:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --muted: #5f6b7a;
  --text: #1f2937;
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --danger: #dc2626;
  --shadow: 0 10px 25px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; background: linear-gradient(180deg, #ffffff, var(--bg)); color: var(--text); }

.topbar { display: flex; align-items: center; gap: 16px; padding: 16px 24px; border-bottom: 1px solid rgba(0,0,0,0.06); background: #ffffff; backdrop-filter: blur(6px); position: sticky; top: 0; z-index: 10; }
.brand { font-weight: 700; letter-spacing: 0.3px; color: var(--text); }
.spacer { flex: 1; }
.env { color: var(--muted); font-size: 12px; }

.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }

.layout { display: grid; grid-template-columns: 240px 1fr; gap: 0; }
.sidebar { border-right: 1px solid rgba(0,0,0,0.06); background: #ffffff; padding: 16px; min-height: calc(100vh - 64px); position: sticky; top: 64px; }
.sidebar-title { font-size: 12px; color: var(--muted); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 1px; }
.menu { display: flex; flex-direction: column; gap: 8px; }
.menu-item { text-align: left; width: 100%; background: #ffffff; border: 1px solid rgba(0,0,0,0.08); color: var(--text); padding: 10px 12px; border-radius: 10px; cursor: pointer; transition: 150ms; }
.menu-item:hover { background: #f3f4f6; }
.menu-item.active { background: #eaf1ff; border-color: rgba(37,99,235,0.45); }
.content { padding-top: 24px; }

.cards-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 1100px) { .cards-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 720px) { .cards-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .cards-grid { grid-template-columns: 1fr; } }

.stat-card { background: #ffffff; border: 1px solid rgba(0,0,0,0.06); border-radius: 14px; padding: 18px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 8px; }
.stat-title { font-size: 14px; color: var(--muted); }
.stat-value { font-size: 36px; font-weight: 800; letter-spacing: 0.5px; color: #0f172a; }
.stat-sub { font-size: 12px; color: var(--muted); }

.panel { margin-top: 24px; background: var(--panel); border: 1px solid rgba(0,0,0,0.06); border-radius: 14px; box-shadow: var(--shadow); padding: 16px; }
.panel h2 { margin: 0 0 12px; font-size: 16px; }
.actions { display: flex; gap: 10px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } }
label input, label select { display: block; width: 100%; margin-top: 6px; }
.muted { color: var(--muted); font-size: 12px; align-self: center; }

.btn { appearance: none; border: 1px solid rgba(0,0,0,0.1); border-radius: 10px; padding: 10px 14px; background: #ffffff; color: var(--text); cursor: pointer; transition: 160ms ease; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.btn:hover { background: #f3f4f6; transform: translateY(-1px); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: white; }
.btn.primary:hover { background: var(--primary-600); }
.btn.full { width: 100%; }

.error { color: var(--danger); margin-top: 10px; min-height: 20px; }

/* Auth */
.auth-body { display: grid; place-items: center; }
.auth-container { width: min(440px, 92vw); display: flex; flex-direction: column; align-items: center; gap: 18px; }
.card { width: 100%; background: var(--panel); border: 1px solid rgba(0,0,0,0.06); border-radius: 16px; padding: 18px; box-shadow: var(--shadow); }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
label { font-size: 12px; color: var(--muted); }
input { border: 1px solid rgba(0,0,0,0.12); background: #ffffff; color: var(--text); padding: 10px 12px; border-radius: 10px; outline: none; }
input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }
.footer-note { color: var(--muted); font-size: 12px; }

/* Views */
.view { display: none; }
.view.visible { display: block; }

/* Tables */
.table-wrap { margin-top: 12px; background: #ffffff; border: 1px solid rgba(0,0,0,0.06); border-radius: 12px; overflow: auto; box-shadow: var(--shadow); }
.table { width: 100%; border-collapse: collapse; min-width: 720px; }
.table th, .table td { padding: 10px 12px; border-bottom: 1px solid rgba(0,0,0,0.06); font-size: 14px; color: var(--text); }
.table th { text-align: left; color: var(--muted); font-weight: 600; background: #f8fafc; position: sticky; top: 0; }
.table tr:hover td { background: #f9fafb; }