* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f6f7f9;
    color: #1a1a1a;
}
.topnav {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 14px 24px;
    background: #1f2937;
    color: #fff;
}
.topnav a { color: #d1d5db; text-decoration: none; }
.topnav a.brand { color: #fff; font-weight: 600; }
.topnav a:hover { color: #fff; }
.topnav .spacer { flex: 1; }
.topnav .whoami { color: #9ca3af; font-size: 0.9em; }

.container { max-width: 960px; margin: 32px auto; padding: 0 20px; }

.login-box {
    max-width: 360px;
    margin: 80px auto;
    text-align: center;
    background: #fff;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.cards { display: flex; gap: 16px; margin-top: 20px; }
.card {
    flex: 1;
    background: #fff;
    border-radius: 10px;
    padding: 20px;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.card-value { font-size: 2em; font-weight: 700; }
.card-label { color: #6b7280; margin-top: 4px; }

.table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 10px; overflow: hidden; }
.table th, .table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid #e5e7eb; }
.table th { background: #f3f4f6; font-weight: 600; font-size: 0.9em; color: #374151; }
.muted { color: #9ca3af; }

.badge { padding: 2px 8px; border-radius: 999px; font-size: 0.8em; }
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-approved { background: #d1fae5; color: #065f46; }
.badge-rejected, .badge-blocked { background: #fee2e2; color: #991b1b; }

.actions { display: flex; gap: 6px; }
.inline-form { display: inline; }
.btn {
    border: none; border-radius: 6px; padding: 6px 12px; cursor: pointer; font-size: 0.85em;
    background: #e5e7eb; color: #111827;
}
.btn-approve { background: #10b981; color: #fff; }
.btn-reject, .btn-block { background: #ef4444; color: #fff; }

.add-city-form { margin-bottom: 16px; display: flex; gap: 8px; }
.add-city-form input { padding: 6px 10px; border: 1px solid #d1d5db; border-radius: 6px; flex: 1; max-width: 320px; }

.lesson-form { display: flex; flex-direction: column; gap: 12px; max-width: 560px; margin-bottom: 20px; }
.lesson-form label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9em; color: #374151; }
.lesson-form input, .lesson-form textarea {
    padding: 8px 10px; border: 1px solid #d1d5db; border-radius: 6px; font: inherit;
}
.lesson-form .btn { align-self: flex-start; }

.file-list { list-style: none; padding: 0; }
.file-list li { display: flex; align-items: center; gap: 10px; padding: 6px 0; border-bottom: 1px solid #e5e7eb; }

.error { color: #b91c1c; }
.hint { color: #6b7280; font-size: 0.9em; }