* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: #f4f5f7;
    color: #1f2430;
    font-size: 14px;
}
a { color: #2563eb; text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell { display: flex; min-height: 100vh; }

.sidebar {
    width: 220px;
    background: #111827;
    color: #d1d5db;
    flex-shrink: 0;
    padding: 16px 0;
}
.sidebar .brand {
    font-weight: 700;
    font-size: 18px;
    color: #fff;
    padding: 0 16px 16px;
}
.sidebar nav a, .sidebar nav .nav-top {
    display: block;
    padding: 8px 16px;
    color: #d1d5db;
}
.sidebar nav a:hover { background: #1f2937; text-decoration: none; }
.sidebar .nav-top { border-bottom: 1px solid #1f2937; margin-bottom: 8px; font-weight: 600; color: #fff; }
.nav-group-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: #6b7280;
    padding: 12px 16px 4px;
}
.nav-disabled {
    display: block;
    padding: 8px 16px;
    color: #4b5563;
    cursor: not-allowed;
}

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.topbar h1 { font-size: 18px; margin: 0; }
.user-menu { display: flex; gap: 12px; align-items: center; }

.content { padding: 24px; }

.card { background: #fff; border: 1px solid #e5e7eb; border-radius: 8px; padding: 20px; margin-bottom: 20px; }

table.data-table { width: 100%; border-collapse: collapse; background: #fff; }
table.data-table th, table.data-table td {
    text-align: left; padding: 8px 10px; border-bottom: 1px solid #eee; font-size: 13px;
}
table.data-table th { background: #f9fafb; font-weight: 600; }
table.data-table tr:hover td { background: #f9fafb; }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; gap: 12px; }
.toolbar input[type=text] { padding: 6px 10px; border: 1px solid #d1d5db; border-radius: 6px; width: 260px; }

.btn {
    display: inline-block; padding: 7px 14px; border-radius: 6px; border: 1px solid #2563eb;
    background: #2563eb; color: #fff; cursor: pointer; font-size: 13px;
}
.btn:hover { background: #1d4ed8; text-decoration: none; }
.btn-secondary { background: #fff; color: #374151; border-color: #d1d5db; }
.btn-secondary:hover { background: #f3f4f6; }
.btn-danger { background: #fff; color: #dc2626; border-color: #dc2626; }
.btn-danger:hover { background: #fef2f2; }

form.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 20px; max-width: 760px; }
form.form-grid .full { grid-column: 1 / -1; }
form.form-grid label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 13px; }
form.form-grid input[type=text], form.form-grid input[type=email], form.form-grid input[type=number],
form.form-grid input[type=date], form.form-grid select, form.form-grid textarea {
    width: 100%; padding: 7px 9px; border: 1px solid #d1d5db; border-radius: 6px; font-size: 13px;
}
form.form-grid textarea { min-height: 70px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }
.form-actions { grid-column: 1 / -1; display: flex; gap: 10px; margin-top: 10px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; background: #e5e7eb; }
.flash-error { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }
.flash-ok { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }

.login-wrap {
    min-height: 100vh; display: flex; align-items: center; justify-content: center; background: #111827;
}
.login-box { background: #fff; padding: 32px; border-radius: 10px; width: 320px; }
.login-box h1 { font-size: 20px; margin: 0 0 20px; }
.login-box label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 13px; }
.login-box input { width: 100%; padding: 9px 10px; border: 1px solid #d1d5db; border-radius: 6px; margin-bottom: 14px; }
.login-box .btn { width: 100%; text-align: center; }