:root {
  color-scheme: light;
  --bg: #f4f7f8;
  --panel: #ffffff;
  --panel-soft: #eef4f5;
  --ink: #17202a;
  --muted: #5f6f75;
  --line: #ccd7db;
  --accent: #126782;
  --accent-strong: #0b4f63;
  --success: #1f7a4d;
  --warning: #8a5a00;
  --danger: #9d2f3a;
  --shadow: 0 18px 50px rgba(20, 35, 45, 0.09);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #11191c;
  --panel: #192428;
  --panel-soft: #223034;
  --ink: #edf4f5;
  --muted: #afbec3;
  --line: #34464c;
  --accent: #72c4dc;
  --accent-strong: #9dd5e5;
  --success: #7bd49f;
  --warning: #ffd27a;
  --danger: #ff9aa6;
  --shadow: none;
}

* { box-sizing: border-box; }

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

a { color: var(--accent-strong); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, main:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  left: 12px;
  top: -80px;
  z-index: 20;
  background: var(--panel);
  padding: 10px 14px;
  border: 1px solid var(--line);
}
.skip-link:focus { top: 12px; }

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-panel {
  width: min(100%, 440px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.eyebrow, .breadcrumbs {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1, h2, h3 { margin: 0; letter-spacing: 0; }
h1 { font-size: 1.7rem; line-height: 1.2; }
.auth-panel h1 { margin-bottom: 24px; font-size: 2rem; }
h2 { font-size: 1rem; margin-bottom: 12px; }

.stack { display: grid; gap: 16px; }
label { display: grid; gap: 6px; font-weight: 650; color: var(--ink); }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
}

button, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border: 0;
  border-radius: 6px;
  padding: 10px 14px;
  background: var(--accent-strong);
  color: #fff;
  font: inherit;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
}
.secondary, .secondary-link {
  background: transparent;
  color: var(--accent-strong);
  border: 1px solid var(--line);
  text-decoration: none;
}
.danger { background: var(--danger); }

.app-page {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 18px 14px;
}

.brand {
  display: grid;
  gap: 5px;
  padding: 8px 10px 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 12px;
}
.brand strong { font-size: 1rem; }
.brand span {
  width: fit-content;
  border: 1px solid var(--warning);
  color: var(--warning);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.72rem;
  font-weight: 800;
}

.sidebar nav { display: grid; gap: 4px; }
.sidebar a {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  color: var(--ink);
  text-decoration: none;
  border-radius: 6px;
}
.sidebar a.active, .sidebar a:hover { background: var(--panel-soft); }
.sidebar a span { color: var(--muted); font-size: 0.75rem; }

.app-shell { min-width: 0; }
.app-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 78px;
  padding: 14px 24px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.user-menu { display: flex; align-items: center; gap: 10px; }
main { padding: 24px; }

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}
.metric, .panel, .empty-state, .detail-card, .alert {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  box-shadow: var(--shadow);
}
.metric { display: grid; gap: 10px; min-height: 104px; }
.metric span, dt, .empty-note { color: var(--muted); }
.metric strong { font-size: 1.35rem; }

.panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 18px;
}
.panel-grid .panel:last-child { grid-column: 1 / -1; }
.activity-list, .search-results { margin: 0; padding-left: 18px; }
.activity-list li, .search-results li { margin: 8px 0; }
.activity-list span, .search-results span { color: var(--muted); margin-right: 8px; }
.compact { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 0; }
dl { margin: 0; }
.detail-card dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
dd { margin: 4px 0 0; }

.page-actions, .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 16px;
}
.filters, .record-form {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 12px;
  align-items: end;
  margin-bottom: 16px;
}
.record-form {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}
.wide { grid-column: 1 / -1; }
.record-form .actions { grid-column: 1 / -1; margin: 0; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
table { width: 100%; border-collapse: collapse; min-width: 680px; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-size: 0.82rem; text-transform: uppercase; }
tr:last-child td { border-bottom: 0; }

.alert.error { border-color: var(--danger); color: var(--danger); margin-bottom: 16px; }
.mobile-only { display: none; }

@media (max-width: 900px) {
  .app-page { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 10;
    width: min(82vw, 300px);
    transform: translateX(-105%);
    transition: transform 160ms ease;
  }
  .sidebar.open { transform: translateX(0); }
  .mobile-only { display: inline-flex; }
  .app-header { align-items: flex-start; padding: 12px 16px; }
  .user-menu { flex-wrap: wrap; justify-content: flex-end; }
  main { padding: 16px; }
  .metrics, .panel-grid, .filters, .record-form, .detail-card dl, .compact { grid-template-columns: 1fr; }
}