:root {
    --primary-color: #3b82f6;
    --sidebar-bg: #1e3a8a;
    --sidebar-hover: #2563eb;
    --navbar-bg: #1e40af;
    --bg: #f3f4f6;
    --text: #111827;
    --muted: #6b7280;
    --border: #e5e7eb;
    --danger: #dc2626;
    --success: #16a34a;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background: var(--bg); color: var(--text); }

.app { display: grid; grid-template-columns: 240px 1fr; grid-template-rows: 56px 1fr; min-height: 100vh; }
.navbar { grid-column: 1 / 3; background: var(--navbar-bg); color: #fff; display: flex; align-items: center; padding: 0 16px; gap: 12px; }
.navbar .brand { font-weight: 700; display: flex; align-items: center; gap: 8px; }
.navbar img.logo { height: 32px; }
.navbar .spacer { flex: 1; }
.navbar a { color: #fff; text-decoration: none; opacity: 0.9; }
.navbar a:hover { opacity: 1; }

.sidebar { background: var(--sidebar-bg); color: #cbd5e1; padding: 12px 0; }
.sidebar a { display: block; padding: 10px 16px; color: #cbd5e1; text-decoration: none; }
.sidebar a:hover, .sidebar a.active { background: var(--sidebar-hover); color: #fff; }

.content { padding: 24px; }
.content h1 { margin-top: 0; }

.card { background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 16px; margin-bottom: 16px; }
.table { width: 100%; border-collapse: collapse; background: #fff; }
.table th, .table td { padding: 8px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.table th { background: #f9fafb; font-weight: 600; }

.btn { display: inline-block; padding: 6px 12px; border-radius: 6px; border: 1px solid transparent; background: var(--primary-color); color: #fff; cursor: pointer; text-decoration: none; font-size: 14px; }
.btn:hover { filter: brightness(0.95); }
.btn.secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 4px 8px; font-size: 12px; }

label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; margin-top: 10px; }
input[type=text], input[type=number], textarea, select {
    width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; font-family: inherit;
}
textarea { min-height: 160px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.row { display: flex; gap: 12px; }
.row > * { flex: 1; }

.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; background: #eef2ff; color: #3730a3; font-size: 12px; }
.muted { color: var(--muted); font-size: 13px; }

.login { display: flex; min-height: 100vh; align-items: center; justify-content: center; }
.login .box { background: #fff; padding: 32px; border-radius: 12px; box-shadow: 0 6px 20px rgba(0,0,0,.06); text-align: center; min-width: 360px; }
.login img { height: 64px; margin-bottom: 16px; }