brand {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  align-items: center;
  color: inherit;
  text-decoration: none;
}

.brand strong {
  display: block;
  font-size: 22px;
  line-height: 1;
}

.brand small,
.source-box span,
.metric small,
.section-head p,
.route-card span,
.driver span,
.driver small,
.document-row small,
.finance-row small {
  color: var(--muted);
}

.rail .brand small,
.rail label,
.rail .source-box span {
  color: rgba(251, 254, 251, 0.66);
}

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

.tab,
.icon-button,
.primary-button {
  min-height: 42px;
  border: 0;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.tab {
  text-align: left;
  padding: 11px 12px;
  border-left: 3px solid transparent;
  background: transparent;
  color: rgba(251, 254, 251, 0.74);
}

.tab:hover,
.tab.is-active {
  border-left-color: var(--opal);
  background: rgba(251, 254, 251, 0.08);
  color: var(--paper);
}

.filters {
  display: grid;
  align-content: start;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  font-size: 13px;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 11px 12px;
  background: #fff;
  color: var(--ink);
}

.rail input,
.rail select {
  border-color: rgba(251, 254, 251, 0.16);
  background: rgba(251, 254, 251, 0.08);
  color: var(--paper);
}

.rail option {
  color: var(--ink);
}

.source-box {
  padding-top: 16px;
  border-top: 1px solid rgba(251, 254, 251, 0.16);
}

.mono,
.eyebrow {
  margin: 0;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.workspace {
  min-width: 0;
  padding: 24px;
}

.topbar,
.section-head,
.lane-top,
.route-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar {
  min-height: 70px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  margin-top: 4px;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1;
}

h2 {
  font-size: 18px;
  line-height: 1.15;
}

.eyebrow {
  color: var(--coral);
}

.icon-button {
  width: 44px;
  border-radius: 7px;
  background: var(--ink);
  color: var(--paper);
  font-size: 22px;
}

.icon-button:hover,
.primary-button:hover,
.route-card:hover {
  transform: translateY(-1px);
}

.primary-button {
  border-radius: 7px;
  padding: 0 16px;
  background: var(--coral);
  color: var(--ink);
  font-weight: 800;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

.metric {
  display: grid;
  gap: 7px;
  min-width: 0;
  padding: 18px;
  border-right: 1px solid var(--line);
}

.metric:last-child {
  border-right: 0;
}

.metric strong {
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
}

.metric-opal {
  background: var(--mist);
}

.metric-coral {
  background: rgba(255, 107, 107, 0.16);
}

.view {
  display: none;
  margin-top: 22px;
}

.view.is-visible {
  display: block;
}

.lane-panel,
.work-surface {
  border-bottom: 1px solid var(--line);
  padding-bottom: 22px;
}

.lane-board {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.lane,
.route-card,
.inspector,
.document-row,
.finance-row,
.driver {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.lane {
  padding: 16px;
}

.lane-top strong {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 7px;
  background: var(--ink);
  color: var(--paper);
}

.progress,
.capacity {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(27, 27, 58, 0.09);
}

.progress span,
.capacity span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--opal), var(--coral));
  transition: width 260ms ease;
}

.compact {
  height: 6px;
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 18px;
  align-items: start;
  margin-top: 22px;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.route-card {
  display: grid;
  gap: 10px;
  min-height: 190px;
  padding: 16px;
  text-align: left;
  color: var(--ink);
}

.route-card.is-selected {
  border-color: var(--opal);
  box-shadow: 0 0 0 3px rgba(78, 205, 196, 0.22);
}

.route-card strong {
  font-size: 18px;
  line-height: 1.18;
}

.route-kicker {
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.risk {
  justify-self: start;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 12px;
  font-style: normal;
  font-weight: 800;
}

.risk-high {
  background: rgba(255, 107, 107, 0.2);
  color: #8c2323;
}

.risk-watch {
  background: rgba(27, 27, 58, 0.08);
}

.risk-clear {
  background: var(--mist);
  color: #12645e;
}

.inspector {
  position: sticky;
  top: 24px;
  display: grid;
  gap: 14px;
  padding: 20px;
}

.inspector p {
  color: var(--muted);
  line-height: 1.45;
}

dl {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 10px 14px;
  margin: 0;
}

dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

dd {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
}

.request-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  max-width: 900px;
  margin-top: 18px;
}

.request-form .primary-button,
.form-status {
  align-self: end;
}

.form-status {
  color: var(--muted);
  font-weight: 700;
}

.document-list,
.finance-grid,
.driver-strip {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.document-row {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) 110px 130px;
  gap: 14px;
  align-items: center;
  padding: 14px;
}

.doc-type,
.doc-status {
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.doc-type {
  color: var(--coral);
}

.doc-status {
  color: var(--opal);
}

.finance-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.finance-row,
.driver {
  display: grid;
  gap: 10px;
  padding: 16px;
}

.finance-row strong {
  font-size: 24px;
}

.driver-strip {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 1060px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .rail {
    position: static;
    height: auto;
    grid-template-rows: none;
  }

  .tabs,
  .filters {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .inspector {
    position: static;
  }
}

@media (max-width: 760px) {
  .workspace,
  .rail {
    padding: 16px;
  }

  .tabs,
  .filters,
  .metric-strip,
  .lane-board,
  .portfolio-grid,
  .request-form,
  .finance-grid,
  .driver-strip {
    grid-template-columns: 1fr;
  }

  .metric {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .metric:last-child {
    border-bottom: 0;
  }

  .topbar {
    align-items: flex-start;
  }

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

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