:root {
  --c-bg: #FFFFFF;
  --c-surface: #FAFBFC;
  --c-text: #0B1220;
  --c-text-muted: #7F8FA1;
  --c-border: #EBEFF4;
  --c-accent: #2563EB;
  --c-accent-soft: #EFF4FE;
  --c-success: #2E7D5B;
  --c-danger: #B03D3D;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(11,18,32,0.04);
  --font: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--c-bg); color: var(--c-text);
  font-family: var(--font); font-size: 13px; line-height: 1.5; }

.app { display: grid; grid-template-columns: 58px 1fr; grid-template-rows: 56px 1fr;
  grid-template-areas: "rail header" "rail main"; min-height: 100vh; }
.header { grid-area: header; display: flex; align-items: center; padding: 0 20px;
  border-bottom: 1px solid var(--c-border); background: var(--c-bg); }
.rail { grid-area: rail; background: var(--c-surface); border-right: 1px solid var(--c-border);
  display: flex; flex-direction: column; align-items: center; padding: 12px 0; gap: 8px; }
.rail a { color: var(--c-text-muted); text-decoration: none; padding: 8px;
  border-radius: var(--radius); display: flex; align-items: center; justify-content: center; }
.rail a.active, .rail a:hover { background: var(--c-accent-soft); color: var(--c-accent); }
.rail img { width: 24px; height: 24px; }

.main { grid-area: main; padding: 24px 32px; }
.container { max-width: 1080px; margin: 0 auto; }

.header .logo { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--c-text); }
.header .logo img { width: 24px; height: 24px; }
.header .spacer { flex: 1; }
.header .user { color: var(--c-text-muted); font-size: 12px; margin-right: 12px; }

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 18px; margin: 20px 0 10px; }

.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px;
  border-radius: var(--radius); border: 1px solid var(--c-border); background: var(--c-bg);
  color: var(--c-text); font-size: 13px; cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--c-surface); }
.btn-primary { background: var(--c-accent); color: #fff; border-color: var(--c-accent); }
.btn-primary:hover { background: #1d4fd6; }
.btn-danger { background: var(--c-danger); color: #fff; border-color: var(--c-danger); }
.btn-danger:hover { background: #8A2E2E; border-color: #8A2E2E; color: #fff; }

.card { background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px 24px; margin-bottom: 16px; }

table.data { width: 100%; border-collapse: collapse; background: var(--c-bg);
  border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden; }
table.data th, table.data td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--c-border); }
table.data th { background: var(--c-surface); font-weight: 600; font-size: 12px; color: var(--c-text-muted); }
table.data tr:last-child td { border-bottom: none; }
table.data tr:hover { background: var(--c-surface); }

form p { margin: 0 0 14px; }
form label { display: block; font-size: 12px; color: var(--c-text-muted); margin-bottom: 4px; }
form input[type="text"], form input[type="date"], form input[type="password"], form input[type="email"],
form select, form textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--c-border);
  border-radius: 6px; font-size: 13px; font-family: var(--font); background: var(--c-bg); }
form input:focus, form select:focus, form textarea:focus {
  outline: none; border-color: var(--c-accent); box-shadow: 0 0 0 3px var(--c-accent-soft); }

.search-bar { display: flex; gap: 8px; margin-bottom: 16px; }
.search-bar input { flex: 1; padding: 8px 12px; border: 1px solid var(--c-border); border-radius: var(--radius); }

.empty { padding: 40px; text-align: center; color: var(--c-text-muted); }

.pagination { margin-top: 16px; display: flex; gap: 8px; justify-content: center; }
.pagination a, .pagination span { padding: 6px 10px; border-radius: 6px; text-decoration: none;
  color: var(--c-text); border: 1px solid var(--c-border); }
.pagination .current { background: var(--c-accent); color: #fff; border-color: var(--c-accent); }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh;
  background: var(--c-surface); }
.login-card { width: 360px; padding: 32px; background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: 12px; box-shadow: 0 4px 24px rgba(11,18,32,0.06); }
.login-card h1 { text-align: center; }
.login-card .logo { display: flex; justify-content: center; margin-bottom: 12px; }
.login-card .logo img { width: 40px; height: 40px; }
.login-card button { width: 100%; margin-top: 8px; }