:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --text: #162033;
  --muted: #708096;
  --line: #dfe6ef;
  --brand: #153e67;
  --brand-2: #0f6b8d;
  --danger: #a33a3a;
  --ok: #287a54;
  --shadow: 0 10px 30px rgba(20, 43, 70, .08);
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", Arial, sans-serif; font-weight: 400; color: var(--text); background: var(--bg); }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.app-shell { min-height: 100vh; display: grid; grid-template-columns: 250px 1fr; }
.sidebar { background: #0f2740; color: #fff; padding: 24px 18px; display: flex; flex-direction: column; min-height: 100vh; position: sticky; top: 0; }
.brand { display: flex; gap: 12px; align-items: center; margin-bottom: 32px; }
.brand-mark { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: #fff; color: var(--brand); font-weight: 600; }
.brand strong, .brand small { display: block; }
.brand strong { font-weight: 500; letter-spacing: .2px; }
.brand small { color: #a9bdd1; margin-top: 3px; }
nav { display: grid; gap: 7px; }
nav button { border: 0; text-align: left; padding: 11px 13px; color: #c8d5e2; background: transparent; border-radius: 9px; font-weight: 400; }
nav button:hover, nav button.active { background: #173b5d; color: white; }
.sidebar-footer { margin-top: auto; color: #7f99b0; font-size: 12px; padding: 12px; }
main { min-width: 0; }
.topbar { display: flex; justify-content: space-between; gap: 20px; align-items: center; padding: 28px 34px 18px; }
h1 { margin: 0; font-size: 26px; font-weight: 500; }
.topbar p { margin: 6px 0 0; color: var(--muted); }
.content { padding: 0 34px 40px; }
.secondary, .primary { border-radius: 9px; padding: 9px 14px; border: 1px solid var(--line); }
.secondary { background: #fff; color: var(--text); }
.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.grid-stats { display: grid; grid-template-columns: repeat(5, minmax(140px, 1fr)); gap: 14px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px; box-shadow: var(--shadow); }
.stat .value { font-size: 30px; font-weight: 500; margin-bottom: 6px; }
.stat .label { color: var(--muted); font-size: 14px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px; box-shadow: var(--shadow); margin-bottom: 18px; }
.panel h2 { margin: 0 0 16px; font-size: 18px; font-weight: 500; }
.form-grid { display: grid; grid-template-columns: repeat(4, minmax(150px, 1fr)); gap: 12px; }
.field { display: grid; gap: 6px; }
.field.span-2 { grid-column: span 2; }
.field.span-4 { grid-column: span 4; }
label { font-size: 12px; color: var(--muted); }
input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 10px 11px; background: #fff; color: var(--text); outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--brand-2); box-shadow: 0 0 0 3px rgba(15,107,141,.10); }
textarea { min-height: 82px; resize: vertical; }
.form-actions { grid-column: 1 / -1; display: flex; justify-content: flex-end; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 11px 10px; border-bottom: 1px solid var(--line); text-align: left; font-size: 13px; vertical-align: top; }
th { color: var(--muted); font-weight: 500; background: #f9fbfd; }
.badge { display: inline-flex; padding: 4px 8px; border-radius: 99px; background: #edf3f8; font-size: 12px; }
.badge.ok { background: #e9f6ef; color: var(--ok); }
.badge.warn { background: #fff2e1; color: #9a5b00; }
.muted { color: var(--muted); }
.empty { padding: 28px; color: var(--muted); text-align: center; border: 1px dashed var(--line); border-radius: 10px; }
.two-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.toast { position: fixed; right: 24px; bottom: 24px; background: #102840; color: white; padding: 12px 16px; border-radius: 9px; box-shadow: var(--shadow); opacity: 0; transform: translateY(12px); pointer-events: none; transition: .2s; }
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error { background: var(--danger); }
@media (max-width: 1000px) {
  .grid-stats { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: repeat(2, 1fr); }
  .field.span-4 { grid-column: span 2; }
  .two-cols { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; min-height: auto; padding: 16px; }
  .brand { margin-bottom: 14px; }
  nav { grid-template-columns: repeat(2, 1fr); }
  .sidebar-footer { display: none; }
  .topbar { padding: 20px 18px 14px; }
  .content { padding: 0 18px 28px; }
  .form-grid { grid-template-columns: 1fr; }
  .field.span-2, .field.span-4 { grid-column: span 1; }
  .grid-stats { grid-template-columns: 1fr 1fr; }
}