:root {
  --bg: #eef1f6;
  --panel: #ffffff;
  --ink: #152033;
  --muted: #6b7380;
  --line: #e2e6ee;
  --brand: #1a2b4c;
  --brand-2: #243a63;
  --accent: #2f6feb;
  --ok: #1f7a4c;
  --warn: #b26a00;
  --bad: #b42318;
  --soft: #f5f7fb;
  --radius: 12px;
  --shadow: 0 10px 30px rgba(21, 32, 51, 0.08);
  font-family: "Segoe UI", "PT Sans", system-ui, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: radial-gradient(1200px 600px at 10% -10%, #d9e4f7 0%, transparent 55%),
              radial-gradient(900px 500px at 100% 0%, #e7edf7 0%, transparent 50%),
              var(--bg);
  min-height: 100vh;
}

a { color: var(--accent); }
button, input, select, textarea { font: inherit; }

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px;
  box-shadow: var(--shadow);
}
.login-brand {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.4px;
  padding: 8px 12px;
  border-radius: 8px;
  margin-bottom: 16px;
}
.login-card h1 { margin: 0 0 8px; font-size: 1.35rem; }
.login-card label { display: block; margin: 14px 0; font-size: 0.92rem; }
.login-card input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
.sidebar {
  background: linear-gradient(180deg, var(--brand), var(--brand-2));
  color: #e8eef8;
  padding: 22px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar .brand {
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 4px;
}
.sidebar .sub { color: #a9b7d0; font-size: 0.85rem; margin-bottom: 24px; }
.nav-btn {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: inherit;
  padding: 11px 12px;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 4px;
}
.nav-btn:hover { background: rgba(255,255,255,0.08); }
.nav-btn.active { background: rgba(255,255,255,0.16); }
.sidebar-foot {
  margin-top: auto;
  position: absolute;
  bottom: 20px;
  left: 16px;
  right: 16px;
}
.main { padding: 24px 28px 48px; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}
.topbar h1 { margin: 0; font-size: 1.45rem; }
.muted { color: var(--muted); }
.error { color: var(--bad); margin-top: 10px; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.card .label { color: var(--muted); font-size: 0.85rem; }
.card .value { font-size: 1.6rem; font-weight: 700; margin-top: 6px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.panel-head {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--soft);
}
.panel-head h2 { margin: 0; font-size: 1.05rem; }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.toolbar input[type="search"],
.toolbar input[type="text"],
.toolbar input[type="date"],
.toolbar input[type="number"],
.toolbar select {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  min-width: 140px;
}

.btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}
.btn:hover { background: #f3f6fb; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.05); }
.btn.danger { background: #fff5f4; border-color: #f0c7c3; color: var(--bad); }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.table-wrap { overflow: auto; max-height: calc(100vh - 280px); }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
th, td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
th {
  position: sticky;
  top: 0;
  background: #f8fafc;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}
th .sort { color: var(--muted); font-size: 0.8em; margin-left: 4px; }
tr:hover td { background: #fafbfe; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.85em; }
.pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.78rem;
  background: #eef2f8;
}
.pill.ok { background: #e5f6ed; color: var(--ok); }
.pill.bad { background: #fdeceb; color: var(--bad); }
.pill.warn { background: #fff4df; color: var(--warn); }

.tabs { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; }
.tab {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
}
.tab.active { background: var(--brand); color: #fff; border-color: var(--brand); }

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 40, 0.45);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 40;
}
.modal {
  width: min(720px, 100%);
  max-height: 90vh;
  overflow: auto;
  background: #fff;
  border-radius: 14px;
  padding: 20px;
  box-shadow: var(--shadow);
}
.modal.wide { width: min(960px, 100%); }
.modal h3 { margin: 0 0 12px; }
.modal label { display: block; margin: 10px 0; font-size: 0.92rem; }
.modal input, .modal textarea, .modal select {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.preview-frame {
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 320px;
  width: 100%;
  background: #fff;
}

.hidden { display: none !important; }
.empty {
  padding: 36px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .sidebar-foot { position: static; margin-top: 20px; }
  .table-wrap { max-height: none; }
}