:root {
  --primary: #0a1628;
  --primary-light: #162544;
  --accent: #b8860b;
  --accent-light: #d4a843;
  --accent-glow: rgba(184, 134, 11, 0.15);
  --white: #ffffff;
  --off-white: #f8f9fc;
  --gray-100: #f1f3f8;
  --gray-200: #e2e6ef;
  --gray-400: #9ca3b8;
  --gray-600: #6b7280;
  --gray-800: #1f2937;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  --shadow: 0 4px 24px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 12px 48px rgba(10, 22, 40, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, sans-serif;
  background: var(--gray-100);
  color: var(--gray-800);
}

a {
  color: inherit;
  text-decoration: none;
}

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.72);
  padding: 24px 0;
}

.brand {
  padding: 0 24px 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-logo {
  color: var(--white);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.brand-logo span,
.brand-role {
  color: var(--accent-light);
}

.brand-role {
  margin-top: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.nav-section {
  padding: 24px 24px 0;
}

.nav-title {
  margin-bottom: 12px;
  color: var(--gray-400);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 -24px;
  padding: 11px 24px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.92);
}

.nav-item.active {
  border-right: 3px solid var(--accent-light);
  background: rgba(184, 134, 11, 0.12);
  color: var(--accent-light);
}

.main {
  padding: 32px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 28px;
}

.topbar h1 {
  margin: 0 0 6px;
  color: var(--primary);
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.7px;
}

.subtext {
  color: var(--gray-600);
  font-size: 14px;
  line-height: 1.5;
}

.btn-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 10px;
  padding: 10px 18px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--accent-light);
}

.btn-secondary {
  background: var(--white);
  color: var(--primary);
  border: 1.5px solid var(--gray-200);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.stat-card,
.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.stat-card {
  padding: 22px;
}

.stat-label {
  margin-bottom: 10px;
  color: var(--gray-400);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.stat-value {
  color: var(--primary);
  font-size: 30px;
  font-weight: 800;
}

.stat-meta {
  margin-top: 10px;
  color: var(--gray-600);
  font-size: 12px;
}

.card {
  overflow: hidden;
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-100);
}

.card-header h2,
.card-header h3 {
  margin: 0;
  color: var(--primary);
  font-size: 17px;
  font-weight: 700;
}

.card-body {
  padding: 24px;
}

.toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.toolbar input,
.toolbar select,
.toolbar textarea {
  min-width: 180px;
  padding: 11px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: 10px;
  background: var(--off-white);
  color: var(--gray-800);
  font: inherit;
}

.toolbar textarea {
  min-height: 120px;
  resize: vertical;
}

.table-wrap {
  overflow-x: auto;
}

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

th {
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-200);
  color: var(--gray-400);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-align: left;
  text-transform: uppercase;
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--gray-100);
  font-size: 14px;
  vertical-align: top;
}

tr:hover td {
  background: var(--off-white);
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-approved,
.badge-confirmed,
.badge-verified,
.badge-active,
.badge-paid {
  background: #ecfdf5;
  color: #059669;
}

.badge-pending,
.badge-open,
.badge-update_requested,
.badge-sent {
  background: #eff6ff;
  color: #2563eb;
}

.badge-expiring,
.badge-draft,
.badge-matched {
  background: #fff7ed;
  color: #d97706;
}

.badge-rejected,
.badge-cancelled,
.badge-overdue {
  background: #fef2f2;
  color: #dc2626;
}

.split-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

.callout {
  padding: 18px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(10, 22, 40, 0.98), rgba(22, 37, 68, 0.96));
  color: var(--white);
}

.callout h3 {
  margin: 0 0 10px;
  color: var(--accent-light);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.callout p,
.callout li {
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  line-height: 1.6;
}

.list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 18px;
}

.empty {
  padding: 28px;
  color: var(--gray-600);
  text-align: center;
}

.muted {
  color: var(--gray-400);
  font-size: 12px;
}

@media (max-width: 1100px) {
  .stats-grid,
  .split-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 800px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

  .main {
    padding: 18px;
  }

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