/* Lightweight datetime picker overlay for mobile */
.dtp-mask { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: none; z-index: 4000; }
.dtp-panel { position: fixed; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 92%; max-width: 420px; background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 10px 24px rgba(0,0,0,.18); z-index: 4001; display: none; }
.dtp-head { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; border-bottom: 1px solid #eee; font-weight: 600; }
.dtp-head .dtp-title { font-size: 15px; }
.dtp-head .dtp-actions button { border: 0; background: #111; color: #fff; padding: 6px 12px; border-radius: 16px; font-size: 14px; }
.dtp-body { padding: 12px; }
.dtp-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.dtp-grid select { width: 100%; height: 42px; border: 1px solid #e5e7eb; border-radius: 8px; padding: 0 8px; font-size: 16px; background: #fff; }
.dtp-footer { padding: 10px 12px; text-align: right; border-top: 1px solid #eee; }
.dtp-footer button { border: 0; padding: 8px 14px; border-radius: 8px; }
.dtp-btn-cancel { background: #f3f4f6; color: #111; margin-right: 8px; }
.dtp-btn-ok { background: #111; color: #fff; }

@media (min-width: 641px) { .dtp-panel { max-width: 520px; } }