:root {
    --ink: #132238;
    --muted: #6c7a90;
    --line: #e5eaf1;
    --surface: #ffffff;
    --canvas: #f4f7fb;
    --primary: #2864d7;
    --primary-dark: #1748a5;
    --success: #138a63;
    --danger: #bf3a4b;
    --shadow: 0 12px 36px rgba(20, 40, 80, .08);
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--canvas); color: var(--ink); font: 15px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
.shell { min-height: 100vh; display: flex; }
.sidebar { width: 250px; background: #101c32; color: #dbe7fb; padding: 24px 18px; display: flex; flex-direction: column; }
.brand { display: flex; align-items: center; gap: 11px; padding: 0 10px 28px; color: #fff; }
.brand strong { display: block; font-size: 17px; letter-spacing: .02em; }
.brand small { display: block; color: #91a7c8; font-size: 11px; margin-top: 2px; }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 12px; background: linear-gradient(135deg, #4d8cff, #7cd8ff); color: #071529; font-weight: 800; font-size: 21px; }
.nav { display: grid; gap: 5px; }
.nav a { border-radius: 10px; padding: 11px 12px; color: #b4c4df; }
.nav a:hover, .nav a:focus { color: #fff; background: rgba(255,255,255,.09); }
.sidebar-footer { margin-top: auto; display: grid; gap: 8px; padding: 14px 10px 0; border-top: 1px solid rgba(255,255,255,.12); }
.muted { color: var(--muted); }
.sidebar .muted { color: #9bb0d0; font-size: 13px; }
.role-pill { color: #d8e9ff; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.link-button { border: 0; background: none; padding: 0; color: #87b3ff; cursor: pointer; text-align: left; }
.main { flex: 1; padding: 34px clamp(20px, 4vw, 56px); min-width: 0; }
.main-auth { display: grid; place-items: center; }
.page-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 28px; }
h1 { margin: 0; font-size: clamp(25px, 3vw, 38px); letter-spacing: -.035em; }
h2 { margin: 0; font-size: 20px; }
.eyebrow { color: var(--primary); text-transform: uppercase; font-weight: 700; letter-spacing: .11em; font-size: 11px; margin: 0 0 8px; }
.subtitle { color: var(--muted); margin: 8px 0 0; }
.grid { display: grid; gap: 18px; }
.stats { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 22px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); padding: 22px; }
.stat-value { font-size: 28px; font-weight: 800; margin-top: 10px; }
.stat-label { color: var(--muted); font-size: 13px; }
.two-col { grid-template-columns: minmax(0, 1.3fr) minmax(300px, .7fr); align-items: start; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; border-bottom: 1px solid var(--line); padding: 12px 10px; white-space: nowrap; }
th { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
td { font-size: 14px; }
.badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 4px 9px; font-size: 12px; background: #eef3fb; color: #3b5680; }
.badge.success { background: #e5f7ef; color: var(--success); }
.badge.warning { background: #fff4df; color: #9a6a00; }
.badge.danger { background: #fdebed; color: var(--danger); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.field { display: grid; gap: 6px; }
.field.full { grid-column: 1 / -1; }
label { font-size: 13px; color: #495a74; font-weight: 650; }
input, select { width: 100%; border: 1px solid #d7e0ec; background: #fff; border-radius: 10px; padding: 11px 12px; color: var(--ink); outline: none; }
input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(40,100,215,.12); }
.btn { border: 0; border-radius: 10px; padding: 11px 15px; font-weight: 700; cursor: pointer; background: var(--primary); color: #fff; }
.btn:hover { background: var(--primary-dark); }
.btn.secondary { background: #eaf0f9; color: #284260; }
.actions { display: flex; gap: 9px; align-items: center; margin-top: 16px; }
.alert { border-radius: 12px; padding: 12px 15px; margin-bottom: 18px; border: 1px solid; }
.alert.success { background: #ebfaf3; color: #0d6b4b; border-color: #b9ead4; }
.alert.error { background: #fff0f2; color: #9c273b; border-color: #f2c0c8; }
.login-card { width: min(440px, 100%); }
.login-card .brand { color: var(--ink); padding: 0 0 28px; }
.login-card .brand small { color: var(--muted); }
.login-card .brand-mark { color: #fff; background: linear-gradient(135deg, #2864d7, #76c9ff); }
.empty { padding: 30px 10px; color: var(--muted); text-align: center; }
@media (max-width: 980px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } .two-col { grid-template-columns: 1fr; } }
@media (max-width: 680px) { .shell { display: block; } .sidebar { width: 100%; } .sidebar-footer { margin-top: 20px; } .main { padding: 24px 16px; } .page-header { display: block; } .page-header .btn { margin-top: 16px; } .form-grid { grid-template-columns: 1fr; } .field.full { grid-column: auto; } }