:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-strong: #eef3f8;
  --text: #182230;
  --muted: #64748b;
  --line: #d8e0ea;
  --primary: #1463ff;
  --primary-dark: #0b49c8;
  --success: #0f8a5f;
  --warning: #b86b00;
  --danger: #bf2c34;
  --shadow: 0 14px 40px rgba(18, 32, 51, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  min-height: 38px;
  padding: 0 14px;
  cursor: pointer;
}

button:hover {
  background: var(--primary-dark);
}

.secondary,
.ghost {
  background: var(--surface-strong);
  color: var(--text);
}

.secondary:hover,
.ghost:hover {
  background: #dfe8f2;
}

button.danger {
  background: var(--danger);
}

button.danger:hover {
  background: #981b22;
}

button.small {
  min-height: 32px;
  padding: 0 10px;
}

.icon-button {
  width: 42px;
  height: 42px;
  padding: 0;
  font-size: 22px;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px;
  background: #101827;
  color: #e8eef7;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: #2dd4bf;
  color: #0f172a;
  font-weight: 800;
}

.brand small,
.policy-note span {
  display: block;
  color: #a8b3c4;
}

nav {
  display: grid;
  gap: 6px;
}

nav a {
  color: #cbd5e1;
  text-decoration: none;
  padding: 11px 12px;
  border-radius: 6px;
}

nav a:hover,
nav a.active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.policy-note {
  margin-top: auto;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  line-height: 1.45;
}

main {
  min-width: 0;
  padding: 30px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 30px;
  line-height: 1.15;
  letter-spacing: 0;
}

h2 {
  font-size: 18px;
  letter-spacing: 0;
}

.eyebrow {
  color: var(--muted);
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 5px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.metric,
.panel,
.item-card,
.task-card,
.session-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.metric {
  padding: 16px;
  min-height: 104px;
  display: grid;
  align-content: space-between;
}

.metric strong {
  font-size: 28px;
}

.metric span {
  color: var(--muted);
  line-height: 1.35;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(340px, 0.65fr);
  gap: 20px;
  margin-bottom: 20px;
}

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

.panel {
  padding: 18px;
  min-width: 0;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}

th,
td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  background: var(--surface-strong);
  color: var(--text);
  white-space: nowrap;
}

.badge.success {
  background: #dcfce7;
  color: var(--success);
}

.badge.warning {
  background: #fff0cf;
  color: var(--warning);
}

.badge.danger {
  background: #ffe1e5;
  color: var(--danger);
}

.stack,
.card-grid,
.task-list,
.session-grid {
  display: grid;
  gap: 12px;
}

.item-card,
.task-card,
.session-card,
.recommendation {
  padding: 14px;
}

.item-card,
.session-card {
  display: grid;
  gap: 10px;
}

.item-card header,
.task-card header,
.session-card header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.session-grid {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

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

.button-link {
  align-items: center;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  min-height: 38px;
  padding: 0 14px;
  text-decoration: none;
}

.button-link.secondary {
  background: var(--surface-strong);
  color: var(--text);
}

.meta-row {
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

.asset-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.asset-row span {
  background: var(--surface-strong);
  border-radius: 6px;
  padding: 8px;
  text-align: center;
}

.task-card {
  display: grid;
  gap: 12px;
}

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

.checklist label,
.check {
  display: flex;
  align-items: flex-start;
  gap: 9px;
}

.recommendation {
  border-left: 4px solid var(--primary);
  background: #f8fbff;
  border-radius: 6px;
}

.recommendation.high {
  border-left-color: var(--danger);
}

.recommendation.medium {
  border-left-color: var(--warning);
}

dialog {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0;
  width: min(620px, calc(100vw - 30px));
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgba(15, 23, 42, 0.45);
}

dialog form {
  padding: 18px;
  display: grid;
  gap: 14px;
}

dialog header,
dialog footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-weight: 650;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 11px;
  color: var(--text);
  background: #fff;
}

input[type="checkbox"] {
  width: auto;
  margin-top: 3px;
}

.split-inputs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

@media (max-width: 1100px) {
  body {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .metrics-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 680px) {
  main {
    padding: 18px;
  }

  .topbar,
  .panel-header {
    align-items: flex-start;
    flex-direction: column;
  }

  h1 {
    font-size: 24px;
  }

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